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New York, New York--(Newsfile Corp. - September 9, 2026) - Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Hyliion Holdings Corp. (NYSE American: HYLN) and certain of its officers.

This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026, both dates inclusive (the "Class Period"). Such investors are encouraged to join this case by visiting the firm's site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit.

Hyliion Case Details

The Complaint alleges that throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that:

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; Thomas Healy, the Company's Chief Executive Officer (CEO), and Jon Panzer, the Company's Chief Financial Officer (CFO), timed the announcement and the foregoing price appreciation to insider trading; and 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.What's Next for Hyliion Investors?

A class action lawsuit has already been filed. If you wish to review a copy of the Complaint, you can visit the firm's site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit, or you may contact Peretz Bronstein, Esq. or his Client Relations Manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC at 917-590-0911. If you suffered a loss in Hyliion you have until October 27, 2026, to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as lead plaintiff.

No Cost to Hyliion Investors

We, Bronstein, Gewirtz & Grossman LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.

Why Bronstein, Gewirtz & Grossman, LLC for Hyliion Securities Class Action?

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide. More at www.bgandg.com

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC.

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Prior results do not guarantee similar outcomes.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/312001

Source: Bronstein, Gewirtz & Grossman, LLC

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Allegations center on Hyliion's alleged failure to evaluate or disclose whether a four-employee counterparty had the financial resources and development capability to execute a proposed $133 million KARNO deployment.

, /PRNewswire/ -- Levi & Korsinsky, LLP reminds purchasers of Hyliion Holdings Corp. (NYSE: HYLN) securities that a securities class action has been filed on behalf of shareholders who acquired shares between May 12, 2026 and June 23, 2026. Find out if you might qualify for recovery. You may also contact Joseph E. Levi, Esq. at [email protected] or (212) 363-7500.

HYLN closed at $7.37 per share on June 22, 2026 and at $4.92 per share on June 24, 2026, a two-day decline of $2.45 per share, or 33.24%. Motions for lead plaintiff must be filed with the Court by October 27, 2026.

The Alleged $133 Million Counterparty Gap

A non-binding letter of intent converts into revenue only if the counterparty can finance, permit, and build the sites where equipment is deployed. The action contends that Hyliion announced a "new data center partnership" with VFG Holdings, LLC covering up to 250 KARNO Cores, or roughly 50 megawatts of generation capacity over five years, without disclosing what evaluation, if any, had been performed of VFG's operational capabilities, financial resources, or development experience.

Deployment Capacity Behind the 250-Core Commitment

On June 23, 2026, Pelican Way Research published a report questioning the commercial viability of the arrangement, reporting that VFG had been incorporated only on January 5, 2026, appeared to have four employees and a "barely functioning" website, and had no publicly available funding history. As pleaded, that information was directly at odds with prior representations about the strength and credibility of the disclosed commercial pipeline.

Alleged Execution Risk by the Numbers

Up to 250 KARNO Cores, approximately 50 megawatts, over five years under a non-binding letter of intent Approximately $133 million in potential revenue, roughly one-third of the more than $400 million pipeline disclosed at "today's current pricing" Counterparty incorporated on January 5, 2026, roughly four months before the partnership was announced Four employees and no identified funding history reported for the counterparty Q1 2026 revenue of $2.8 million with a gross margin gain of $0.2 million, alongside reaffirmed full-year guidance of approximately $10 million Forecast net spending of just over $50 million and a projected year-end cash and investment balance of approximately $100 million "The complaint raises serious questions about whether investors received accurate information about the diligence behind a partnership that represented roughly one-third of a disclosed pipeline. Whether a counterparty could actually finance and build the proposed deployments is exactly the kind of information shareholders weigh." -- Joseph E. Levi, Esq.

Submit your information now or call (212) 363-7500.

WHY LEVI & KORSINSKY — Ranked in ISS Securities Class Action Services' Top 50 Report for seven consecutive years, Levi & Korsinsky, LLP is a nationally recognized leader in shareholder rights litigation. With a team of over 70 professionals, the firm has recovered hundreds of millions of dollars for investors. Investors who suffered losses have until October 27, 2026 to seek appointment as lead plaintiff.

Frequently Asked Questions About the HYLN Lawsuit

Q: How much did HYLN stock drop? A: Shares fell approximately 33.24%, a decline of $2.45 per share, after a research report questioned the commercial viability of the announced VFG Holdings data center partnership and the credibility of the Company's disclosed commercial pipeline. Investors who purchased shares during the Class Period at artificially inflated prices and suffered losses may be eligible to seek compensation.

Q: What specific misstatements does the HYLN lawsuit allege? A: The complaint alleges Hyliion Holdings Corp. made materially false or misleading statements regarding the credibility and commercial viability of its "new data center partnership" with VFG Holdings and the strength of a pipeline that included a non-binding letter of intent representing approximately $133 million in potential revenue. When the June 23, 2026 research report questioning that partnership was published, 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 documents do I need to to submit my information? A: Brokerage statements or trade confirmations showing purchase dates, share quantities, prices paid, and any subsequent sale dates and prices.

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: Do I need to go to court or give testimony? A: No. The overwhelming majority of class members never appear in court or give depositions. If there is a settlement or recovery, eligible class members generally submit a claim form to seek their portion.

Q: How long will the lawsuit take to resolve? A: Securities class actions typically take two to four years from initial filing to resolution. Timing depends on the court schedule, case developments, and whether the matter is dismissed, settled, or litigated further.

CONTACT:\
Levi & Korsinsky, LLP\
Joseph E. Levi, Esq.\
Ed Korsinsky, Esq.\
33 Whitehall Street, 27th Floor\
New York, NY 10004\
[email protected]\
Tel: (212) 363-7500\
Fax: (212) 363-7171

Attorney Advertising. Prior results do not guarantee similar outcomes.

SOURCE Levi & Korsinsky, LLP

LOS ANGELES, Sept. 08, 2026 (GLOBE NEWSWIRE) -- Schall, Brown & Schwartz LLP (“SBS”), a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Hyliion Holdings Corp. (“Hyliion” or “the Company”) (NYSE American: HYLN) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission.

