Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

Emerging growth company

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 001-37783

Clearside Biomedical, Inc.

(Exact Name of Registrant as Specified in its Charter)


Delaware	45-2437375
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
900 North Point Parkway, Suite 200 Alpharetta, GA	30005
(Address of principal executive offices)	(Zip Code)

(678) 270-3631

Registrant’s telephone number, including area code

N/A

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	CLSD	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of August 9, 2024, the registrant had 74,745,572 shares of common stock, $0.001 par value per share, outstanding.


		Page
	PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023	3
	Consolidated Statements of Operations and Comprehensive Loss for the three and six months ended June 30, 2024 and 2023	4
	Consolidated Statements of Stockholders’ (Deficit) Equity for the three and six months ended June 30, 2024 and 2023	5
	Consolidated Statements of Cash Flows for the six months ended June 30, 2024 and 2023	6
	Notes to the Consolidated Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 4.	Controls and Procedures	27
	PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	28
Item 1A	Risk Factors	28
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	28
Item 5.	Other Information	28
Item 6.	Exhibits	29
Signatures		30

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

CLEARSIDE BIOMEDICAL, INC.

Consolidated Balance Sheets

(in thousands, except share and per share data)

(unaudited)


	June 30, 2024			December 31, 2023
Assets
Current assets:
Cash and cash equivalents	$	18,238		$	28,920
Short-term investments		11,122			—
Accounts receivable		—			170
Prepaid expenses		364			722
Other current assets		44			311
Total current assets		29,768			30,123
Property and equipment, net		3,400			2,996
Operating lease right-of-use asset		736			869
Other assets		30			30
Total assets	$	33,934		$	34,018
Liabilities and stockholders’ (deficit) equity
Current liabilities:
Accounts payable (includes $40 and $331 to a related party as of June 30, 2024 and December 31, 2023, respectively)	$	1,576		$	2,205
Accrued liabilities (includes $416 and $215 to a related party as of June 30, 2024 and December 31, 2023, respectively)		3,703			4,169
Current portion of operating lease liabilities		370			364
Deferred revenue		225			75
Total current liabilities		5,874			6,813
Liability related to the sales of future royalties, net		46,731			41,988
Warrant liabilities		9,121			—
Operating lease liabilities		493			649
Other non-current liabilities		—			480
Total liabilities		62,219			49,930
Commitments and contingencies
Stockholders’ (deficit) equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized and no shares issued at June 30, 2024 and December 31, 2023		—			—
Common stock, $0.001 par value; 200,000,000 shares authorized at June 30, 2024 and December 31, 2023; 74,731,139 and 62,850,841 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively		74			63
Additional paid-in capital		311,922			304,948
Accumulated deficit		(340,280	)		(320,923	)
Accumulated other comprehensive loss		(1	)		—
Total stockholders’ deficit		(28,285	)		(15,912	)
Total liabilities and stockholders’ (deficit) equity	$	33,934		$	34,018

See accompanying notes to the consolidated financial statements.

CLEARSIDE BIOMEDICAL, INC.

Consolidated Statements of Operations and Comprehensive Loss

(in thousands, except share and per share data)

(unaudited)


	Three Months Ended June 30,						Six Months Ended June 30,
	2024			2023			2024			2023
License and other revenue (includes $81 and $156 from a related party for the three and six months ended June 30, 2024, respectively)	$	90		$	1,018		$	320		$	1,022
Operating expenses:
Cost of goods sold		—		213				—		213
Research and development (includes $243 and $503 to a related party for the three and six months ended June 30, 2024, respectively)		4,603			4,948			10,218			9,399
General and administrative		3,077			3,127			5,901			6,285
Total operating expenses		7,680			8,288			16,119			15,897
Loss from operations		(7,590	)		(7,270	)		(15,799	)		(14,875	)
Interest income		419			458			767			950
Other income, net		1,917			—			418			—
Non-cash interest expense on liability related to the sales of future royalties		(2,340	)		(2,294	)		(4,743	)		(4,461	)
Net loss	$	(7,594	)	$	(9,106	)	$	(19,357	)	$	(18,386	)
Net loss per share of common stock — basic and diluted	$	(0.10	)	$	(0.15	)	$	(0.27	)	$	(0.30	)
Weighted average shares outstanding — basic and diluted		74,731,139			61,654,520			72,292,183			61,413,343

Net loss	$	(7,594	)	$	(9,106	)	$	(19,357	)	$	(18,386	)
Unrealized loss on available-for-sale investments		(1	)		—			(1	)		—
Comprehensive loss	$	(7,595	)	$	(9,106	)	$	(19,358	)	$	(18,386	)

See accompanying notes to the consolidated financial statements.

CLEARSIDE BIOMEDICAL, INC.

Consolidated Statements of Stockholders’ (Deficit) Equity

(in thousands, except share data)

(unaudited)


	Three and Six Months Ended June 30, 2024
										Accumulated
										Other			Total
	Common Stock				Additional		Accumulated			Comprehensive			Stockholders'
	Shares		Amount		Paid-In-Capital		Deficit			Loss			(Deficit) Equity
Balance at December 31, 2023		62,850,841	$	63	$	304,948	$	(320,923	)	$	—		$	(15,912	)
Issuance of common stock under registered direct offering		11,111,111		11		4,309		—			—			4,320
Issuance of common stock under at-the-market sales agreement		339,912		—		450		—			—			450
Exercise of stock options		10,000		—		12		—			—			12
Vesting and settlement of restricted stock units		397,594		—		—		—			—			—
Issuance of common stock under employee stock purchase plan		21,681		—		21		—			—			21
Share-based compensation expense		—		—		1,062		—			—			1,062
Net loss		—		—		—		(11,763	)		—			(11,763	)
Balance at March 31, 2024		74,731,139		74		310,802		(332,686	)		—			(21,810	)
Share-based compensation expense		—		—		1,120		—			—			1,120
Net loss		—		—		—		(7,594	)		—			(7,594	)
Other comprehensive loss		—		—		—		—			(1	)		(1	)
Balance at June 30, 2024		74,731,139	$	74	$	311,922	$	(340,280	)	$	(1	)	$	(28,285	)


	Three and Six Months Ended June 30, 2023
										Total
	Common Stock				Additional		Accumulated			Stockholders'
	Shares		Amount		Paid-In-Capital		Deficit			(Deficit) Equity
Balance at December 31, 2022		60,639,827	$	61	$	298,984	$	(288,438	)	$	10,607
Issuance of common stock under at-the-market sales agreement		214,128		—		295		—			295
Vesting and settlement of restricted stock units		471,390		—		—		—			—
Issuance of common stock under employee stock purchase plan		38,954		—		37		—			37
Share-based compensation expense		—		—		1,041		—			1,041
Net loss		—		—		—		(9,280	)		(9,280	)
Balance at March 31, 2023		61,364,299		61		300,357		(297,718	)		2,700
Issuance of common stock under at-the-market sales agreement		328,147		1		361		—			362
Exercise of stock options		24,999		—		10		—			10
Share-based compensation expense		—		—		1,061		—			1,061
Net loss		—		—		—		(9,106	)		(9,106	)
Balance at June 30, 2023		61,717,445	$	62	$	301,789	$	(306,824	)	$	(4,973	)

See accompanying notes to the consolidated financial statements.

CLEARSIDE BIOMEDICAL, INC.

Consolidated Statements of Cash Flows

(in thousands)

(unaudited)


	Six Months Ended June 30,
	2024			2023
Operating activities
Net loss	$	(19,357	)	$	(18,386	)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense on liability related to the sales of future royalties, net of issuance costs accretion		4,743			4,461
Depreciation		72			31
Share-based compensation expense		2,182			2,102
Change in fair value of warrant liabilities		(1,206	)		—
Issuance costs allocated to warrant liabilities		787			—
Amortization and accretion of available-for-sale investments, net		(109	)		—
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		795			(119	)
Other assets and liabilities		(497	)		(9	)
Accounts payable and accrued liabilities (includes $254 to a related party for the six months ended June 30, 2024)		(1,091	)		(785	)
Deferred revenue		150			150
Net cash used in operating activities		(13,531	)		(12,555	)
Investing activities
Acquisition of property and equipment		(480	)		(1,212	)
Purchase of short-term investments		(11,014	)		—
Net cash used in investing activities		(11,494	)		(1,212	)
Financing activities
Proceeds from issuance of common stock and warrants under registered direct offering, net of issuance costs		13,860			—
Proceeds from at-the-market sales agreement, net of issuance costs		450			657
Payments to royalty purchase and sale agreement		—			(350	)
Proceeds from exercise of stock options		12			10
Proceeds from shares issued under employee stock purchase plan		21			37
Net cash provided by financing activities		14,343			354
Net decrease in cash and cash equivalents		(10,682	)		(13,413	)
Cash and cash equivalents, beginning of period		28,920			48,418
Cash and cash equivalent, end of period	$	18,238		$	35,005
Supplemental disclosure
Purchase of property and equipment included in accrued liabilities	$	4		$	116

See accompanying notes to the consolidated financial statements.

CLEARSIDE BIOMEDICAL, INC.

Notes to the Consolidated Financial Statements

(unaudited)

1. The Company

Clearside Biomedical, Inc. (the “Company”) is a biopharmaceutical company focused on revolutionizing the delivery of therapies to the back of the eye through the suprachoroidal space (SCS®). Incorporated in the State of Delaware on May 26, 2011, the Company has its corporate headquarters in Alpharetta, Georgia.

The Company’s activities since inception have primarily consisted of developing product and technology rights, raising capital and performing research and development activities. The Company is subject to a number of risks and uncertainties similar to those of other life science companies at a similar stage of development, including, among others, the need to obtain adequate additional financing, successful development efforts including regulatory approval of products, compliance with government regulations, successful commercialization of potential products, protection of proprietary technology and dependence on key individuals.

Liquidity

The Company had cash, cash equivalents and short-term investments of $29.4 million as of June 30, 2024.

Historically, the Company has funded its operations primarily through the sale of common stock and convertible preferred stock, the issuance of warrants, the issuance of long-term debt, and license agreements.

On February 6, 2024, the Company entered into a securities purchase agreement with institutional investors and an existing stockholder, pursuant to which the Company issued and sold, in a registered direct offering (the “Registered Direct Offering”): (i) an aggregate of 11,111,111 shares of its common stock; and (ii) warrants to purchase up to 11,111,111 shares of common stock (the “Warrants”). The combined purchase price of each share and accompanying Warrant was $1.35. The exercise price for the Warrants is $1.62 per share. The Warrants will be exercisable from August 9, 2024 and will expire on August 9, 2029. The net proceeds to the Company from the Registered Direct Offering were $13.9 million.

On January 31, 2024 (the “Amendment Effective Date”), the Company entered into a fourth amendment to the license agreement (as amended, the “Emory License Agreement”) with Emory University and Georgia Tech Research Corporation (collectively, the “Licensor”) pursuant to which the parties agreed to reduce the Sublicense Percentage (as defined in the Emory License Agreement) from a low double digit percentage to a high single digit percentage that the Company will pay the Licensor applicable to any fees or payments paid to the Company by any Sublicensee (as defined in the Emory License Agreement) of the Licensed Patents and/or Licensed Technology (each as defined in the Emory License Agreement), excluding (i) amounts paid to the Company by a Sublicensee to reimburse the Company for certain research and development costs pursuant to a written agreement between the Company and such Sublicensee, (ii) the value of intellectual property transferred or granted to the Company if necessary or helpful to the development or commercialization of Licensed Products (as defined in the Emory License Agreement) and (iii) amounts paid for shares of the Company’s stock. The payment to Licensor of any such Sublicense Percentage is due within 30 days of receipt by the Company of a qualifying payment from a Sublicensee, provided however, with respect to any qualifying payments received by the Company from a Sublicensee prior to January 1, 2025, the payment to Licensor of any such Sublicensee Percentage is due to Licensor by March 31, 2025. The parties also agreed to a revised annual license maintenance fee due each year (the “Maintenance Fee”) starting in 2023 through 2028, as follows: $250,000 for 2023 through 2025, $350,000 for 2026, $400,000 for 2027 and $500,000 for 2028. The Company paid the Maintenance Fee for 2023 in February 2024. The remaining annual Maintenance Fee payments are due on October 1st of each year.

On December 22, 2023, Clearside Biomedical, Inc., through its wholly owned subsidiary Clearside Royalty LLC ("Royalty Sub"), entered into a letter agreement (the “Letter Agreement”) with HCR (as defined below) and HCR Clearside SPV, LLC (as assignee of HCR Collateral Management, LLC) (“Agent”) amending that certain Purchase and Sale Agreement, dated as of August 8, 2022, by and among Royalty Sub, HCR and Agent ("Purchase and Sale Agreement"). Pursuant to the terms of the Letter Agreement, Royalty Sub and Agent mutually agreed that Royalty Sub waived any and all rights to the $12.5 million milestone payment which was deposited in an escrow account (“First Milestone Payment") in connection with the closing of the transactions contemplated by the Purchase and Sale Agreement and agreed to the release of the First Milestone Payment to Agent.

On November 1, 2023, the Company, entered into a license agreement (the “BioCryst License Agreement”) with BioCryst Pharmaceuticals, Inc. (“BioCryst”) pursuant to which the Company granted BioCryst an exclusive, worldwide and sublicensable license to the Company’s SCS Microinjector for the delivery of BioCryst’s proprietary plasma kallikrein inhibitor known as avoralstat for the treatment and prevention of diabetic macular edema (“DME”). The Company received an upfront license fee payment of $5.0 million in connection with signing of the BioCryst License Agreement. In addition, the Company is eligible to receive up to an additional $30.0 million in clinical and regulatory milestone payments, and up to a total of $47.5 million in a series of post-approval sales-based milestone payments based on the achievement of annual global net product sales milestones up to $2.0 billion. Further, during the royalty term, BioCryst has also agreed to pay the Company tiered mid-single digit royalties on annual global net product

sales, with the highest royalty rate applied to sales over $1.5 billion, subject to reductions in specified circumstances. The Company’s rights to these royalties and milestone payments have been sold pursuant to the terms and conditions of the Purchase and Sale Agreement as described in Note 5.

In May 2023, the Company terminated its at-the-market sales agreement with Cowen and Company, LLC (the "ATM Agreement"). The Company sold 515,959 shares of its common stock for net proceeds of $0.7 million under its ATM Agreement with Cowen and Company, LLC during the six months ended June 30, 2023, prior to the termination of the ATM Agreement.

In May 2023, the Company entered into a Controlled Equity OfferingSM Sales Agreement (the "Sales Agreement") with Cantor Fitzgerald & Co. ("Cantor") under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, having an aggregate offering price of up to $50.0 million through Cantor as its sales agent. During the six months ended June 30, 2024, the Company sold 339,912 shares of its common stock for net proceeds of $0.5 million under the Sales Agreement. During the six months ended June 30, 2023, the Company sold 26,316 shares of its common stock for net proceeds of $32,000 pursuant to the Sales Agreement.

The Company has suffered recurring losses and negative cash flows from operations since inception and anticipates incurring additional losses until such time, if ever, that it can generate significant revenue. The Company has no current source of revenue to sustain present activities. The Company does not expect to generate other meaningful revenue until and unless the Company's licensees successfully commercialize XIPERE and the Company has fulfilled its obligations under the Purchase and Sale Agreement, its other licensees receive regulatory approval and successfully commercialize its product candidates, or the Company commercializes its product candidates either on its own or with a third party. In the absence of product or other revenues, the amount, timing, nature or source of which cannot be predicted, the Company’s losses will continue as it conducts its research and development activities.

The Company will continue to need to obtain additional financing to fund future operations, including completing the development, partnering and potential commercialization of its primary product candidates. The Company will need to obtain financing to complete the development and conduct clinical trials for the regulatory approval of its product candidates if requested by regulatory bodies. If such product candidates were to receive regulatory approval, the Company would need to obtain financing to prepare for the potential commercialization of its product candidates, if the Company decides to commercialize the products on its own.

These conditions raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date the financial statements are issued. Based on its current plans and forecasted expenses, the Company expects that its cash, cash equivalents and short-term investments as of the filing date, August 12, 2024 will enable the Company to fund its planned operating expenses and capital expenditure requirements into the third quarter of 2025. The Company has based this estimate on assumptions that may prove to be wrong, and it could exhaust its capital resources sooner than expected. Until the Company can generate sufficient revenue, the Company will need to finance future cash needs through public or private equity offerings, license agreements, debt financings or restructurings, collaborations, strategic alliances and marketing or distribution arrangements.

The Company’s financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. The financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result should the Company be unable to continue as a going concern.

2. Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The Company's consolidated financial statements include the results of the financial operations of Clearside Biomedical, Inc. and its wholly-owned subsidiary, Clearside Royalty, LLC. a Delaware limited liability company, which was formed for the purposes of the transactions contemplated by the Purchase and Sale Agreement described in Note 5. All intercompany balances and transactions have been eliminated.

The Company’s consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). In the opinion of management, the Company has made all necessary adjustments, which include normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial position and results of operations for the interim periods presented. The results for the three and six months ended June 30, 2024 are not indicative of results to be expected for the full year ending December 31, 2024, any other interim periods or any future year or period. These unaudited financial statements should be read in conjunction with the audited consolidated financial statements and related footnotes, which are included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 12, 2024.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of income and expenses during the reporting periods. Significant items

subject to such estimates and assumptions include the estimate of the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, the fair value of common stock warrants, revenue recognition, the accounting for useful lives to calculate depreciation and amortization, clinical trial expense accruals, share-based compensation expense and income tax valuation allowance. Actual results could differ from these estimates.

Revenue Recognition

The Company recognizes revenue from its contracts with customers under Financial Accounting Standards Board Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers. The Company’s primary revenue arrangements are license agreements, which typically include upfront payments, regulatory and commercial milestone payments and royalties based on future product sales. The arrangements may also include payments for the Company’s SCS Microinjector devices as well as payments for assistance and oversight of the customer’s use of the Company’s technology. In determining the amount of revenue to be recognized under these agreements, the Company performs the following steps: (i) identifies the promised goods and services to be transferred in the contract, (ii) identifies the performance obligations, (iii) determines the transaction price, (iv) allocates the transaction price to the performance obligations and (v) recognizes revenue as the performance obligations are satisfied.

The Company receives payments from its customers based on billing schedules established in each contract. Upfront and other payments may require deferral of revenue recognition to a future period until the Company performs its obligations under the arrangement. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional. The Company does not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the customer and the transfer of the promised goods or services to the customer will be one year or less.

Research and Development Costs

Research and development costs are charged to expense as incurred and include:

•

employee-related expenses, including salaries, benefits, travel and share-based compensation expense for research and development personnel;

•

expenses incurred under agreements with contract research organizations, contract manufacturing organizations and consultants that conduct preclinical studies and clinical trials;

•

costs associated with preclinical and clinical development activities;

•

costs associated with submitting regulatory approval applications for the Company’s product candidates;

•

costs associated with training physicians on the suprachoroidal injection procedure and educating and providing them with appropriate product candidate information;

•

costs associated with technology and intellectual property licenses;

•

costs for the Company’s research and development facility; and

•

depreciation expense for assets used in research and development activities.

Costs for certain development activities, such as clinical trial activities, are recognized based on an evaluation of the estimated total costs for the clinical trial, progress to completion of specific tasks using data such as patient enrollment, pass-through expenses, clinical site activations, data from the clinical sites or information provided to the Company by its vendors on their actual costs incurred. Payments for these activities are based on the terms of the individual contracts and any subsequent amendments, which may differ from the patterns of costs incurred, and are reflected in the consolidated financial statements as prepaid expenses or accrued liabilities.

Share-Based Compensation

Compensation cost related to share-based awards granted to employees, directors and consultants is measured based on the estimated fair value of the award at the grant date. The Company estimates the fair value of stock options using a Black-Scholes option pricing model. The fair value of restricted stock units granted is measured based on the market value of the Company’s common stock on the date of grant. Share-based compensation costs are expensed on a straight-line basis over the relevant vesting period.

Compensation cost related to shares purchased through the Company’s employee stock purchase plan, which is considered compensatory, is based on the estimated fair value of the shares on the offering date, including consideration of the discount and the look-back period. The Company estimates the fair value of the shares using a Black-Scholes option pricing model. Compensation expense is recognized over the six-month withholding period prior to the purchase date.

