statements. Such statements are based upon certain assumptions and assessments made by our management in light of their experience and their perception of historical trends, current conditions, expected future developments and other factors they believe to be appropriate. Certain factors that could cause results to differ materially from those projected or implied in the forward-looking statements are set forth in this Annual Report on Form 10-K for the year ended December 31, 2022 under the caption “Item 1A — Risk factors”.
We encourage you to read those descriptions carefully. We caution you not to place undue reliance on the forward-looking statements contained in this report. These statements, like all statements in this report, speak only as of the date of this report (unless an earlier date is indicated) and we undertake no obligation to update or revise the statements except as required by law. Such forward-looking statements are not guarantees of future performance and actual results will likely differ, perhaps materially, from those suggested by such forward-looking statements.
Overview
We are a clinical-stage biopharmaceutical company developing innovative cancer medicines based on cell cycle, transcriptional regulation and mitosis control biology. We reported no revenues for the years ended December 31, 2021 and 2022, and do not expect to report revenue for the foreseeable future.
During 2022, our primary focus has been on our transcriptional regulation program, which is evaluating fadraciclib, a CDK2/9 inhibitor, in solid tumors and hematological malignancies. The anti-mitotic program is evaluating plogosertib, a PLK1 inhibitor, in advanced cancers.
We currently retain all marketing rights worldwide to the compounds associated with our drug programs.
Agreements to Sell Securities
On August 12, 2021, we entered into a Controlled Equity Offering Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. ("Cantor"), pursuant to which we could issue and sell, from time to time, shares of our common stock having an aggregate offering price of up to $50.0 million through Cantor as the sales agent. Cantor could sell the our common stock by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) of the Securities Act.
On August 12, 2022, we became aware that the shelf registration statement on Form S-3 (file number 333-231923) (the “Registration Statement”) associated with this Sales Agreement had expired on June 21, 2022. Prior to becoming aware of the expiration, we sold an aggregate of 3,117,100 shares of our common stock at market prices, following the expiration of the Registration Statement and through August 12, 2022, for aggregate proceeds of approximately $4,494,496. There was no sale of shares post August 12, 2022. The sale of these shares may be subject to potential rescission rights by certain shareholders. As of December 31, 2022, there have been no claims or demands to exercise such rights. As a result of these potential rescission rights, we reclassified 3,117,100 shares, with an aggregate purchase price of $4,494,496 of our common stock as temporary equity, presented outside of stockholders’ equity. The reclassification of these shares shall remain for a period of one year from the transaction date. These shares have been treated as issued and outstanding for purposes of earnings per share and general financial reporting.
On August 15, 2022, due to expiry of the Registration Statement, the Sales Agreement was mutually terminated. A total of 3,281,067 shares, for gross proceeds of approximately $7.6 million, had been sold pursuant to the Sales Agreement, including 2,528,642 shares during the year ended December 31, 2022 for gross proceeds of approximately $3.4 million.
On March 12, 2021, we entered into an Underwriting Agreement (the “Underwriting Agreement”) with Oppenheimer & Co. Inc., as representative of the underwriters identified therein (collectively, the “Underwriters”), pursuant to which we agreed to issue and sell 1,807,143 shares of common stock, $0.001 par value per share, at a public offering price of $7.00 per share (the “Offering”) along with a 30-day overallotment option to purchase up to an additional 271,071 shares of common stock at the public offering price, less underwriting discounts and commissions. The closing of the offering occurred on March 16, 2021, and the net proceeds to us (including exercise of the over-