Shareholders who purchased shares of HYLN during the class period listed are encouraged to contact the firm regarding possible lead plaintiff appointments. Appointment as lead plaintiff is not required to partake in any recovery.

CLASS PERIOD: May 12, 2026 to June 23, 2026

DEADLINE: October 27, 2026

If you are a shareholder who suffered a loss, click here to participate.

CASE DETAILS: According to the Complaint, the Company made false and misleading statements to the market. Hyliion announced a deal with a recently formed entity that doesn’t appear to have actual business operations specifically to improve its share price. Company executives including the CEO and CFO traded on this news. Based on these facts, the Company’s public statements were false and materially misleading throughout the class period. When the market learned the truth about Hyliion, investors suffered damages.

We also encourage you to contact Brian Schall or David Schwartz of Schall, Brown & Schwartz LLP, 2049 Century Park East, Suite 2460, Los Angeles, CA 90067, at 310-301-3335, to discuss your rights free of charge. You can also reach us through the firm's website at www.schallfirm.com, or by email at [email protected].

The class, in this case, has not yet been certified, and until certification occurs, you are not represented by an attorney. If you choose to take no action, you can remain an absent class member.

Join the case to recover your losses

WHY SBS? Schall, Brown & Schwartz LLP represents investors around the world and specializes in securities class action lawsuits and shareholder rights litigation. Bringing together the extensive experience and diverse skillsets of founding partners Brian Schall, Andrew Brown, and David Schwartz, SBS is dedicated to aggressively advocating for every investor.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and rules of ethics.        

CONTACT:

Schall, Brown & Schwartz LLP
Brian Schall, Esq.,
Andrew Brown, Esq.,
David Schwartz, Esq.,
www.schallfirm.com
Office: 310-301-3335
[email protected]

SOURCE:

Schall, Brown & Schwartz LLP

LOS ANGELES--(BUSINESS WIRE)--The Law Offices of Frank R. Cruz announces that a class action lawsuit has been filed on behalf of shareholders who purchased or otherwise acquired Hyliion Holdings Corp. (“Hyliion” or the “Company”) (NYSE: HYLN) common stock between May 12, 2026 and June 23, 2026, inclusive (the “Class Period”). Hyliion Holdings Corp. investors have until October 27, 2026 to file a lead plaintiff motion.

Law Offices of Frank R. Cruz Encourages Hyliion Holdings Corp. (HYLN) Shareholders To Inquire About Securities Fraud Class Action

ShareIF YOU SUFFERED A LOSS ON YOUR HYLIION HOLDINGS CORP. (HYLN) INVESTMENTS, CLICK HERE TO SUBMIT A CLAIM TO POTENTIALLY RECOVER YOUR LOSSES IN THE ONGOING SECURITIES FRAUD LAWSUIT.

You can also contact the Law Offices of Frank R. Cruz to discuss your legal rights by email at [email protected], by telephone at (310) 914-5007, or visit our website at www.frankcruzlaw.com.

What Happened?

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.” The report alleged that a recent letter of intent the Company announced with VFG Holdings, LLC (“VFG”) for a major deal “is a sham” because VFG “does not appear to have any substance,” has a website that “contains just two pages” and appears to only have four employees. The report called into question whether VFG is an “AI data center integrator” capable of the deal previously announced by the Company.

On this news, the price of Hyliion stock fell $1.27 per share, or 17.2%, to close at $6.10 on June 23, 2026, thereby injuring investors. The following day, Hyliion stock fell another $1.18 per share, or 19.3%, to close at $4.92 on June 24, 2026, thereby injuring investors further.

What Is The Lawsuit About?

The complaint filed in this class action alleges that between May 12, 2026 and June 23, 2026, Defendants made materially false and/or misleading statements, as well as failed to disclose material adverse facts about the Company’s business, operations, and prospects. Specifically, Defendants failed to disclose to investors 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.

Contact Us To Participate or Learn More:

If you purchased Hyliion securities, wish to learn more about this action, or have any questions concerning this announcement or your rights or interests with respect to these matters, please click HERE or contact us at:

Law Offices of Frank R. Cruz
2121 Avenue of the Stars, Suite 800
Century City, CA 90067
Telephone: 310-914-5007
Email: [email protected]
Visit our website at: www.frankcruzlaw.com

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.

More News From The Law Offices of Frank R. Cruz

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Hyliion To Contact Him Directly To Discuss Their Options

If you purchased or acquired securities in Hyliion between May 12, 2026 and June 23, 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).

[You may also click here for additional information]

New York, New York--(Newsfile Corp. - September 8, 2026) - Faruqi & Faruqi, LLP, a leading national securities law firm, is investigating potential claims against Hyliion Holdings Corp. ("Hyliion" or the "Company") (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.

Faruqi & Faruqi is a leading national securities law firm with offices in New York, Pennsylvania, California and Georgia. The firm has recovered hundreds of millions of dollars for investors since its founding in 1995. See www.faruqilaw.com.

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: (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 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.

Faruqi & Faruqi, LLP also encourages anyone with information regarding Hyliion's conduct to contact the firm, including whistleblowers, former employees, shareholders and others.

To learn more about the Hyliion class action, go to www.faruqilaw.com/HYLN or call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310).

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Frequently Asked Questions (FAQ) for Investors Regarding the Hyliion Securities Class Action Lawsuit:

What is the Hyliion securities fraud lawsuit about?

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. On June 23, 2026, Pelican Way Research published a report critical of the company and its deal announcement, after which Hyliion's stock price allegedly fell $1.27 per share, or approximately 17.2%, to close at $6.10.

Who may be eligible to participate in the lawsuit?

