ACELYRIN, Inc. USDC – Central District of California December 13, 2023 Class Period: May 4, 2023 – September 11, 2023Lead Plaintiff Deadline: January 16, 2024 Join Investigation Principle Contacts Jeffrey P. Campisi JCampisi@kaplanfox.comLaurence D. KingLKing@kaplanfox.com Kaplan Fox & Kilsheimer LLP Investigates Acelyrin, Inc. (Nasdaq: SLRN) Kaplan Fox & Kilsheimer LLP reminds investors that a complaint has been filed on behalf of investors that purchased or otherwise acquired Acelyrin, Inc. (“Acelyrin” or the “Company”) (NASDAQ: SLRN) securities between May 4, 2023 and September 11, 2023, inclusive (the “Class Period”). Click Here to Join the Action. If you purchased Acelyrin securities and would like to discuss this notice, your rights, or your interests please click here. You may also contact us by emailing jcampisi@kaplanfox.com or calling (212) 329-8571. If you are a member of the proposed Class, you may move the court no later than January 16, 2024 to serve as a lead plaintiff for the purported class. If you have losses, we encourage you to contact us to learn more about the lead plaintiff process. You need not seek to become a lead plaintiff in order to share in any possible recovery. The Complaint alleges that on May 4, 2023, Acelyrin’s common stock began publicly trading on the Nasdaq Global Select Market (“NASDAQ”) under the trading symbol “SLRN.” The Complaint further alleges that on September 11, 2023, after the markets closed, Acelyrin announced disappointing top-line results from Part B of the Phase 2b/3 trial evaluating izokibep for the treatment of moderate-to-severe HS. Specifically, izokibep failed to show statistically significant reduction in abscesses and inflammatory nodules in patients as compared to placebo. On this news, Acelyrin’s stock price fell $17.19 per share, or 61.61%, over the following two trading sessions, to close at $10.71 per share on September 13, 2023. WHY CONTACT KAPLAN FOX Kaplan Fox is a leading national law firm focusing on complex litigation with offices in New York, Oakland, Los Angeles, Chicago and New Jersey. With over 50 years of experience in complex litigation, Kaplan Fox offers the professional experience and track record that clients demand. Through prosecuting cases on the federal and state levels, Kaplan Fox has successfully shaped the law through winning many important decisions on behalf of our clients. For more information about Kaplan Fox & Kilsheimer LLP, you may visit our website at www.kaplanfox.com. This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules. If you have any questions about this notice, your rights, or your interests, please contact: Jeffrey P. Campisi, Esq.KAPLAN FOX & KILSHEIMER LLP800 Third Avenue, 38th FloorNew York, New York 10022(212) 329-8571E-mail: jcampisi@kaplanfox.com Laurence D. King, Esq.KAPLAN FOX & KILSHEIMER LLP1999 Harrison Street, Suite 1560Oakland, California 94612(415) 772-4704Fax: (415) 772-4707E-mail: lking@kaplanfox.com Connect with Kaplan Fox. Receive a complimentary case review now. Contact Us PowerSchool Holdings, Inc. See the Case Jabil, Inc. See the Case Zoetis, Inc. See the Case Globe Life Inc. See the Case Uniswap Labs See the Case Luna Innovations Incorporated See the Case Perion Network Ltd. See the Case Autodesk, Inc. See the Case Shoals Technologies Group, Inc. See the Case Vuzix Corporation See the Case bluebird bio, Inc. See the Case Sonder Holdings Inc. See the Case