ARCH Arch Resources Inc

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 3, 2025

CONSOL Energy Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code:

(724) 416-8300

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

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. ☐

As previously disclosed, on August 20, 2024, CONSOL Energy Inc., a Delaware corporation (“CONSOL”), entered into an Agreement and Plan of Merger (as it may be amended from time to time, the “merger agreement”) with Arch Resources, Inc., a Delaware corporation (“Arch”), and Mountain Range Merger Sub Inc., a Delaware corporation and a wholly owned subsidiary of CONSOL (“Merger Sub”). The merger agreement provides that, upon the terms and subject to the conditions set forth therein, Merger Sub will merge with and into Arch (the “merger”), with Arch continuing as the surviving corporation in the merger and a wholly owned subsidiary of CONSOL. The merger agreement was unanimously approved by the board of directors of each of Arch and CONSOL.

In connection with the merger, CONSOL filed a Registration Statement on Form S-4 (as amended, the “Registration Statement”) with the Securities and Exchange Commission (the “SEC”) that also includes a prospectus of CONSOL and a joint proxy statement of Arch and CONSOL, as amended. The Registration Statement was declared effective on November 26, 2024, after which Arch filed a definitive joint proxy statement and CONSOL filed a final prospectus. Arch and CONSOL commenced mailing of the definitive joint proxy statement/prospectus to their respective stockholders on or about November 26, 2024.

Following the announcement of the merger agreement, as of the date of this Current Report on Form 8-K, three lawsuits challenging the merger have been filed (each, a “Lawsuit” and, collectively, the “Lawsuits”). The first Lawsuit, captioned Robert Garfield v. James Brock et al. (Case No. 2024-CV-08379), was filed in the Supreme Court of Pennsylvania for Dauphin county on December 12, 2024. The second Lawsuit, captioned Nathan Turner v. Arch Resources, Inc. et al. (Case No. 659683/2024), was filed in the Supreme Court of the State of New York for the county of New York on December 16, 2024. The third Lawsuit, captioned Michael Lewis v. Arch Resources, Inc. et al. (Case No. 659716/2024), was filed in the Supreme Court of the State of New York for the county of New York on December 17, 2024. In addition, Arch and CONSOL received demand letters from counsel representing individual stockholders of Arch and CONSOL, respectively (the “Demand Letters” and, together with the Lawsuits, the “Matters”). The Matters each generally allege that the joint proxy statement/prospectus filed by Arch and CONSOL, and their respective directors and officers, in connection with the proposed merger contains false and misleading statements and/or omissions, and demand that the parties issue corrective disclosures.

CONSOL and Arch believe that the allegations asserted in the Matters are without merit and additional disclosures are not required or necessary under applicable laws. However, in order to avoid the risk that the Matters delay or otherwise adversely affect the merger, and to minimize the cost, risk and uncertainty inherent in litigation, and without admitting any liability or wrongdoing, CONSOL and Arch have agreed to voluntarily supplement the joint proxy statement/prospectus as described in this Current Report on Form 8-K. CONSOL and Arch deny that they have violated any laws or breached any duties to CONSOL’s stockholders or Arch’s stockholders, as applicable. Nothing in this Current Report on Form 8-K shall be deemed an admission of the legal necessity or materiality under applicable laws of any of the disclosures set forth herein. To the contrary, CONSOL and Arch specifically deny all allegations in the Matters that any additional disclosure was or is required. To the extent that the information set forth herein differs from or updates information contained in the joint proxy statement/prospectus, the information set forth herein shall supersede or supplement the information in the joint proxy statement/prospectus. All page references are to pages in the joint proxy statement/prospectus, and terms used below, unless otherwise defined, have the meanings set forth in the joint proxy statement/prospectus. For clarity, new text within restated disclosures from the joint proxy statement/prospectus is highlighted with bold, underlined text, while deleted text is bold and stricken-through.

