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 |
|---|---|---|---|
| CERT | Nyse texas certification | Sep 21, 2026 | — |
| 8-A12B | Filing | Sep 21, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| EFFECT | Filing | Mar 5, 2026 | — |
| UPLOAD | Letter from the SEC | Mar 3, 2026 | — |
| CORRESP | Letter to the SEC | Mar 2, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 25 | Form 25 | Nov 15, 2024 | — |
| CERT | Nyse american certification | Nov 6, 2024 | — |
| 8-A12B | For registration of certain classes | Nov 6, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 27, 2022 | — |
| EFFECT | Filing | Jan 4, 2022 | — |
| EFFECT | Filing | Jul 14, 2021 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| 25-NSE | Delisting notice | Dec 30, 2020 | — |
| EFFECT | Filing | Nov 27, 2020 | — |
| CORRESP | Letter to the SEC | Nov 24, 2020 | — |
| CORRESP | Letter to the SEC | Nov 23, 2020 | — |
| CORRESP | Letter to the SEC | Nov 20, 2020 | — |
| UPLOAD | Letter from the SEC | Nov 13, 2020 | — |
| 25-NSE | Delisting notice | Oct 2, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 8, 2020 | — |
| CORRESP | Letter to the SEC | Aug 31, 2020 | — |
| PRER14A | Amendment no. 2 to preliminary proxy statement | Aug 31, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 26, 2020 | — |
| PRER14A | Revised preliminary proxy statement | Aug 14, 2020 | — |
| CORRESP | Letter to the SEC | Aug 13, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 6, 2020 | — |
| EFFECT | Filing | Feb 27, 2019 | — |
| CERT | Nyse certification filing-- tortoise acquisition corp. | Feb 27, 2019 | — |
| 8-A12B | Registration of certain classes of securities | Feb 27, 2019 | — |
| CORRESP | Letter to the SEC | Feb 25, 2019 | — |
| CORRESP | Letter to the SEC | Feb 25, 2019 | — |
| DRSLTR | Filing | Dec 21, 2018 | — |
| DRS/A | Filing | Dec 21, 2018 | — |
| UPLOAD | Letter from the SEC | Dec 17, 2018 | — |
| DRS | Filing | Nov 20, 2018 | — |
Showing 39 filings. 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.