Welcome to our dedicated page for Hyliion Holdings Corporation SEC filings (Ticker: HYLN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Hyliion Holdings Corp. filings document formal disclosures for a developer of modular power plant technology centered on the KARNO™ generator platform. Recent Form 8-K reports furnish quarterly and annual results announcements, including management updates on KARNO development, testing, customer applications, military programs, and related business milestones.
The company’s proxy materials cover board matters, shareholder voting items, executive compensation, equity awards, pay-versus-performance tables, and governance disclosures. Together, these filings provide the regulatory record for Hyliion’s operating results, public-company governance, compensation structure, and capital-market communications as it develops distributed power-generation technology.
Hyliion Holdings Corp. insider Jose Miguel Oxholm, the Chief Legal & Compliance Officer, reported an award-related share transaction. On March 3, 2026, 24,900 shares of common stock were sold at $2.04 per share to cover his tax withholding obligations under an award agreement, at the issuer’s sole discretion. After this transaction, he held 823,370 common shares directly.
Hyliion Holdings Corp. reported an insider transaction involving Chief Technology Officer Joshua T. Mook. On this Form 4, 14,816 shares of common stock were sold at $2.04 per share to cover his tax withholding obligations under an equity award. According to the award agreement, the decision to sell these shares was made at the sole discretion of the issuer. After this transaction, Mook directly owned 1,114,109 shares of Hyliion common stock.
Hyliion Holdings Corp.’s Chief Strategy Officer, Cheri Lantz, reported an issuer-directed tax-related share transaction. On this Form 4, 16,700 shares of common stock were sold at $2.04 per share under the issuer’s award agreement to cover her tax withholding obligations, with the sale decision made solely by the company. After this transaction, she holds 730,204 shares of Hyliion common stock directly.
Hyliion Holdings Corp. reported an insider transaction involving Chief Financial Officer Jon Panzer. On this Form 4, 16,820 shares of common stock were sold at a price of $2.04 per share at the direction of the company to cover his tax withholding obligations under an award agreement. After this transaction, Panzer directly holds 957,140 shares of Hyliion common stock.
Hyliion Holdings Corp. reported a tax-related share transaction involving Chief Executive Officer Thomas J. Healy. A total of 58,202 shares of common stock were sold at $2.05 per share at the direction of the company to cover his tax withholding obligations under an award agreement. Following this transaction, Healy directly owned 35,340,288 shares of Hyliion common stock.
Hyliion Holdings Corp. filed a shelf registration prospectus to offer up to $500,000,000 of securities, including common stock, preferred stock, debt securities, warrants and units, dated February 25, 2026.
The prospectus is a shelf registration permitting one or more offerings from time to time; specific terms, pricing and the method of distribution will be set in prospectus supplements. The Company states proceeds will be used for general corporate purposes, which may include capital expenditures. The filing discloses 177,812,784 shares of Common Stock outstanding as of February 19, 2026 and authorizes 250,000,000 shares of Common Stock and 10,000,000 shares of preferred stock.
Hyliion Holdings Corp. outlines its transition to the fuel-agnostic KARNO Power Module for distributed power generation, targeting data centers, industrial users, defense, EV charging and waste-gas applications. The 200 kW modular system aims for about 45% electrical efficiency with ultra-low emissions and reduced maintenance.
The company is still pre-revenue from product sales and currently depends on U.S. Navy Office of Naval Research contracts of up to $16 million plus $1.5 million for R&D services. Hyliion reported net losses of $57.2 million in 2025 and $52.0 million in 2024 and warns that commercialization of the KARNO generator may be delayed beyond late 2026 or may not occur.
As of June 30, 2025, non-affiliate equity market value was about $183 million, and 177,812,784 common shares were outstanding as of February 19, 2026. The company holds a sizeable patent portfolio around KARNO technology, relies on additive manufacturing capacity from GE-affiliated printers, and highlights risks from supplier concentration, government funding dependence, manufacturing scale-up, cybersecurity, and strong competition in distributed generation and R&D services.
Hyliion Holdings reported fourth-quarter and full-year 2025 results and highlighted progress on its KARNO modular power plant platform. Revenue came from research and development services, totaling $0.7 million in the fourth quarter and $3.5 million for the year.
The company posted a fourth-quarter net loss of $13.2 million and a full-year net loss of $57.2 million, driven mainly by ongoing R&D and operating expenses. Hyliion ended 2025 with $152.4 million in cash and investments, providing funding for continued product development and early deployments.
Operationally, Hyliion advanced its KARNO Power Module, operating five units, completing key UL certification tests, and demonstrating 175 kW of power with a design target of 200 kW by late 2026. The company is targeting initial KARNO deliveries and commercialization in 2026, expects around $10 million of 2026 revenue, and forecasts year-end 2026 cash and investments of about $100 million.
Hyliion Holdings Corp. director Melanie Trent reported an equity award. On February 11, 2026, she acquired 60,976 shares of common stock as a restricted stock unit (RSU) grant under the company’s 2024 Equity Incentive Plan at a reference price of $2.05 per share.
The RSU award will vest on February 11, 2027, meaning the shares become fully earned on that date if vesting conditions are met. After this grant, Trent beneficially owns 218,774 shares of Hyliion common stock in direct ownership.
Hyliion Holdings Corp. director Robert M. Knight Jr. reported acquiring 60,976 shares of common stock on February 11, 2026 through a restricted stock unit award valued at $2.05 per share. Following this equity grant, he directly holds 375,345 common shares. The RSU award will fully vest on February 11, 2027.