Investors who purchased or otherwise acquired Hyliion Holdings Corp. (NYSE American: HYLN) securities on the New York Stock Exchange between May 12, 2026 and June 23, 2026, inclusive, may be eligible to participate in this lawsuit. Eligible investors are not required to seek appointment as lead plaintiff in order to be considered a class member or to potentially share in any recovery that may be obtained. Class membership is open to all qualifying investors who suffered losses on their Hyliion holdings during the stated class period, subject to the outcome of the litigation. Investors who believe they may qualify are encouraged to review their trading records to determine whether their purchases fall within the applicable timeframe.

What is a lead plaintiff, and how can I seek appointment?

A lead plaintiff is a class member appointed by the court to act as the representative party on behalf of all class members in directing the litigation, including decisions regarding litigation strategy and the selection of lead counsel. Any investor who purchased Hyliion securities during the class period and suffered a loss may move for appointment as lead plaintiff, and the court generally appoints the movant with the largest financial interest in the relief sought who otherwise satisfies applicable legal requirements. The deadline to file a motion seeking appointment as lead plaintiff is October 27, 2026. Importantly, investors are not required to seek or serve as lead plaintiff in order to participate in the class action or to share in any recovery that the litigation may produce.

Why should investors contact Faruqi & Faruqi, LLP?

Faruqi & Faruqi, LLP has represented investors in securities litigation for decades and has recovered hundreds of millions of dollars for shareholders. Investors who purchased Hyliion 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.

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/313378

Source: Faruqi & Faruqi LLP

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New York, New York--(Newsfile Corp. - September 8, 2026) - Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against Hyliion Holdings Corp. ("Hyliion" or the "Company") (NYSE American: HYLN) on behalf of investors that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026 (the "Class Period").

CLICK HERE TO JOIN THE CASE

If you are an investor in Hyliion and have suffered losses, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing [email protected] or by calling (646) 315-9003.

DEADLINE REMINDER: If you are a member of the proposed Class, you may move the court no later than October 27, 2026 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.

On May 12, 2026, according to the complaint, Hyliion announced a partnership with VFG Holdings LLC ("VFG") by means of a letter of intent ("LOI") to provide power modules to support data center applications. Further, the complaint alleges that after this announcement, Hyliion's stock appreciated over the next several days from a closing price of $2.68 per share on May 12, 2026 to close at $4.67 per share on May 15, 2026. According to the complaint, Defendants made false and misleading statements "in order to cause rapid price appreciation in Hyliion stock" and "to insider trade," among other things.

Then, on June 23, 2026, according to the complaint, Pelican Way Research issued a report alleging that the announced LOI with VFG "is a sham because the counterparty (VFG Holdings, or legally VFG Tech Holdings, LLC) does not appear to have any substance." On this news, the complaint alleges the price of Hyliion stock fell $1.27, or 17.2%, on June 23, 2026 and declined an additional $1.18 per share, or 19.3%, on June 24, 2026 to close at $4.92 per share.

WHY CONTACT KAPLAN FOX?

Kaplan Fox & Kilsheimer LLP is a nationally recognized law firm focused on complex litigation, with offices in New York, Oakland, Los Angeles, Chicago, and New Jersey. Founded in 1956, the firm has spent more than 50 years prosecuting securities, antitrust, and consumer protection actions in federal and state courts nationwide, recovering more than $10 billion for clients and the classes it has represented.

Kaplan Fox is widely regarded as one of the nation's premier plaintiffs' securities litigation firms and has received recognition from Chambers and Partners, Benchmark Litigation, Super Lawyers, and Lawdragon. Serving as lead or co-lead counsel in many landmark cases, the firm has secured some of the largest recoveries in the history of securities litigation, including a $2.425 billion recovery on behalf of Bank of America shareholders in In re Bank of America—the largest recovery ever obtained for claims under Section 14(a) of the Securities Exchange Act—$800 million recovered for the Arkansas Teacher Retirement System and other pension funds in ATRS v. Allianz Global Investors, and a $475 million settlement in In re Merrill Lynch.

For decades, Kaplan Fox has represented public pension funds, institutional investors, businesses, and individuals in high-stakes litigation. Through its successful advocacy and precedent-setting victories, the firm has helped shape important areas of securities and corporate law while advancing accountability and protecting investor interests.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules. Past results do not guarantee future outcomes.

If you have any questions about this Notice, your rights, or your interests, please contact:

Contacting or submitting information to Kaplan Fox & Kilsheimer LLP does not create an attorney-client relationship, nor an obligation on the part of Kaplan Fox to retain you as a client.

https://www.kaplanfox.com/case/hyliion-holdings-corp-class-action-lawsuit-learn-more-now/

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/313423

Source: Kaplan Fox & Kilsheimer LLP

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NEW YORK, Sept. 07, 2026 (GLOBE NEWSWIRE) --

WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of securities of Hyliion Holdings Corp. (NYSE American: HYLN) between May 12, 2026 and June 23, 2026, both dates inclusive (the “Class Period”), of the important October 27, 2026 lead plaintiff deadline in the securities class action first filed by the Firm.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Many of these firms do not actually handle securities class actions, but are merely middlemen that refer clients or partner with law firms that actually litigate the cases. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs’ Bar. Many of the firm’s attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor’s ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

Contact Information:

        Laurence Rosen, Esq.
        Phillip Kim, Esq.
        The Rosen Law Firm, P.A.
        275 Madison Avenue, 40th Floor
        New York, NY 10016
        Tel: (212) 686-1060
        Toll Free: (866) 767-3653
        Fax: (212) 202-3827
        [email protected]
        www.rosenlegal.com

NEW YORK, Sept. 07, 2026 (GLOBE NEWSWIRE) -- Wolf Haldenstein Adler Freeman & Herz LLP (“Wolf Haldenstein”), a nationally recognized securities litigation law firm, announces that a securities class action lawsuit has been filed in the United States District Court for the Western District of Texas against Hyliion Holdings Corp. (NYSE: HYLN) (“Hyliion” or the “Company”), on behalf of all investors who purchases Hyliion shares between May 12, 2026 and June 23, 2026, inclusive (the “Class Period”).

