Faruqi & Faruqi, LLP Urges Regeneron Pharmaceuticals, Inc. (REGN) Investors to Seek Counsel Before the September 14, 2026 Lead Plaintiff Deadline in the Securities Class Action

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses in Regeneron to Contact Him Directly to Discuss Their Options New York, New York--(Newsfile Corp. - August 29, 2026) - Faruqi & Faruqi, LLP , a leading national securities law firm, reminds investors of the September 14, 2026 deadline to seek the role of lead plaintiff in a federal securities class action that has been filed against Regeneron Pharmaceuticals, Inc. ("Regeneron" or the "Company") (NASDAQ: REGN). [You may also click here for additional information] WHY: Faruqi & Faruqi, LLP, a leading national securities law firm, informs investors of the federal securities class action on behalf of a class consisting of all persons and entities other than Defendants that purchased or otherwise acquired Regeneron securities between August 1, 2025 and May 15, 2026, inclusive (the "Class Period"). WHAT TO DO NEXT: To learn more about the Regeneron class action, go to www.faruqilaw.com/[REGN](/www.schallfirm.com%EF%BC%89%E3%82%84%E3%83%A1%E3%83%BC%E3%83%AB%EF%BC%88%5Bemail%C2%A0protected%5D%EF%BC%89%E3%81%A7%E3%82%82%E5%95%8F%E3%81%84%E5%90%88%E3%82%8F%E3%81%9B%E3%82%92%E5%8F%97%E3%81%91%E4%BB%98%E3%81%91%E3%81%A6%E3%81%84%E3%81%BE%E3%81%99%E3%80%82/us/REGN) or call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310) . A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than September 14, 2026 . The court-appointed lead plaintiff is the investor with the largest financial interest in the relief sought by the class who is adequate and typical of class members who directs and oversees the litigation on behalf of the putative class. Any member of the putative class may move the Court to serve as lead plaintiff through counsel of their choice, or may choose to do nothing and remain an absent class member. Your ability to share in any recovery is not affected by the decision to serve as a lead plaintiff or not. THE ALLEGATIONS: As detailed below, the complaint alleges that the Company and its executives violated federal securities laws by making false and/or misleading statements and/or failing to disclose that: the true state of Regeneron's Phase III Fianlimab-Libtayo Study; notably, that its preliminary statistical assumptions were fundamentally flawed, that the active treatment arm was failing to achieve meaningful clinical differentiation over standard therapies, and that the trial would ultimately fail to reach statistical significance on its primary endpoint even without overperformance of the control arm. Faruqi & Faruqi, LLP also encourages anyone with information regarding Regeneron's conduct to contact the firm, including whistleblowers, former employees, shareholders and others. Frequently Asked Questions (FAQ) for Investors Regarding the Regeneron Securities Class Action Lawsuit Who may be eligible to participate in the lawsuit? Investors who purchased or acquired Regeneron (NASDAQ: REGN) between August 1, 2025 and May 15, 2026 and would like to discuss your legal rights, call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310) . How much did Regeneron stock drop? Following the alleged corrective disclosures, Regeneron shares fell approximately 9.8% on May 18, 2026, as described in the complaint. Why should investors contact Faruqi & Faruqi, LLP? Faruqi & Faruqi, LLP is a leading national securities law firm with offices in New York, Pennsylvania, California and Georgia. Faruqi & Faruqi, LLP has represented investors in securities litigation for decades and has recovered hundreds of millions of dollars for shareholders. Investors who purchased Regeneron Pharmaceuticals, Inc. securities during the Class Period may contact the firm to discuss their legal rights, potential claims, and the lead plaintiff process at no cost or obligation. Follow us for updates on LinkedIn , on X , or on Facebook . Attorney Advertising. The law firm responsible for this advertisement is Faruqi & Faruqi, LLP ( www.faruqilaw.com ). Prior results do not guarantee or predict a similar outcome with respect to any future matter. We welcome the opportunity to discuss your particular case. All communications will be treated in a confidential manner. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/311847 Source: Faruqi & Faruqi LLP