Hyliion Holdings Corp. SEC filings HYLN
Hyliion Holdings Corp. has 669 filings in SEC EDGAR's recent list, going back to Nov 20, 2018. Its latest annual report, Form 10-K, was filed on Feb 25, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 2, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Sep 22, 2026 | Sep 21, 2026 |
| 4 | Insider transaction | Aug 27, 2026 | Aug 27, 2026 |
| 4 | Insider transaction | Aug 25, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 19, 2026 |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 28, 2026 | — |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 26, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 4 | Insider transaction | Dec 3, 2025 | Dec 3, 2025 |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 27, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 26, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 17, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 17, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 17, 2025 |
| 4/A | Form 4/a | Nov 18, 2025 | Aug 25, 2025 |
| 4/A | Form 4/a | Nov 18, 2025 | Aug 25, 2025 |
| 4/A | Form 4/a | Nov 18, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 17, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 17, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 17, 2025 | Nov 13, 2025 |
| 4/A | Form 4/a | Nov 17, 2025 | Aug 25, 2025 |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 8, 2025 |
| 4 | Insider transaction | Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| 4 | Insider transaction | Sep 2, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 28, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 27, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 27, 2025 |
| 4 | Insider transaction | Aug 25, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 25, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 25, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 25, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 12, 2025 |
| 4 | Insider transaction | May 8, 2025 | May 8, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 8, 2025 |
| 4 | Insider transaction | Dec 27, 2024 | Dec 26, 2024 |
| 4 | Insider transaction | Dec 27, 2024 | Dec 26, 2024 |
| 4 | Insider transaction | Dec 19, 2024 | Dec 18, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 11, 2024 |
| 4 | Insider transaction | Dec 2, 2024 | Nov 30, 2024 |
| 4 | Insider transaction | Dec 2, 2024 | Nov 30, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 28, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 28, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 28, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 27, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 20, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 8, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Sep 27, 2024 | Sep 26, 2024 |
| 4 | Insider transaction | Sep 27, 2024 | Sep 26, 2024 |
| 4 | Insider transaction | Sep 18, 2024 | Sep 18, 2024 |
| 4 | Insider transaction | Sep 11, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 31, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 31, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 27, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 27, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 13, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Truck & Bus Bodies (SIC 3713)
- Listed as
- HYLN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Cedar Park, TX
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1759631
- Former names
- Tortoise Acquisition Corp. (until Sep 28, 2020)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.