Investors who purchased Hyliion shares during the class period and suffered losses may be eligible to participate in the case, with the lead-plaintiff deadline set for October 27, 2026.

The filed Complaint alleges that:

On May 12, 2026, Hyliion announced a non-binding Letter of Intent (LOI) with VFG Holdings (“VFG”) involving up to 250 KARNO Cores / 50 MW of potential data-center power deployments over five years.The lawsuit alleges Hyliion presented the VFG relationship and its broader commercial pipeline more positively than was justified by the underlying facts.HYLN rose sharply after the May announcement.On June 23, 2026, Pelican Way Research published a report questioning whether VFG had the operational and financial substance to execute the proposed deal.On this news, the price of Hyliion stock fell $1.27, or 17.2%, on June 23, 2026, and declined an additional $1.18 per share, or 19.3%, on June 24, 2026, to close at $4.92 per share.
WHY WOLF HALDENSTEIN?

This illustrious firm, founded in 1888, is steadfast in their pursuit of justice for investors who have suffered financial harm due to these misrepresented statements. The law firm brings to the fore over 125 years of legal expertise in securities litigation and has a proven record of protecting the rights of investors.

We encourage all investors who have been affected or have information that will assist in our investigation, to contact Wolf Haldenstein Adler Freeman & Herz LLP.

There is no cost or obligation to speak with an attorney.

Contact:

Phone: (800) 575-0735 or (212) 545-4774Email: [email protected] Person: Gregory Stone, Director of Case and Financial Analysis
Firm Website: Wolf Haldenstein Adler Freeman & Herz LLP

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.

New York, New York--(Newsfile Corp. - September 6, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of securities of Hyliion Holdings Corp. (NYSE American: HYLN) between May 12, 2026 and June 23, 2026, both dates inclusive (the "Class Period"), of the important October 27, 2026 lead plaintiff deadline in the securities class action first filed by the Firm.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Many of these firms do not actually handle securities class actions, but are merely middlemen that refer clients or partner with law firms that actually litigate the cases. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/313221

Source: The Rosen Law Firm PA

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NEW YORK, Sept. 06, 2026 (GLOBE NEWSWIRE) -- Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Hyliion Holdings Corp. (NYSE: HYLN) and certain of its officers.

This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026, both dates inclusive (the “Class Period”). Such investors are encouraged to join this case by visiting the firm’s site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit.

Hyliion Case Details

The Complaint alleges that throughout the Class Period, 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, the Company's Chief Executive Officer (CEO), and Jon Panzer, the Company's Chief Financial Officer (CFO), timed the announcement and the foregoing price appreciation to insider trading; 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.    What's Next for Hyliion Investors?

A class action lawsuit has already been filed. If you wish to review a copy of the Complaint, you can visit the firm’s site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit. or you may contact Peretz Bronstein, Esq. or his Client Relations Manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC at 917-590-0911. If you suffered a loss in Hyliion you have until October 27, 2026, to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as lead plaintiff.

No Cost to Hyliion Investors

We, Bronstein, Gewirtz & Grossman LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys’ fees, usually a percentage of the total recovery, only if we are successful.

Why Bronstein, Gewirtz & Grossman, LLC for Hyliion Securities Class Action?

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide. More at www.bgandg.com

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC.

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Contact Info

Peretz Bronstein, Esq. or Nathan Miller
Bronstein, Gewirtz & Grossman, LLC
917-590-0911 | [email protected]

Attorney advertising.
Prior results do not guarantee similar outcomes.

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Hyliion To Contact Him Directly To Discuss Their Options

If you purchased or acquired securities in Hyliion between May 12, 2026 and June 23, 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).

[You may also click here for additional information]

New York, New York--(Newsfile Corp. - September 5, 2026) - Faruqi & Faruqi, LLP, a leading national securities law firm, is investigating potential claims against Hyliion Holdings Corp. (""Hyliion" or the "Company") (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.

Faruqi & Faruqi is a leading national securities law firm with offices in New York, Pennsylvania, California and Georgia. The firm has recovered hundreds of millions of dollars for investors since its founding in 1995. See www.faruqilaw.com.

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: (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 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.

Faruqi & Faruqi, LLP also encourages anyone with information regarding Hyliion's conduct to contact the firm, including whistleblowers, former employees, shareholders and others.

To learn more about the Hyliion class action, go to www.faruqilaw.com/HYLN or call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310).

Follow us for updates on LinkedIn, on X, or on Facebook.

Frequently Asked Questions (FAQ) for Investors Regarding the Hyliion Securities Class Action Lawsuit:

What is the Hyliion securities fraud lawsuit about?

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. On June 23, 2026, Pelican Way Research published a report critical of the company and its deal announcement, after which Hyliion's stock price allegedly fell $1.27 per share, or approximately 17.2%, to close at $6.10.

Who may be eligible to participate in the lawsuit?

Investors who purchased or otherwise acquired Hyliion Holdings Corp. (NYSE: HYLN) securities on the New York Stock Exchange between May 12, 2026 and June 23, 2026, inclusive, may be eligible to participate in this lawsuit. Eligible investors are not required to seek appointment as lead plaintiff in order to be considered a class member or to potentially share in any recovery that may be obtained. Class membership is open to all qualifying investors who suffered losses on their Hyliion holdings during the stated class period, subject to the outcome of the litigation. Investors who believe they may qualify are encouraged to review their trading records to determine whether their purchases fall within the applicable timeframe.

What is a lead plaintiff, and how can I seek appointment?

A lead plaintiff is a class member appointed by the court to act as the representative party on behalf of all class members in directing the litigation, including decisions regarding litigation strategy and the selection of lead counsel. Any investor who purchased Hyliion securities during the class period and suffered a loss may move for appointment as lead plaintiff, and the court generally appoints the movant with the largest financial interest in the relief sought who otherwise satisfies applicable legal requirements. The deadline to file a motion seeking appointment as lead plaintiff is October 27, 2026. Importantly, investors are not required to seek or serve as lead plaintiff in order to participate in the class action or to share in any recovery that the litigation may produce.

