Alleged misrepresentations about the credibility of Hyliion’s commercial pipeline are at the center of a securities class action, which contends that roughly one-third of a disclosed $400 million pipeline rested on a non-binding letter of intent with a four-employee, newly formed entity.

NEW YORK, Sept. 10, 2026 /PRNewswire/ — SueWallSt notifies investors in Hyliion Holdings Corp. (NYSE: HYLN) that a class action lawsuit has been filed on behalf of shareholders who purchased securities between May 12, 2026 and June 23, 2026. Find out if you could qualify to recover your losses. You may also contact Joseph E. Levi, Esq. at jlevi@SueWallSt.com or (888) SueWallSt.

Approximately $133 million of the more than $400 million in potential revenue Hyliion disclosed from non-binding letters of intent, roughly one third of the entire pipeline, was tied to a single counterparty, according to the lawsuit. HYLN shares lost about 33% of their value, a decline of roughly $2.45 per share, across the two trading sessions that followed the June 23, 2026 research report. Applications to serve as lead plaintiff must be filed by October 27, 2026.

The Alleged Commercial Pipeline Valuation Methodology

Hyliion described potential revenue from non-binding letters of intent by applying “today’s current pricing” to contemplated deployments of up to 250 KARNO Cores, or approximately 50 megawatts, over five years. The complaint alleges this presentation transformed an unexecuted, non-binding document, expressly subject to a definitive purchase agreement that had not been signed, into a headline growth figure, without disclosing material information about the counterparty’s capacity to perform.

Key Commercial Pipeline Allegations for Shareholders

• The lawsuit contends approximately $133 million of the disclosed pipeline depended on one non-binding letter of intent announced as a “new data center partnership.”
• The counterparty was reportedly incorporated on January 5, 2026, only months before the partnership was publicized.
• A June 23, 2026 research report described the entity as having roughly four employees, a “barely functioning website,” and no identifiable funding history.
• The complaint alleges Hyliion did not disclose the extent of any evaluation of the counterparty’s operational capabilities, financial resources, or development experience.
• Q1 2026 revenue of $2.8 million came from research and development services, not commercial module sales, while full-year guidance of approximately $10 million was reaffirmed.
• The lawsuit alleges these omissions caused shareholders to purchase HYLN stock at artificially inflated prices.

“This case presents important questions about pipeline disclosure obligations in the distributed power generation sector, particularly when a single non-binding letter of intent allegedly accounts for roughly one third of a company’s publicized revenue opportunity. Investors are entitled to understand the basis for management’s stated confidence in a counterparty before that opportunity is priced into the stock.” — Joseph E. Levi, Esq.

Submit your information here or call (888) SueWallSt.

WHY SUEWALLST: SueWallSt is powered by Levi & Korsinsky LLP. Levi & Korsinsky LLP has established itself as a nationally-recognized securities litigation firm that has secured hundreds of millions of dollars for aggrieved shareholders and built a track record of winning high-stakes cases. The firm has extensive expertise representing investors in complex securities litigation and a team of over 70 employees to serve our clients. For seven years in a row, Levi & Korsinsky has ranked in ISS Securities Class Action Services’ Top 50 Report as one of the top securities litigation firms in the United States.

Frequently Asked Questions About the HYLN Lawsuit

Q: Who is eligible to join the HYLN investor lawsuit? A: Investors who purchased HYLN stock or securities between May 12, 2026 and June 23, 2026 and suffered financial losses may be eligible. Eligibility is based on purchase date and documented losses, not on whether you still hold the shares.

Q: What specific misstatements does the HYLN lawsuit allege? A: The complaint alleges Hyliion made materially false or misleading statements regarding the credibility and commercial viability of its announced data center partnership with VFG Holdings and the reliability of its more than $400 million disclosed commercial pipeline during the Class Period. When a research report questioned the counterparty’s operational capabilities, financial resources, and development experience, the stock price declined sharply.

Q: What court was the HYLN class action filed in? A: The case was filed in the United States District Court for the Western District of Texas, Austin Division, governed by the Private Securities Litigation Reform Act of 1995.

Q: What do HYLN investors need to do right now? A: Investors may gather brokerage records showing purchase dates, share quantities, and prices paid. Submit your information for a no-cost, no-obligation evaluation of your potential recovery. No immediate action is required to remain eligible as an absent class member.

Q: What is a lead plaintiff and why does it matter? A: A lead plaintiff is the investor appointed by the court to represent the entire class. Lead plaintiffs are typically investors with the largest documented losses. Being appointed does not increase individual recovery but gives direct oversight of how the case is run.

Q: What if I already sold my HYLN shares, can I still recover losses? A: Yes. Eligibility is based on when you purchased, not whether you still hold the shares. Investors who bought during the Class Period and sold at a loss may still be eligible to participate.

Q: What does it cost me to participate? A: There is no upfront cost to submit your information and review whether you may be eligible to recover. Should you choose to participate in the securities class action, they are generally handled on a contingency basis, with any attorneys’ fees and expenses subject to court approval.

CONTACT:

Levi & Korsinsky, LLP

Joseph E. Levi, Esq.

33 Whitehall Street, 27th Floor

New York, NY 10004

jlevi@SueWallSt.com

Tel: (888) SueWallSt

Fax: (212) 363-7171

Attorney Advertising. Prior results do not guarantee similar outcomes.

View original content to download multimedia:https://www.prnewswire.com/news-releases/hyln-upcoming-deadline-suewallst-alerts-hyliion-holdings-corp-stockholders-of-securities-class-action—contact-the-firm-302874880.html

SOURCE SueWallSt.com