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. filed a Form 8-K to report that it issued a press release with certain financial and other results for the quarter ended September 30, 2025. The company furnished the full text of this press release as Exhibit 99.1, allowing readers to see the detailed quarterly figures and commentary there. The Form 8-K also clarifies that this information is being furnished, not filed, which affects how it is treated under securities laws and in other company filings.
Hyliion Holdings Corp. (HYLN) CFO Jon Panzer filed a Form 4 reporting a routine tax-withholding transaction tied to RSU vesting. On 11/08/2025, 1,704 shares of common stock were withheld under code F at a price of $2.12 per share to satisfy tax obligations. After this event, Panzer beneficially owned 906,857 shares, held directly.
Hyliion Holdings Corp. (HYLN) reported an insider administrative transaction. The company’s Chief Accounting Officer filed a Form 4 showing 1,577 shares of common stock were withheld on 11/06/2025 at $2.08 per share to satisfy taxes from vesting and distribution of restricted stock units (transaction code F).
After this withholding, the officer directly beneficially owns 229,956 shares of Hyliion common stock.
Hyliion Holdings Corp. disclosed an amended Schedule 13G/A showing that BlackRock, Inc. beneficially owns 8,362,746 shares of Hyliion common stock, representing 4.8% of the class as of September 30, 2025.
BlackRock reports sole voting power over 8,129,218 shares and sole dispositive power over 8,362,746 shares. The filing states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.
Insider stock sale to cover taxes: Jose Miguel Oxholm, Chief Legal & Compliance Officer of Hyliion Holdings Corp. (HYLN), disposed of 3,357 shares of common stock at $1.60 per share as part of tax withholding tied to the vesting and distribution of restricted stock units. After this transaction he beneficially owns 797,582 shares of Hyliion stock. The filing identifies the sale as occurring in connection with satisfying a tax liability from equity vesting rather than an open-market investment decision. No derivative transactions or other securities actions were reported.
Cheri Lantz, Chief Strategy Officer at Hyliion Holdings Corp. (HYLN), reported a sale of 2,529 shares of Hyliion common stock on 09/02/2025 at a price of $1.60 per share. The filing states the shares were sold to satisfy a tax liability arising from the vesting and distribution of restricted stock units. After the transaction, Ms. Lantz beneficially owns 780,273 shares, reported as direct ownership.
The Form 4 shows a routine, non-derivative disposition by an officer that the filer explains as a tax-related sale rather than a directional trade. The sale represented a small fraction of the reported post-transaction holdings, and the filing is signed and dated 09/02/2025.
Jon Panzer, Chief Financial Officer of Hyliion Holdings Corp. (HYLN), reported a transaction on 08/28/2025 that reflects withholding of shares to cover taxes from restricted stock unit vesting. The Form 4 shows 2,435 shares of Hyliion common stock were disposed of at a price of $1.72 per share under code F(1), and the filing explains these shares were withheld to pay a tax liability related to the vesting and distribution of restricted stock units. After the withholding, Mr. Panzer beneficially owns 908,561 shares directly. The form is signed by the reporting person on 08/29/2025.
Greg Standley, Chief Accounting Officer of Hyliion Holdings Corp. (HYLN), reported a Form 4 disclosing a small disposition related to restricted stock unit tax withholding. On 08/27/2025 he disposed of 519 shares of Hyliion common stock at $1.69 per share. The filing states the shares were withheld to satisfy a tax liability arising from the vesting and distribution of restricted stock units. After the transaction, Mr. Standley beneficially owned 231,533 shares, held directly. The Form 4 is a routine insider reporting of a tax-withholding disposition rather than a voluntary sale for cash.
Joshua T. Mook, Chief Technology Officer of Hyliion Holdings Corp. (HYLN), reported a non-derivative disposition of common stock on 08/27/2025. The filing shows 1,361 shares were disposed of at $1.69 per share, leaving the reporting person with 519,688 shares beneficially owned after the transaction. The explanatory note states the shares were withheld to satisfy a tax liability related to the vesting and distribution of restricted stock units. The Form 4 is signed by Joshua T. Mook on 08/29/2025 and identifies the transaction as routine withholding for taxes rather than an open-market sale.
Insider sale by Hyliion Holdings Corp. officer Jose Miguel Oxholm, listed as Chief Legal & Compliance Officer, reported a sale of 12,573 shares of Hyliion common stock on 08/25/2025 at a reported price of $1.77 per share. After the transaction, Oxholm beneficially owned 800,939 shares, reported as direct ownership.
The filing explains the shares were sold to pay a tax liability arising from the vesting and distribution of restricted stock units. The Form 4 is signed by Oxholm and filed as an individual report by one reporting person.