ACELYRIN Reiterates Benefits of Value-Maximizing Combination with Alumis

May 01, 2025 13:30 ET | Source: ACELYRIN, INC. Special Meeting of stockholders to vote on the transaction scheduled for May 13, 2025 Reminds stockholders to vote today FOR the proposed merger LOS ANGELES, May 01, 2025 (GLOBE NEWSWIRE) -- ACELYRIN, Inc. (Nasdaq: SLRN), a late-stage clinical biopharma company focused on accelerating the development and delivery of transformative medicines in immunology, today reiterated its confidence that the proposed combination with Alumis Inc. (Nasdaq: ALMS) is the best path forward and the most value-maximizing outcome for all ACELYRIN stockholders. Bruce Cozadd, Chair of the ACELYRIN Board of Directors and member of the independent transaction committee (the “Transaction Committee”), said, “The ACELYRIN Board and management team are confident that the proposed merger with Alumis represents the most value-maximizing path forward for our company’s stockholders. The agreement with Alumis follows a comprehensive and competitive process facilitated by the ACELYRIN Board. Furthermore, it reflects successful efforts by our Board to negotiate a revised agreement with a meaningful increase in ACELYRIN stockholders’ ownership in the combined company. With the Special Meeting just weeks away, we urge ACELYRIN stockholders to vote FOR the proposed merger with Alumis to protect the value of your investment.” The ACELYRIN Board’s disinterested and independent directors unanimously recommend that stockholders vote “FOR” the merger with Alumis, which: Creates a leading clinical-stage immunology company with a diversified portfolio of product candidates and substantial runway to reach multiple points of value inflectionProvides ACELYRIN stockholders with significant potential upside as part of the combined company with ACELYRIN stockholders retaining ~48% ownershipRepresents the culmination of a thorough review process by ACELYRIN’s Board, spearheaded by an independent and highly accomplished transaction committee comprised of Directors with extensive financial and biopharmaceutical company executive experience, to maximize value for stockholders VOTE “FOR” THE PROPOSED MERGER WITH ALUMIS TODAY The Board encourages stockholders to protect the value of their investment and not be influenced by the rhetoric of opportunistic, short-term focused investors who substantially increased their ownership stakes only after the announcement of the merger agreement. The Board is focused on the best interests of all stockholders in order to maximize long-term value creation. To that end, the ACELYRIN Board recommends that stockholders vote “FOR” the merger with Alumis in connection with the upcoming Special Meeting of Stockholders scheduled for May 13, 2025. Every stockholder’s vote is important, no matter how many shares they own. Please vote today. As disclosed by ACELYRIN on March 13, 2025, the ACELYRIN Board adopted a limited duration rights plan in response to a rapid accumulation of ACELYRIN stock by Tang Capital. The ACELYRIN Board determined to adopt the rights plan as a reasonable and proportionate response to the actions by Tang Capital as the ACELYRIN Board sought to maximize stockholder value. ACELYRIN informed Alumis of its decision and received consent from Alumis, as required under the merger agreement. Forward-Looking Statements This communication contains forward-looking statements within the meaning of federal securities laws, including the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Such statements are based upon current plans, estimates and expectations of management of Alumis Inc. (“Alumis”) and ACELYRIN, Inc. (“ACELYRIN”) in light of historical results and trends, current conditions and potential future developments, and are subject to various risks and uncertainties that could cause actual results to differ materially from such statements. The inclusion of forward-looking statements should not be regarded as a representation that such plans, estimates and expectations will be achieved. Words such as “anticipate,” “expect,” “project,” “intend,” “believe,” “may,” “will,” “should,” “plan,” “could,” “continue,” “target,” “contemplate,” “estimate,” “forecast,” “guidance,” “predict,” “possible,” “potential,” “pursue,” “likely,” and words and terms of similar substance used in connection with any discussion of future plans, actions or events identify forward-looking statements. All statements, other than statements of historical facts, including express or implied statements regarding the proposed transaction; the conversion of equity interests contemplated by the agreement and plan of merger, dated as of February 6, 2025, as amended on April 20, 2025, by and among the parties (as amended, the “merger agreement”); the issuance of common stock of Alumis contemplated by the merger agreement; the expected timing of the closing of the proposed transaction; the ability of the parties to complete the proposed transaction considering the various closing conditions; the expected benefits of the proposed transaction; the sufficiency of the combined company’s capital resources; the combined company’s cash runway, which is preliminary, unaudited and subject to change; the competitive ability and position of the combined company; the clinical pipeline of the combined company; and any assumptions underlying any of the foregoing, are forward-looking statements. Risks and uncertainties include, among other things, (i) the risk that the proposed transaction may not be completed in a timely basis or at all, which may adversely affect Alumis’ and ACELYRIN’s businesses and the price of their respective securities; (ii) the potential failure to receive, on a timely basis or otherwise, the required approvals of the proposed transaction, including stockholder approvals by both Alumis’ stockholders and ACELYRIN’s stockholders, and the potential failure to satisfy the other conditions to the consummation of the transaction; (iii) the effect of the announcement, pendency or completion of the proposed transaction on each of Alumis’ or ACELYRIN’s ability to attract, motivate, retain and hire key personnel and maintain relationships with partners, suppliers and others with whom Alumis or ACELYRIN does business, or on Alumis’ or ACELYRIN’s operating results and business generally; (iv) that the proposed transaction may divert management’s attention from each of Alumis’ and ACELYRIN’s ongoing business operations; (v) the risk of any legal proceedings related to the proposed transaction or otherwise, or the impact of the proposed transaction thereupon, including resulting expense or delay; (vi) that Alumis or ACELYRIN may be adversely affected by other economic, business and/or competitive factors; (vii) the occurrence of any event, change or other circumstance that could give rise to the termination of the merger agreement, including in circumstances which would require Alumis or ACELYRIN to pay a termination