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Hyliion Holdings Corp. SEC Filings

HYLN NYSE

Welcome to our dedicated page for Hyliion Holdings 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.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on Hyliion Holdings's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into Hyliion Holdings's regulatory disclosures and financial reporting.

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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.

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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.

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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.

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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.

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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.

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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.

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Hyliion Holdings Corp. director Mary Gustanski reported an equity award of 60,976 shares of common stock on February 11, 2026. The shares were acquired as a grant of restricted stock units under Hyliion’s 2024 Equity Incentive Plan at a reference price of $2.05 per share.

Following this award, Gustanski’s directly held beneficial ownership increased to 256,379 shares of Hyliion common stock. The restricted stock unit award is scheduled to fully vest on February 11, 2027, meaning the shares become earned and unrestricted on that future date if vesting conditions are met.

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Hyliion Holdings Corp. director Richard Joseph Freeland reported an equity award of common stock on Form 4. On February 11, 2026 he acquired 60,976 shares at $2.05 per share as a grant under Hyliion’s 2024 Equity Incentive Plan. These restricted stock units will vest on February 11, 2027, bringing his directly held beneficial ownership to 283,774 shares after the award.

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Hyliion Holdings Corp. director Vincent T. Cubbage received an equity grant tied to common stock. On February 11, 2026, he was awarded 60,976 shares of common stock at a grant price of $2.05 per share, reported as an acquisition.

This award represents restricted stock units granted under Hyliion’s 2024 Equity Incentive Plan and will vest on February 11, 2027. Following this grant, Cubbage directly beneficially owns 1,092,863 shares of Hyliion common stock.

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Craig Jeffrey A reported acquisition or exercise transactions in this Form 4 filing.

Hyliion Holdings Corp. director Jeffrey A. Craig received an equity grant tied to the company’s common stock. On February 11, 2026, he was awarded 60,976 shares at $2.05 per share through a restricted stock unit grant under Hyliion’s 2024 Equity Incentive Plan. These restricted stock units will vest on February 11, 2027, meaning the shares become fully his on that date if conditions are met. Following this grant, Craig directly beneficially owns 402,845 Hyliion shares.

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FAQ

How many Hyliion Holdings (HYLN) SEC filings are available on StockTitan?

StockTitan tracks 103 SEC filings for Hyliion Holdings (HYLN), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for Hyliion Holdings (HYLN)?

The most recent SEC filing for Hyliion Holdings (HYLN) was filed on March 4, 2026.