Supplemental Disclosures to Joint Proxy Statement/Prospectus in Connection with the Matters

The additional disclosures (the “supplemental disclosures”) in this Current Report on Form 8-K supplement the disclosures contained in the joint proxy statement/prospectus and should be read in conjunction with the disclosures contained in the joint proxy statement/prospectus, which should be read in its entirety. To the extent that information set forth in the supplemental disclosures differs from or updates information contained in the joint proxy statement/prospectus, the information in this Current Report on Form 8-K shall supersede or supplement the information contained in the joint proxy statement/prospectus. Page references in the below disclosures are to the joint proxy statement/prospectus, and defined terms used but not defined herein shall have the meanings set forth in the joint proxy statement/prospectus.

The fourth paragraph on page 84 under the heading “Background of the Merger” is amended as follows:

Also on August 16, 2024, Messrs. Lang, Brock and Thakkar met to discuss and agree upon the pro forma headquarters, name and management team of the combined company as well as other governance matters. At this meeting, it was discussed that Mr. Lang would serve as Chief Executive Officer of the combined company and Mr. Brock would serve as Executive Chair of the combined company. In addition, between August 16, 2024, and August 18, 2024, Messrs. Lang, Brock and Navarre, as well as representatives of PWP and Moelis, had several conversations regarding the proposed exchange ratio to be used in the possible transaction between Arch and CONSOL. During such discussions, Messrs. Lang and Navarre and representatives of PWP each proposed using an exchange ratio based on a trailing volume-weighted-average price of the companies rather than a current trading price.

The following paragraph is added after the fourth paragraph on page 84 under the heading “Background of the Merger”:

On August 16, 2024, representatives of Moelis provided customary relationship disclosures to the CONSOL board with respect to CONSOL and Arch, which included disclosure that as of the date of such disclosure Moelis did not own or trade any securities of CONSOL or Arch and that none of the Moelis managing directors working on the potential transaction owned any securities of CONSOL or Arch.

The penultimate paragraph on page 94 under the heading “Discounted Cash Flow Analysis—Standalone—CONSOL” is amended as follows:

Moelis utilized a range of discount rates of 9.25% to 12.00% based on an estimated range of CONSOL’s weighted average cost of capital (the “WACC”). The estimated WACC range reflected a derived cost of equity range using the capital asset pricing model (“CAPM”) (a) a risk-free rate based on 20-year U.S. government bonds, (b) a selected range of unlevered betas and debt to total capitalization ratios informed by the Selected Companies described below, (c) an equity risk premium and (d) a size premium. Moelis used the foregoing range of discount rates to calculate estimated present values as of June 30, 2024 of (i) estimated unlevered free cash flows of CONSOL for the second half of the calendar year ending December 31, 2024 through the end of the calendar year ending December 31, 2028 (in each case, discounted using a mid-year discounting convention) and (ii) estimated terminal values derived by applying a range of selected terminal multiples of 4.00x to 5.00x to CONSOL’s terminal year LL-Adjusted EBITDA (which was equal to LL-Adjusted EBITDA for the calendar year ending December 31, 2028).

The first full paragraph on page 95 under the heading “Discounted Cash Flow Analysis—Standalone—CONSOL” is amended as follows:

In calculating the implied equity value of CONSOL, Moelis removed the income statement and free cash flow impacts of the legacy liabilities for CONSOL (which CONSOL management estimated to be $557 million on a tax-affected and net of assets basis) and treated these liabilities as net debt adjustments.

The fourth full paragraph on page 95 under the heading “Discounted Cash Flow Analysis—Standalone—Arch” is amended as follows:

Moelis utilized a range of discount rates of 9.25% to 12.00% based on an estimated range of Arch’s WACC. The estimated WACC range reflected a derived cost of equity range using CAPM (a) a risk-free rate based on 20-year U.S. government bonds, (b) a selected range of unlevered betas and debt to total capitalization ratios informed by the Selected Companies described below, (c) an equity risk premium and (d) a size premium. Moelis used the foregoing range of discount rates to calculate estimated present values as of June 30, 2024 of (i) estimated unlevered free cash flows of Arch for the second half of the calendar year ending December 31, 2024 through the end of the calendar year ending December 31, 2028 (in each case, discounted using a mid-year discounting convention) and (ii) estimated terminal values derived by applying a range of selected terminal multiples of 4.50x to 5.50x to Arch’s terminal year LL-Adjusted EBITDA (which was equal to LL-Adjusted EBITDA for the calendar year ending December 31, 2028).