Why should investors contact Faruqi & Faruqi, LLP?

Faruqi & Faruqi, LLP has represented investors in securities litigation for decades and has recovered hundreds of millions of dollars for shareholders. Investors who purchased Hyliion 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.

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/313034

Source: Faruqi & Faruqi LLP

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NEW YORK, Sept. 04, 2026 (GLOBE NEWSWIRE) --

WHY: 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.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs’ Bar. Many of the firm’s attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor’s ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

Contact Information:

        Laurence Rosen, Esq.
        Phillip Kim, Esq.
        The Rosen Law Firm, P.A.
        275 Madison Avenue, 40th Floor
        New York, NY 10016
        Tel: (212) 686-1060
        Toll Free: (866) 767-3653
        Fax: (212) 202-3827
        [email protected]
        www.rosenlegal.com

LOS ANGELES, Sept. 04, 2026 (GLOBE NEWSWIRE) -- Schall, Brown & Schwartz LLP (“SBS”), a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Hyliion Holdings Corp. (“Hyliion” or “the Company”) (NYSE American: HYLN) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission.

Shareholders who purchased shares of HYLN during the class period listed are encouraged to contact the firm regarding possible lead plaintiff appointments. Appointment as lead plaintiff is not required to partake in any recovery.

CLASS PERIOD: May 12, 2026 to June 23, 2026

DEADLINE: October 27, 2026

If you are a shareholder who suffered a loss, click here to participate.

CASE DETAILS: According to the Complaint, the Company made false and misleading statements to the market. Hyliion announced a deal with a recently formed entity that doesn’t appear to have actual business operations specifically to improve its share price. Company executives including the CEO and CFO traded on this news. Based on these facts, the Company’s public statements were false and materially misleading throughout the class period. When the market learned the truth about Hyliion, investors suffered damages.

We also encourage you to contact Brian Schall or David Schwartz of Schall, Brown & Schwartz LLP, 2049 Century Park East, Suite 2460, Los Angeles, CA 90067, at 310-301-3335, to discuss your rights free of charge. You can also reach us through the firm's website at www.schallfirm.com, or by email at [email protected].

The class, in this case, has not yet been certified, and until certification occurs, you are not represented by an attorney. If you choose to take no action, you can remain an absent class member.

Join the case to recover your losses

WHY SBS? Schall, Brown & Schwartz LLP represents investors around the world and specializes in securities class action lawsuits and shareholder rights litigation. Bringing together the extensive experience and diverse skillsets of founding partners Brian Schall, Andrew Brown, and David Schwartz, SBS is dedicated to aggressively advocating for every investor.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and rules of ethics.        

CONTACT:

Schall, Brown & Schwartz LLP
Brian Schall, Esq.,
Andrew Brown, Esq.,
David Schwartz, Esq.,
www.schallfirm.com
Office: 310-301-3335
[email protected]

SOURCE:

 Schall, Brown & Schwartz LLP

New York, New York--(Newsfile Corp. - September 3, 2026) - WHY: 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.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/312954

Source: The Rosen Law Firm PA

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LOS ANGELES--(BUSINESS WIRE)--Glancy Prongay Wolke & Rotter LLP, a leading national shareholder rights law firm, announces that a securities fraud class action lawsuit has been filed on behalf of investors who purchased or otherwise Hyliion Holdings Corp. (“Hyliion” or the “Company”) (NYSE: HYLN) securities between May 12, 2026 and June 23, 2026, inclusive (the “Class Period”). Hyliion Holdings Corp. investors have until October 27, 2026 to file a lead plaintiff motion. IF YOU SUFFERED A LO.

San Diego, California--(Newsfile Corp. - September 3, 2026) - Robbins LLP informs investors that a securities class action has been filed on behalf of persons and entities that purchased or otherwise acquired Hyliion Holdings Corp. (NYSE American: HYLN) securities between May 12, 2026 and June 23 2026, inclusive (the "Class Period"). Hyliion is a power generator company whose primary product is the KARNQ Power Module.

The complaint alleges that Hyliion misled investors regarding the viability of its partnership with VFH Holdings LLC.

Investors who suffered significant losses during the Class Period may be eligible to participate in the lawsuit and should contact Robbins LLP for information about becoming lead plaintiff before the October 27, 2026, lead plaintiff deadline.

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Why Was Hyliion Sued?

According to the complaint, on May 12, 2026, Hyliion announced a partnership with VFG Holdings LLC by means of a letter of intent ("LOI") to provide power modules to support data center applications. After this announcement, Hyliion's stock appreciated over the next several days. Plaintiff contends that on May 19, 2026, defendants sold significant amounts of Hyliion stock.

Plaintiff alleges that during the class period defendants failed to disclose that:

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; the individual defendants timed the announcement and foregoing price appreciation to insider trade; and 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.Why Did Hyliion's Stock Drop?

Hyliion stock dropped 16% on Tuesday, June 23, 2026, following the release of a short-seller report from Pelican Way Research that questioned the legitimacy of the agreement with VFG because VFG was incorporated in January 2026, appeared to have only four LinkedIn employees, had a minimal website, and lacked evidence of funding or operating substance sufficient to support an order of that size. Pelican Way also questioned the legitimacy of Jason Green, co-founder and CEO of VFG, and his ability to raise the money needed to pay Hyliion. As the market absorbed the news, the stock declined another 19% to close at $4.92 per share on June 24, 2026.

Who May Be Eligible to Participate in the Hyliion Class Action?

The lawsuit seeks to represent investors who purchased or otherwise acquired Hyliion Holdings Corp. securities between May 12, 2026 and June 23 2026. Investors who suffered losses during that period may have legal rights under the federal securities laws.

What Is a Lead Plaintiff?

The lead plaintiff is a court-appointed investor who represents the interests of all class members throughout the litigation. Serving as lead plaintiff is not required to share in any potential recovery. Investors who do not seek appointment may remain absent class members if the case proceeds and later resolves successfully.