All share-based compensation costs are recorded in general and administrative or research and development costs in the consolidated statements of operations and comprehensive loss based upon the recipient's underlying role within the Company.

Cash Equivalents

Cash equivalents consist of short-term, highly liquid investments with an original term of three months or less at the date of purchase.

Short-term Investments

Short-term investments are investments with original maturities of between 90 and 365 days when purchased and are comprised of treasury bills. The Company classifies its short-term investments as available-for-sale securities. Short-term investments are recorded at fair value and unrealized gains and losses are recorded within accumulated other comprehensive income (loss). Accretion on the discount associated with these investments is recorded in interest income. In addition, the Company evaluates the short-term investments with unrealized losses to determine whether such losses are other than temporary.

Concentration of Credit Risk Arising From Cash Deposits in Excess of Insured Limits

The Company maintains its cash in bank deposits that at times may exceed federally insured limits. The Company has not experienced any loss in such accounts. The Company believes it is not exposed to any significant risks with respect to its cash balances.

Liability Related to the Sales of Future Royalties and Non-Cash Interest Expense

In connection with the Purchase and Sale Agreement, the Company recognizes a liability related to the sales of future royalties under ASC 470-10, Debt and ASC 835-30, Interest - Imputation of Interest. The initial funds received by the Company pursuant to the terms of the Purchase and Sale Agreement were recorded as a liability and are accreted under the effective interest method up to the estimated amount of future royalties and milestone payments to be made under the Purchase and Sale Agreement. The issuance costs were recorded as a direct deduction to the carrying amount of the liability and are amortized under the effective interest method over the estimated period the liability will be repaid. The Company estimates the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, and a significant increase or decrease in these estimates could materially impact the liability balance and the related interest expense. If the timing of the receipt of royalty payments or milestones is materially different from the original estimates, the Company will prospectively adjust the effective interest and the related amortization of the liability and related issuance costs.

Warrant Liabilities

The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in FASB ASC Topic 480, Distinguishing Liabilities from Equity (ASC 480) and ASC Topic 815, Derivatives and Hedging (ASC 815). The assessment considers whether the warrants (i) are freestanding financial instruments pursuant to ASC 480, (ii) meet the definition of a liability pursuant to ASC 480, and (iii) meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company's own stock and whether the warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding.

For warrants that meet all criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital, on the consolidated statement of stockholders’ deficit at the time of issuance. For warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance and on each consolidated balance sheet date thereafter.

The Company’s warrant liabilities are measured at fair value using a simulation model which takes into account, as of the valuation date, factors including the current exercise price, the expected life of the warrant, the current price of the Company's common stock, the expected volatility, holding cost, the risk-free interest rate for the term of the warrant and the likelihood of achieving certain future milestone events and the related impact to the price of the Company's common stock. The warrant liabilities are revalued at each reporting period and changes in fair value are recognized in other income (expense) in the consolidated statements of operations and comprehensive loss. The selection of the appropriate valuation model and the inputs and assumptions that are required to determine the valuation requires significant judgment and requires management to make estimates and assumptions that affect the reported amount of the related liability and reported amounts of the change in fair value. Actual results could differ from those estimates, and changes in these estimates are recorded when known.

Recently Issued Accounting Pronouncements Not Yet Adopted

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU looks to enhance the transparency and decision usefulness of income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The main provisions to the rate reconciliation disclosure require public entities to disclose, on an annual basis, specific categories in the rate reconciliation and provide additional information for reconciling items that

meet a quantitative threshold. The main provisions to the income taxes paid disclosure require that all entities disclose on an annual basis: the amount of income taxes paid disaggregated by federal, state and foreign taxes and the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid meets a quantitative threshold. This ASU also requires all entities to disclose income (loss) from continuing operations before income tax expense (benefit) disaggregated between domestic and foreign and income tax expense (benefit) from continuing operations disaggregated by federal, state and foreign.

This ASU is to be applied on a prospective basis with an effective date for all public entities for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this ASU.

3. Property and Equipment, Net

Property and equipment, net consisted of the following (dollar amounts in thousands):


	Estimated Useful Lives (Years)	June 30, 2024			December 31, 2023
Furniture and fixtures	5	$	249		$	249
Machinery and equipment	5		1,441			581
Computer equipment	3		20			20
Leasehold improvements	Lesser of useful life or remaining lease term		476			476
Work in process			2,206			2,590
Total property and equipment			4,392			3,916
Less: Accumulated depreciation			(992	)		(920	)
Property and equipment, net		$	3,400		$	2,996

4. Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	June 30,		December 31,
	2024		2023
Accrued research and development	$	2,270	$	2,078
Accrued employee costs		1,036		1,862
Accrued professional fees		34		38
Accrued expense		363		191
	$	3,703	$	4,169

5. Royalty Purchase and Sale Agreement

On August 8, 2022 (the “Closing Date”), the Company, through its wholly owned subsidiary Clearside Royalty LLC, a Delaware limited liability company ("Royalty Sub"), entered into the Purchase and Sale Agreement with entities managed by HealthCare Royalty Management, LLC ("HCR"), pursuant to which Royalty Sub sold to HCR certain of its rights to receive royalty and milestone payments payable to Royalty Sub under the Arctic Vision License Agreement, the Bausch License Agreement, that certain License Agreement, effective as of July 3, 2019, by and between the Company and Aura Biosciences, Inc. (the “Aura License Agreement”), that certain Option and License Agreement, dated as of August 29, 2019, by and between REGENXBIO Inc. and the Company (the “REGENXBIO License Agreement”), and any and all out-license agreements following the Closing Date for, or related to XIPERE or the SCS Microinjector technology (to be used in connection with compounds or products of any third parties) delivered, in whole or in part, by means of the SCS Microinjector technology) (collectively, "Post-Closing License Agreements"), excluding, for the avoidance of doubt, any in-licensed or internally developed therapies following the Closing Date (collectively, the “Royalties”), in exchange for up to $65 million. In connection with this transaction, the Company assigned the Arctic Vision License Agreement, Bausch License Agreement, Aura License Agreement, REGENXBIO License Agreement, the Company's license agreement with Emory University and The Georgia Tech Research Corporation and related intellectual property rights to Royalty Sub. On November 1, 2023, the Company entered into the BioCryst License Agreement. The Company’s rights to milestone payments and

royalties under the BioCryst License Agreement were sold to HCR pursuant to the terms of the Purchase and Sale Agreement providing for the sale of Royalties from Post-Closing License Agreements to HCR.

Under the terms of the Purchase and Sale Agreement, Royalty Sub received an initial payment of $32.1 million, representing the $32.5 million to which the Company was entitled, net of certain of HCR's transaction-related expenses which the Company agreed to reimburse. There were additional issuance costs of $1.5 million related to the Purchase and Sale Agreement resulting in net proceeds of $30.6 million. An additional $12.5 million was deposited by HCR in an escrow account which was released to HCR pursuant to the Letter Agreement described below. The terms of the Purchase and Sale Agreement also provide for an additional $20 million milestone payment to Royalty Sub upon attainment of a second pre-specified sales milestone related to 2024 XIPERE sales (the "Second Milestone Event").

The Purchase and Sale Agreement will automatically expire, and the payment of Royalties from the Royalty Sub to HCR will cease, when HCR has received payments of the Royalties equal to 2.5 times the aggregate amount of payments made by HCR under the Purchase and Sale Agreement if the Second Milestone Event is achieved on or prior to December 31, 2024 (the “Initial Cap”). If the Second Milestone Event is not achieved on or prior to December 31, 2024, payment of Royalties from Royalty Sub to HCR will cease when HCR has received Royalties payments equal to 3.4 times the aggregate amount of payments under the Purchase and Sale Agreement (the “Alternative Cap”, and together with the Initial Cap, the “Cap Amount”). In the event of a change in control, acquiror will have the option to make a payment to HCR of the Cap Amount then in effect, less the aggregate amount of Royalty payments made by Royalty Sub to HCR under the Purchase and Sale Agreement as a one-time payment at which time, payment of Royalties to HCR will cease. Alternatively, in the event of a change in control, the acquiror will have the option to make an initial payment of 1.0 times the aggregate amount of payments made by HCR under the Purchase and Sale Agreement as of the date of such change in control, then in that event, payment of Royalties from Royalty Sub to HCR will cease when HCR has received total Royalties payments (including the initial payment) equal to the Alternative Cap. After the Purchase and Sale Agreement expires, all rights to receive the Royalties return to Royalty Sub.

On December 22, 2023, the Company, through its wholly owned subsidiary Royalty Sub, entered into the Letter Agreement with the Agent amending the Purchase and Sale Agreement. Pursuant to the terms of the Letter Agreement, Royalty Sub and Agent mutually agreed that Royalty Sub waived any and all rights to the First Milestone Payment in connection with the closing of the transactions contemplated by the Purchase and Sale Agreement and agreed to the release of the First Milestone Payment to Agent.

Issuance costs pursuant to the Purchase and Sale Agreement consisting primarily of advisory and legal fees, totaled $1.9 million including the amount of HCR's transaction-related expenses that the Company reimbursed. The effective interest rate includes cash flow projections for future royalty and milestone payments, which are sensitive to certain assumptions, including market size, market penetration and sales price, that are forward looking and could be affected by future market conditions.

The following table summarizes the activity of the Purchase and Sale Agreement for the six months ended June 30, 2024 (in thousands):


Royalty Purchase and Sale Agreement balance at December 31, 2023	$	41,988
Non-cash interest expense		4,743
Balance at June 30, 2024	$	46,731

Effective interest rate		22.0	%

6. Common Stock

The Company’s amended and restated certificate of incorporation authorizes the Company to issue 200,000,000 shares of $0.001 par value common stock. As of June 30, 2024 and December 31, 2023, there were 74,731,139 and 62,850,841 shares of common stock outstanding, respectively.

7. Common Stock Warrants

In September 2016, in connection with a loan agreement, the Company issued warrants to purchase up to 29,796 shares of common stock at a price per share of $10.74. The warrants expire in September 2026, or earlier upon the occurrence of specified mergers or acquisitions of the Company, and are immediately exercisable. The warrants were recorded in equity at the time of issuance and as of June 30, 2024, had a weighted average remaining life of 2.25 years.

On February 6, 2024, the Company entered into a securities purchase agreement with institutional investors and an existing stockholder, pursuant to which the Company issued and sold, in a registered direct offering (i) an aggregate of 11,111,111 shares of its common stock; and (ii) Warrants to purchase up to 11,111,111 shares of common stock. The combined purchase price of each share and accompanying Warrant was $1.35. The exercise price for the Warrants is $1.62 per share. The Warrants will be exercisable beginning August 9, 2024 and will expire on August 9, 2029. The Company recorded the initial fair value of the Warrants of $10.3

million as warrant liabilities and $4.7 million attributable to common stock as additional paid in capital in the consolidated balance sheets. The issuance costs were allocated among the warrants and common stock consistent with the allocation between amounts recorded as warrant liabilities and common stock. The issuance costs allocated to the Warrants as well as the change in the fair value of the Warrants during the period are recorded in other income (expense) in the consolidated statements of operations. The issuance costs allocated to common stock were recorded as a reduction to additional paid in capital.

The following table summarizes the change in fair value of the warrant liabilities during the six months ended June 30, 2024 (in thousands):


Fair value of warrants at issuance February 9, 2024	$	10,327
Change in fair value during the period		(1,206	)
Fair value of warrants at June 30, 2024	$	9,121

The following table summarizes certain key inputs for the valuation of the Warrants at June 30, 2024:


Common stock price	$	1.30
Exercise price per share	$	1.62
Expected volatility		65.30	%
Risk-free interest rate		4.24	%
Contractual term (in years)		5.11
Expected dividend yield		—	%

8. Share-Based Compensation

Share-based compensation is accounted for in accordance with the provisions of ASC 718, Compensation-Stock Compensation.

Stock Options

The Company has granted stock option awards to employees, directors and consultants from its 2011 Stock Incentive Plan (the “2011 Plan”) and its 2016 Equity Incentive Plan (the “2016 Plan”). The estimated fair value of options granted is determined as of the date of grant using the Black-Scholes option pricing model. The resulting fair value is recognized ratably over the requisite service period, which is generally the vesting period of the awards.

Share-based compensation expense for options granted under the 2016 Plan is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	384	$	295	$	804	$	606
General and administrative		480		437		862		833
Total	$	864	$	732	$	1,666	$	1,439

The following table summarizes the activity related to stock options granted under the 2011 Plan and the 2016 Plan during the six months ended June 30, 2024:


				Weighted
	Number of			Average
	Shares			Exercise Price
Options outstanding at December 31, 2023		9,865,770		$	2.83
Granted		3,034,375			1.32
Exercised		(10,000	)		1.24
Forfeited		(122,815	)		2.83
Options outstanding at June 30, 2024		12,767,330			2.47

Options exercisable at December 31, 2023		5,494,746			3.83

Options exercisable at June 30, 2024		6,691,528			3.45

As of June 30, 2024, the Company had $5.7 million of unrecognized compensation expense related to unvested stock options, which is expected to be recognized over a weighted average period of 2.6 years.

Restricted Stock Units

The Company has granted restricted stock units (“RSUs”) to employees under the 2016 Plan. The shares underlying the RSU awards have vesting terms of four years from the date of grant subject to the employees’ continuous service and subject to accelerated vesting in specified circumstances. The fair value of the RSUs granted is measured based on the market value of the Company’s common stock on the date of grant and is recognized ratably over the requisite service period, which is generally the vesting period of the awards.

The total share-based compensation expense related to RSUs is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	118	$	163	$	237	$	332
General and administrative		135		163		273		324
Total	$	253	$	326	$	510	$	656

The following table summarizes the activity related to RSUs during the six months ended June 30, 2024:


				Weighted Average
	Number of			Grant Date
	Shares			Fair Value
Non-vested RSUs outstanding at December 31, 2023		834,899		$	3.01
Vested		(397,594	)		3.07
Non-vested RSUs outstanding at June 30, 2024		437,305			2.96

As of June 30, 2024, the Company had $0.8 million of unrecognized compensation expense related to the RSUs which is expected to be recognized over a weighted average period of 1.1 years.

Employee Stock Purchase Plan

The 2016 Employee Stock Purchase Plan (the “2016 ESPP”) became effective on June 1, 2016. The 2016 ESPP is considered a compensatory plan and the fair value of the discount and the look-back period are estimated using the Black-Scholes option pricing model and expense is recognized over the six-month withholding period prior to the purchase date.

The share-based compensation expense recognized for the 2016 ESPP is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	2	$	2	$	5	$	5
General and administrative		1		1		1		2
Total	$	3	$	3	$	6	$	7

During the six months ended June 30, 2024, the Company issued 21,681 shares of common stock purchased under the 2016 ESPP.

9. Commitments and Contingencies

Lease Commitment Summary

In November 2022, the Company signed an amended office lease agreement to lease approximately 14,000 square feet of office space in Alpharetta, Georgia for its corporate headquarters. The amended office lease agreement is for a four year term with a renewal option for an additional 38 months. Rental payments are $30,747 per month subject to an increase of 3% per year. Rent expense under this lease is recognized on a straight-line basis over the term of the lease. In addition, the office lease agreement requires payment of the pro-rata share of the annual operating expenses associated with the premises.

The Company recognizes a right-of-use asset for the right to use the underlying asset for the lease term, and a lease liability, which represents the present value of the Company’s obligation to make payments over the lease term. The renewal option is not

included in the calculation of the right-of-use asset and the lease liabilities as the Company has not yet determined if the Alpharetta, Georgia lease will be renewed.

Equipment leases with an initial term of 12 months or less are not recorded with operating lease liabilities. The Company recognizes expense for these leases on a straight-line basis over the lease term. The equipment leases were deemed to be immaterial.

Georgia Tech License Agreement

As described in Note 1, the Company entered into a fourth amendment to the Georgia Tech License Agreement pursuant to which the parties agreed to revised Maintenance Fee payments in exchange for a reduction to the contractual Sublicense Percentage owed by the Company on certain fees and other payments it may receive from future sublicensing activities. The Company paid the Maintenance Fee for 2023 in February 2024. The remaining annual Maintenance Fee payments are due on October 1st of each year from 2024 through 2028, as show in the table below (in thousands).


Year Ending December 31,	Amount
2024	$	250
2025		250
2026		350
2027		400
2028		500
Total	$	1,750

Contract Service Providers

In the course of the Company’s normal business operations, it has agreements with contract service providers to assist in the performance of its research and development, clinical research and manufacturing. Substantially all of these contracts are on an as needed basis.

10. License and Other Agreements

Bausch + Lomb

On October 22, 2019, the Company entered into a License Agreement (as amended, the "Bausch License Agreement") with Bausch + Lomb (“Bausch”). Pursuant to the Bausch License Agreement, the Company has granted an exclusive license to Bausch to develop, manufacture, distribute, promote, market and commercialize XIPERE using the Company’s proprietary SCS Microinjector (the “Device”), as well as specified other steroids, corticosteroids and NSAIDs in combination with the Device (together with XIPERE, the “Products”), subject to specified exceptions, in the United States and Canada (the “Territory”) for the treatment of ophthalmology indications, including non-infectious uveitis.

Pursuant to the Bausch License Agreement, Bausch paid the Company an aggregate of $20.0 million in upfront and milestone payments. In addition, Bausch has agreed to pay up to an aggregate of $55.0 million in additional milestone payments upon the achievement of (i) specified regulatory approvals for specified additional indications of XIPERE and (ii) specified levels of annual net sales (as defined in the Bausch License Agreement). Further, during the applicable royalty term, the Company will also be entitled to receive tiered royalties at increasing percentages, from the high-teens to twenty percent, based on XIPERE achieving certain annual net sales thresholds in the Territory, in each case subject to reductions in specified circumstances; provided that the Company will not receive any royalties on the first $45.0 million of cumulative net sales of all products in the Territory. Bausch launched XIPERE in the United States in the first quarter of 2022. The Company's rights to these royalties and milestone payments have been sold pursuant to the terms and conditions of the Purchase and Sale Agreement described in Note 5.

Arctic Vision (Hong Kong) Limited

On March 10, 2020, the Company entered into a License Agreement (the “Arctic License Agreement”) with Arctic Vision (Hong Kong) Limited (“Arctic Vision”). Pursuant to the Arctic License Agreement, the Company has granted an exclusive license to Arctic Vision to develop, distribute, promote, market and commercialize XIPERE, subject to specified exceptions, in China, Hong Kong, Macau, Taiwan and South Korea (the “Arctic Territory”). Under the terms of the Arctic License Agreement, neither party may commercialize XIPERE in the other party’s territory. Arctic Vision has agreed to use commercially reasonable efforts to pursue the development and commercialization of XIPERE for indications associated with uveitis in the Arctic Territory. In addition, upon receipt of the Company’s consent, Arctic Vision will have the right, but not the obligation, to develop and commercialize XIPERE for additional indications in the Arctic Territory.

Pursuant to the Arctic License Agreement, Arctic Vision has paid the Company an aggregate of $9.0 million in upfront and milestone payments. In addition, Arctic Vision has agreed to pay the Company up to $22.5 million in development and sales milestones. Further, during the applicable royalty term, the Company will also be entitled to receive tiered royalties of ten to twelve percent of net sales based on achieving certain annual net sales thresholds in the Arctic Territory, subject to customary reductions, payable on a product-by-product and country-by-country basis, commencing at launch in such country and lasting until the latest of (i) the date that all valid claims within the licensed patent rights covering XIPERE have expired, (ii) the date of the loss of marketing or

regulatory exclusivity of XIPERE in a given country, or (iii) ten years from the first commercial sale of XIPERE in a given country. The Company's rights to these royalties and milestone payments have been sold pursuant to the terms and conditions of the Purchase and Sale Agreement described in Note 5.

In August 2021, the Company entered into an amendment to the Arctic License Agreement to expand the territories covered by the license to include India and the ASEAN Countries (Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam). In September 2021, the Company entered into a second amendment to the Arctic Vision License Agreement to expand the Arctic Territory to include Australia and New Zealand. The Company received an aggregate of $3.0 million in consideration for the expansion of the Arctic Territory.