fee; (viii) the risk that restrictions during the pendency of the proposed transaction may impact Alumis’ or ACELYRIN’s ability to pursue certain business opportunities or strategic transactions; (ix) the risk that the anticipated benefits and synergies of the proposed transaction may not be fully realized or may take longer to realize than expected; (x) the impact of legislative, regulatory, economic, competitive and technological changes; (xi) risks relating to the value of Alumis securities to be issued in the proposed transaction; (xii) the risk that integration of the proposed transaction post-closing may not occur as anticipated or the combined company may not be able to achieve the growth prospects expected from the transaction; (xiii) the effect of the announcement, pendency or completion of the proposed transaction on the market price of the common stock of each of Alumis and ACELYRIN; (xiv) the implementation of each of Alumis’ and ACELYRIN’s business model and strategic plans for product candidates and pipeline, and challenges inherent in developing, commercializing, manufacturing, launching, marketing and selling potential existing and new products and product candidates; (xv) the scope, progress, results and costs of developing Alumis’ and ACELYRIN’s product candidates and any future product candidates, including conducting preclinical studies and clinical trials, and otherwise related to the research and development of Alumis’ and ACELYRIN’s pipeline; (xvi) the timing and costs involved in obtaining and maintaining regulatory approval for Alumis’ and ACELYRIN’s current or future product candidates, and any related restrictions, limitations and/or warnings in the label of any approved product; (xvii) the market for, adoption (including rate and degree of market acceptance) and pricing and reimbursement of Alumis’ and ACELYRIN’s product candidates, if approved, and their respective abilities to compete with therapies and procedures that are rapidly growing and evolving; (xviii) uncertainties in contractual relationships, including collaborations, partnerships, licensing or other arrangements and the performance of third-party suppliers and manufacturers; (xix) the ability of each of Alumis and ACELYRIN to establish and maintain intellectual property protection for products or avoid or defend claims of infringement; (xx) Alumis’ ability to successfully integrate ACELYRIN’s operations and personnel; and (xxi) potential delays in initiating, enrolling or completing preclinical studies and clinical trials. These risks, as well as other risks related to the proposed transaction, are described in the registration statement on Form S-4 (as amended, the “registration statement”) and definitive joint proxy statement/prospectus of Alumis and ACELYRIN (the “joint proxy statement/prospectus”) that were filed with the Securities and Exchanges Commission (the “SEC”) in connection with the proposed transaction. While the list of factors presented here and the list of factors to be presented in the registration statement are considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. For additional information about other factors that could cause actual results to differ materially from those described in the forward-looking statements, please refer to Alumis’ and ACELYRIN’s respective periodic reports and other filings with the SEC, including the risk factors identified in Alumis’ and ACELYRIN’s most recent Annual Reports on Form 10-K. The risks and uncertainties described above and in the SEC filings cited above are not exclusive and further information concerning Alumis and ACELYRIN and their respective businesses, including factors that potentially could materially affect their respective businesses, financial conditions or operating results, may emerge from time to time. Readers are urged to consider these factors carefully in evaluating these forward-looking statements, and not to place undue reliance on any forward-looking statements, which speak only as of the date hereof. Readers should also carefully review the risk factors described in other documents Alumis and ACELYRIN file from time to time with the SEC. The forward-looking statements included in this communication are made only as of the date hereof. ACELYRIN assumes no obligation and does not intend to update these forward-looking statements, even if new information becomes available in the future, except as required by law. Additional Information and Where to Find It In connection with the proposed merger, Alumis has filed with the SEC the registration statement, which includes the joint proxy statement/prospectus. The registration statement was declared effective on April 23, 2025 and the joint proxy statement/prospectus was delivered to stockholders of Alumis and ACELYRIN on or about April 23, 2025. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, SECURITY HOLDERS OF ALUMIS AND ACELYRIN ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER DOCUMENTS RELATING TO THE MERGER THAT WILL BE FILED WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. Investors and security holders will be able to obtain copies of the joint proxy statement/prospectus and other documents filed by Alumis and ACELYRIN with the SEC, without charge, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by Alumis will be available free of charge under the SEC Filings heading of the Investor Relations section of Alumis’ website at https://investors.alumis.com/. Copies of the documents filed with the SEC by ACELYRIN will be available free of charge under the Financials & Filings heading of the Investor Relations section of ACELYRIN’s website at https://investors.acelyrin.com/. Participants in the Solicitation Alumis and ACELYRIN and 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 Alumis’ directors and executive officers is set forth in the registration statement, which includes the joint proxy statement/prospectus. Information about ACELYRIN’s directors and executive officers is set forth in ACELYRIN’s Annual Report on Form 10-K, which was filed with the SEC on March 19, 2025. Stockholders may obtain additional information regarding the interests of such participants by reading the registration statement and the joint proxy statement/prospectus and other relevant materials filed with the SEC regarding the proposed merger when they become available. Investors should read the joint proxy statement/prospectus carefully before making any voting or investment decisions. No Offer or Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to buy 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 Securities Act. ACELYRIN, INC ContactsInvestor Relations and MediaTyler MarciniakVice President of Investor Relations and Corporate Operationstyler.marciniak@acelyrin.com or Sodali & CoSLRN@investor.sodali.com(800) 662-5200

ACELYRIN Reiterates Benefits of Value-Maximizing Combination with Alumis

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