The last sentence of the first paragraph on page 96 under the heading “Discounted Cash Flow Analysis—Standalone—Arch” is amended as follows:

Moelis also removed the income statement and free cash flow impacts of the legacy liabilities for Arch (which CONSOL management estimated to be $244 million on a tax-affected and net of assets basis) and treated these liabilities as net debt adjustments.

The third and fourth full paragraphs on page 101 under the heading “Other Information—Equity Research Share Price Targets” is amended as follows:

Moelis reviewed publicly available consensus estimate stock price targets for shares of CONSOL common stock published as provided by Bloomberg or Wall Street research reports as of August 9, 2024, which ranged from $103.00 to $120.00 per share (which implied a range of equity values for CONSOL of $3,078 million to $3,586 million). Moelis compared this range with the closing trading price of the CONSOL common stock of $95.81 per share on August 19, 2024 (which implied an equity value of CONSOL of $2,863 million).

Moelis also reviewed publicly available consensus estimate stock price targets for shares of Arch common stock as provided by Bloomberg or Wall Street Research reports as of August 19, 2024, which ranged from $155.00 to $200.00 per share (which implied a range of equity values for Arch of $2,862 million to $3,693 million). Moelis compared this range with the closing trading price of the Arch common stock of $127.00 per share on August 19, 2024 (which implied an equity value of Arch of $2,345 million).

The third and fourth paragraphs under the heading “Opinion of Perella Weinberg Partners LP, Arch’s Financial Advisor—Summary of PWP’s Financial Analyses—Selected Public Companies Analysis” on pages 110 through 111 are amended and restated as follows:

The financial information reviewed included enterprise value as a multiple of normalized adjusted EBITDA, which we calculate as the average of actual 2023, estimated 2024, and estimated 2025 adjusted EBITDA. and which wWe refer to this as “Normalized EBITDA,.” and Additionally, we considered estimated 2024 and 2025 adjusted EBITDA, which we refer to as “2024E EBITDA” and “2025E EBITDA,” respectively,. These estimates are based on median broker consensus estimates and, with respect to Arch and CONSOL, the Arch Forecasts and CONSOL Forecasts, with balance sheet items in each case as of June 30, 2024. The low to high of observed following table summarizes EV / Normalized EBITDA multiples, for the selected public companies was 2.9x to 4.5x with a median of 4.3x. The low to high of observed EV / 2024E EBITDA multiples for the selected public companies was 3.3x to 5.8x with a median of 4.6x. The low to high of observed and EV / 2025E EBITDA multiples for of each of the selected public companies was 3.5x to 4.9x with a median of 4.4x.

