HYLN SHAREHOLDER NOTICE: Faruqi & Faruqi, LLP Reminds Hyliion Investors of Securities Class Action Lawsuit Deadline on October 27, 2026

Faruqi & Faruqi, LLP is investigating potential claims against Hyliion Holdings Corp. (NYSE American: HYLN) and reminds investors of the October 27, 2026 deadline to seek the role of lead plaintiff in a federal securities class action that has been filed against the Company. 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: (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) the Individual Defendants 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. On June 23, 2026, Pelican Way Research issued a report entitled "Hyliion: A Glorified Science Project Who Has Continuously Failed to Meet Expectations And Is Now Throwing Around A Meaningless Deal." On this news, Hyliion's stock price fell $1.27, or 17.2%, to close at $6.10 per share on June 23, 2026. The lawsuit alleges that Hyliion Holdings Corp. and certain of its executives engaged in securities fraud during the class period by making materially false and misleading statements about the company's business, operations, and prospects. Specifically, the complaint allegedly asserts that Defendants announced a deal with a recently formed entity that does not appear to have any actual business operations, purportedly to cause rapid and artificial appreciation in Hyliion's stock price. The lawsuit further alleges that certain individual defendants timed the announcement and resulting price appreciation to engage in insider trading.