BioCryst Pharmaceuticals, Inc.

On November 1, 2023, the Company entered into the BioCryst License Agreement pursuant to which the Company granted BioCryst an exclusive, worldwide and sublicensable license to the Company’s SCS Microinjector for the delivery of BioCryst’s proprietary plasma kallikrein inhibitor known as avoralstat for the treatment and prevention of DME.

The Company received an upfront license fee payment of $5.0 million in connection with signing of the BioCryst License Agreement. In addition, the Company is eligible to receive up to an additional $30.0 million in clinical and regulatory milestone payments, and up to a total of $47.5 million in a series of post-approval sales-based milestone payments based on the achievement of annual global net product sales milestones up to $2.0 billion. Further, during the royalty term, BioCryst has also agreed to pay the Company tiered mid-single digit royalties on annual global net product sales, with the highest royalty rate applied to sales over $1.5 billion, subject to reductions in specified circumstances. The Company amended the BioCryst License Agreement on May 20, 2024. The Company's rights to these royalties and milestone payments have been sold pursuant to the terms and conditions of the Purchase and Sale Agreement described in Note 5.

BioCryst will be responsible for all development, regulatory and commercialization activities for avoralstat. The Company is responsible for supplying SCS Microinjectors to meet BioCryst’s reasonable needs.

Other

The Company periodically enters into short-term agreements with other customers to evaluate the potential use of its proprietary SCS Microinjector with third-party product candidates for the treatment of various diseases. Funds received from these agreements are recognized as revenue over the term of the agreement.

11. Available-for-Sale Investments

The following table summarizes the fair value of the Company's short-term investments by type (in thousands):


	June 30, 2024
	Amortized		Unrealized			Fair
	Cost		Losses			Value
Treasury bills	$	11,123	$	(1	)	$	11,122
Total available-for-sale investments	$	11,123	$	(1	)	$	11,122

12. Fair Value Measurements

The Company’s material financial instruments at June 30, 2024 and December 31, 2023 consisted primarily of cash and cash equivalents and short-term investments. The fair values of cash and cash equivalents, short-term investments, other current assets and accounts payable approximate their respective carrying values due to the short term nature of these instruments and are classified as Level 1 in the fair value hierarchy. The fair value of the warrant liabilities (see Note 7) require significant unobservable inputs and is classified as Level 3 in the fair value hierarchy.

There were no transfers between Levels 1, 2 and 3 during the six months ended June 30, 2024 and the year ended December 31, 2023.

The following table summarizes the assets and liabilities that are measured at fair value and the classification by level of input within the fair value hierarchy (in thousands):


	June 30, 2024
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	18,238	$	—	$	—	$	18,238
Short-term investments		11,122		—		—		11,122
Total assets	$	29,360	$	—	$	—	$	29,360

Liabilities:
Warrant liabilities	$	—	$	—	$	9,121	$	9,121
Total liabilities	$	—	$	—	$	9,121	$	9,121


	December 31, 2023
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	28,920	$	—	$	—	$	28,920
Total assets	$	28,920	$	—	$	—	$	28,920

13. Related Party Transactions

A member of the Company's Board of Directors is the chief executive officer of a company that is a vendor of the Company. As of June 30, 2024, the Company has recorded $40,000 in accounts payable and $0.4 million in accrued expense with this vendor in the consolidated balance sheets. For the three and six months ended June 30, 2024, the Company has recorded $0.2 million and $0.5 million, respectively, of expense related to this vendor in the consolidated statements of operations and comprehensive loss.

The chair of the board of directors of BioCryst also serves on the Company’s Board of Directors. For the three and six months ended June 30, 2024, the Company has recorded $81,000 and $0.2 million, respectively, in license and other revenue in the consolidated statements of operations and comprehensive loss related to the BioCryst License Agreement.

14. Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted average number of shares of common stock outstanding for the period, without consideration of the dilutive effect of potential common stock equivalents. Diluted net loss per share gives effect to all dilutive potential shares of common stock outstanding during this period. For all periods presented, the Company’s potential common stock equivalents, which included stock options, restricted stock units and common stock warrants, have been excluded from the computation of diluted net loss per share as their inclusion would have the effect of reducing the net loss per share. Therefore, the denominator used to calculate both basic and diluted net loss per share is the same in all periods presented. The Company’s potential common stock equivalents that have been excluded from the computation of diluted net loss per share for all periods presented because of their antidilutive effect consisted of the following:


	Six Months Ended June 30,
	2024		2023
Outstanding stock options		12,767,330		9,105,534
Non-vested restricted stock units		437,305		895,666
Common stock warrants		11,140,907		29,796
		24,345,542		10,030,996

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Certain statements contained in this Quarterly Report on Form 10-Q may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. The words or phrases “would be,” “will allow,” “intends to,” “will likely result,” “are expected to,” “will continue,” “is anticipated,” “estimate,” “project,” or similar expressions, or the negative of such words or phrases, are intended to identify “forward-looking statements.” We have based these forward-looking statements on our current expectations and projections about future events. Because such statements include risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Factors that could cause or contribute to these differences include those below and elsewhere in this Quarterly Report on Form 10-Q and our other filings with the Securities and Exchange Commission, or SEC, under the heading “Risk Factors”. Statements made herein are as of the date of the filing of this Form 10-Q with the SEC and should not be relied upon as of any subsequent date. Unless otherwise required by applicable law, we do not undertake, and we specifically disclaim, any obligation to update any forward-looking statements to reflect occurrences, developments, unanticipated events or circumstances after the date of such statement.

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited consolidated financial statements and related notes that appear in Item 1 of this Quarterly Report on Form 10-Q and with our audited consolidated financial statements and related notes for the year ended December 31, 2023 appearing in our Annual Report on Form 10-K filed with the SEC on March 12, 2024.

Overview

We are a biopharmaceutical company focused on revolutionizing the delivery of therapies to the back of the eye through the suprachoroidal space, or SCS®. Our novel SCS injection platform, utilizing our proprietary SCS Microinjector®, enables an in-office, repeatable, non-surgical procedure for the targeted and compartmentalized delivery of a wide variety of therapies to the macula, retina or choroid to potentially preserve and improve vision in patients with sight-threatening eye diseases. Our SCS injection platform can be used in conjunction with existing drugs designed for delivery to the SCS, novel therapies and future therapeutic innovations. We believe our proprietary suprachoroidal administration platform has the potential to become a standard for delivery of therapies intended to treat chorioretinal diseases.

We are leveraging our SCS injection platform by building an internal research and development pipeline targeting retinal diseases and by creating external collaborations with other companies. We are developing our own pipeline of small molecule product candidates for administration via our SCS Microinjector, and we also strategically partner with companies developing other ophthalmic therapeutic innovations to be administered using our SCS injection platform. Our first product, XIPERE® (triamcinolone acetonide injectable suspension) for suprachoroidal use, was approved by the U.S. Food and Drug Administration, or the FDA, in October 2021. Approval of XIPERE was a significant milestone for us as it is the first approved therapeutic delivered into the SCS, the first commercial product developed by us and the first therapy for macular edema associated with uveitis. We believe that we are creating a broad therapeutic platform for developing product candidates to treat serious eye diseases.

The current development status of our pipeline of internal product candidates and external collaborations is summarized in the chart below:

Clinical Development Pipeline

CLS-AX (axitinib injectable suspension)

CLS-AX, our most advanced product candidate, is our proprietary suspension of the TKI axitinib for suprachoroidal injection delivered via our SCS Microinjector. We are developing CLS-AX for administration to the SCS as a long-acting therapy for neovascular age-related macular degeneration (wet AMD), a retinal degenerative disease that causes a progressive loss of central vision.

In February 2023, we announced the final, positive results from the OASIS Phase 1/2a clinical trial in wet AMD. CLS-AX was well-tolerated and demonstrated a favorable safety profile across all cohorts. The full extension data for Cohorts 3 and 4 showed promising durability and signs of biological effect.

Based on the results from the OASIS trial, we are conducting a randomized, controlled, double-masked, Phase 2b clinical trial of CLS-AX for the treatment of wet AMD, which we refer to as ODYSSEY. ODYSSEY will compare CLS-AX suprachoroidal injection and aflibercept intravitreal injection over 36 weeks and is expected to have 60 total participants with a 2:1 randomization. The primary outcome measure is a mean change in best-corrected visual acuity from baseline to week 36. The secondary outcome measures are changes in visual function and ocular anatomy, the need for supplemental treatment and treatment burden as measured by total injections over the trial duration. We began enrolling participants in May 2023 and randomized our first participants in July 2023. On October 31, 2023, we completed the recruitment of participants. The final participant was randomized to the CLS-AX treatment or the aflibercept comparator arm in December 2023. We expect to report topline data late in the third quarter of 2024.

Preclinical

We have an experienced team of scientists and researchers evaluating small molecules that may be utilized as potential treatment options for back of the eye diseases utilizing our SCS Microinjector for delivery in the suprachoroidal space.

External Collaborations Pipeline

In order to expand the global reach of our suprachoroidal injection platform, we have strategically partnered some of our assets for development and/or commercialization and intend to continue partnering our assets. By entering into these partnerships, we have been able to expand the use of our suprachoroidal injection platform to other indications and geographies globally. We currently have collaborations with Bausch Health, Arctic Vision, REGENXBIO, Inc., Aura Biosciences and BioCryst Pharmaceuticals, Inc.

Commercial Product

XIPERE® (triamcinolone acetonide injectable suspension) for suprachoroidal use, was approved by the FDA in October 2021. XIPERE is the first approved therapeutic delivered into the SCS, the first commercial product developed by us and the first therapy for macular edema associated with uveitis. XIPERE commercialization rights are licensed to Bausch + Lomb in the United States and Canada and Arctic Vision in Asia, not including Japan.

ISO and EC Certifications

We have received the International Organization for Standardization (ISO) Certification EN ISO 13485:2016 for “The design, development, and manufacture of sterile piston syringes, needles, and associated accessories for the area of ophthalmology.” The certificate is available on our website. The information contained on our website is not incorporated by reference into this Quarterly Report on Form 10-Q.

We have received European Community (EC) Certification for the SCS Microinjector from our Notified Body, Intertek Medical Notified Body, AB. The Certificate of Conformance with the Medical Device Regulation 2017/745, Annex IV was issued July 21, 2023, with the Intended Purpose of the SCS Microinjector as "delivery of triamcinolone acetonide injectable suspension, 40 mg/mL to the suprachoroidal space of the eye".

Operating Outlook

We have incurred net losses since our inception. In recent years, our operations have consisted primarily of conducting preclinical studies and clinical trials, raising capital and undertaking other research and development initiatives. To date, we primarily generated revenue through upfront payments and milestone payments related to license agreements and from collaboration agreements, and we have primarily financed our operations through public offerings and private placements of our equity securities, issuance of warrants, issuances of convertible promissory notes and loan agreements. As of June 30, 2024, we had an accumulated deficit of $340.3 million. We recorded net losses of $7.6 million and $9.1 million for the three months ended June 30, 2024 and 2023, respectively, and $19.4 million and $18.4 million for the six months ended June 30, 2024 and 2023, respectively. We anticipate that a substantial portion of our capital resources and efforts in the foreseeable future will be focused on completing the necessary development for and obtaining regulatory approval of our product candidates, as well as discovering compounds and developing proprietary formulations to utilize with our SCS Microinjector.

We expect to continue to incur significant and increasing operating losses at least for the next several years. We do not expect to generate significant product or license and other revenue unless and until XIPERE is successfully commercialized by our licensees or until we successfully complete the development of, obtain regulatory approval for and commercialize additional product candidates, either on our own or together with a third party. Our financial results may fluctuate significantly from quarter to quarter and year to year, depending on the timing of our clinical trials and our expenditures on other research and development activities. We expect clinical trial expenses to increase in the remainder of 2024 as a result of our Phase 2b clinical trial of CLS-AX and activities related to preparation for a Phase 3 clinical trial of CLS-AX, as well as continuing our pipeline development. We also will continue our efforts to discover, research and develop additional product candidates and obtain regulatory approvals in additional regions for XIPERE for the treatment of macular edema associated with uveitis.

Macroeconomic Conditions

Unfavorable conditions in the economy in the United States and abroad may negatively affect the growth of our business and our results of operations. For example, macroeconomic events, rising inflation, the U.S. Federal Reserve raising interest rates, and conflicts in Ukraine, Russia and the Middle East have led to economic uncertainty globally. The effect of macroeconomic conditions may not be fully reflected in our results of operations until future periods. If, however, economic uncertainty increases or the global economy worsens, our business, financial condition and results of operations may be harmed. For further discussion of the potential impacts of macroeconomic events on our business, financial condition, and operating results, see “Risk Factors” included in Part I, Item 1A of the Annual Report on Form 10-K filed with the SEC on March 12, 2024.

Components of Operating Results

License and Other Revenue

We have not generated any revenue from the sale of XIPERE and we do not expect to generate any other product revenue unless or until we obtain regulatory approval for and commercialize our other product candidates, either on our own or with a third party. The revenue received under the Bausch license agreement, as well as other certain payments from our licensees, will be recorded as non-cash revenue until we have fulfilled our obligations under the Purchase and Sale Agreement. Our revenue in recent years has been generated primarily from our license agreements. We are seeking to enter into additional licenses and other agreements with third parties to evaluate the potential use of our proprietary SCS Microinjector with the third party’s product candidates for the treatment of various eye diseases. These agreements may include payments to us for technology access, upfront license payments, regulatory and commercial milestone payments and royalties.

Costs of Goods Sold

Cost of goods sold are related to the sales of our SCS Microinjector kits to our licensees for approved products.

Research and Development

Research and development expenses consist primarily of costs incurred for the research and development of our preclinical and clinical product candidates, which include:

•

employee-related expenses, including salaries, benefits, travel and share-based compensation expense for research and development personnel;

•

expenses incurred under agreements with contract research organizations, or CROs, as well as contract manufacturing organizations and consultants that conduct clinical trials and preclinical studies;

•

costs associated with preclinical activities and clinical trials;

•

costs associated with submitting regulatory approval applications for our product candidates;

•

costs associated with training physicians on the suprachoroidal injection procedure and educating and providing them with appropriate product candidate information;

•

costs associated with technology and intellectual property licenses;

•

costs for our research and development facility; and

•

depreciation expense for assets used in research and development activities.

We expense research and development costs to operations as incurred. These costs include preclinical activities, such as manufacturing and stability and toxicology studies, that are supportive of the product candidate itself. In addition, there are expenses related to clinical trials and similar activities for each program, including costs associated with CROs. Clinical costs are recognized based on the terms of underlying agreements, as well as an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations and additional information provided to us by our vendors about their actual costs incurred. Expenses related to activities that support more than one development program or activity, such as salaries, share-based compensation and depreciation, are not classified as direct preclinical costs or clinical costs and are separately classified as unallocated.

The following table shows our research and development expenses by program for the three and six months ended June 30, 2024 and 2023 (in thousands).


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
XIPERE (uveitis program)	$	23	$	48	$	75	$	71
CLS-AX (wet AMD program)		1,763		1,977		4,021		3,337
Total		1,786		2,025		4,096		3,408
Unallocated		2,817		2,923		6,122		5,991
Total research and development expense	$	4,603	$	4,948	$	10,218	$	9,399

Our expenses related to clinical trials are based on estimates of patient enrollment and related expenses at clinical investigator sites as well as estimates for the services received and efforts expended under contracts with research institutions, consultants and CROs that conduct and manage clinical trials on our behalf. We generally accrue expenses related to clinical trials based on contracted amounts applied to the level of patient enrollment and activity according to the protocol. If future timelines or contracts are modified based upon changes in the clinical trial protocol or scope of work to be performed, we would modify our estimates of accrued expenses accordingly on a prospective basis.

Research and development activities are central to our business model. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. However, it is difficult to determine with certainty the duration and completion costs of our current or future preclinical programs and clinical trials of our product candidates, or if, when, or to what extent we will generate revenues from the commercialization and sale of any of our product candidates that obtain regulatory approval. We may never succeed in achieving regulatory approval for any of our current or future product candidates.

The duration, costs and timing of clinical trials and development of our product candidates will depend on a variety of factors that may include, among others:

•

the costs associated with process development, scale-up and manufacturing of our product candidates including the SCS Microinjector for clinical trials and for requirements associated with regulatory filings;

•

the number of trials required for approval and any requirement for extension trials;

•

per patient trial costs;

•

the number of patients that participate in the trials;

•

the number of sites included in the trials;

•

the countries in which the trials are conducted;

•

the length of time required to enroll eligible patients;

•

the number of doses that patients receive;

•

the drop-out or discontinuation rates of patients;

•

potential additional safety monitoring or other studies requested by regulatory agencies;

•

the duration of patient follow-up; and

•

the efficacy and safety profiles of the product candidates.

In addition, the probability of success for each product candidate will depend on numerous factors, including competition, manufacturing capability and commercial viability. We will determine which programs to pursue and how much to fund each program in response to the scientific and clinical success of each product candidate, as well as an assessment of each product candidate’s commercial potential.

General and Administrative

General and administrative expenses consist primarily of salaries and other related costs, including share-based compensation, for personnel in executive, finance and administrative functions. General and administrative costs historically included commercial pre-launch preparations for XIPERE, and also include facility related costs not otherwise included in research and development expenses, as well as professional fees for legal, patent, consulting, and accounting and audit services.

Interest Income

Interest income consists of the accrued interest and interest income earned on our cash and cash equivalents. Interest income is not considered significant to our consolidated financial statements.

Other Income, Net

Other income, net consists of expenses allocated to the warrants issued in connection with our registered direct offering in February 2024 and the change in fair value during the period.

Non-cash Interest Expense on Liability Related to the Sales of Future Royalties

Non-cash interest expense on liability related to the sales of future royalties consists of imputed interest on the carrying value of the liability and the amortization of the related issuance costs.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles or U.S. GAAP. The preparation of these consolidated financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the dates of the consolidated balance sheets and the reported amounts of expenses during the reporting periods. In accordance with U.S. GAAP, we evaluate our estimates and judgments on an ongoing basis. Significant estimates include assumptions used in the determination of share-based compensation and some of our research and development expenses. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

We define our critical accounting policies as those accounting principles generally accepted in the United States of America that require us to make subjective estimates and judgments about matters that are uncertain and are likely to have a material impact on our consolidated financial condition and results of operations, as well as the specific manner in which we apply those principles. During the six months ended June 30, 2024, there were no significant changes to our critical accounting policies disclosed in our audited consolidated financial statements for the year ended December 31, 2023, which are included in our Annual Report on Form 10-K, as filed with the SEC on March 12, 2024, other than the warrant liabilities discussed in Note 2 to the consolidated financial statements.

Results of Operations for the Three Months Ended June 30, 2024 and 2023

The following table sets forth our results of operations for the three months ended June 30, 2024 and 2023.


	Three Months Ended June 30,						Period-to-Period
	2024			2023			Change
	(in thousands)
License and other revenue	$	90		$	1,018		$	(928	)
Operating expenses:
Cost of goods sold		—		213				(213	)
Research and development		4,603			4,948			(345	)
General and administrative		3,077			3,127			(50	)
Total operating expenses		7,680			8,288			(608	)
Loss from operations		(7,590	)		(7,270	)		(320	)
Interest income		419			458			(39	)
Other income, net		1,917			—			1,917
Non-cash interest expense on liability related to the sales of future royalties		(2,340	)		(2,294	)		(46	)
Net loss	$	(7,594	)	$	(9,106	)	$	1,512

License and other revenue. In the three months ended June 30, 2024 and 2023, we recognized $90,000 and $1.0 million, respectively, of revenue associated with our license agreements, which includes revenue for services and the sales of our SCS Microinjector kits to our licensees.

Cost of goods sold. In the three months ended June 30, 2023, we recognized $0.2 million in cost of goods sold related to the sales of our SCS Microinjector kits to our licensees of approved products.