Shareholders who wish to seek appointment as lead plaintiff should contact Robbins LLP before the October 27, 2026 deadline.

Does it Cost Anything to Participate?

No. Robbins LLP represents investors on a contingency fee basis.

Contact Robbins LLP

If you lost money investing in Hyliion Holdings Corp. contact Robbins LLP for more information by submitting an inquiry, emailing attorney Aaron Dumas, Jr., or calling (800) 350-6003.

About Robbins LLP

A recognized leader in shareholder rights litigation, the attorneys and staff of Robbins LLP have been dedicated to helping shareholders recover losses, improve corporate governance structures, and hold company executives accountable for their wrongdoing since 2002. Since our inception, we have obtained over $1 billion for shareholders.

To be notified if a class action against Hyliion Holdings Corp. settles or to receive free alerts when corporate executives engage in wrongdoing, sign up for Stock Watch today.

Attorney Advertising. Past results do not guarantee a similar outcome.

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To view the source version of this press release, please visit https://www.newsfilecorp.com/release/312673

Source: Robbins LLP

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, /PRNewswire/ --

Why: 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.

So what: 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.

What to do next: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

Why Rosen Law: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers.

Details of the case: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

Contact Information:

     Laurence Rosen, Esq.
     Phillip Kim, Esq.
     The Rosen Law Firm, P.A.
     275 Madison Avenue, 40th Floor
     New York, NY 10016
     Tel: (212) 686-1060
     Toll Free: (866) 767-3653
     Fax: (212) 202-3827
     [email protected]
     www.rosenlegal.com

SOURCE THE ROSEN LAW FIRM, P. A.

Bragar Eagel & Squire, P.C. Litigation Partner Brandon Walker Encourages Investors Who Suffered Losses In Hyliion (HYLN) To Contact Him Directly To Discuss Their Options

If you purchased or acquired Hyliion common stock between May 12, 2026 to June 23, 2026 and would like to discuss your legal rights, contact Bragar Eagel & Squire partners Brandon Walker or Melissa Fortunato by email at [email protected] or by telephone at (212) 355-4648.

Click here to participate in the action.

NEW YORK, Sept. 02, 2026 (GLOBE NEWSWIRE) --

What’s Happening:

Bragar Eagel & Squire, P.C., a nationally recognized stockholder rights law firm, announces that a class action lawsuit has been filed against Hyliion Holdings Corp. (“Hyliion” or the “Company”) (HYLN) in the United States District Court for the Western District of Texas on behalf of all persons and entities who purchased or otherwise acquired Hyliion common stock between May 12, 2026 to June 23, 2026, both dates inclusive (the “Class Period”). Investors have until October 27, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit. Allegation Details:

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, the Company's Chief Executive Officer (CEO), and Jon Panzer, the Company'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. Next Steps:

If you purchased or otherwise acquired Hyliion shares and suffered a loss, are a long-term stockholder, have information, would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Brandon Walker or Melissa Fortunato by email at [email protected], telephone at (212) 355-4648, or by filling out this contact form. There is no cost or obligation to you. About Bragar Eagel & Squire, P.C.:

Bragar Eagel & Squire, P.C. is a nationally recognized law firm with offices in New York, South Carolina, and California. The firm represents individual and institutional investors in securities, derivative, and commercial litigation as well as individuals in consumer protection and data privacy litigation. The firm has a nationwide practice and routinely handles cases in both federal and state courts. For more information about the firm, please visit www.bespc.com.  Attorney advertising.  Prior results do not guarantee similar outcomes.
Follow us for updates on LinkedIn and Facebook, and keep up with other news by following Brandon Walker, Esq. on LinkedIn.

Contact Information:

Bragar Eagel & Squire, P.C.
Brandon Walker, Esq.

Melissa Fortunato, Esq.
(212) 355-4648
[email protected]
www.bespc.com

, /PRNewswire/ -- Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Hyliion Holdings Corp. (NYSE: HYLN) and certain of its officers.

This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026, both dates inclusive (the "Class Period"). Such investors are encouraged to join this case by visiting the firm's site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit.

Hyliion Case Details

The Complaint alleges that throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that:

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; Thomas Healy, the Company's Chief Executive Officer (CEO), and Jon Panzer, the Company's Chief Financial Officer (CFO), timed the announcement and the foregoing price appreciation to insider trading; and 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. What's Next for Hyliion Investors?

A class action lawsuit has already been filed. If you wish to review a copy of the Complaint, you can visit the firm's site: bgandg.com/cases/hyliion-holdings-corp-hyln-class_action_lawsuit. or you may contact Peretz Bronstein, Esq. or his Client Relations Manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC at 917-590-0911. If you suffered a loss in Hyliion you have until October 27, 2026, to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as lead plaintiff.

No Cost to Hyliion Investors

We, Bronstein, Gewirtz & Grossman LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.

Why Bronstein, Gewirtz & Grossman, LLC for Hyliion Securities Class Action?

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide. More at www.bgandg.com

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC.

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Contact Info
Peretz Bronstein, Esq. or Nathan Miller
Bronstein, Gewirtz & Grossman, LLC
917-590-0911 | [email protected]

Attorney advertising.
Prior results do not guarantee similar outcomes.

SOURCE Bronstein, Gewirtz & Grossman, LLC

, /PRNewswire/ -- Berger Montague PC, a leading national plaintiffs' law firm, announces a class action lawsuit against Hyliion Holdings Corp. (NYSE: HYLN) ("Hyliion" or the "Company") on behalf of investors who purchased or acquired Hyliion securities during the period from May 12, 2026 through June 23, 2026 (the "Class Period"). The deadline to apply for lead plaintiff is October 27, 2026.

Q&A

What is this lawsuit about?

This lawsuit concerns whether Hyliion and certain of its officers misled investors about the significance and prospects of the Company's purported data center partnership with VFG Holdings, LLC ("VFG").

On May 12, 2026, Hyliion issued a press release announcing that it had entered into a non-binding letter of intent ("LOI") with VFG establishing a strategic partnership to deploy up to 250 KARNO Power Modules, or approximately 50 megawatts of power generation capacity, at VFG's data center sites over the next five years.

