Browse the latest SEC filings and forms submitted by Hyliion Holdings Corp. (HYLN). Access annual reports, quarterly statements, and other official disclosures.
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Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| 4 | March 10, 2026 | FORM 4 | View Document |
| EFFECT | March 5, 2026 | - | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 4 | March 4, 2026 | FORM 4 | View Document |
| 10-K | Feb. 25, 2026 | 10-K | View Document |
| 8-K | Feb. 25, 2026 | 8-K | View Document |
| S-3 | Feb. 25, 2026 | REGISTRATION STATEMENT | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Feb. 13, 2026 | FORM 4 | View Document |
| 4 | Dec. 19, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 4 | Dec. 15, 2025 | FORM 4 | View Document |
| 144 | Dec. 12, 2025 | - | View Document |
| 144 | Dec. 12, 2025 | - | View Document |
| 144 | Dec. 12, 2025 | - | View Document |
| 144 | Dec. 12, 2025 | - | View Document |
| 144 | Dec. 12, 2025 | - | View Document |
| 144 | Dec. 3, 2025 | - | View Document |
| 4 | Dec. 3, 2025 | FORM 4 | View Document |
| 4 | Dec. 1, 2025 | FORM 4 | View Document |
| 4 | Dec. 1, 2025 | FORM 4 | View Document |
| 4 | Dec. 1, 2025 | FORM 4 | View Document |
| 4 | Nov. 18, 2025 | FORM 4 | View Document |
| 4 | Nov. 18, 2025 | FORM 4 | View Document |
| 4 | Nov. 18, 2025 | FORM 4 | View Document |
| 4 | Nov. 18, 2025 | FORM 4 | View Document |
| 4/A | Nov. 18, 2025 | FORM 4/A | View Document |
| 4/A | Nov. 18, 2025 | FORM 4/A | View Document |
| 4/A | Nov. 18, 2025 | FORM 4/A | View Document |
| 4/A | Nov. 17, 2025 | FORM 4/A | View Document |
| 4 | Nov. 17, 2025 | FORM 4 | View Document |
| 4 | Nov. 17, 2025 | FORM 4 | View Document |
| 4 | Nov. 17, 2025 | FORM 4 | View Document |
| 144 | Nov. 17, 2025 | - | View Document |
| 144 | Nov. 17, 2025 | - | View Document |
| 144 | Nov. 17, 2025 | - | View Document |
| 144 | Nov. 17, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | FORM 4 | View Document |
| 8-K | Nov. 12, 2025 | 8-K | View Document |
| 10-Q | Nov. 12, 2025 | 10-Q | View Document |
| 4 | Nov. 10, 2025 | FORM 4 | View Document |
| 4 | Nov. 6, 2025 | FORM 4 | View Document |
| 4 | Sept. 2, 2025 | FORM 4 | View Document |
| 4 | Sept. 2, 2025 | FORM 4 | View Document |
| 4 | Aug. 29, 2025 | FORM 4 | View Document |
| 4 | Aug. 29, 2025 | FORM 4 | View Document |
| 4 | Aug. 29, 2025 | FORM 4 | View Document |
| 4 | Aug. 25, 2025 | FORM 4 | View Document |
| 4 | Aug. 25, 2025 | FORM 4 | View Document |
| 4 | Aug. 25, 2025 | FORM 4 | View Document |
| 4 | Aug. 25, 2025 | FORM 4 | View Document |
| 4 | Aug. 21, 2025 | FORM 4 | View Document |
| 4 | Aug. 14, 2025 | FORM 4 | View Document |
| 4 | Aug. 14, 2025 | FORM 4 | View Document |
| 4 | Aug. 14, 2025 | FORM 4 | View Document |
| 8-K | Aug. 12, 2025 | 8-K | View Document |
| 10-Q | Aug. 12, 2025 | 10-Q | View Document |
| 4 | Aug. 8, 2025 | FORM 4 | View Document |
