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. (HYLN) files reports and disclosures with the U.S. Securities and Exchange Commission that provide detail on its financial condition, operations, and key developments related to its electricity-producing technologies. These SEC filings complement the company’s public news releases about the KARNO Power Module, distributed power projects, and regulatory milestones.
On this page, you can review Hyliion’s periodic and current reports, including Forms 10‑K and 10‑Q when filed, which describe revenue sources such as research and development services, operating expenses tied to advancing the KARNO platform, and information about cash, investments, and capital deployment. Current reports on Form 8‑K, such as those furnished in connection with quarterly results, outline material events including financial updates and significant operational milestones.
Stock Titan enhances these filings with AI‑powered summaries that highlight important sections, explain technical language, and surface items that may matter to investors, such as progress in product development, changes in research and development spending, or updates related to regulatory determinations affecting the KARNO technology. When insider transaction reports on Form 4 or proxy statements on Schedule 14A are available, they can provide additional insight into executive share activity and governance matters.
Filings are sourced in near real time from the SEC’s EDGAR system, and AI tools help organize them by type and topic so users can quickly locate quarterly and annual reports, 8‑K disclosures, and other relevant documents. This structure allows readers to move from high‑level AI explanations to the underlying Hyliion filings for a more detailed view of how the company reports on its distributed power generation business.
Hyliion Holdings Corp stockholder Jose Oxholm has filed a Form 144 notice to sell 60,000 shares of common stock. The planned sale is to be executed through UBS Financial Services Inc., with an aggregate market value of $117,000, and is targeted for around 12/12/2025 on the NYSE. The shares were acquired on 12/12/2025 through an employee benefit transaction, with 60,000 shares paid for in cash. Over the prior three months, Jose Oxholm sold an additional 31,105 common shares on 11/17/2025 for gross proceeds of $51,600.
Hyliion Holdings Corp has a planned sale of restricted securities under Rule 144. A holder intends to sell 40,000 shares of common stock through UBS Financial Services Inc. The planned sale has an indicated aggregate market value of $78,000 and is expected to occur on or about 12/12/2025 on the NYSE. The issuer has 175,400,000 shares of common stock outstanding, providing context for the size of the transaction.
The shares to be sold were acquired on 12/12/2025 in an employee benefit transaction from Hyliion Holdings Corp, with payment described as cash. The seller represents that they do not know of any undisclosed material adverse information about the company’s current or prospective operations when submitting this notice.
Hyliion Holdings Corp. reported that an affiliated holder plans to sell 220,000 shares of its common stock through UBS Financial Services Inc., with an aggregate market value of $432,000, on or about 12/12/2025 on the NYSE. The filing notes that Hyliion common stock outstanding was 175,400,000 shares.
The shares to be sold were acquired on 12/12/2025 in an employee benefit transaction from Hyliion Holdings Corp., with cash listed as the form of payment. The disclosure also records that Thomas Healy sold 159,776 common shares on 11/17/2025 for gross proceeds of $265,300 during the prior three months.
Hyliion Holdings Corp. reported a small insider stock sale by its Chief Strategy Officer. On 12/03/2025, the officer disposed of 2,700 shares of common stock at $1.86 per share. The filing explains these shares were sold at the issuer’s direction under an award agreement to cover the officer’s tax withholding obligations, meaning the sale was tied to equity compensation rather than an open-market portfolio decision. After this transaction, the officer beneficially owned 762,550 shares of Hyliion common stock.
Hyliion Holdings Corp has a shareholder filing a Rule 144 notice to sell common stock. The filing covers a proposed sale of 50,000 common shares through UBS Financial Services Inc. on the NYSE, with an indicated aggregate market value of $100,000. The issuer had 175,974,228 common shares outstanding at the time referenced. The shares to be sold were acquired on 12/03/2025 as part of an employee benefit arrangement, with payment on the same date. The form also notes that the same seller disposed of 25,218 common shares on 11/17/2025 for gross proceeds of $41,862, and includes a representation that the seller is not aware of undisclosed material adverse information about Hyliion’s operations.
Hyliion Holdings Corp. reported a routine insider share withholding by its Chief Financial Officer, Jon Panzer. On 11/28/2025, 2,435 shares of common stock were withheld at a price of $1.88 per share to cover tax obligations arising from the vesting and distribution of restricted stock units. After this tax-related transaction, Panzer beneficially owned 889,790 shares of Hyliion common stock in direct ownership. The filing is a standard Form 4 disclosure required for company insiders.
Hyliion Holdings Corp. reported an insider equity transaction by its Chief Accounting Officer. On 11/27/2025, 519 shares of Hyliion common stock were withheld at a price of
Hyliion Holdings Corp. reported an equity transaction involving its Chief Technology Officer, who is an officer of the company and filed individually. On November 26, 2025, the officer acquired 540,541 shares of common stock at $1.85 per share, recorded as an acquisition of securities. Following this transaction, the officer beneficially owned 1,048,113 shares directly.
The filing explains that this reflects a grant of restricted stock units under Hyliion’s 2024 Equity Incentive Plan. One-fifth of the award will vest on November 26, 2026, one-fifth on November 26, 2027, and three-fifths on November 26, 2028. On November 27, 2025, 1,361 shares were disposed of at $1.85 per share, representing shares withheld to cover tax liabilities related to vesting and distribution, leaving 1,046,752 shares beneficially owned directly.
Hyliion Holdings Corp. insider filing reports a routine tax-related share sale. The company’s Chief Legal & Compliance Officer, Jose Miguel Oxholm, sold 31,105 shares of Hyliion common stock on 11/17/2025 at a price of $1.66 per share. These shares were sold at the direction of the issuer under the terms of an award agreement, which allows the issuer to decide whether to sell shares to cover the officer’s tax withholding obligations.
The filing explains that this sale includes shares used to cover tax withholding for equity awards vesting on August 25, November 13, and November 14, 2025. Due to an administrative error by a third-party service provider, cash was initially used to cover the August 25 tax obligation, and the related share sale could not occur until the next open trading window. As a result, the portion of shares tied to the August 25 vesting was sold on November 17, 2025. After this transaction, the officer beneficially owned 779,050 shares, held directly.
Hyliion Holdings Corp. (HYLN) reported a Form 4 transaction for its Chief Strategy Officer, who sold 25,218 shares of common stock on November 17, 2025 at $1.66 per share. After this sale, the officer directly holds 765,250 common shares.
The filing explains that these shares were sold at the issuer’s direction under an award agreement to cover the officer’s tax withholding obligations tied to vesting dates on August 25, November 13, and November 14, 2025. An administrative error by a third-party service provider led to cash being used for August 25 taxes initially, so the related shares were instead sold on November 17, 2025, the first date in an open trading window when a sale could be completed.
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