Research and development. Research and development expenses decreased by $0.3 million from $4.9 million for the three months ended June 30, 2023 to $4.6 million for the three months ended June 30, 2024. This decrease was primarily due to a $0.2 million decrease in costs related to the CLS-AX program, which includes costs for ODYSSEY, our Phase 2b clinical trial, a $0.2 million decrease in costs related to development of the SCS Microinjector and a $0.1 million decrease in costs in our preclinical programs. This is partially offset by a $0.2 million increase in recruiting and employee related costs.

General and administrative. General and administrative expenses were $3.1 million for each of the three months ended June 30, 2024 and 2023. This includes a $0.3 million decrease in professional fees offset by a $0.3 million increase in consulting and investor related fees.

Interest income. Interest income decreased by $0.1 million from $0.5 million for the three months ended June 30, 2023 to $0.4 million for the three months ended June 30, 2024. The decrease is due to the lower balance of our cash, cash equivalents and short-term investments.

Other income, net. Other income, net was $1.9 million for the three months ended June 30, 2024 and was due to the decrease in fair value of the warrant liabilities from the March 31, 2024 valuation date.

Non-cash interest expense on liability related to the sales of future royalties. Non-cash interest expense on liability related to the sales of future royalties was $2.3 million for each of the three months ended June 30, 2024 and 2023 and was comprised of imputed interest on the liability related to the sales of future royalties and the amortization of the associated issuance costs.

Results of Operations for the Six Months Ended June 30, 2024 and 2023

The following table sets forth our results of operations for the six months ended June 30, 2024 and 2023.


	Six Months Ended June 30,						Period-to-Period
	2024			2023			Change
	(in thousands)
License and other revenue	$	320		$	1,022		$	(702	)
Operating expenses:
Cost of goods sold		—			213			(213	)
Research and development		10,218			9,399			819
General and administrative		5,901			6,285			(384	)
Total operating expenses		16,119			15,897			222
Loss from operations		(15,799	)		(14,875	)		(924	)
Interest income		767			950			(183	)
Other income, net		418			—			418
Non-cash interest expense on liability related to the sales of future royalties		(4,743	)		(4,461	)		(282	)
Net loss	$	(19,357	)	$	(18,386	)	$	(971	)

License and other revenue. In the six months ended June 30, 2024 and 2023, we recognized $0.3 million and $1.0 million, respectively, of revenue associated with our license agreements, which includes revenue for services and the sales of our SCS Microinjector kits to our licensees.

Cost of goods sold. In the six months ended June 30, 2023, we recognized $0.2 million in cost of goods sold related to the sales of our SCS Microinjector kits to our licensees.

Research and development. Research and development expenses increased by $0.8 million from $9.4 million for the six months ended June 30, 2023 to $10.2 million for the six months ended June 30, 2024. This increase was primarily due to a $0.7 million increase in costs related to the CLS-AX program, which includes costs for ODYSSEY, our Phase 2b clinical trial. In addition, there was a $0.4 million research and development tax credit received in the prior year. This is partially offset by a $0.7 million decrease in costs related to our preclinical programs.

General and administrative. General and administrative expenses decreased by $0.4 million, from $6.3 million for the six months ended June 30, 2023 to $5.9 million for the six months ended June 30, 2024. This was primarily attributable to a $0.5 million decrease in professional fees partially offset by a $0.2 million increase in consulting and investor-related fees.

Interest income. Interest income for the six months ended June 30, 2024 and 2023 was comprised of interest income from cash and cash equivalents. The decrease is due to the lower balance of our cash, cash equivalents and short-term investments.

Other income, net. Other income, net was $0.4 million for the six months ended June 30, 2024 and was due to the decrease in fair value of the warrant liabilities of $1.2 million from February 9, 2024, the issuance date of the warrants, to June 30, 2024 partially offset by $0.8 million of direct registered offering costs that were allocated to the warrants.

Non-cash interest expense on liability related to the sales of future royalties. Non-cash interest expense on liability related to the sales of future royalties was $4.7 million and $4.5 million for the six months ended June 30, 2024 and 2023, respectively, and was comprised of imputed interest on the liability related to the sales of future royalties and the amortization of the associated issuance costs.

Liquidity and Capital Resources

Sources of Liquidity

We have funded our operations primarily through the proceeds of public offerings of our common stock, sales of convertible preferred stock, issuance of warrants and the issuance of long-term debt. As of June 30, 2024, we had cash, cash equivalents and short-term investments of $29.4 million. We invest any cash in excess of our immediate requirements primarily with a view to liquidity and capital preservation. As of June 30, 2024, our funds were held in cash, money market funds and treasury bills.

On February 6, 2024, we entered into the Purchase Agreement, pursuant to which we issued and sold, in a registered direct offering: (i) an aggregate of 11,111,111 shares of our common stock; and (ii) 11,111,111 Warrants. The combined purchase price of each share and accompanying Warrant was $1.35. The exercise price for the Warrants is $1.62 per share. The Warrants will be exercisable from August 9, 2024 and will expire on August 9, 2029. The net proceeds to us from the Registered Direct Offering were $13.9 million.

On January 31, 2024, or the Amendment Effective Date, we entered into a fourth amendment to the license agreement, or the Emory License Agreement, with Emory University and Georgia Tech Research Corporation, or, collectively, the Licensor, pursuant to which the parties agreed to reduce the Sublicense Percentage (as defined in the Emory License Agreement) from a low double digit percentage to a high single digit percentage that we will pay the Licensor applicable to any fees or payments paid to us by any Sublicensee (as defined in the Emory License Agreement) of the Licensed Patents and/or Licensed Technology (each as defined in the Emory License Agreement), excluding (i) amounts paid to us by a Sublicensee to reimburse us for certain research and development costs pursuant to a written agreement between us and such Sublicensee, (ii) the value of intellectual property transferred or granted to us if necessary or helpful to the development or commercialization of Licensed Products (as defined in the Emory License Agreement) and (iii) amounts paid for shares of our stock. The payment to Licensor of any such Sublicense Percentage is due within 30 days of receipt by us of a qualifying payment from a Sublicensee, provided however, with respect to any qualifying payments received by us from a Sublicensee prior to January 1, 2025, the payment to Licensor of any such Sublicensee Percentage is due to Licensor by March 31, 2025. The parties also agreed to a revised annual license maintenance fee due each year, or the Maintenance Fee, starting in 2023 through 2028, as follows: $0.3 million for 2023 through 2025, $0.4 million for 2026, $400,000 for 2027 and $0.5 million for 2028. We paid the Maintenance Fee for 2023 in February 2024. The remaining annual Maintenance Fee payments are due on October 1st of each year.

On December 22, 2023, we, through our wholly owned subsidiary Royalty Sub, entered into a letter agreement, or the Letter Agreement, with HCR and HCR Clearside SPV, LLC (as assignee of HCR Collateral Management, LLC), or the Agent, amending that certain Purchase and Sale Agreement, dated as of August 8, 2022, by and among Royalty Sub, HCR and Agent. Pursuant to the terms of the Letter Agreement, Royalty Sub and Agent mutually agreed that Royalty Sub waived any and all rights to the $12.5 million milestone payment which was deposited in an escrow account, or the First Milestone Payment, in connection with the closing of the transactions contemplated by the Purchase and Sale Agreement and agreed to the release of the First Milestone Payment to Agent.

In November 2023, we entered into a license agreement, or the BioCryst License Agreement, with BioCryst Pharmaceuticals, Inc., or BioCryst, pursuant to which we granted BioCryst an exclusive, worldwide and sublicensable license to our SCS Microinjector for the delivery of BioCryst’s proprietary plasma kallikrein inhibitor known as avoralstat for the treatment and prevention of diabetic macular edema, or DME. We received an upfront license fee payment of $5.0 million in connection with signing of the BioCryst License Agreement. In addition, we are eligible to receive up to an additional $30.0 million in clinical and regulatory milestone payments, and up to a total of $47.5 million in a series of post-approval sales-based milestone payments based on the achievement of annual global net product sales milestones up to $2.0 billion. Further, during the royalty term, BioCryst has also agreed to pay us tiered mid-single digit royalties on annual global net product sales, with the highest royalty rate applied to sales over $1.5 billion, subject to reductions in specified circumstances. Our rights to these royalties and milestone payments have been sold pursuant to the terms and conditions of the Purchase and Sale Agreement described in Note 5 to our consolidated financial statements included in this Quarterly Report on Form 10-Q.

In May 2023, we terminated our at-the-market sales agreement with Cowen and Company, LLC (the "ATM Agreement"). During the six months ended June 30, 2023, prior to the termination of the ATM Agreement, we sold 515,959 shares of our common stock for net proceeds of $0.7 million under the ATM Agreement.

In May 2023, we entered into a Controlled Equity OfferingSM Sales Agreement (the "Sales Agreement") with Cantor Fitzgerald & Co., or Cantor, under which we may offer and sell, from time to time at our sole discretion, shares of our common stock, having an aggregate offering price of up to $50.0 million through Cantor as our sales agent. During the six months ended June 30, 2024, we sold 339,912 shares of our common stock for net proceeds of $0.5 million under the Sales Agreement. During the six months ended June 30, 2023, we sold 26,316 shares of our common stock for net proceeds of $32,000 under the Sales Agreement.

Funding Requirements

Our primary uses of capital are, and we expect will continue to be, compensation and related expenses, research and development costs to build our product candidate pipeline, legal and other regulatory expenses and general overhead costs. In addition, we have certain contractual obligations for future payments. Refer to Note 5 to our consolidated financial statements included in this Quarterly Report on Form 10-Q.

The successful development of our product candidates is highly uncertain. As such, at this time, we cannot reasonably estimate or know the nature, timing and estimated costs of the efforts that will be necessary to complete the remainder of the development of CLS-AX or any future product candidates. We are also unable to predict when, if ever, material net cash inflows will commence from product sales. This is due to the numerous risks and uncertainties associated with developing drugs, including the uncertainty of:

•

successful enrollment in, and completion of, clinical trials;

•

receipt of marketing approvals from applicable regulatory authorities;

•

establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

•

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our product candidates; and

•

launching commercial sales of the products, if and when approved, whether alone or in collaboration with others.

A change in the outcome of any of these variables with respect to the development of any of our product candidates would significantly change the costs and timing associated with the development of that candidate.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity offerings, debt financings and potential collaboration, license and development agreements. Other than potential payments we may receive under our license and other agreements, we do not currently have any committed external source of funds, though, as described above, we may also be able to sell our common stock under the Sales Agreement with Cantor subject to the terms of that agreement and depending on market conditions. We expect that we will require additional capital to fund our ongoing operations. Additional funds may not be available to us on a timely basis, on commercially reasonable terms, or at all. Our ability to raise additional capital may be adversely impacted by potential worsening global economic conditions and disruptions to, and volatility in, the credit and financial markets in the United States and worldwide and related macroeconomic changes, such as rising inflation. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a common stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

If we raise funds through additional collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, including any future collaboration or licensing arrangement for XIPERE outside of the territories in which we have previously licensed or granted options to license XIPERE, we may be required to relinquish additional rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our drug development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

We also incur costs as a public company, including costs and expenses for fees to members of our board of directors, accounting and finance personnel costs, directors and officers insurance premiums, audit and legal fees, investor relations fees and expenses for compliance with reporting requirements under the Exchange Act and rules implemented by the SEC and Nasdaq.

Outlook

We have suffered recurring losses and negative cash flows from operations since inception and anticipate incurring additional losses until such time, if ever, that we can generate significant milestone payments and royalties from XIPERE and other licensing arrangements or revenues from other product candidates. We will need additional financing to fund our operations. Our plans primarily consist of raising additional capital, potentially in a combination of equity or debt financings, monetizing royalties, or restructurings, or potentially entering into additional collaborations, partnerships and other strategic arrangements.

Based on our current plans and forecasted expenses, we expect that our cash, cash equivalents and short-term investments as of the filing date, August 12, 2024 will enable us to fund our planned operating expenses and capital expenditure requirements into the third quarter of 2025. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our capital resources sooner than we expect. We will require additional capital in order to complete the clinical development of CLS-AX.

These factors raise substantial doubt regarding our ability to continue as a going concern. Our consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. The consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result should we be unable to continue as a going concern

Cash Flows

The following is a summary of the net cash flows (used in) provided by our operating, investing and financing activities (in thousands):


	Six Months Ended June 30,
	2024			2023
Net cash (used in) provided by:
Operating activities	$	(13,531	)	$	(12,555	)
Investing activities		(11,494	)		(1,212	)
Financing activities		14,343			354
Net change in cash and cash equivalents	$	(10,682	)	$	(13,413	)

During the six months ended June 30, 2024 and 2023, our operating activities used net cash of $13.5 million and $12.6 million, respectively. The net cash used in operating activities for the six months ended June 30, 2024 was due to ongoing research and development expenses to develop our pipeline and ongoing costs for ODYSSEY, as well as the supporting general and administrative costs. The net cash used in operating activities for the six months ended June 30, 2023 was due to ongoing research and development expenses to develop our pipeline and startup costs for ODYSSEY, as well as the supporting general and administrative costs.

During the six months ended June 30, 2024 and 2023, our investing activities used net cash of $11.5 million and $1.2 million, respectively. The net cash used in investing activities for the six months ended June 30, 2024 consisted of $11.0 million for the purchase of short-term investments and $0.5 million for the acquisition of property and equipment. The net cash used in investing activities for the six months ended June 30, 2023 consisted of $1.2 million for the acquisition of property and equipment.

During the six months ended June 30, 2024 and 2023, our financing activities provided net cash of $14.3 million and $0.4 million, respectively. The cash provided by financing activities for the six months ended June 30, 2024 consisted primarily of $13.9 million of net proceeds from the sale of shares of our common stock in a registered direct offering and $0.5 million of net proceeds from the sale of shares of our common stock under the Sales Agreement. The cash provided by financing activities for the six months ended June 30, 2023 consisted primarily of $0.3 million of proceeds received from the sale of our common stock under the ATM Agreement partially offset by a payment of $0.4 million related to the Purchase and Sale Agreement.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and are not required to provide the information required under this item.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), refers to controls and procedures that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that such information is accumulated and communicated to a company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures, management recognizes that disclosure controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Additionally, in designing disclosure controls and procedures, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a control system, misstatements due to error or fraud may occur and not be detected.

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There has been no change in our internal control over financial reporting during the quarter ended June 30, 2024 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting. We have not experienced any material impact to our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may be subject to litigation and claims arising in the ordinary course of business. We are not currently a party to any material legal proceedings and we are not aware of any pending or threatened legal proceeding against us that we believe could have a material adverse effect on our business, operating results, cash flows or financial condition.

Item 1A. Risk Factors

Our business is subject to risks and events that, if they occur, could adversely affect our financial condition and results of operations and the trading price of our securities. In addition to the other information set forth in this quarterly report on Form 10-Q, you should carefully consider the factors described below and in “Part I, Item 1A. Risk Factors” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the Securities and Exchange Commission on March 12, 2024.

Our consolidated financial statements have been prepared assuming that we will continue as a going concern.

Our historical financial statements have been prepared under the assumption that we will continue as a going concern. As of June 30, 2024, we had an accumulated deficit of $340.3 million and we had cash, cash equivalents and short-term investments of $29.4 million. These conditions raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date the financial statements are issued. Based on its current plans and forecasted expenses, the Company expects that its cash, cash equivalents and short-term investments as of the filing date, August 12, 2024, will enable the Company to fund its planned operating expenses and capital expenditure requirements into the third quarter of 2025. The Company has based this estimate on assumptions that may prove to be wrong, and it could exhaust its capital resources sooner than expected. Until the Company can generate sufficient revenue, the Company will need to finance future cash needs through public or private equity offerings, license agreements, debt financings or restructurings, collaborations, strategic alliances and marketing or distribution arrangements.

The perception of our ability to continue as a going concern may make it more difficult for us to obtain financing for the continuation of our operations and could result in the loss of confidence by investors and employees. Additionally, if we are unable to continue as a going concern, our stockholders may lose some or all of their investment in the Company.

Additional financing may not be available to us when needed or, if available, it may not be obtained on commercially reasonable terms. If we are not able to obtain the necessary additional financing on a timely or commercially reasonable basis, we will be forced to delay or scale down some or all of our development activities (or perhaps even cease the operation of our business). Our access to additional capital may be negatively affected by future recessions, downturns in the economy or the markets as a whole, or inflation.

We have no commitments for any additional financing and such commitments may not be obtained on favorable terms, if at all. Any additional equity financing will be dilutive to our stockholders, and debt financing, if available, may involve restrictive covenants with respect to dividends, raising future capital, and other financial and operational matters. If we are unable to obtain additional financing as needed, we may be required to reduce the scope of our operations or our anticipated expansion, which could have a material adverse effect on us.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Sales of Unregistered Securities

None.

Issuer Purchases of Equity Securities

None.

Item 5. Other Information

During the quarter ended June 30, 2024, none of our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) adopted, modified or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement” (as each term is defined in Item 408 of Regulation S-K).

Item 6. Exhibits


Exhibit No.		Description

3.1		Amended and Restated Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (File No. 001-37783) filed with the SEC on June 7, 2016).

3.2		Certificate of Amendment to Amended and Restated Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K (File No. 001-37783) filed with the SEC on June 23, 2022).

3.3		Amended and Restated Bylaws (incorporated herein by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K (File No. 001-37783) filed with the SEC on June 7, 2016).

10.1*^		First Amendment to License Agreement, by and among the Registrant and BioCryst Pharmaceuticals, Inc., dated as of May 20, 2024.

10.2*+		Employment Agreement, by and between Registrant and Victor Chong, dated as of June 19, 2024.

31.1*		Certification of Principal Executive Officer under Section 302 of the Sarbanes-Oxley Act.

31.2*		Certification of Principal Financial Officer under Section 302 of the Sarbanes-Oxley Act.

32.1**		Certifications of Principal Executive Officer and Principal Financial Officer under Section 906 of the Sarbanes-Oxley Act.

101.INS		Inline XBRL Instance Document

101.SCH		Inline XBRL Taxonomy Extension Schema Document with Embedded Linkbase Documents

104		Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)


*	Filed herewith.
**	These certifications are being furnished solely to accompany this quarterly report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not to be incorporated by reference into any filing of the registrant, whether made before or after the date hereof, regardless of any general incorporation language in such filing.
+	Indicates management contract or compensatory plan.
^	Pursuant to Item 601(b)(10)(iv) of Regulation S-K promulgated by the Securities and Exchange Commission, certain portions of this exhibit (indicated by asterisks) have been omitted because they are not material and are the type that the Registrant treats as private or confidential. The Registrant hereby agrees to furnish supplementally to the Securities and Exchange Commission, upon its request, an unredacted copy of this exhibit.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	Clearside Biomedical, Inc.

Date: August 12, 2024	By:	/s/ Charles A. Deignan
		Charles A. Deignan
		Chief Financial Officer
		(On behalf of the Registrant and as Principal Financial Officer)

Exhibit 10.1

Certain information has been excluded from this agreement (indicated by “[***]”) because such information is both (a) not material and (b) the type that the registrant customarily and actually treats as private or confidential.

AMENDMENT 1 TO THE LICENSE AGREEMENT

THIS FIRST AMENDMENT to the LICENSE AGREEMENT (the “Amendment”) is made and entered into on this 20th day of May 2024 (the “Amendment Effective Date”), by and between BioCryst Pharmaceuticals, Inc. (“BioCryst”) and Clearside Biomedical, Inc. (“Clearside”). All undefined terms contained herein shall have the meaning set forth in the Agreement.

RECITALS

WHEREAS, BioCryst and Clearside entered into the License Agreement having an effective date of November 1, 2023 (the “Agreement”);

WHEREAS, the Parties now wish to amend the Agreement in consideration of the mutual terms, conditions, and covenants hereinafter set forth.

NOW, THEREFORE, in consideration of the foregoing, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, BioCryst and Clearside, intending to be legally bound, have agreed to amend the terms of the Agreement as follows:

Section 1.100 of the Agreement shall be deleted in its entirety and is hereby replaced with the following:

“1.100 [***]”

Except as expressly amended hereby, the Agreement shall remain in full force and effect in accordance with its terms.

This Amendment may be executed in counterparts, each of which shall be deemed an original, but all of which together shall be deemed to be one and the same agreement. A signed copy of this Amendment delivered by facsimile, e-mail, or other means of electronic transmission shall be deemed to have the same legal effect as delivery of an original signed copy of this Amendment.