Based on the ranges observed among the selected public companies, including those identified above, PWP applied selected EV / normalized adjusted EBITDA multiple ranges to the applicable Arch and CONSOL financial metrics, including analyst consensus estimates, the Arch Forecasts and the CONSOL Forecasts, to derive implied enterprise values for Arch and CONSOL. To calculate the implied equity value of Arch from its implied enterprise value, PWP added cash and cash equivalents of $279 million, subtracted debt (including capital leases) of $135 million, subtracted pension, other post-employment benefits and black lung liabilities (on a post-tax basis) and of $157 million, and subtracted net asset reclamation obligations (on a post-tax basis) of $87 million, in each case as provided by Arch management. To calculate the implied equity value of CONSOL from its implied enterprise value, PWP added cash and cash equivalents of $299 million, subtracted debt (including capital leases) of $192 million, subtracted pension and other post-employment benefits (on a post-tax basis) of $191 million, subtracted black lung and long-term disability liabilities (on a post-tax basis) of $147 million and subtracted asset reclamation obligations (on a post-tax basis) of $210 million, in each case as provided by CONSOL management. PWP calculated implied values per share by dividing the implied equity values by the applicable diluted shares (based upon the number of issued and outstanding shares as of August 14, 2024), which was 18.466 million for Arch and 29.883 million for CONSOL, based on information provided by Arch management and CONSOL management, as applicable, and with respect to Arch, including restricted stock units, and with respect to CONSOL, including restricted stock units and performance share units. PWP applied a selected multiple range of 4.0x to 5.0x to Arch’s 2023A-2025E Average EBITDA, resulting in implied reference ranges per share of Arch common stock of $129 to $162 and $125 to $158, based the Arch Forecasts and on analyst consensus estimates, respectively. PWP applied a selected multiple range of 4.0x to 5.0x to CONSOL’s 2023A-2025E Average EBITDA, resulting in implied reference ranges per share of CONSOL common stock of $99 to $127 and $91 to $117, based the CONSOL Forecasts and on analyst consensus estimates, respectively.

The first paragraph under the heading “Opinion of Perella Weinberg Partners LP, Arch’s Financial Advisor—Summary of PWP’s Financial Analyses—Discounted Cash Flow Value Analysis” on pages 111 through 112 is amended as follows:

PWP conducted a discounted cash flow analysis for each of Arch and CONSOL based on the Forecasts to derive a range of implied enterprise values for Arch and CONSOL by:

The third and fourth paragraphs under the heading “Opinion of Perella Weinberg Partners LP, Arch’s Financial Advisor—Summary of PWP’s Financial Analyses—Discounted Cash Flow Value Analysis” on page 112 are amended and restated as follows:

PWP used tThe discount rates as used by PWP for each of Arch and CONSOL were determined based on PWP’s analysis an estimated range of Arch’s and CONSOL’s respective weighted average cost of capital., which was derived by application of the Capital Asset Pricing Model, which takes into account certain company-specific metrics, including Arch’s and CONSOL’s respective target capital structure, the cost of long-term debt, forecasted tax rate and unlevered and levered (Barra) beta, as well as certain financial metrics for the United States financial markets generally, including market risk premium and the 20-year treasury rate (30-day average) as of August 19, 2024.

From the range of implied enterprise values, PWP derived a range of implied equity values for Arch and CONSOL. To calculate the implied equity value of Arch from its implied enterprise value, PWP added cash and cash equivalents of $279 million, subtracted debt (including capital leases) of $135 million, subtracted pension, other post-employment benefits and black lung liabilities (on a post-tax basis) of $157 million, subtracted net asset reclamation obligations (on a post-tax basis) of $87 million, and added the present value of net operating losses (using a discount rate of approximately 6.50%, which rate reflects the midpoint of Arch’s post-tax cost of debt as of August 19, 2024) of $77 million, in each case as provided by Arch management. To calculate the implied equity value of CONSOL from its implied enterprise value, PWP added cash and cash equivalents of $299 million, subtracted debt (including capital leases) of $192 million, subtracted pension and other post-employment benefits (on a post-tax basis) of $191 million, subtracted black lung and long-term disability liabilities (on a post-tax basis) of $147 million and subtracted asset reclamation obligations (on a post-tax basis) of $210 million, in each case as provided by CONSOL management. PWP calculated implied values per share by dividing the implied equity values by the applicable diluted shares (based upon the number of issued and outstanding shares as of August 14, 2024), which was 18.466 million for Arch and 29.883 million for CONSOL, based on information provided by Arch management and CONSOL management, as applicable, and with respect to Arch, including restricted stock units, and with respect to CONSOL, including restricted stock units and performance share units.

