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 (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.
Hyliion Holdings (HYLN) reported Q3 2025 results. Revenue was $759 thousand from research and development services, reflecting new U.S. government contracts. The company posted a net loss of $13.3 million, or $0.08 per share, as operating expenses reached $15.3 million and interest income was $2.0 million.
Hyliion ended the quarter with cash and cash equivalents of $17.9 million and total investments of $146.9 million, supporting total stockholders’ equity of $203.9 million. Management states these resources are sufficient to execute its strategy over the next twelve months. The company continues winding down its powertrain business, with completion expected in the fourth quarter of fiscal 2025.
Growth is tied to the KARNO Power Module and federal R&D work. The Navy’s Office of Naval Research awarded contracts up to $16.0 million (modified in March 2025) and an additional Phase II up to $1.5 million in July 2025. Remaining amounts that may be recognized under these contracts were up to $14.4 million as of September 30, 2025, expected primarily in 2025 and 2026.
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.
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