IN WITNESS WHEREOF, the parties have executed this Amendment as of the Amendment Effective Date.

    Clearside Medical, Inc.

    BioCryst Pharmaceuticals, Inc.

     
Signature: George Lasezkay

Signature: Alane Phillips Barnes

     
Name: /s/ George Lasezkay

Name: /s/ Alane Phillips Barnes

     
Title: CEO

Title: Sr. VP and Chief Legal Officer

Exhibit 10.2

EXECUTIVE EMPLOYMENT AGREEMENT

THIS EXECUTIVE EMPLOYMENT AGREEMENT (the “Agreement”), is entered into effective as of June 19, 2024, (the “Effective Date”), by and between Clearside Biomedical, Inc., a Delaware corporation (the “Company”), and Victor Chong (the “Executive”), an individual residing in California.

W I T N E S S E T H:

WHEREAS, the Company and Executive desire to set forth the terms and conditions of the Executive’s employment from and after the Effective Date.

NOW, THEREFORE, in consideration of the foregoing, of the mutual promises herein, and of other good and valuable consideration, including the employment of the Executive by the Company and the compensation to be received by the Executive from the Company from time to time, and specifically the compensation to be received by the Executive pursuant to Section 4 hereof, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending legally to be bound, hereby agree as follows:

. Employment. The Company hereby employs the Executive and the Executive hereby accepts employment as the Executive Vice President Chief Medical Officer of the Company upon the terms and conditions of this Agreement.

2. Duties. The Executive shall faithfully perform all duties of the Company related to the position or positions held by the Executive, including but not limited to all duties set forth in this Agreement and/or in the Bylaws of the Company related to the position or positions held by the Executive and all additional duties that are prescribed from time to time by the Chief Executive Officer of the Company. The Executive shall devote the Executive’s full time and attention to the performance of the Executive’s duties and responsibilities on behalf of the Company and in furtherance of its best interests; provided, however, that the Executive, subject to the Executive’s obligations hereunder, shall also be permitted to make personal investments, perform reasonable volunteer services and, with the prior consent of the Company, serve on outside boards of directors for non-profit corporations. The Executive shall comply with all Company policies, standards, rules and regulations (the “Company Policies”) and all applicable government laws, rules and regulations that are now or hereafter in effect. The Executive acknowledges receipt of copies of all written Company Policies that are in effect as of the date of this Agreement.

3. Term. Unless earlier terminated as provided herein, the initial term of this Agreement shall commence on the Effective Date and shall continue until December 31, 2024. Thereafter, this Agreement shall automatically renew on a year-to-year basis on the same terms and conditions set forth herein unless: (a) earlier terminated or amended as provided herein or (b) either party gives written notice of non-renewal at least 60 days prior to the end of the initial term or any renewal term of this Agreement. The initial term of this Agreement and all renewals thereof are referred to herein as the “Term.”

4. Compensation. During the Term, as compensation for the services rendered by the Executive under this Agreement, the Executive shall be entitled to receive the following (all payments are subject to applicable withholdings):

() Base Salary. The Executive shall receive a monthly salary at a rate of $37,500 (equal to an annual salary rate of $450,000 payable in accordance with the then-current payroll schedule of the Company (the “Base Salary”). The Executive’s salary may be increased from time to time by the Board of Directors of the Company or the compensation committee thereof (collectively, the “Board”).

(b) Bonuses. The Executive shall be eligible to participate in all bonus or similar incentive plans adopted by the Board. The amount awarded, if any, to the Executive under any bonus or incentive plan shall be in the discretion of the Board, based on its assessment of the Executive’s and the Company’s performance during the relevant period, but it is the expectation of the Company that any such bonus would be up to 40% of the Executive’s then-current annual Base Salary (the “Target Bonus”). If a bonus is awarded, unless otherwise specifically provided by the Board or committee administering such plan: (i) it shall be paid between January 1 and March 15 of the year following the year in which such bonus was earned; and (ii) except as otherwise expressly provided in Section 5(d)(ii)(2) or 5(d)(iii)(2), Executive must remain employed on such payment date in order to be entitled to such Target Bonus.

(c) Options. In connection with the Executive’s employment, the Company has issued to the Executive options to purchase shares of the common stock of the Company (the “Options”). The Options have vested or shall vest in accordance with the terms of the stock option Agreements. During the Term of the Agreement, Executive will be eligible to receive additional stock options, restricted stock grants, or other equity incentive awards under or outside of any current or successor equity incentive plans of the Company, as the Board in its sole discretion determines to be appropriate (any such awards, collectively with the Options, “Equity Awards”).

(d) Benefits. The Executive shall be entitled to receive those benefits provided from time to time to other executive employees of the Company, in accordance with the terms and conditions of the applicable plan documents; provided that the Executive meets the eligibility requirements thereof. All such benefits are subject to amendment or termination from time to time by the Company without the consent of the Executive or any other employee of the Company.

(e) Vacation. The Executive shall be entitled to 4 weeks paid vacation per calendar year (with the vacation for any partial year being prorated) and shall be entitled to carry over a maximum of two weeks of the total Vacation days earned in one calendar year to the subsequent calendar year. Upon the termination of the Executive’s employment with the Company, no cash shall be paid in lieu of accrued but unused vacation unless otherwise required by applicable law.

(f) Business Expenses. The Company shall pay, or reimburse the Executive for, all reasonable expenses incurred by the Executive directly related to conduct of the business of the Company; provided that, the Executive complies with the Company’s policies for the reimbursement or advancement of business expenses that are now or hereafter in effect.

5. Termination. This Agreement and the Executive’s employment by the Company shall or may be terminated, as the case may be, as follows:

(a)

Termination upon Expiration of the Term. This Agreement and the Executive’s employment by the Company shall terminate upon the expiration of the Term, unless renewed.

(b)

Termination by the Executive. The Executive may terminate this Agreement and Executive’s employment by the Company:

(i) for “Good Reason” (as defined herein). For purposes of this Agreement, “Good Reason” shall mean, the existence, without the consent of the Executive, of any of the following events: (A) the Executive’s duties and responsibilities or salary are substantially reduced or diminished; (B) the Company materially breaches its obligations under this Agreement; or (C) the Executive’s place of employment is relocated by more than 50 miles. In addition to any requirements set forth above, in order for any of the above events to constitute “Good Reason”, the Executive must (X) provide written notice to the CEO or the Board of the existence of the event within 30 days of the initial existence of the event, after which date the Company shall have 60 days to cure the event which otherwise would constitute “Good Reason” hereunder, and (Y) notify Company in writing and with specificity if the Company’s cure was insufficient, and if such notice is provided, the Executive must terminate the Executive’s employment with the Company for such “Good Reason” no later than 60 days after the end of the Company’s cure period set forth in (X), above.

(ii) Other than for Good Reason, 30 days after notice to the Company.

(c)

Termination by the Company. The Company may terminate this Agreement and the Executive’s employment by the Company upon notice to the Executive (or Executive’s personal representative):

(i) at any time and for any reason;

(ii) upon the death of the Executive, in which case this Agreement shall terminate immediately; provided that, such termination shall not prejudice any benefits payable to the Executive’s spouse or beneficiaries which are fully vested as of the date of death;

(iii) if the Executive is “permanently disabled” (as defined herein), in which case this Agreement shall terminate immediately; provided that, such termination shall not prejudice any benefits payable to the Executive, the Executive’s spouse or beneficiaries which are fully vested as of the date of the termination of this Agreement. For purposes of this Agreement, the Executive shall be considered “permanently disabled” when a qualified medical doctor mutually acceptable to the Company and the Executive or the Executive’s personal representative shall have certified in writing that: (A) the Executive is unable, because of a medically determinable physical or mental disability, to perform substantially all of the Executive’s duties, with or without a reasonable accommodation, for more than 180 calendar days measured from the last full day of work; or (B) by reason of mental or physical disability, it is unlikely that the Executive will be able, within 180 calendar days, to resume substantially all business duties and

responsibilities in which the Executive was previously engaged and otherwise discharge the Executive’s duties under this Agreement;

(iv) upon the liquidation, dissolution or discontinuance of business by the Company in any manner or the filing of any petition by or against the Company under any federal or state bankruptcy or insolvency laws, which petition shall not be dismissed within 60 days after filing; provided that, such termination shall not prejudice the Executive’s rights as a stockholder or a creditor of the Company; or

(v) “for cause” (as defined herein). “For cause” shall be determined by the Board by a majority vote without the participation of the Executive in such vote and shall mean:

(A) Any material breach of the terms of this Agreement by the Executive, or the failure of the Executive to diligently and properly perform the Executive’s duties for the Company or the Executive’s failure to achieve the objectives specified by the CEO or the Board , which breach or failure is not cured within 30 days after written notice thereof;

(B) The Executive’s misappropriation or unauthorized use of the Company’s tangible or intangible property, or breach of the Proprietary Information Agreement (as defined herein) or any other similar agreement regarding confidentiality, intellectual property rights, non-competition or non-solicitation;

(C) Any material failure to comply with the Company Policies or any other policies and/or directives of the Board, which failure is not cured within 30 days after written notice thereof; provided, however, in the case of failure to comply with Company Policies related to harassment, unlawful discrimination, retaliation or workplace violence a 30 day cure period and written notice thereof is not required;

(D) The Executive’s use of illegal drugs or any illegal substance, or the Executive’s use of alcohol in any manner that materially interferes with the performance of the Executive’s duties under this Agreement;

(E) Any dishonest or illegal action (including, without limitation, embezzlement) or any other action whether or not dishonest or illegal by the Executive which is materially detrimental to the interest and well-being of the Company, including, without limitation, harm to its reputation;

(F) The Executive’s failure to fully disclose any material conflict of interest that the Executive may have with the Company in a transaction between the Company and any third party which is materially detrimental to the interest and well-being of the Company; or

(G) Any adverse action or omission by the Executive which would be required to be disclosed pursuant to public securities laws or which would limit the ability of the Company or any entity affiliated with the Company to sell securities under any

Federal or state law or which would disqualify the Company or any affiliated entity from any exemption otherwise available to it.

(d)

Obligations of the Company Upon Termination.

(i) Upon the termination of this Agreement: (A) pursuant to the expiration of the Term upon notice of non-renewal of the Term given by the Executive; (B) by the Executive pursuant to paragraph 5(b)(ii); or (C) by the Company pursuant to paragraph 5(c)(ii), (iii), (iv), or (v), the Company shall have no further obligations hereunder other than the payment of all compensation and other benefits payable to the Executive through the date of such termination which shall be paid on or before the Company’s next regularly scheduled payday unless such amount is not then-calculable, in which case payment shall be made on the first regularly scheduled payday after the amount is calculable.

(ii) Upon termination of this Agreement: Except as provided for in Section 5(d)(iii) in the case of a Termination of this Agreement in Connection with a “Change in Control” or “Corporate Transaction” (as each such term is defined in the Clearside Biomedical, Inc. 2016 Stock Incentive Plan, as amended from time to time): (A) by the Executive pursuant to paragraph 5(b)(i), or (B) by the Company pursuant to paragraph 5(c)(i) or upon notice of non-renewal of the Term given by the Company and, in any such case, provided that the Executive first executes and does not revoke a release and settlement agreement in the form acceptable to the Company within the time period then-specified by the Company but in any event no later than 60 days after the date of termination (the “Release”):

(1) the Company shall pay the Executive an amount equal to 12 months (the “Severance Period”) of Executive’s then-current Base Salary (less all applicable deductions) payable in installments in accordance with the then-current generally applicable payroll schedule of the Company commencing on the first regularly scheduled pay date of the Company processed after Executive has executed, delivered to the Company and not revoked the Release;

(2) provided that the Executive has been employed for at least six months during the calendar year of the termination of this Agreement, the Company shall pay the Executive an amount equal to the prorated percentage (based on the number of days of the Executive’s employment during the year of termination) of the portion of the Target Bonus the Executive would have earned under Section 4(b) for the applicable calendar year (less all applicable deductions), payable in a lump sum on the first payroll cycle following January 1 of the year following the year in which this Agreement is terminated. For illustration, if the Executive’s employment is terminated as of September 30 of a year and the Board determines that the Executive would be eligible for 70% of the Target Bonus based on the Board’s assessment of individual and corporate performance during the year of termination, then the amount payable under this paragraph would be the amount determined by multiplying 75% (i.e., a pro ration reflecting ¾ of the year) by 70% of the Target Bonus for such year;

(3) provided that the Executive properly elects and maintains continued health insurance coverage under the Company sponsored plan and provided further that such benefits continue to be offered under the Company sponsored plan, the Company shall

reimburse the Executive in an amount equal to the cost of the premium for such continued health insurance coverage at the same average level and on the same terms and conditions which applied immediately prior to the date of the Executive’s termination for the shorter of (a) the Severance Period, or (b) until the Executive obtains reasonably comparable coverage; and

(4) each Equity Award held by Executive shall immediately vest and be exercisable to the extent such Equity Award would have vested had Executive remained employed by the Company during the Severance Period (or, if greater, to the extent such Equity Award would have vested during the 12 months following Executive’s date of termination had Executive remained employed during such period). The Company and the Executive hereby agree that the Equity Awards shall be deemed amended to the extent necessary to give effect to this provision.

Upon termination of this Agreement within three months prior to or 12 months following a Change in Control or Corporate Transaction: (A) by the Executive pursuant to paragraph 5(b)(i), or (B) by the Company pursuant to paragraph 5(c)(i) or upon notice of non-renewal of the Term given by the Company during such period, Executive shall be entitled to the following severance benefits, subject to execution of the Release:

(1) the Company shall pay the Executive an amount equal to 18 months (the “CIC Severance Period”) of Executive’s then-current Base Salary (less all applicable deductions) payable in a lump sum payment on the first regularly scheduled pay date of the Company processed after the Executive has executed and delivered to the Company the Release and any revocation period has expired;

(2) the Company shall pay the Executive an amount equal to one times the Executive’s Target Bonus amount (less all applicable deductions) payable in a lump sum payment on the first regularly scheduled pay date of the Company processed after Executive has executed and delivered to the Company the Release and any revocation period has expired;

(3) provided that the Executive properly elects and maintains continued health insurance coverage under the Company sponsored plan, the Company shall reimburse the Executive in an amount equal to 100% of the cost of the premium for such continued health insurance coverage at the same average level and on the same terms and conditions which applied immediately prior to the date of the Executive’s termination for the shorter of (a) the CIC Severance Period or (b) until the Executive obtains reasonably comparable coverage through an employer;

(4) each Equity Award held by Executive at the time of termination shall immediately vest and be exercisable until the final exercise date set forth in the Equity Award. The Company and the Executive hereby agree that the Equity Awards shall be deemed amended to the extent necessary to give effect to this provision; and

(e)

Resignation as Officer and Director. Upon termination of this Agreement and the Executive’s employment hereunder for any reason by either party, the Executive shall be deemed to have resigned from all offices and positions the Executive may hold with the Company

at such time including without limitation Board membership and/or positions as an officer of the Company.

(f)

Payment in Lieu of Notice Period. Upon the termination of this Agreement: (A) pursuant to the expiration of the Term based on a non-renewal notice given by either party in accordance with paragraph 3(b); or (B) by the Executive pursuant to paragraph 5(b)(i) or 5(b)(ii), the Company may, at its sole election, pay the Executive an amount equal to Executive’s then-current Base Salary for all or any portion of the applicable notice period required by paragraph 3(b) or paragraph 5(b)(i) or 5(b)(ii) in lieu of all or any portion of such notice period; provided, however, any such election by the Company shall not be deemed to be a termination by the Company that invokes the obligations set forth in Section 5(d)(ii) of this Agreement. Notwithstanding the above, if the Executive requests that the Executive’s final day of employment occur prior to the expiration of any applicable notice period and the Company consents, pay in lieu of notice shall not be required.

6. Parachute Payment upon Corporate Transaction.

(a) In the event of a Corporate Transaction which results in a change (i) in the ownership of effective control of the Company, or (ii) in the ownership of a substantial portion of the assets of the corporation (within the meaning of Section 280G of the Code and the regulations thereunder (“Section 280G”)) (a “280G Change in Control”) payments and benefits under this Agreement, together with other payments and benefits provided to Executive by the Company (including, without limitation, any accelerated vesting of stock options) (the “Total Payments”) shall be made in accordance with this Section 6(a). If all or a portion of the Total Payments would constitute an “excess parachute payment” within the meaning of Section 280G (the aggregate of such payments or portions thereof) being hereinafter referred to as the “Excess Parachute Payments”), then the Executive will be entitled to receive: (i) an amount limited so that no portion thereof shall fail to be tax deductible under Section 280G of the Code (the “Limited Amount”), or (ii) if the amount otherwise payable hereunder or otherwise (without regarding to clause (i)) reduced by all taxes applicable thereto (including, for the avoidance of doubt, the federal excise tax levied on certain Excess Parachute Payments under Section 4999 of the Code (the “Excise Tax”)) would be greater than the Limited Amount reduced by all taxes applicable thereto, the amount otherwise payable hereunder.

(b) The determination as to whether the Total Payments include Excess Parachute Payments and, if so, the amount of such Excess Parachute Payments, the amount of any Excise Tax with respect thereto, and the amount of any reduction in Total Payments shall be made at the Company’s expense by the independent public accounting firm most recently serving as the Company’s outside auditors or such other accounting or benefits consulting group or firm as the Company may designate (the “Accountants”). In the event that any payments under this Agreement or otherwise are required to be reduced as described in Section 6(a), the adjustment will be made, first, by reducing the amount of Base Salary and Target Bonus payable pursuant to Section 5(d)(iii)(1) and (2), as applicable; second, if additional reductions are necessary, by reducing the payment of health insurance premium due to Executive pursuant to Section 5(d)(iii)(3), as applicable; and third, if additional reductions are still necessary, by eliminating the accelerated vesting of time-based equity-based awards under Section 5(d)(iii)(4), if any, starting

with those awards for which the amount required to be taken into account under Section 280G is the greatest.

(c) In the event that there has been an underpayment or overpayment under this Agreement or otherwise as determined by the Accountants, the amount of such underpayment or overpayment shall forthwith be paid to Executive or refunded to the Company, as the case may be, with interest at the applicable federal rate provided for in Section 7872(f)(2) of the Code.

7. Proprietary Information Agreement. The terms of the Proprietary Information and Inventions Agreement by and between the Company and the Executive dated as of the Effective Date, (the “Proprietary Information Agreement”) and any other similar agreement regarding confidentiality, intellectual property rights, non-competition or non-solicitation between the Company and the Executive, are hereby incorporated by reference and are a material part of this Agreement. The duration of Executive’s covenants set forth in Section 3 (nonsolicitation) and Section 4 (covenant not to compete) of the Proprietary Information Agreement are hereby amended to apply for the CIC Severance Period following the end of employment in the event the Company makes the lump sum payment provided for under Section 5(d)(iii)(1).

8. Representations and Warranties.

(a) The Executive represents and warrants to the Company that the Executive’s performance of this Agreement and as an employee of the Company does not and will not breach any noncompetition agreement or any agreement to keep in confidence proprietary information acquired by the Executive in confidence or in trust prior to the Executive’s employment by the Company. The Executive represents and warrants to the Company that the Executive has not entered into, and agrees not to enter into, any agreement that conflicts with or violates this Agreement.

(b) The Executive represents and warrants to the Company that the Executive has not brought and shall not bring with the Executive to the Company, or use in the performance of the Executive's responsibilities for the Company, any materials or documents of a former employer which are not generally available to the public or which did not belong to the Executive prior to the Executive’s employment with the Company, unless the Executive has obtained written authorization from the former employer or other owner for their possession and use and provided the Company with a copy thereof.

9. Indemnification by the Executive. To the extent any of Executive’s actions or inactions result in damages to the Company which are not covered under the Company’s then existing indemnification provisions for officers, its Directors and Officers insurance policy (or similar insurance contract), or would be unlawful for the Company to indemnify, then the Executive shall indemnify and hold harmless the Company, its directors, officers, stockholders, agents, and employees against all claims, costs, expenses, liabilities, and lost profits, including amounts paid in settlement, incurred by any of them as a result of the material breach by the Executive of any provision of Section 2, 6 and/or 7 of this Agreement.

