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. Chief Accounting Officer Greg Standley reported an automatic share withholding related to equity compensation. On 11/14/2025, 2,275 shares of Hyliion common stock were disposed of at $1.70 per share under transaction code “F,” which indicates shares were withheld to cover tax liabilities from the vesting and distribution of restricted stock units. After this tax withholding event, Standley beneficially owns 226,417 shares of Hyliion common stock directly.
Hyliion Holdings Corp. (HYLN) Chief Commercial Officer Govindaraj Ramasamy reported automatic share withholding transactions related to equity compensation. On 11/13/2025, 4,110 shares of common stock were withheld at $1.68 per share, and on 11/14/2025, 7,397 shares were withheld at $1.70 per share. These are coded as transaction type “F,” meaning shares were withheld to cover tax liabilities arising from the vesting and distribution of restricted stock units. Following these transactions, the reporting person beneficially owned 552,454 shares of Hyliion common stock, held directly.
Hyliion Holdings Corp. officer reports tax-related share transactions. The company’s Chief Technology Officer reported multiple transactions in Hyliion common stock in mid-November 2025. On November 13, 2025, 4,110 shares were withheld at prices of $1.68 per share, and on November 14, 2025, 7,397 shares were withheld at $1.70 per share, both to cover tax liabilities tied to restricted stock unit vesting. On November 17, 2025, 9,039 shares were sold at $1.66 per share under the issuer’s award agreement to satisfy additional tax withholding obligations. After these transactions, the reporting person held 507,572 shares directly. The filing notes that the November 17 sale also corrected an earlier administrative error by a third-party service provider related to tax withholding for shares that vested on August 25, 2025.
Hyliion Holdings Corp. (HYLN) reported an insider equity update for its Chief Financial Officer, Jon Panzer. On 11/13/2025, 5,226 shares of common stock and on 11/14/2025, 9,406 shares were disposed of at prices of $1.68 and $1.70 per share, respectively. These dispositions were not open-market sales but shares withheld to cover a tax liability arising from the vesting and distribution of restricted stock units.
After these transactions, Panzer directly beneficially owned 892,225 shares of Hyliion common stock. The filing indicates this was a routine tax-related adjustment to his equity holdings, with no derivative securities reported in Table II.
Hyliion Holdings Corp. insider Joshua T. Mook, the company’s Chief Technology Officer, filed an amended Form 4 to correct a previously reported tax-withholding transaction. The earlier filing had shown shares of common stock withheld on August 25, 2025 under transaction code "F" due to an administrative error by the issuer’s third party service provider. The amendment clarifies that no shares were actually withheld on that date and updates Column 5 of Table I. Following the corrected entry, Mook is reported as beneficially owning 529,479 shares of common stock, held directly.
Hyliion Holdings (HYLN) insider activity is disclosed in a Form 144 notice covering a planned sale of restricted stock. The notice reports an intention to sell 31,105 shares of common stock through UBS Financial Services Inc. on the NYSE, with an aggregate market value of 51,600 and total shares outstanding of 175,974,228. The securities were acquired on 09/15/2025 in an employee benefit transaction from Hyliion Holdings, with the purchase price paid in cash. The seller also previously sold 3,357 common shares on 09/02/2025 for gross proceeds of 5,362. The signer represents that they are not aware of any undisclosed material adverse information about Hyliion’s current or prospective operations.
Hyliion Holdings (HYLN) has a holder planning to sell restricted or control common shares under Rule 144. The notice covers the proposed sale of 9,039 common shares through UBS Financial Services Inc., with an aggregate market value of $15,000, to be sold on or about 11/17/2025 on the NYSE. The securities were acquired on 11/17/2025 as an employee benefit, with the purchase price paid in cash. The filing also notes that 175,974,228 common shares were outstanding, providing context for the size of the planned sale.
Hyliion Holdings (HYLN) has a Form 144 notice indicating a planned sale of 159,776 shares of common stock through UBS Financial Services Inc. on the NYSE. The shares have an aggregate market value of 265,000, versus 175,974,228 common shares outstanding. The securities are reported as acquired on 11/17/2025 via an employee benefit transaction from Hyliion Holdings, with payment described as cash. The person signing the notice represents that they are not aware of undisclosed material adverse information about Hyliion’s current or prospective operations.
Hyliion Holdings insider Cheri Lantz has filed a Form 144 indicating an intention to sell 25,218 common shares through UBS Financial Services on the NYSE. The shares have an indicated aggregate market value of $41,861.88, compared with 175,974,228 common shares outstanding. The securities were acquired on 09/15/2025 as an employee benefit from Hyliion Holdings and paid for in cash on the same date. Over the past three months, Lantz previously sold 2,529 common shares for gross proceeds of $4,037. By signing the notice, the seller represents that they are not aware of undisclosed material adverse information about Hyliion’s current or prospective operations.
Hyliion Holdings (HYLN) reported an insider transaction by its Chief Accounting Officer. On 11/12/2025, 1,264 shares of common stock were disposed at $1.9 under code “F,” indicating shares withheld to satisfy taxes from restricted stock unit vesting. After this tax-withholding event, the officer beneficially owned 228,692 shares, held directly.