ROSEN, A LEADING LAW FIRM, Encourages Hyliion Holdings Corp. Investors to Secure Counsel Before Important Deadline in Securities Class Action - HYLN

Rosen Law Firm, a global investor rights law firm, announces it has filed a class action lawsuit on behalf of purchasers of securities of Hyliion Holdings Corp. (NYSE American: HYLN) between May 12, 2026 and June 23, 2026, both dates inclusive (the "Class Period"). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than October 27, 2026 in the securities class action first filed by the Firm. If you purchased Hyliion securities during the Class Period you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement. To join the Hyliion class action, go to https://rosenlegal.com/cases/hyliion-holdings-corp/join or call Phillip Kim, Esq. toll-free at 866-767-3653 or email [email protected] for information on the class action. According to the lawsuit, defendants made false and/or misleading statements and/or failed to disclose that: (1) in order to cause rapid price appreciation in Hyliion stock, defendants announced a deal with an entity that was very recently formed and does not appear to have any actual business operations; (2) Thomas Healy, Hyliion's Chief Executive Officer ("CEO"), and Jon Panzer Hyliion's Chief Financial Officer ("CFO"), timed the announcement and foregoing price appreciation to insider trade; and (3) as a result, defendants' statements about Hyliion's business, operations, and prospects, were materially false and misleading and/or lacked a reasonable basis at all relevant times. When the true details entered the market, the lawsuit claims that investors suffered damages.