10. Notices. All notices, requests, consents, approvals, and other communications to, upon, and between the parties shall be in writing and shall be deemed to have been given, delivered,

made, and received when: (a) personally delivered; (b) deposited for next day delivery by Federal Express, or other similar overnight courier services; (c) transmitted via telefacsimile or other similar device to the attention of the Board of Directors of the Company with receipt acknowledged; or (d) three days after being sent or mailed by certified mail, postage prepaid and return receipt requested, addressed to the Company at 900 North Point Parkway, Suite 200, Alpharetta, GA 30005 and to the Executive at the Executive’s last listed address in the payroll records of the Company.

11. Effect. This Agreement shall be binding on and inure to the respective benefit of the Company and its successors and assigns and the Executive and Executive’s personal representatives.

12. Entire Agreement. This Agreement and the Proprietary Information Agreement and any other similar agreement regarding confidentiality, intellectual property rights, non-competition or non-solicitation constitute the entire agreement between the parties with respect to the matters set forth herein and supersede all prior agreements and understandings between the parties with respect to the same, including an employment offer letter dated March 6, 2024.

13. Severability. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision.

14. Amendment and Waiver. No provision of this Agreement, including the provisions of this Section, may be amended, modified, deleted, or waived in any manner except by a written agreement executed by the parties.

15. Section 409A Matters. This Agreement is intended to comply with the requirements of Section 409A of the Internal Revenue Code of 1986, as amended and the Treasury Regulations and other applicable guidance thereunder (“Section 409A”). To the extent that there is any ambiguity as to whether this Agreement (or any of its provisions) contravenes one or more requirements of Section 409A, such provision shall be interpreted and applied in a matter that does not result in a Section 409A violation. Without limiting the generality of the above:

(a) For clarity, the severance benefits specified in this Agreement (the “Severance Benefits”) are only payable upon a “separation from service” as defined in Section 409A. The Severance Benefits shall be deemed to be series of separate payments, with each installment being treated as a separate payment. The time and form of payment of any compensation may not be deferred or accelerated to the extent it would result in an impermissible acceleration or deferral under Section 409A.

(b) To the extent this Agreement contains payments which are subject to Section 409A (as opposed to exempt from Section 409A), the Executive’s rights to such payments are not subject to anticipation, alienation, sale, transfer, pledge, encumbrance, attachment or garnishment and, where applicable, may only be transferred by will or the laws of descent and distribution.

(c) To the extent the Severance Benefits are intended to be exempt from Section 409A as a result of an “involuntary separation from service” under Section 409A, if all conditions necessary to establish the Executive’s entitlement to such Severance Benefits have been satisfied, all Severance Benefits shall be paid or provided in full no later than December 31st of the second calendar year following the calendar year in which the Executive’s employment terminated unless another time period is applicable.

(d) If the Employee is a “specified employee” (as defined in Section 409A) on the termination date and a delayed payment is required by Section 409A to avoid a prohibited distribution under Section 409A, then no Severance Benefits that constitute “non-qualified deferred compensation” under Section 409A shall be paid until the earlier of (i) the first day of the 7th month following the date of the Executive’s “separation from service” as defined in Section 409A, or (ii) the date of the Executive’s death. Upon the expiration of the applicable deferral period, all payments deferred under this clause shall be paid in a lump sum and any remaining severance benefits shall be paid per the schedule specified in this Agreement.

(e) The Company makes no representation that this Agreement will be exempt from or compliant with Section 409A and makes no affirmative undertaking to preclude Section 409A from applying, but does reserve the right to unilaterally amend this Agreement as may be necessary or advisable to permit the Agreement to be in documentary and operational compliance with Section 409A which determination will be made in the sole discretion of the Company.

16. Governing Law. This Agreement will be governed by and construed according to the laws of the Georgia as such laws are applied to agreements entered into and to be performed entirely within Georgia between Georgia residents.

17. Consent to Jurisdiction and Venue. Each of the parties agrees that any suit, action, or proceeding arising out of this Agreement may be instituted against it in the state or federal courts located in Georgia. Each of the parties hereby waives any objection that it may have to the venue of any such suit, action, or proceeding, and each of the parties hereby irrevocably consents to the personal jurisdiction of any such court in any such suit, action, or proceeding.

18. Counterparts. This Agreement may be executed in more than one counterpart, each of which shall be deemed an original, and all of which shall be deemed a single agreement.

19. Headings. The headings herein are for convenience only and shall not affect the interpretation of this Agreement.

[The remainder of this page is intentionally left blank.]

IN WITNESS WHEREOF, the parties have executed this Agreement as of the day and year first above written.

COMPANY:

Clearside Biomedical, Inc.


By:		/s/ George Lasezkay
		George Lasezkay
		President and CEO

EXECUTIVE:


By:		/s/ Victor Chong
		Victor Chong

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, George Lasezkay, certify that:

I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2024 of Clearside Biomedical, Inc. (the “registrant”);

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 12, 2024


	/s/ George Lasezkay, Pharm.D., J.D.
	George Lasezkay, Pharm. D., J.D.
	President and Chief Executive Officer
	(principal executive officer)

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Charles A. Deignan, certify that:

I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2024 of Clearside Biomedical, Inc. (the “registrant”);

(a)

(b)

(c)

(d)

(a)

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 12, 2024


	/s/ Charles A. Deignan
	Charles A. Deignan
	Chief Financial Officer
	(principal financial officer)

Exhibit 32.1

CERTIFICATIONS OF

PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. §1350), George Lasezkay, President and Chief Executive Officer of Clearside Biomedical, Inc. (the “Company”), and Charles A. Deignan, Chief Financial Officer of the Company, each hereby certifies that, to the best of his knowledge:

The Company’s Quarterly Report on Form 10-Q for the period ended June 30, 2024, to which this Certification is attached as Exhibit 32.1 (the “Periodic Report”), fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act; and

The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

IN WITNESS WHEREOF, the undersigned have set their hands hereto as of the 12th day of August, 2024.


/s/ George Lasezkay, Pharm. D., J.D.		/s/ Charles. A. Deignan
George Lasezkay, Pharm. D., J.D.		Charles A. Deignan
President and Chief Executive Officer (principal executive officer)		Chief Financial Officer (principal financial officer)

* This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2024	Aug. 09, 2024
Cover [Abstract]
Entity Registrant Name	Clearside Biomedical, Inc.
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Trading Symbol	CLSD
Document Type	10-Q
Entity Central Index Key	0001539029
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Interactive Data Current	Yes
Document Transition Report	false
Title of 12(b) Security	Common Stock, par value $0.001 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Entity Common Stock, Shares Outstanding		74,745,572
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity File Number	001-37783
Entity Tax Identification Number	45-2437375
Entity Address, Address Line One	900 North Point Parkway
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Alpharetta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30005
City Area Code	678
Local Phone Number	270-3631

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 18,238	$ 28,920
Short-term investments	11,122	0
Accounts receivable	0	170
Prepaid expenses	364	722
Other current assets	44	311
Total current assets	29,768	30,123
Property and equipment, net	3,400	2,996
Operating lease right-of-use asset	736	869
Other assets	30	30
Total assets	33,934	34,018
Current liabilities:
Accounts payable (includes $40 and $331 to a related party as of June 30, 2024 and December 31, 2023, respectively)	1,576	2,205
Accrued liabilities (includes $416 and $215 to a related party as of June 30, 2024 and December 31, 2023, respectively)	3,703	4,169
Current portion of operating lease liabilities	370	364
Deferred revenue	225	75
Total current liabilities	5,874	6,813
Liability related to the sales of future royalties, net	46,731	41,988
Warrant liabilities	9,121	0
Operating lease liabilities	493	649
Other non-current liabilities	0	480
Total liabilities	62,219	49,930
Commitments and contingencies
Stockholders' (deficit) equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized and no shares issued at June 30, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value; 200,000,000 shares authorized at June 30, 2024 and December 31, 2023; 74,731,139 and 62,850,841 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	74	63
Additional paid-in capital	311,922	304,948
Accumulated deficit	(340,280)	(320,923)
Accumulated other comprehensive loss	(1)	0
Total stockholders deficit	(28,285)	(15,912)
Total liabilities and stockholders (deficit) equity	$ 33,934	$ 34,018

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accounts payable	$ 40	$ 331
Accrued liabilities	$ 416	$ 215
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares, issued	74,731,139	62,850,841
Common stock, shares outstanding	74,731,139	62,850,841

Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
License and other revenue (includes $81 and $156 from a related party for the three and six months ended June 30, 2024, respectively)	$ 90	$ 1,018	$ 320	$ 1,022
Type of Revenue [Extensible List]	us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember
Operating expenses:
Cost of goods sold	$ 0	$ 213	$ 0	$ 213
Research and development (includes $243 and $503 to a related party for the three and six months ended June 30, 2024, respectively)	4,603	4,948	10,218	9,399
General and administrative	3,077	3,127	5,901	6,285
Total operating expenses	7,680	8,288	16,119	15,897
Loss from operations	(7,590)	(7,270)	(15,799)	(14,875)
Interest income	419	458	767	950
Other income, net	1,917	0	418	0
Non-cash interest expense on liability related to the sales of future royalties	(2,340)	(2,294)	(4,743)	(4,461)
Net loss	$ (7,594)	$ (9,106)	$ (19,357)	$ (18,386)
Net loss per share of common stock - basic	$ (0.1)	$ (0.15)	$ (0.27)	$ (0.3)
Net loss per share of common stock - diluted	$ (0.1)	$ (0.15)	$ (0.27)	$ (0.3)
Weighted average shares outstanding - basic	74,731,139	61,654,520	72,292,183	61,413,343
Weighted average shares outstanding - diluted	74,731,139	61,654,520	72,292,183	61,413,343
Net Income (Loss)	$ (7,594)	$ (9,106)	$ (19,357)	$ (18,386)
Unrealized loss on available-for-sale investments	(1)	0	(1)	0
Comprehensive loss	$ (7,595)	$ (9,106)	$ (19,358)	$ (18,386)

Consolidated Statements of Operations (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024
Income Statement [Abstract]
License and other revenue from Related Party	$ 81	$ 156
Research and development to Related Party	$ 243	$ 503

Consolidated Statements of Stockholders (Deficit) Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In-Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss Income
Beginning balance at Dec. 31, 2022	$ 10,607	$ 61	$ 298,984	$ (288,438)
Beginning balance, shares at Dec. 31, 2022		60,639,827
Issuance of common stock under at-the-market sales agreement	295		295
Issuance of common stock under at-the-market sales agreement, shares		214,128
Vesting and settlement of restricted stock units, shares		471,390
Issuance of common shares under employee stock purchase plan	37		37
Issuance of common shares under employee stock purchase plan, shares		38,954
Share-based compensation expense	1,041		1,041
Net Income (Loss)	(9,280)			(9,280)
Ending balance at Mar. 31, 2023	2,700	$ 61	300,357	(297,718)
Ending balance, shares at Mar. 31, 2023		61,364,299
Beginning balance at Dec. 31, 2022	10,607	$ 61	298,984	(288,438)
Beginning balance, shares at Dec. 31, 2022		60,639,827
Net Income (Loss)	(18,386)
Ending balance at Jun. 30, 2023	(4,973)	$ 62	301,789	(306,824)
Ending balance, shares at Jun. 30, 2023		61,717,445
Beginning balance at Mar. 31, 2023	2,700	$ 61	300,357	(297,718)
Beginning balance, shares at Mar. 31, 2023		61,364,299
Issuance of common stock under at-the-market sales agreement	362	$ 1	361
Issuance of common stock under at-the-market sales agreement, shares		328,147
Exercise of stock options	10		10
Exercise of stock options, shares		24,999
Share-based compensation expense	1,061		1,061
Net Income (Loss)	(9,106)			(9,106)
Ending balance at Jun. 30, 2023	(4,973)	$ 62	301,789	(306,824)
Ending balance, shares at Jun. 30, 2023		61,717,445
Beginning balance at Dec. 31, 2023	(15,912)	$ 63	304,948	(320,923)
Beginning balance, shares at Dec. 31, 2023		62,850,841
Issuance of common stock under registered direct offering	4,320	$ 11	4,309
Issuance of common stock under registered direct offering, shares		11,111,111
Issuance of common stock under at-the-market sales agreement	450		450
Issuance of common stock under at-the-market sales agreement, shares		339,912
Exercise of stock options	12		12
Exercise of stock options, shares		10,000
Vesting and settlement of restricted stock units, shares		397,594
Issuance of common shares under employee stock purchase plan	21		21
Issuance of common shares under employee stock purchase plan, shares		21,681
Share-based compensation expense	1,062		1,062
Net Income (Loss)	(11,763)			(11,763)
Ending balance at Mar. 31, 2024	(21,810)	$ 74	310,802	(332,686)
Ending balance, shares at Mar. 31, 2024		74,731,139
Beginning balance at Dec. 31, 2023	(15,912)	$ 63	304,948	(320,923)
Beginning balance, shares at Dec. 31, 2023		62,850,841
Net Income (Loss)	(19,357)
Ending balance at Jun. 30, 2024	(28,285)	$ 74	311,922	(340,280)	$ (1)
Ending balance, shares at Jun. 30, 2024		74,731,139
Beginning balance at Mar. 31, 2024	(21,810)	$ 74	310,802	(332,686)
Beginning balance, shares at Mar. 31, 2024		74,731,139
Share-based compensation expense	1,120		1,120
Net Income (Loss)	(7,594)			(7,594)
Other comprehensive loss	(1)				(1)
Ending balance at Jun. 30, 2024	$ (28,285)	$ 74	$ 311,922	$ (340,280)	$ (1)
Ending balance, shares at Jun. 30, 2024		74,731,139

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net loss	$ (19,357)	$ (18,386)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense on liability related to the sales of future royalties, net of issuance costs accretion	4,743	4,461
Depreciation	72	31
Share-based compensation expense	2,182	2,102
Change in fair value of warrant liabilities	(1,206)	0
Issuance costs allocated to warrant liabilities	787	0
Amortization and accretion of available-for-sale investments, net	(109)	0
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	795	(119)
Other assets and liabilities	(497)	(9)
Accounts payable and accrued liabilities (includes $254 to a related party for the six months ended June 30, 2024)	(1,091)	(785)
Deferred revenue	150	150
Net cash used in operating activities	(13,531)	(12,555)
Investing activities
Acquisition of property and equipment	(480)	(1,212)
Purchase of short-term investments	(11,014)	0
Net cash used in investing activities	(11,494)	(1,212)
Financing activities
Proceeds from issuance of comon stock and warrants under registered direct offering, net of issuance costs	13,860	0
Proceeds from at-the-market sales agreement, net of issuance costs	450	657
Payments to royalty purchase and sale agreement	0	(350)
Proceeds from exercise of stock options	12	10
Proceeds from shares issued under employee stock purchase plan	21	37
Net cash provided by financing activities	14,343	354
Net decrease in cash and cash equivalents	(10,682)	(13,413)
Cash and cash equivalents, beginning of period	28,920	48,418
Cash and cash equivalent, end of period	18,238	35,005
Supplemental disclosure
Purchase of property and equipment included in accrued liabilities	$ 4	$ 116

Consolidated Statements of Cash Flows (unaudited) (Parenthetical) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Accounts payable and accrued liabilities (includes $254 to a related party for the six months ended June 30, 2024)	$ 254

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (7,594)	$ (11,763)	$ (9,106)	$ (9,280)	$ (19,357)	$ (18,386)

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Rule 10b5-1 Arrangement Modified	false
Non-Rule 10b5-1 Arrangement Modified	false

The Company

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The Company

1. The Company

Liquidity

The Company had cash, cash equivalents and short-term investments of $29.4 million as of June 30, 2024.

Significant Accounting Policies	6 Months Ended
Significant Accounting Policies	Jun. 30, 2024
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Basis of Presentation and Principles of Consolidation The Company's consolidated financial statements include the results of the financial operations of Clearside Biomedical, Inc. and its wholly-owned subsidiary, Clearside Royalty, LLC. a Delaware limited liability company, which was formed for the purposes of the transactions contemplated by the Purchase and Sale Agreement described in Note 5. All intercompany balances and transactions have been eliminated. The Company’s consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). In the opinion of management, the Company has made all necessary adjustments, which include normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial position and results of operations for the interim periods presented. The results for the three and six months ended June 30, 2024 are not indicative of results to be expected for the full year ending December 31, 2024, any other interim periods or any future year or period. These unaudited financial statements should be read in conjunction with the audited consolidated financial statements and related footnotes, which are included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 12, 2024. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of income and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the estimate of the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, the fair value of common stock warrants, revenue recognition, the accounting for useful lives to calculate depreciation and amortization, clinical trial expense accruals, share-based compensation expense and income tax valuation allowance. Actual results could differ from these estimates. Revenue Recognition The Company recognizes revenue from its contracts with customers under Financial Accounting Standards Board Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers. The Company’s primary revenue arrangements are license agreements, which typically include upfront payments, regulatory and commercial milestone payments and royalties based on future product sales. The arrangements may also include payments for the Company’s SCS Microinjector devices as well as payments for assistance and oversight of the customer’s use of the Company’s technology. In determining the amount of revenue to be recognized under these agreements, the Company performs the following steps: (i) identifies the promised goods and services to be transferred in the contract, (ii) identifies the performance obligations, (iii) determines the transaction price, (iv) allocates the transaction price to the performance obligations and (v) recognizes revenue as the performance obligations are satisfied. The Company receives payments from its customers based on billing schedules established in each contract. Upfront and other payments may require deferral of revenue recognition to a future period until the Company performs its obligations under the arrangement. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional. The Company does not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the customer and the transfer of the promised goods or services to the customer will be one year or less. Research and Development Costs Research and development costs are charged to expense as incurred and include: • employee-related expenses, including salaries, benefits, travel and share-based compensation expense for research and development personnel; • expenses incurred under agreements with contract research organizations, contract manufacturing organizations and consultants that conduct preclinical studies and clinical trials; • costs associated with preclinical and clinical development activities; • costs associated with submitting regulatory approval applications for the Company’s product candidates; • costs associated with training physicians on the suprachoroidal injection procedure and educating and providing them with appropriate product candidate information; • costs associated with technology and intellectual property licenses; • costs for the Company’s research and development facility; and • depreciation expense for assets used in research and development activities. Costs for certain development activities, such as clinical trial activities, are recognized based on an evaluation of the estimated total costs for the clinical trial, progress to completion of specific tasks using data such as patient enrollment, pass-through expenses, clinical site activations, data from the clinical sites or information provided to the Company by its vendors on their actual costs incurred. Payments for these activities are based on the terms of the individual contracts and any subsequent amendments, which may differ from the patterns of costs incurred, and are reflected in the consolidated financial statements as prepaid expenses or accrued liabilities. Share-Based Compensation Compensation cost related to share-based awards granted to employees, directors and consultants is measured based on the estimated fair value of the award at the grant date. The Company estimates the fair value of stock options using a Black-Scholes option pricing model. The fair value of restricted stock units granted is measured based on the market value of the Company’s common stock on the date of grant. Share-based compensation costs are expensed on a straight-line basis over the relevant vesting period. Compensation cost related to shares purchased through the Company’s employee stock purchase plan, which is considered compensatory, is based on the estimated fair value of the shares on the offering date, including consideration of the discount and the look-back period. The Company estimates the fair value of the shares using a Black-Scholes option pricing model. Compensation expense is recognized over the six-month withholding period prior to the purchase date. All share-based compensation costs are recorded in general and administrative or research and development costs in the consolidated statements of operations and comprehensive loss based upon the recipient's underlying role within the Company. Cash Equivalents Cash equivalents consist of short-term, highly liquid investments with an original term of three months or less at the date of purchase. Short-term Investments Short-term investments are investments with original maturities of between 90 and 365 days when purchased and are comprised of treasury bills. The Company classifies its short-term investments as available-for-sale securities. Short-term investments are recorded at fair value and unrealized gains and losses are recorded within accumulated other comprehensive income (loss). Accretion on the discount associated with these investments is recorded in interest income. In addition, the Company evaluates the short-term investments with unrealized losses to determine whether such losses are other than temporary. Concentration of Credit Risk Arising From Cash Deposits in Excess of Insured Limits The Company maintains its cash in bank deposits that at times may exceed federally insured limits. The Company has not experienced any loss in such accounts. The Company believes it is not exposed to any significant risks with respect to its cash balances. Liability Related to the Sales of Future Royalties and Non-Cash Interest Expense In connection with the Purchase and Sale Agreement, the Company recognizes a liability related to the sales of future royalties under ASC 470-10, Debt and ASC 835-30, Interest - Imputation of Interest. The initial funds received by the Company pursuant to the terms of the Purchase and Sale Agreement were recorded as a liability and are accreted under the effective interest method up to the estimated amount of future royalties and milestone payments to be made under the Purchase and Sale Agreement. The issuance costs were recorded as a direct deduction to the carrying amount of the liability and are amortized under the effective interest method over the estimated period the liability will be repaid. The Company estimates the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, and a significant increase or decrease in these estimates could materially impact the liability balance and the related interest expense. If the timing of the receipt of royalty payments or milestones is materially different from the original estimates, the Company will prospectively adjust the effective interest and the related amortization of the liability and related issuance costs. Warrant Liabilities The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in FASB ASC Topic 480, Distinguishing Liabilities from Equity (ASC 480) and ASC Topic 815, Derivatives and Hedging (ASC 815). The assessment considers whether the warrants (i) are freestanding financial instruments pursuant to ASC 480, (ii) meet the definition of a liability pursuant to ASC 480, and (iii) meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company's own stock and whether the warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding. For warrants that meet all criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital, on the consolidated statement of stockholders’ deficit at the time of issuance. For warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance and on each consolidated balance sheet date thereafter. The Company’s warrant liabilities are measured at fair value using a simulation model which takes into account, as of the valuation date, factors including the current exercise price, the expected life of the warrant, the current price of the Company's common stock, the expected volatility, holding cost, the risk-free interest rate for the term of the warrant and the likelihood of achieving certain future milestone events and the related impact to the price of the Company's common stock. The warrant liabilities are revalued at each reporting period and changes in fair value are recognized in other income (expense) in the consolidated statements of operations and comprehensive loss. The selection of the appropriate valuation model and the inputs and assumptions that are required to determine the valuation requires significant judgment and requires management to make estimates and assumptions that affect the reported amount of the related liability and reported amounts of the change in fair value. Actual results could differ from those estimates, and changes in these estimates are recorded when known. Recently Issued Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU looks to enhance the transparency and decision usefulness of income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The main provisions to the rate reconciliation disclosure require public entities to disclose, on an annual basis, specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. The main provisions to the income taxes paid disclosure require that all entities disclose on an annual basis: the amount of income taxes paid disaggregated by federal, state and foreign taxes and the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid meets a quantitative threshold. This ASU also requires all entities to disclose income (loss) from continuing operations before income tax expense (benefit) disaggregated between domestic and foreign and income tax expense (benefit) from continuing operations disaggregated by federal, state and foreign. This ASU is to be applied on a prospective basis with an effective date for all public entities for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this ASU.