| 4 | Aug. 8, 2025 | FORM 4 | View Document |
| SD | May 30, 2025 | SPECIALIZED DISCLOSURE REPORT | View Document |
| 4 | May 28, 2025 | FORM 4 | View Document |
| 4 | May 28, 2025 | FORM 4 | View Document |
| 4 | May 28, 2025 | FORM 4 | View Document |
| 4 | May 28, 2025 | FORM 4 | View Document |
| 4 | May 28, 2025 | FORM 4 | View Document |
| 4 | May 27, 2025 | FORM 4 | View Document |
| 4 | May 27, 2025 | FORM 4 | View Document |
| 4 | May 27, 2025 | FORM 4 | View Document |
| 8-K | May 21, 2025 | CURRENT REPORT | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 4 | May 14, 2025 | FORM 4 | View Document |
| 10-Q | May 13, 2025 | 10-Q | View Document |
| 8-K | May 13, 2025 | 8-K | View Document |
| 4 | May 8, 2025 | FORM 4 | View Document |
| DEF 14A | April 8, 2025 | DEF 14A | View Document |
| 4 | March 26, 2025 | FORM 4 | View Document |
| 4 | March 26, 2025 | FORM 4 | View Document |
| 4 | March 26, 2025 | FORM 4 | View Document |
| 4 | March 18, 2025 | FORM 4 | View Document |
| 4 | March 6, 2025 | FORM 4 | View Document |
| 4 | March 3, 2025 | FORM 4 | View Document |
| 4 | March 3, 2025 | FORM 4 | View Document |
| 4 | March 3, 2025 | FORM 4 | View Document |
| 4 | March 3, 2025 | FORM 4 | View Document |
| 4 | March 3, 2025 | FORM 4 | View Document |
| 4 | Feb. 27, 2025 | FORM 4 | View Document |
| 4 | Feb. 27, 2025 | FORM 4 | View Document |
| 8-K | Feb. 25, 2025 | 8-K | View Document |
| 10-K | Feb. 25, 2025 | 10-K | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 20, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 13, 2025 | FORM 4 | View Document |
| 4 | Feb. 10, 2025 | FORM 4 | View Document |
| 4 | Dec. 27, 2024 | FORM 4 | View Document |
| 4 | Dec. 27, 2024 | FORM 4 | View Document |
| 4 | Dec. 19, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 12, 2024 | FORM 4 | View Document |
| 4 | Dec. 2, 2024 | FORM 4 | View Document |
| 4 | Dec. 2, 2024 | FORM 4 | View Document |
| 4 | Nov. 29, 2024 | FORM 4 | View Document |
| 4 | Nov. 29, 2024 | FORM 4 | View Document |
| 4 | Nov. 29, 2024 | FORM 4 | View Document |
| 4 | Nov. 29, 2024 | FORM 4 | View Document |
| 4 | Nov. 22, 2024 | FORM 4 | View Document |
| 4 | Nov. 20, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 4 | Nov. 18, 2024 | FORM 4 | View Document |
| 25 | Nov. 15, 2024 | FORM 25 | View Document |
| 8-K | Nov. 14, 2024 | 8-K | View Document |
| 10-Q | Nov. 14, 2024 | 10-Q | View Document |
| 4 | Nov. 8, 2024 | FORM 4 | View Document |
| 8-A12B | Nov. 6, 2024 | FOR REGISTRATION OF CERTAIN CLASSES | View Document |
| CERT | Nov. 6, 2024 | NYSE AMERICAN CERTIFICATION | View Document |
| 8-K | Nov. 5, 2024 | 8-K | View Document |
| 4 | Sept. 27, 2024 | FORM 4 | View Document |
| 4 | Sept. 27, 2024 | FORM 4 | View Document |
| 4 | Sept. 18, 2024 | FORM 4 | View Document |
| 4 | Sept. 11, 2024 | FORM 4 | View Document |
| 4 | Sept. 3, 2024 | FORM 4 | View Document |