On May 19, 2026 – within days of the VFG announcement – Hyliion disclosed in SEC filings that CEO Thomas Healy, CFO Jon Panzer, and several other Company insiders had sold shares pursuant to 10b5-1 trading plans.

Then, on June 23, 2026, Pelican Way Research published a report entitled "Hyliion: A Glorified Science Project Who Has Continuously Failed to Meet Expectations And Is Now Throwing Around A Meaningless Deal." The report alleged that the VFG LOI was a sham because VFG had only been formed in January 2026, appeared to have only about four employees, operated a barely functioning two-page website with no listed address, and had posted nothing on LinkedIn other than the announcement of its deal with Hyliion. On this news, Hyliion's stock price fell $1.27 per share, or 17%, to close at $6.10 on June 23, 2026. The following day, Hyliion's stock price fell a further $1.18 per share, or 19%, to close at $4.92 on June 24, 2026.

Who is Hyliion?

Hyliion, headquartered in Cedar Park, Texas, is a developer of modular power plant technology, including its KARNO Power Module.

What do I need to do?

If you are a Hyliion investor and would like to learn more about this action, CLICK HERE or please contact Berger Montague: Andrew Abramowitz at [email protected] or (215) 875-3015 or Caitlin Adorni at [email protected] or (267) 764-4865 or visit our website.

What is the Hyliion lead plaintiff deadline?

The deadline to apply for lead plaintiff appointment is October 27, 2026. This deadline applies only to investors seeking to serve as lead plaintiff. Class members who do not apply may still participate in any recovery without taking action before this date.

About Berger Montague

Berger Montague is one of the nation's preeminent law firms focusing on complex civil litigation, class actions, and mass torts in federal and state courts throughout the United States. With more than $2.4 billion in 2025 post-trial judgments alone, the Firm is a leader in the fields of complex litigation, antitrust, consumer protection, defective products, environmental law, employment law, securities, and whistleblower cases, among many other practice areas. For over 55 years, Berger Montague has played leading roles in precedent-setting cases and has recovered over $50 billion for its clients and the classes they have represented. Berger Montague is headquartered in Philadelphia and has offices in Chicago; Malvern, PA; Minneapolis; San Diego; San Francisco; Toronto, Canada; Washington, D.C., and Wilmington, DE.

For more information or to discuss your rights, please contact:

Andrew Abramowitz
Berger Montague
(215) 875-3015
[email protected]

Caitlin Adorni
Berger Montague
(267) 764-4865
[email protected]

SOURCE Berger Montague

New York, New York--(Newsfile Corp. - September 2, 2026) - Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against Hyliion Holdings Corp. ("Hyliion" or the "Company") (NYSE American: HYLN) on behalf of investors that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026 (the "Class Period").

CLICK HERE TO JOIN THE CASE

If you are an investor in Hyliion and have suffered losses, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing [email protected] or by calling (646) 315-9003.

DEADLINE REMINDER: If you are a member of the proposed Class, you may move the court no later than October 27, 2026 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.

On May 12, 2026, according to the complaint, Hyliion announced a partnership with VFG Holdings LLC ("VFG") by means of a letter of intent ("LOI") to provide power modules to support data center applications. Further, the complaint alleges that after this announcement, Hyliion's stock appreciated over the next several days from a closing price of $2.68 per share on May 12, 2026 to close at $4.67 per share on May 15, 2026. According to the complaint, Defendants made false and misleading statements "in order to cause rapid price appreciation in Hyliion stock" and "to insider trade," among other things.

Then, on June 23, 2026, according to the complaint, Pelican Way Research issued a report alleging that the announced LOI with VFG "is a sham because the counterparty (VFG Holdings, or legally VFG Tech Holdings, LLC) does not appear to have any substance." On this news, the complaint alleges the price of Hyliion stock fell $1.27, or 17.2%, on June 23, 2026 and declined an additional $1.18 per share, or 19.3%, on June 24, 2026 to close at $4.92 per share.

WHY CONTACT KAPLAN FOX?

Kaplan Fox & Kilsheimer LLP is a nationally recognized law firm focused on complex litigation, with offices in New York, Oakland, Los Angeles, Chicago, and New Jersey. Founded in 1956, the firm has spent more than 50 years prosecuting securities, antitrust, and consumer protection actions in federal and state courts nationwide, recovering more than $10 billion for clients and the classes it has represented.

Kaplan Fox is widely regarded as one of the nation's premier plaintiffs' securities litigation firms and has received recognition from Chambers and Partners, Benchmark Litigation, Super Lawyers, and Lawdragon. Serving as lead or co-lead counsel in many landmark cases, the firm has secured some of the largest recoveries in the history of securities litigation, including a $2.425 billion recovery on behalf of Bank of America shareholders in In re Bank of America—the largest recovery ever obtained for claims under Section 14(a) of the Securities Exchange Act—$800 million recovered for the Arkansas Teacher Retirement System and other pension funds in ATRS v. Allianz Global Investors, and a $475 million settlement in In re Merrill Lynch.

For decades, Kaplan Fox has represented public pension funds, institutional investors, businesses, and individuals in high-stakes litigation. Through its successful advocacy and precedent-setting victories, the firm has helped shape important areas of securities and corporate law while advancing accountability and protecting investor interests.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules. Past results do not guarantee future outcomes.

If you have any questions about this Notice, your rights, or your interests, please contact:

Contacting or submitting information to Kaplan Fox & Kilsheimer LLP does not create an attorney-client relationship, nor an obligation on the part of Kaplan Fox to retain you as a client.

https://www.kaplanfox.com/case/hyliion-holdings-corp-class-action-lawsuit-learn-more-now/

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/312414

Source: Kaplan Fox & Kilsheimer LLP

Ready to Announce with Confidence? Send us a message and a member of our TMX Newsfile team will contact you to discuss your needs.