The third paragraph under the heading “Opinion of Perella Weinberg Partners LP, Arch’s Financial Advisor—Summary of PWP’s Financial Analyses—Equity Research Analysists’ Price Targets” on page 113 is amended as follows:

Based on comparisons of the high and low research analyst price targets for Arch and CONSOL, PWP derived a range of implied exchange ratios of shares of Arch common stock to shares of CONSOL common stock of 1.483x to 1.931x. PWP compared this exchange ratio range to the exchange ratio of 1.326 shares of CONSOL common stock to be received for each share of Arch common stock as provided for in the merger agreement. The five price targets for Arch observed, when discounted for a period of one year using a cost of equity of 10.50%, were $140, $145, $154, $163 and $179 per share. The two price targets for Arch observed, when discounted for a period of one year using a cost of equity of 11.00%, were $93 and $95 per share. The price targets published by equity research analysts do not necessarily reflect current market trading prices for shares of Arch common stock or CONSOL common stock and these estimates are subject to uncertainties, including the future financial performance of Arch, CONSOL and future financial market conditions.

The last paragraph on page 124 under the heading “Board of Directors and Management of the Combined Company Following the Completion of the Merger” is amended as follows:

Under the terms of the merger agreement, CONSOL has agreed to take all actions as may be necessary to cause (1) the number of directors constituting the combined company’s board as of the effective time of the merger to be eight and (2) the combined company’s board as of the effective time of the merger to be composed of (A) four directors designated by CONSOL, one of whom will be James A. Brock, and (B) four directors designated by Arch, two of whom will be Paul A. Lang and Richard A. Navarre. From and after the effective time of the merger, each person designated as a director of the combined company will serve as a director until such person’s successor has been appointed and qualified or elected or such person’s earlier death, resignation or removal in accordance with the organizational documents of the combined company. Directors of the combined company board will be selected by the membership of the current CONSOL board and Arch board based on their individual experience and skill sets, the overall skill set and composition of the resulting combined company board, and their willingness to serve on the combined company board.

The paragraph on page 133 under the heading “Mr. Brock’s Role with the Combined Company following Completion of the Merger” is amended as follows:

On August 20, 2024, Mr. Brock entered into a Waiver, Acknowledgment and Amendment, pursuant to which Mr. Brock has agreed to serve as Executive Chair of the combined company, reporting to the combined company’s board, following completion of the merger. Mr. Lang will serve as Chief Executive Officer of the combined company following the merger, reporting to Mr. Brock. Mr. Brock has further agreed that the change in his duties upon completion of the merger will not constitute “Good Reason” for purposes of and as defined in the Brock Employment Agreement. Mr. Brock will also serve on the combined company’s board as of the effective time of the merger. Other than as described in this joint proxy statement/prospectus, no changes to Mr. Brock’s compensation arrangements or the Brock Employment Agreement (described under the heading “CEO Employment Agreement” on page 58 of CONSOL’s annual proxy statement for CONSOL’s 2024 Annual Meeting of Stockholders, filed on April 1, 2024) have been agreed to or approved. Each of CONSOL and Arch has begun working with its third party advisors, including existing compensation consultants, to prepare materials regarding post-closing compensation arrangement alternatives. Following the merger, the combined company’s board and/or compensation committee will be presented with recommendations related to future executive officer compensation and will make all decisions relating to any such arrangements, including whether to grant any emergence or similar awards.