Property and Equipment, Net

6 Months Ended

Jun. 30, 2024

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

3. Property and Equipment, Net

Property and equipment, net consisted of the following (dollar amounts in thousands):


	Estimated Useful Lives (Years)	June 30, 2024			December 31, 2023
Furniture and fixtures	5	$	249		$	249
Machinery and equipment	5		1,441			581
Computer equipment	3		20			20
Leasehold improvements	Lesser of useful life or remaining lease term		476			476
Work in process			2,206			2,590
Total property and equipment			4,392			3,916
Less: Accumulated depreciation			(992	)		(920	)
Property and equipment, net		$	3,400		$	2,996

Accrued Liabilities

6 Months Ended

Jun. 30, 2024

Payables and Accruals [Abstract]

Accrued Liabilities

4. Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	June 30,		December 31,
	2024		2023
Accrued research and development	$	2,270	$	2,078
Accrued employee costs		1,036		1,862
Accrued professional fees		34		38
Accrued expense		363		191
	$	3,703	$	4,169

Royalty Purchase and Sale Agreement

6 Months Ended

Jun. 30, 2024

Royalty Purchase and Sales Agreement [Abstract]

Royalty Purchase and Sale Agreement

5. Royalty Purchase and Sale Agreement

The following table summarizes the activity of the Purchase and Sale Agreement for the six months ended June 30, 2024 (in thousands):


Royalty Purchase and Sale Agreement balance at December 31, 2023	$	41,988
Non-cash interest expense		4,743
Balance at June 30, 2024	$	46,731

Effective interest rate		22.0	%

Common Stock

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Common Stock

6. Common Stock

Common Stock Warrants

6 Months Ended

Jun. 30, 2024

Stock Purchase Warrants [Abstract]

Common Stock Warrants

7. Common Stock Warrants

On February 6, 2024, the Company entered into a securities purchase agreement with institutional investors and an existing stockholder, pursuant to which the Company issued and sold, in a registered direct offering (i) an aggregate of 11,111,111 shares of its common stock; and (ii) Warrants to purchase up to 11,111,111 shares of common stock. The combined purchase price of each share and accompanying Warrant was $1.35. The exercise price for the Warrants is $1.62 per share. The Warrants will be exercisable beginning August 9, 2024 and will expire on August 9, 2029. The Company recorded the initial fair value of the Warrants of $10.3

The following table summarizes the change in fair value of the warrant liabilities during the six months ended June 30, 2024 (in thousands):


Fair value of warrants at issuance February 9, 2024	$	10,327
Change in fair value during the period		(1,206	)
Fair value of warrants at June 30, 2024	$	9,121

The following table summarizes certain key inputs for the valuation of the Warrants at June 30, 2024:


Common stock price	$	1.30
Exercise price per share	$	1.62
Expected volatility		65.30	%
Risk-free interest rate		4.24	%
Contractual term (in years)		5.11
Expected dividend yield		—	%

Share-Based Compensation

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement [Abstract]

Share-Based Compensation

8. Share-Based Compensation

Share-based compensation is accounted for in accordance with the provisions of ASC 718, Compensation-Stock Compensation.

Stock Options

Share-based compensation expense for options granted under the 2016 Plan is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	384	$	295	$	804	$	606
General and administrative		480		437		862		833
Total	$	864	$	732	$	1,666	$	1,439

The following table summarizes the activity related to stock options granted under the 2011 Plan and the 2016 Plan during the six months ended June 30, 2024:


				Weighted
	Number of			Average
	Shares			Exercise Price
Options outstanding at December 31, 2023		9,865,770		$	2.83
Granted		3,034,375			1.32
Exercised		(10,000	)		1.24
Forfeited		(122,815	)		2.83
Options outstanding at June 30, 2024		12,767,330			2.47

Options exercisable at December 31, 2023		5,494,746			3.83

Options exercisable at June 30, 2024		6,691,528			3.45

Restricted Stock Units

The total share-based compensation expense related to RSUs is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	118	$	163	$	237	$	332
General and administrative		135		163		273		324
Total	$	253	$	326	$	510	$	656

The following table summarizes the activity related to RSUs during the six months ended June 30, 2024:


				Weighted Average
	Number of			Grant Date
	Shares			Fair Value
Non-vested RSUs outstanding at December 31, 2023		834,899		$	3.01
Vested		(397,594	)		3.07
Non-vested RSUs outstanding at June 30, 2024		437,305			2.96

As of June 30, 2024, the Company had $0.8 million of unrecognized compensation expense related to the RSUs which is expected to be recognized over a weighted average period of 1.1 years.

Employee Stock Purchase Plan

The share-based compensation expense recognized for the 2016 ESPP is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	2	$	2	$	5	$	5
General and administrative		1		1		1		2
Total	$	3	$	3	$	6	$	7

During the six months ended June 30, 2024, the Company issued 21,681 shares of common stock purchased under the 2016 ESPP.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

9. Commitments and Contingencies

Lease Commitment Summary

included in the calculation of the right-of-use asset and the lease liabilities as the Company has not yet determined if the Alpharetta, Georgia lease will be renewed.

Georgia Tech License Agreement


Year Ending December 31,	Amount
2024	$	250
2025		250
2026		350
2027		400
2028		500
Total	$	1,750

Contract Service Providers

License and Other Agreements

6 Months Ended

Jun. 30, 2024

License And Other Agreement [Abstract]

License and Other Agreements

10. License and Other Agreements

Bausch + Lomb

Arctic Vision (Hong Kong) Limited

BioCryst Pharmaceuticals, Inc.

Other

Available-for-Sale Investments

6 Months Ended

Jun. 30, 2024

Available-for-Sale Investments Abstract

Available-for-Sale Investments

11. Available-for-Sale Investments

The following table summarizes the fair value of the Company's short-term investments by type (in thousands):


	June 30, 2024
	Amortized		Unrealized			Fair
	Cost		Losses			Value
Treasury bills	$	11,123	$	(1	)	$	11,122
Total available-for-sale investments	$	11,123	$	(1	)	$	11,122

Fair Value Measurements

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

12. Fair Value Measurements

There were no transfers between Levels 1, 2 and 3 during the six months ended June 30, 2024 and the year ended December 31, 2023.

The following table summarizes the assets and liabilities that are measured at fair value and the classification by level of input within the fair value hierarchy (in thousands):


	June 30, 2024
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	18,238	$	—	$	—	$	18,238
Short-term investments		11,122		—		—		11,122
Total assets	$	29,360	$	—	$	—	$	29,360

Liabilities:
Warrant liabilities	$	—	$	—	$	9,121	$	9,121
Total liabilities	$	—	$	—	$	9,121	$	9,121


	December 31, 2023
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	28,920	$	—	$	—	$	28,920
Total assets	$	28,920	$	—	$	—	$	28,920

Related Party Transactions

6 Months Ended

Jun. 30, 2024

Related Party Transactions

13. Related Party Transactions

Net Loss per Share

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Net Loss Per Share

14. Net Loss Per Share


	Six Months Ended June 30,
	2024		2023
Outstanding stock options		12,767,330		9,105,534
Non-vested restricted stock units		437,305		895,666
Common stock warrants		11,140,907		29,796
		24,345,542		10,030,996

Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The Company's consolidated financial statements include the results of the financial operations of Clearside Biomedical, Inc. and its wholly-owned subsidiary, Clearside Royalty, LLC. a Delaware limited liability company, which was formed for the purposes of the transactions contemplated by the Purchase and Sale Agreement described in Note 5. All intercompany balances and transactions have been eliminated. The Company’s consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). In the opinion of management, the Company has made all necessary adjustments, which include normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial position and results of operations for the interim periods presented. The results for the three and six months ended June 30, 2024 are not indicative of results to be expected for the full year ending December 31, 2024, any other interim periods or any future year or period. These unaudited financial statements should be read in conjunction with the audited consolidated financial statements and related footnotes, which are included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 12, 2024.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of income and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the estimate of the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, the fair value of common stock warrants, revenue recognition, the accounting for useful lives to calculate depreciation and amortization, clinical trial expense accruals, share-based compensation expense and income tax valuation allowance. Actual results could differ from these estimates.
Revenue Recognition	Revenue Recognition The Company recognizes revenue from its contracts with customers under Financial Accounting Standards Board Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers. The Company’s primary revenue arrangements are license agreements, which typically include upfront payments, regulatory and commercial milestone payments and royalties based on future product sales. The arrangements may also include payments for the Company’s SCS Microinjector devices as well as payments for assistance and oversight of the customer’s use of the Company’s technology. In determining the amount of revenue to be recognized under these agreements, the Company performs the following steps: (i) identifies the promised goods and services to be transferred in the contract, (ii) identifies the performance obligations, (iii) determines the transaction price, (iv) allocates the transaction price to the performance obligations and (v) recognizes revenue as the performance obligations are satisfied. The Company receives payments from its customers based on billing schedules established in each contract. Upfront and other payments may require deferral of revenue recognition to a future period until the Company performs its obligations under the arrangement. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional. The Company does not assess whether a contract has a significant financing component if the expectation at contract inception is such that the period between payment by the customer and the transfer of the promised goods or services to the customer will be one year or less.
Research and Development Costs	Research and Development Costs Research and development costs are charged to expense as incurred and include: • employee-related expenses, including salaries, benefits, travel and share-based compensation expense for research and development personnel; • expenses incurred under agreements with contract research organizations, contract manufacturing organizations and consultants that conduct preclinical studies and clinical trials; • costs associated with preclinical and clinical development activities; • costs associated with submitting regulatory approval applications for the Company’s product candidates; • costs associated with training physicians on the suprachoroidal injection procedure and educating and providing them with appropriate product candidate information; • costs associated with technology and intellectual property licenses; • costs for the Company’s research and development facility; and • depreciation expense for assets used in research and development activities. Costs for certain development activities, such as clinical trial activities, are recognized based on an evaluation of the estimated total costs for the clinical trial, progress to completion of specific tasks using data such as patient enrollment, pass-through expenses, clinical site activations, data from the clinical sites or information provided to the Company by its vendors on their actual costs incurred. Payments for these activities are based on the terms of the individual contracts and any subsequent amendments, which may differ from the patterns of costs incurred, and are reflected in the consolidated financial statements as prepaid expenses or accrued liabilities.
Share-Based Compensation	Share-Based Compensation Compensation cost related to share-based awards granted to employees, directors and consultants is measured based on the estimated fair value of the award at the grant date. The Company estimates the fair value of stock options using a Black-Scholes option pricing model. The fair value of restricted stock units granted is measured based on the market value of the Company’s common stock on the date of grant. Share-based compensation costs are expensed on a straight-line basis over the relevant vesting period. Compensation cost related to shares purchased through the Company’s employee stock purchase plan, which is considered compensatory, is based on the estimated fair value of the shares on the offering date, including consideration of the discount and the look-back period. The Company estimates the fair value of the shares using a Black-Scholes option pricing model. Compensation expense is recognized over the six-month withholding period prior to the purchase date. All share-based compensation costs are recorded in general and administrative or research and development costs in the consolidated statements of operations and comprehensive loss based upon the recipient's underlying role within the Company.
Cash Equivalents	Cash Equivalents Cash equivalents consist of short-term, highly liquid investments with an original term of three months or less at the date of purchase. Short-term Investments Short-term investments are investments with original maturities of between 90 and 365 days when purchased and are comprised of treasury bills. The Company classifies its short-term investments as available-for-sale securities. Short-term investments are recorded at fair value and unrealized gains and losses are recorded within accumulated other comprehensive income (loss). Accretion on the discount associated with these investments is recorded in interest income. In addition, the Company evaluates the short-term investments with unrealized losses to determine whether such losses are other than temporary.
Short-term Investments	Short-term Investments Short-term investments are investments with original maturities of between 90 and 365 days when purchased and are comprised of treasury bills. The Company classifies its short-term investments as available-for-sale securities. Short-term investments are recorded at fair value and unrealized gains and losses are recorded within accumulated other comprehensive income (loss). Accretion on the discount associated with these investments is recorded in interest income. In addition, the Company evaluates the short-term investments with unrealized losses to determine whether such losses are other than temporary.
Concentration of Credit Risk Arising From Cash Deposits in Excess of Insured Limits	Concentration of Credit Risk Arising From Cash Deposits in Excess of Insured Limits The Company maintains its cash in bank deposits that at times may exceed federally insured limits. The Company has not experienced any loss in such accounts. The Company believes it is not exposed to any significant risks with respect to its cash balances.
Liability Related to the Sales of Future Royalties and Non-Cash Interest Expense	Liability Related to the Sales of Future Royalties and Non-Cash Interest Expense In connection with the Purchase and Sale Agreement, the Company recognizes a liability related to the sales of future royalties under ASC 470-10, Debt and ASC 835-30, Interest - Imputation of Interest. The initial funds received by the Company pursuant to the terms of the Purchase and Sale Agreement were recorded as a liability and are accreted under the effective interest method up to the estimated amount of future royalties and milestone payments to be made under the Purchase and Sale Agreement. The issuance costs were recorded as a direct deduction to the carrying amount of the liability and are amortized under the effective interest method over the estimated period the liability will be repaid. The Company estimates the total amount of future royalty revenue and milestone payments to be generated over the life of the Purchase and Sale Agreement, and a significant increase or decrease in these estimates could materially impact the liability balance and the related interest expense. If the timing of the receipt of royalty payments or milestones is materially different from the original estimates, the Company will prospectively adjust the effective interest and the related amortization of the liability and related issuance costs.
Warrant Liabilities	Warrant Liabilities The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in FASB ASC Topic 480, Distinguishing Liabilities from Equity (ASC 480) and ASC Topic 815, Derivatives and Hedging (ASC 815). The assessment considers whether the warrants (i) are freestanding financial instruments pursuant to ASC 480, (ii) meet the definition of a liability pursuant to ASC 480, and (iii) meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company's own stock and whether the warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding. For warrants that meet all criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital, on the consolidated statement of stockholders’ deficit at the time of issuance. For warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance and on each consolidated balance sheet date thereafter. The Company’s warrant liabilities are measured at fair value using a simulation model which takes into account, as of the valuation date, factors including the current exercise price, the expected life of the warrant, the current price of the Company's common stock, the expected volatility, holding cost, the risk-free interest rate for the term of the warrant and the likelihood of achieving certain future milestone events and the related impact to the price of the Company's common stock. The warrant liabilities are revalued at each reporting period and changes in fair value are recognized in other income (expense) in the consolidated statements of operations and comprehensive loss. The selection of the appropriate valuation model and the inputs and assumptions that are required to determine the valuation requires significant judgment and requires management to make estimates and assumptions that affect the reported amount of the related liability and reported amounts of the change in fair value. Actual results could differ from those estimates, and changes in these estimates are recorded when known.
Recently Issued Accounting Pronouncements Not Yet Adopted	Recently Issued Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU looks to enhance the transparency and decision usefulness of income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The main provisions to the rate reconciliation disclosure require public entities to disclose, on an annual basis, specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. The main provisions to the income taxes paid disclosure require that all entities disclose on an annual basis: the amount of income taxes paid disaggregated by federal, state and foreign taxes and the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid meets a quantitative threshold. This ASU also requires all entities to disclose income (loss) from continuing operations before income tax expense (benefit) disaggregated between domestic and foreign and income tax expense (benefit) from continuing operations disaggregated by federal, state and foreign. This ASU is to be applied on a prospective basis with an effective date for all public entities for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this ASU.