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NEW YORK, Sept. 02, 2026 (GLOBE NEWSWIRE) -- Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against Hyliion Holdings Corp. (“Hyliion” or the “Company”) (NYSE: HYLN) on behalf of investors that purchased or otherwise acquired Hyliion securities between May 12, 2026 and June 23, 2026 (the “Class Period”).

CLICK HERE TO JOIN THE CASE

If you are an investor in Hyliion and have suffered losses, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing [email protected] or by calling (646) 315-9003.

DEADLINE REMINDER: If you are a member of the proposed Class, you may move the court no later than October 27, 2026 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.

On May 12, 2026, according to the complaint, Hyliion announced a partnership with VFG Holdings LLC (“VFG”) by means of a letter of intent (“LOI”) to provide power modules to support data center applications. Further, the complaint alleges that after this announcement, Hyliion's stock appreciated over the next several days from a closing price of $2.68 per share on May 12, 2026 to close at $4.67 per share on May 15, 2026. According to the complaint, Defendants made false and misleading statements “in order to cause rapid price appreciation in Hyliion stock” and “to insider trade,” among other things.

Then, on June 23, 2026, according to the complaint, Pelican Way Research issued a report alleging that the announced LOI with VFG “is a sham because the counterparty (VFG Holdings, or legally VFG Tech Holdings, LLC) does not appear to have any substance.” On this news, the complaint alleges the price of Hyliion stock fell $1.27, or 17.2%, on June 23, 2026 and declined an additional $1.18 per share, or 19.3%, on June 24, 2026 to close at $4.92 per share.

WHY CONTACT KAPLAN FOX?

Kaplan Fox & Kilsheimer LLP is a nationally recognized law firm focused on complex litigation, with offices in New York, Oakland, Los Angeles, Chicago, and New Jersey. Founded in 1956, the firm has spent more than 50 years prosecuting securities, antitrust, and consumer protection actions in federal and state courts nationwide, recovering more than $10 billion for clients and the classes it has represented.

Kaplan Fox is widely regarded as one of the nation's premier plaintiffs' securities litigation firms and has received recognition from Chambers and Partners, Benchmark Litigation, Super Lawyers, and Lawdragon. Serving as lead or co-lead counsel in many landmark cases, the firm has secured some of the largest recoveries in the history of securities litigation, including a $2.425 billion recovery on behalf of Bank of America shareholders in In re Bank of America—the largest recovery ever obtained for claims under Section 14(a) of the Securities Exchange Act—$800 million recovered for the Arkansas Teacher Retirement System and other pension funds in ATRS v. Allianz Global Investors, and a $475 million settlement in In re Merrill Lynch.

For decades, Kaplan Fox has represented public pension funds, institutional investors, businesses, and individuals in high-stakes litigation. Through its successful advocacy and precedent-setting victories, the firm has helped shape important areas of securities and corporate law while advancing accountability and protecting investor interests.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules. Past results do not guarantee future outcomes.

If you have any questions about this Notice, your rights, or your interests, please contact:

CONTACT:
Pamela A. Mayer
KAPLAN FOX & KILSHEIMER LLP
800 Third Avenue, 38th Floor
New York, New York 10022
(646) 315-9003
[email protected]

Laurence D. King
KAPLAN FOX & KILSHEIMER LLP
1999 Harrison Street, Suite 1501
Oakland, California 94612
(415) 772-4704
[email protected]

Contacting or submitting information to Kaplan Fox & Kilsheimer LLP does not create an attorney-client relationship, nor an obligation on the part of Kaplan Fox to retain you as a client.

https://www.kaplanfox.com/case/hyliion-holdings-corp-class-action-lawsuit-learn-more-now/

LOS ANGELES, Sept. 01, 2026 (GLOBE NEWSWIRE) -- The Portnoy Law Firm advises Hyliion Holdings Corp., (“Hyliion” or the "Company") (NYSE: HYLN) investors of a class action on behalf of investors that bought securities between May 12, 2026 - June 23, 2026, inclusive (the “Class Period”). HYLN investors have until October 27, 2026 to file a lead plaintiff motion.

Investors are encouraged to contact attorney Lesley F. Portnoy, by phone 310-692-8883 or email: [email protected], to discuss their legal rights, or join the case via https://portnoylaw.com/hyliion-holdings-corp. The Portnoy Law Firm can provide a complimentary case evaluation and discuss investors’ options for pursuing claims to recover their losses.

According to the Complaint, the Company made false and misleading statements to the market. Hyliion announced a deal with a recently formed entity that doesn’t appear to have actual business operations specifically to improve its share price. Company executives including the CEO and CFO traded on this news. Based on these facts, the Company’s public statements were false and materially misleading throughout the class period. When the market learned the truth about Hyliion, investors suffered damages.

The Portnoy Law Firm represents investors in pursuing claims caused by corporate wrongdoing. The Firm’s founding partner has recovered over $5.5 billion for aggrieved investors. Attorney advertising. Prior results do not guarantee similar outcomes.

Lesley F. Portnoy, Esq.
Admitted CA, NY and TX Bar
[email protected]
310-692-8883
www.portnoylaw.com

Attorney Advertising

NEW YORK, Sept. 01, 2026 (GLOBE NEWSWIRE) --

WHY: 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.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs’ Bar. Many of the firm’s attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor’s ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

Contact Information:

        Laurence Rosen, Esq.
        Phillip Kim, Esq.
        The Rosen Law Firm, P.A.
        275 Madison Avenue, 40th Floor
        New York, NY 10016
        Tel: (212) 686-1060
        Toll Free: (866) 767-3653
        Fax: (212) 202-3827
        [email protected]
        www.rosenlegal.com

New York, New York--(Newsfile Corp. - September 1, 2026) - WHY: 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.

SO WHAT: 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.

WHAT TO DO NEXT: 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. 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. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers.

DETAILS OF THE CASE: 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.

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.

No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm or on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm.

Attorney Advertising. Prior results do not guarantee a similar outcome.

-------------------------------

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/312444

Source: The Rosen Law Firm PA

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