Cautionary Statement Regarding Forward-Looking Information

This report contains certain “forward-looking statements” within the meaning of federal securities laws. Forward-looking statements may be identified by words such as “anticipates,” “believes,” “could,” “continue,” “estimate,” “expects,” “intends,” “will,” “should,” “may,” “plan,” “predict,” “project,” “would” and similar expressions. Forward-looking statements are not statements of historical fact and reflect CONSOL’s and Arch’s current views about future events. Such forward-looking statements include, without limitation, statements about the benefits of the proposed transaction involving CONSOL and Arch, including future financial and operating results, CONSOL’s and Arch’s plans, objectives, expectations and intentions, the expected timing and likelihood of completion of the proposed transaction, and other statements that are not historical facts, including estimates of coal reserves, estimates of future production, assumptions regarding future coal pricing, planned delivery of coal to markets and the associated costs, future results of operations, projected cash flow and liquidity, business strategy and other plans and objectives for future operations. No assurances can be given that the forward-looking statements contained in this report will occur as projected, and actual results may differ materially from those projected. Forward-looking statements are based on current expectations, estimates and assumptions that involve a number of risks and uncertainties that could cause actual results to differ materially from those projected. These risks and uncertainties include, without limitation, the ability to obtain the requisite CONSOL and Arch stockholder approvals; the risk that an event, change or other circumstance could give rise to the termination of the proposed transaction; the risk that a condition to closing of the proposed transaction may not be satisfied; the risk of delays in completing the proposed transaction; the risk that the businesses will not be integrated successfully; the risk that the cost savings and any other synergies from the proposed transaction may not be fully realized or may take longer to realize than expected; the risk that any announcement relating to the proposed transaction could have adverse effects on the market price of CONSOL’s common stock or Arch’s common stock; the risk of litigation related to the proposed transaction; the risk that the credit ratings of the combined company or its subsidiaries may be different from what the companies expect; the diversion of management time from ongoing business operations and opportunities as a result of the proposed transaction; the risk of adverse reactions or changes to business or employee relationships, including those resulting from the announcement or completion of the proposed transaction; the dilution caused by CONSOL’s issuance of

additional shares of its capital stock in connection with the proposed transaction; changes in coal prices, which may be caused by numerous factors, including changes in the domestic and foreign supply of and demand for coal and the domestic and foreign demand for steel and electricity; the volatility in commodity and capital equipment prices for coal mining operations; the presence or recoverability of estimated reserves; the ability to replace reserves; environmental and geological risks; mining and operating risks; the risks related to the availability, reliability and cost-effectiveness of transportation facilities and fluctuations in transportation costs; foreign currency, competition, government regulation or other actions; the ability of management to execute its plans to meet its goals; risks associated with the evolving legal, regulatory and tax regimes; changes in economic, financial, political and regulatory conditions; natural and man-made disasters; civil unrest, pandemics, and conditions that may result from legislative, regulatory, trade and policy changes; and other risks inherent in CONSOL’s and Arch’s businesses.

All such factors are difficult to predict, are beyond CONSOL’s and Arch’s control, and are subject to additional risks and uncertainties, including those detailed in CONSOL’s annual report on Form 10-K for the year ended December 31, 2023, quarterly reports on Form 10-Q, and current reports on Form 8-K that are available on its website at https://investors.consolenergy.com/sec-filings and on the SEC’s website at http://www.sec.gov, and those detailed in Arch’s annual report on Form 10-K for the year ended December 31, 2023, quarterly reports on Form 10-Q and current reports on Form 8-K that are available on Arch’s website at https://investor.archrsc.com/sec-filings/ and on the SEC’s website at http://www.sec.gov.

Forward-looking statements are based on the estimates and opinions of management at the time the statements are made. Neither CONSOL nor Arch undertakes any obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. Readers are cautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

No Offer or Solicitation

This report is not intended to be, and shall not constitute, an offer to buy or sell or the solicitation of an offer to buy or sell any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made, except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Additional Information about the Transaction and Where to Find It

In connection with the proposed transaction, CONSOL filed with the SEC a registration statement on Form S-4 that includes a joint proxy statement of Arch and CONSOL and that also constitutes a prospectus of CONSOL. The registration statement was declared effective by the SEC on November 26, 2024, and Arch and CONSOL commenced mailing the definitive joint proxy statement/prospectus to their respective shareholders on or around November 26, 2024. Each of Arch and CONSOL may also file other relevant documents with the SEC regarding the proposed transaction. This document is not a substitute for the definitive joint proxy statement/prospectus or registration statement or any other document that Arch or CONSOL may file with the SEC. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT, JOINT PROXY STATEMENT/PROSPECTUS AND ANY OTHER RELEVANT DOCUMENTS THAT MAY BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT ARCH, CONSOL AND THE PROPOSED TRANSACTION.