Property and Equipment, Net (Tables)

6 Months Ended

Jun. 30, 2024

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following (dollar amounts in thousands):


	Estimated Useful Lives (Years)	June 30, 2024			December 31, 2023
Furniture and fixtures	5	$	249		$	249
Machinery and equipment	5		1,441			581
Computer equipment	3		20			20
Leasehold improvements	Lesser of useful life or remaining lease term		476			476
Work in process			2,206			2,590
Total property and equipment			4,392			3,916
Less: Accumulated depreciation			(992	)		(920	)
Property and equipment, net		$	3,400		$	2,996

Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2024

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	June 30,		December 31,
	2024		2023
Accrued research and development	$	2,270	$	2,078
Accrued employee costs		1,036		1,862
Accrued professional fees		34		38
Accrued expense		363		191
	$	3,703	$	4,169

Royalty Purchase and Sale Agreement (Tables)

6 Months Ended

Jun. 30, 2024

Royalty Purchase and Sales Agreement [Abstract]

Schedule of Activity of Royalty Obligation

The following table summarizes the activity of the Purchase and Sale Agreement for the six months ended June 30, 2024 (in thousands):


Royalty Purchase and Sale Agreement balance at December 31, 2023	$	41,988
Non-cash interest expense		4,743
Balance at June 30, 2024	$	46,731

Effective interest rate		22.0	%

Common Stock Warrants (Tables)

6 Months Ended

Jun. 30, 2024

Stock Purchase Warrants [Abstract]

Schedule of Change in Fair Value of Warrant Liabilities

The following table summarizes the change in fair value of the warrant liabilities during the six months ended June 30, 2024 (in thousands):


Fair value of warrants at issuance February 9, 2024	$	10,327
Change in fair value during the period		(1,206	)
Fair value of warrants at June 30, 2024	$	9,121

Schedule of Valuation of the Warrants

The following table summarizes certain key inputs for the valuation of the Warrants at June 30, 2024:


Common stock price	$	1.30
Exercise price per share	$	1.62
Expected volatility		65.30	%
Risk-free interest rate		4.24	%
Contractual term (in years)		5.11
Expected dividend yield		—	%

Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Summary of Share-based Compensation Expense

Share-based compensation expense for options granted under the 2016 Plan is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	384	$	295	$	804	$	606
General and administrative		480		437		862		833
Total	$	864	$	732	$	1,666	$	1,439

Summary of Activity Related to Stock Options

The following table summarizes the activity related to stock options granted under the 2011 Plan and the 2016 Plan during the six months ended June 30, 2024:


				Weighted
	Number of			Average
	Shares			Exercise Price
Options outstanding at December 31, 2023		9,865,770		$	2.83
Granted		3,034,375			1.32
Exercised		(10,000	)		1.24
Forfeited		(122,815	)		2.83
Options outstanding at June 30, 2024		12,767,330			2.47

Options exercisable at December 31, 2023		5,494,746			3.83

Options exercisable at June 30, 2024		6,691,528			3.45

Restricted Stock Units (RSUs)

Summary of Share-based Compensation Expense

The total share-based compensation expense related to RSUs is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	118	$	163	$	237	$	332
General and administrative		135		163		273		324
Total	$	253	$	326	$	510	$	656

Summary of the Activity Related to RSUs

The following table summarizes the activity related to RSUs during the six months ended June 30, 2024:


				Weighted Average
	Number of			Grant Date
	Shares			Fair Value
Non-vested RSUs outstanding at December 31, 2023		834,899		$	3.01
Vested		(397,594	)		3.07
Non-vested RSUs outstanding at June 30, 2024		437,305			2.96

2016 Employee Stock Purchase Plan

Summary of Share-based Compensation Expense

The share-based compensation expense recognized for the 2016 ESPP is reflected in the consolidated statements of operations and comprehensive loss as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Research and development	$	2	$	2	$	5	$	5
General and administrative		1		1		1		2
Total	$	3	$	3	$	6	$	7

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of Annual Maintenance Fee Payments

The remaining annual Maintenance Fee payments are due on October 1st of each year from 2024 through 2028, as show in the table below (in thousands).


Year Ending December 31,	Amount
2024	$	250
2025		250
2026		350
2027		400
2028		500
Total	$	1,750

Available-for-Sale Investments (Tables)
$ in Thousands

6 Months Ended

Jun. 30, 2024

USD ($)

Debt Securities, Available-for-Sale, Amortized Cost, Total

$ 11,123

Schedule of fair the value of the Company's short-term investments by type

The following table summarizes the fair value of the Company's short-term investments by type (in thousands):


	June 30, 2024
	Amortized		Unrealized			Fair
	Cost		Losses			Value
Treasury bills	$	11,123	$	(1	)	$	11,122
Total available-for-sale investments	$	11,123	$	(1	)	$	11,122

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Assets And Liabilities That Are Measured at Fair Value

The following table summarizes the assets and liabilities that are measured at fair value and the classification by level of input within the fair value hierarchy (in thousands):


	June 30, 2024
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	18,238	$	—	$	—	$	18,238
Short-term investments		11,122		—		—		11,122
Total assets	$	29,360	$	—	$	—	$	29,360

Liabilities:
Warrant liabilities	$	—	$	—	$	9,121	$	9,121
Total liabilities	$	—	$	—	$	9,121	$	9,121


	December 31, 2023
	Level 1		Level 2		Level 3		Recorded Value
Assets:
Cash and cash equivalents	$	28,920	$	—	$	—	$	28,920
Total assets	$	28,920	$	—	$	—	$	28,920

Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Potential Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share

The Company’s potential common stock equivalents that have been excluded from the computation of diluted net loss per share for all periods presented because of their antidilutive effect consisted of the following:


	Six Months Ended June 30,
	2024		2023
Outstanding stock options		12,767,330		9,105,534
Non-vested restricted stock units		437,305		895,666
Common stock warrants		11,140,907		29,796
		24,345,542		10,030,996

The Company - Additional Information (Details) - USD ($)				6 Months Ended
	Feb. 06, 2024	Nov. 01, 2023	Aug. 08, 2022	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	May 31, 2023	Sep. 30, 2016
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Entity incorporation date				May 26, 2011
Cash and cash equivalents				$ 18,238,000		$ 28,920,000
Cash, cash equivalents and short-term investments				29,400,000
Maintenance Fee Operating License Liability Payments Due Year Five				500,000
Maintenance Fee Operating License Liability Payments Due Year Four				400,000
Maintenance Fee Operating License Liability Payments Due Year Three				350,000
Maintenance Fee Operating license Liability Payments Due Year Two				$ 250,000
Proceeds From Registered Direct Offering	$ 13,900,000
Common Stock Warrants
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrant Expiration Date	Aug. 09, 2029
Class of Warrant or Right, Date from which Warrants or Rights Exercisable	Aug. 09, 2024
Class of warrant Exercise	$ 1.62
Common Stock Warrants [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Class of warrant Exercise								$ 10.74
Purchase price of share and warrant	$ 1.35
Maximum [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of stock that can be purchased by each warrant								29,796
Maximum [Member] \| Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares sold under facility	11,111,111
Maximum [Member] \| Common Stock Warrants
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of stock that can be purchased by each warrant	11,111,111
Cantor Fitzgerald & Co. \| Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares sold under facility				339,912	26,316
Net proceeds from issuance of stock				$ 500,000	$ 32,000
Letter Agreement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone Payments			$ 12,500,000
License Arrangement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Clinical And Regulatory Milestone Payments		$ 30,000,000
Sales-Based Milestone Payments		47,500,000
Global Net Product Sales Milestones		2,000,000,000
Minimum Sales To Applied Highest Royalty Rate		1,500,000,000
Upfront License Fee		$ 5,000,000
At-the-market Sales Agreement \| Cowen and Company LLC
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Net proceeds from issuance of stock					$ 700,000
At-the-market Sales Agreement \| Cowen and Company LLC \| Common Stock \| In May 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares sold under facility					515,959
At-the-market Sales Agreement \| Cantor Fitzgerald & Co. \| In May 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares aggregate offering price							$ 50,000,000

Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total property and equipment	$ 4,392	$ 3,916
Less: Accumulated depreciation	(992)	(920)
Property and equipment, net	3,400	2,996
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	$ 249	249
Estimated Useful Lives (Years)	5 years
Machinery and Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	$ 1,441	581
Estimated Useful Lives (Years)	5 years
Computer Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	$ 20	20
Estimated Useful Lives (Years)	3 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	$ 476	476
Property, Plant, and Equipment, Useful Life, Term	Lesser ofuseful life orremaininglease term
Work in process
Property Plant And Equipment [Line Items]
Total property and equipment	$ 2,206	$ 2,590

Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accrued research and development	$ 2,270	$ 2,078
Accrued employee costs	1,036	1,862
Accrued professional fees	34	38
Accrued expense	363	191
Accrued liabilities, current	$ 3,703	$ 4,169

Royalty Purchase and Sale Agreement - Additional Information (Details) - USD ($) $ in Millions		6 Months Ended
	Aug. 08, 2022	Jun. 30, 2024
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Initial proceeds from royalty purchase and sales agreement		$ 32.5
Purchase and sale agreement description		The Purchase and Sale Agreement will automatically expire, and the payment of Royalties from the Royalty Sub to HCR will cease, when HCR has received payments of the Royalties equal to 2.5 times the aggregate amount of payments made by HCR under the Purchase and Sale Agreement if the Second Milestone Event is achieved on or prior to December 31, 2024 (the “Initial Cap”). If the Second Milestone Event is not achieved on or prior to December 31, 2024, payment of Royalties from Royalty Sub to HCR will cease when HCR has received Royalties payments equal to 3.4 times the aggregate amount of payments under the Purchase and Sale Agreement (the “Alternative Cap”, and together with the Initial Cap, the “Cap Amount”). In the event of a change in control, acquiror will have the option to make a payment to HCR of the Cap Amount then in effect, less the aggregate amount of Royalty payments made by Royalty Sub to HCR under the Purchase and Sale Agreement as a one-time payment at which time, payment of Royalties to HCR will cease. Alternatively, in the event of a change in control, the acquiror will have the option to make an initial payment of 1.0 times the aggregate amount of payments made by HCR under the Purchase and Sale Agreement as of the date of such change in control, then in that event, payment of Royalties from Royalty Sub to HCR will cease when HCR has received total Royalties payments (including the initial payment) equal to the Alternative Cap. After the Purchase and Sale Agreement expires, all rights to receive the Royalties return to Royalty Sub.
Debt related commitment fees and debt related issuance costs		$ 1.9
Royalty Purchase And Sale Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Issuance costs		1.5
Proceeds from royalty purchase and sale agreement, net of issuance costs		$ 30.6
Royalty Sub Member [Member] \| Royalty Purchase And Sale Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Initial proceeds from royalty purchase and sales agreement net of certain expenses	$ 32.1
First milestone proceeds from royalty purchase and sale agreement	12.5
Second milestone proceeds from royalty purchase and sale agreement	20.0
Royalty Sub Member [Member] \| Royalty Purchase And Sale Agreement [Member] \| Maximum [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Maximum proceeds from royalty purchase and sale agreement	$ 65.0

Royalty Purchase and Sale Agreement - Schedule of Activity of Royalty Obligation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Royalty Obligation [Abstract]
Royalty Purchase and Sale Agreement balance at December 31, 2023	$ 41,988
Non-cash interest expense	4,743	$ 4,461
Balance at June 30, 2024	$ 46,731
Effective interest rate	22.00%

Common Stock - Additional Information (Details) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Equity [Abstract]
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares outstanding	74,731,139	62,850,841

Common Stock Warrants - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended
	Feb. 06, 2024	Sep. 30, 2016	Jun. 30, 2024	Dec. 31, 2023
Class Of Warrant Or Right [Line Items]
Weighted average remaining life of warrants			2 years 3 months
Fair value of warrants at issuance			$ 10,327
Warrant liabilities			$ 9,121	$ 0
Maximum
Class Of Warrant Or Right [Line Items]
Number of stock that can be purchased by each warrant		29,796
Convertible Stock Warrant
Class Of Warrant Or Right [Line Items]
Class of warrant Exercise		$ 10.74
Warrants expiration term		2026-09
Purchase price of share and warrant	$ 1.35
Common Stock \| Maximum
Class Of Warrant Or Right [Line Items]
Number of shares sold under facility	11,111,111
Common Stock Warrants
Class Of Warrant Or Right [Line Items]
Class of warrant Exercise	$ 1.62
Warrant exercisable date	Aug. 09, 2024
Warrant expiration date	Aug. 09, 2029
Fair value of warrants at issuance	$ 10,300
Proceeds allocated to the common stock	$ 4,700
Common Stock Warrants \| Maximum
Class Of Warrant Or Right [Line Items]
Number of stock that can be purchased by each warrant	11,111,111

Common Stock Warrants - Schedule of Change in Fair Value of the Warrant Liabilitie (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Class of Warrant or Right [Line Items]
Fair value of warrants at issuance February 9, 2024	$ 10,327
Change in fair value during the period	(1,206)
Fair value of warrants at June 30, 2024	$ 9,121

Common Stock Warrants - Schedule of Valuation of the Warrants (Details) - Warrant [Member]	Jun. 30, 2024 $ / shares shares
Measurement Input, Common Stock Price [Member]
Class of Warrant or Right [Line Items]
Common stock price \| $ / shares	$ 1.3
Measurement Input, Exercise Price Per Share [Member]
Class of Warrant or Right [Line Items]
Excercise price per share \| shares	1.62
Measurement Input, Expected Volatility [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding, measurement input	65.3
Measurement Input, Risk-free Interest Rate [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding, measurement input	4.24
Measurement Input, Contractual Term [Member]
Class of Warrant or Right [Line Items]
Contractual term (in years)	5 years 1 month 9 days
Measurement Input, Expected Dividend Yield [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding, measurement input	0

Share-Based Compensation - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) shares
2016 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common shares under employee stock purchase plan, shares \| shares	21,681
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to unvested stock options	$ 5.7
Expected to be recognized over a weighted average period	2 years 7 months 6 days
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected to be recognized over a weighted average period	1 year 1 month 6 days
Unrecognized compensation expense related to the RSUs	$ 0.8

Share-Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
2016 Employee Stock Purchase Plan
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 3	$ 3	$ 6	$ 7
2016 Employee Stock Purchase Plan \| Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	2	2	5	5
2016 Employee Stock Purchase Plan \| General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	1	1	1	2
2015 Employee Incentive Plan [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	864	732	1,666	1,439
2015 Employee Incentive Plan [Member] \| Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	384	295	804	606
2015 Employee Incentive Plan [Member] \| General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	480	437	862	833
Restricted Stock Units (RSUs)
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	253	326	510	656
Restricted Stock Units (RSUs) \| Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	118	163	237	332
Restricted Stock Units (RSUs) \| General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 135	$ 163	$ 273	$ 324

Share-Based Compensation - Summary of Activity Related to Stock Options (Details) - Employee Stock Option - 2011 Stock Incentive Plan, 2016 Equity Incentive Plan - $ / shares	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Options outstanding, Beginning balance	9,865,770
Number of Shares, Granted	3,034,375
Number of Shares, Exercised	(10,000)
Number of Shares, Forfeited	(122,815)
Number of Shares, Options outstanding, Ending balance	12,767,330
Number of Shares, Options exercisable	6,691,528	5,494,746
Weighted Average Exercise Price, Options outstanding, Beginning balance	$ 2.83
Weighted Average Exercise Price, Granted	1.32
Weighted Average Exercise Price, Exercised	1.24
Weighted Average Exercise Price, Forfeited	2.83
Weighted Average Exercise Price, Options outstanding, Ending balance	2.47
Weighted Average Exercise Price, Options exercisable	$ 3.45	$ 3.83

Share-Based Compensation - Summary of the Activity Related to RSUs (Details) - Restricted Stock Units (RSUs)	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested units outstanding, Number of Shares, Beginning balance \| shares	834,899
Number of Shares, Vested \| shares	(397,594)
Non-vested units outstanding, Number of Shares, Ending balance \| shares	437,305
Non-vested units outstanding, Weighted Average Exercise Price, Beginning balance \| $ / shares	$ 3.01
Weighted Average Exercise Price, Vested \| $ / shares	3.07
Non-vested units outstanding, Weighted Average Exercise Price, Ending balance \| $ / shares	$ 2.96

Commitments and Contingencies - Additional Information (Details)	1 Months Ended	6 Months Ended
	Nov. 30, 2022 USD ($) ft²	Jun. 30, 2024
Commitment And Contingencies [Line Items]
Lessee, operating lease, option to extend, description		The renewal option is not included in the calculation of the right-of-use asset and the lease liabilities as the Company has not yet determined if the Alpharetta, Georgia lease will be renewed.
GEORGIA
Commitment And Contingencies [Line Items]
Area of office leased \| ft²	14,000
Operating lease agreement term	4 years
Minimum monthly lease payments \| $	$ 30,747
Percentage of increase per year	3.00%

Commitments and Contingencies - Annual Maintenance Fee payments are due on Oct 1st of each year (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2024	$ 250
2025	250
2026	350
2027	400
2028	500
Total	$ 1,750

License and Other Agreements - Additional Information (Detail) - USD ($) $ in Millions				1 Months Ended	6 Months Ended
	Nov. 01, 2023	Mar. 10, 2020	Oct. 22, 2019	Sep. 30, 2021	Jun. 30, 2024
Bausch Health Ireland Limited
Research And Development Arrangement Contract To Perform For Others [Line Items]
Upfront and milestone payments			$ 20.0
Arctic Vision Limited \| Minimum
Research And Development Arrangement Contract To Perform For Others [Line Items]
Threshold percentage of sales for tiered royalties		10.00%
Arctic Vision Limited \| Maximum
Research And Development Arrangement Contract To Perform For Others [Line Items]
Threshold percentage of sales for tiered royalties		12.00%
XIPERE [Member] \| Bausch Health Ireland Limited
Research And Development Arrangement Contract To Perform For Others [Line Items]
First cumulative net sales of products					$ 45.0
XIPERE [Member] \| Bausch Health Ireland Limited \| Maximum
Research And Development Arrangement Contract To Perform For Others [Line Items]
Additional milestone payments			$ 55.0
License Arrangement
Research And Development Arrangement Contract To Perform For Others [Line Items]
Clinical and regulatory milestone payments	$ 30.0
Global net product sales milestones	2,000.0
Minimum sales to applied highest royalty rate	1,500.0
License Arrangement \| Arctic Vision Limited
Research And Development Arrangement Contract To Perform For Others [Line Items]
Consideration for territory expansion received				$ 3.0
License Arrangement \| Arctic Vision Limited \| Upfront Payment
Research And Development Arrangement Contract To Perform For Others [Line Items]
Upfront and milestone payments		$ 9.0
License Arrangement \| Arctic Vision Limited \| Maximum
Research And Development Arrangement Contract To Perform For Others [Line Items]
Development milestone payments		$ 22.5
License Arrangement \| BioCryst Pharmaceuticals, Inc
Research And Development Arrangement Contract To Perform For Others [Line Items]
Minimum sales to applied highest royalty rate	1,500.0
License Arrangement \| BioCryst Pharmaceuticals, Inc \| Upfront Payment
Research And Development Arrangement Contract To Perform For Others [Line Items]
License fee payment	5.0
License Arrangement \| BioCryst Pharmaceuticals, Inc \| Maximum
Research And Development Arrangement Contract To Perform For Others [Line Items]
Milestone payments	30.0
Clinical and regulatory milestone payments	47.5
Global net product sales milestones	$ 2,000.0

Available-for-Sale Investments - Schedule of The fair value of the Company's short-term investments (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 11,123
Unrealized Losses	(1)
Fair Value	11,122
Treasury bills [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	11,123
Unrealized Losses	(1)
Fair Value	$ 11,122

Fair Value Measurements - Schedule of Assets And Liabilities That Are Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	$ 9,121
Total assets	29,360	$ 28,920
Warrant [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	9,121
Short-Term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	11,122
Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	18,238	28,920
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0
Total assets	29,360	28,920
Fair Value, Inputs, Level 1 [Member] \| Warrant [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0
Fair Value, Inputs, Level 1 [Member] \| Short-Term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	11,122
Fair Value, Inputs, Level 1 [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	18,238	28,920
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0
Total assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Warrant [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0
Fair Value, Inputs, Level 2 [Member] \| Short-Term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0
Fair Value, Inputs, Level 2 [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	9,121
Total assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Warrant [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	9,121
Fair Value, Inputs, Level 3 [Member] \| Short-Term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0
Fair Value, Inputs, Level 3 [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 0	$ 0

Fair Value Measurements - Additional Information (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Significant transfers between Levels 1, 2 and 3	$ 0	$ 0

Related Party Transactions - Additional Information (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)
Related Party Transaction [Line Items]
License and other revenue	$ 81,000	$ 156,000
Related Party [Member]
Related Party Transaction [Line Items]
Expenses	200,000	500,000
Accrued Liabilities [Member] \| Related Party [Member]
Related Party Transaction [Line Items]
Liabilities	400,000	400,000
BioCryst License Agreement [Member] \| Related Party [Member]
Related Party Transaction [Line Items]
License and other revenue	81,000	200,000
Accounts Payable [Member] \| Related Party [Member]
Related Party Transaction [Line Items]
Liabilities	$ 40,000	$ 40,000

Net Loss Per Share - Potential Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share (Details) - shares	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	24,345,542	10,030,996
Outstanding Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	12,767,330	9,105,534
Non-vested Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	437,305	895,666
Common Stock Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	11,140,907	29,796

Subsequent Event - Additional Information (Details) - License Arrangement [Member] $ in Millions	Nov. 01, 2023 USD ($)
Subsequent Event [Line Items]
Upfront License Fee	$ 5.0
Clinical And Regulatory Milestone Payments	30.0
Global Net Product Sales Milestones	2,000.0
Minimum Sales To Applied Highest Royalty Rate	$ 1,500.0