Investors and security holders will be able to obtain free copies of the registration statement, definitive joint proxy statement/prospectus and other documents containing important information about Arch, CONSOL and the proposed transaction, once such documents are filed with the SEC through the website maintained by the SEC at http://www.sec.gov. Copies of the registration statement, definitive joint proxy statement/prospectus and other documents filed with the SEC by Arch may be obtained free of charge on Arch’s website at https://investor.archrsc.com/sec-filings/ or, alternatively, by directing a request by mail to Arch’s Corporate Secretary at One CityPlace Drive, Suite 300, St. Louis, Missouri, 63141. Copies of the registration statement, definitive joint proxy statement/prospectus and other documents filed with the SEC by CONSOL may be obtained free of charge on CONSOL’s website at https://investors.consolenergy.com/sec-filings or, alternatively, by directing a request by mail to CONSOL’s Corporate Secretary at 275 Technology Drive, Suite 101, Canonsburg, Pennsylvania 15317.

Participants in the Solicitation

Arch, CONSOL and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Arch, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in Arch’s proxy statement for its 2024 Annual Meeting of Stockholders, which was filed with the SEC on March 27, 2024, including under the headings “Executive Compensation,” “Director Compensation,” “Equity Compensation Plan Information,” and “Security Ownership of Directors and Executive Officers.” To the extent holdings of Arch common stock by the directors and executive officers of Arch have changed from the amounts of Arch common stock held by such persons as reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3 (“Form 3”), Statements of Changes in Beneficial Ownership on Form 4 (“Form 4”) or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 (“Form 5”), in each case filed with the SEC, including: the Form 3 filed by George John Schuller on March 19, 2024; and the Forms 4 filed by Pamela Butcher on March 13, 2024, March 18, 2024, June 17, 2024, September 16, 2024 and November 27, 2024, James Chapman on March 11, 2024, Paul Demzik on March 5, 2024, John Eaves on March 8, 2024, Patrick Kriegshauser on March 18, 2024, June 17, 2024, September 16, 2024 and November 27, 2024, Holly Koeppel on March 18, 2024, June 17, 2024, September 16, 2024 and November 27, 2024, Richard Navarre on March 18, 2024, June 17, 2024, September 16, 2024 and November 27, 2024, George John Schuller on March 21, 2024, Peifang Zhang on March 18, 2024, June 17, 2024, September 16, 2024 and November 27, 2024, John Ziegler on March 8, 2024, John Drexler on October 15, 2024, Rosemary Klein on October 15, 2024, Deck Slone on October 15, 2024 and Matthew Giljum on October 15, 2024. Information about the directors and executive officers of CONSOL, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in CONSOL’s proxy statement for its 2024 Annual Meeting of Stockholders, which was filed with the SEC on April 1, 2024, including under the headings “Board of Directors and Compensation Information,” “Executive Compensation Information” and “Beneficial Ownership of Securities.” To the extent holdings of CONSOL common stock by the directors and executive officers of CONSOL have changed from the amounts of CONSOL common stock held by such persons as reflected therein, such changes have been or will be reflected on Forms 3, Forms 4 or Forms 5, in each case filed with the SEC, including: the Forms 4 filed by James Brock on May 24, 2024 and July 1, 2024, John Mills on May 9, 2024, Cassandra Chia-Wei Pan on May 9, 2024, Valli Perera on May 9, 2024, Joseph Platt on May 9, 2024 and John Rothka on March 8, 2024. Other information regarding the participants in the proxy solicitations and a description of their direct and indirect interests, by security holdings or otherwise, are contained in the registration statement and joint proxy statement/prospectus and may be contained in other relevant materials to be filed with the SEC regarding the proposed transaction when such materials become available. Investors and security holders should read the registration statement and joint proxy statement/prospectus carefully before making any voting or investment decisions. You may obtain free copies of any of the documents referenced herein from Arch or CONSOL using the sources indicated above.

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 hereunto duly authorized.

Dated: January 3, 2025