| 4 | Sept. 3, 2024 | FORM 4 | View Document |
| 4 | Aug. 28, 2024 | FORM 4 | View Document |
| 4 | Aug. 28, 2024 | FORM 4 | View Document |
| 4 | Aug. 28, 2024 | FORM 4 | View Document |
| 4 | Aug. 28, 2024 | FORM 4 | View Document |
| 4 | Aug. 28, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 13, 2024 | FORM 4 | View Document |
| 4 | Aug. 8, 2024 | FORM 4 | View Document |
| 4 | Aug. 8, 2024 | FORM 4 | View Document |
| 8-K | Aug. 6, 2024 | 8-K | View Document |
| S-8 | Aug. 6, 2024 | REGISTRATION STATEMENT | View Document |
| 10-Q | Aug. 6, 2024 | 10-Q | View Document |
| 4 | June 27, 2024 | FORM 4 | View Document |
| 4 | June 27, 2024 | FORM 4 | View Document |
| 4 | June 20, 2024 | FORM 4 | View Document |
| 4 | June 17, 2024 | FORM 4 | View Document |
| 4 | June 3, 2024 | FORM 4 | View Document |
| 4 | June 3, 2024 | FORM 4 | View Document |
| SD | May 30, 2024 | SPECIALIZED DISCLOSURE REPORT | View Document |
| 4 | May 28, 2024 | FORM 4 | View Document |
| 4 | May 28, 2024 | FORM 4 | View Document |
| 4 | May 28, 2024 | FORM 4 | View Document |
| 4 | May 28, 2024 | FORM 4 | View Document |
| 4 | May 28, 2024 | FORM 4 | View Document |
| 8-K | May 23, 2024 | 8-K | View Document |
| DEFA14A | May 15, 2024 | DEFA14A | View Document |
| 4 | May 13, 2024 | FORM 4 | View Document |
| 144 | May 9, 2024 | - | View Document |
| 10-Q | May 1, 2024 | 10-Q | View Document |
| 8-K | May 1, 2024 | 8-K | View Document |
| DEF 14A | April 10, 2024 | DEF 14A | View Document |
| 8-K | April 4, 2024 | 8-K | View Document |
| 4 | March 27, 2024 | FORM 4 | View Document |
| 4 | March 27, 2024 | FORM 4 | View Document |
| 4 | March 27, 2024 | FORM 4 | View Document |
| 4 | March 18, 2024 | FORM 4 | View Document |
| 144 | March 8, 2024 | - | View Document |
| 144 | March 7, 2024 | - | View Document |
| 8-K | March 4, 2024 | 8-K | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 4 | Feb. 29, 2024 | FORM 4 | View Document |
| 144 | Feb. 21, 2024 | - | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 3 | Feb. 15, 2024 | FORM 3 | View Document |
| 3 | Feb. 15, 2024 | FORM 3 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 15, 2024 | FORM 4 | View Document |
| 4 | Feb. 14, 2024 | FORM 4 | View Document |
| SC 13G/A | Feb. 13, 2024 | SCHEDULE 13G/A | View Document |
| 8-K | Feb. 13, 2024 | 8-K | View Document |
| 10-K | Feb. 13, 2024 | 10-K | View Document |
| 8-K | Feb. 13, 2024 | 8-K | View Document |
| 4 | Feb. 9, 2024 | FORM 4 | View Document |
| SC 13G/A | Jan. 31, 2024 | - | View Document |
| 4 | Dec. 27, 2023 | FORM 4 | View Document |
| 4 | Dec. 27, 2023 | FORM 4 | View Document |
| 8-K | Dec. 20, 2023 | 8-K | View Document |
| 4 | Dec. 18, 2023 | FORM 4 | View Document |
| 4 | Dec. 18, 2023 | FORM 4 | View Document |
| 4 | Dec. 1, 2023 | FORM 4 | View Document |
| 4 | Dec. 1, 2023 | FORM 4 | View Document |
| 4 | Nov. 21, 2023 | FORM 4 | View Document |
| 4 | Nov. 17, 2023 | FORM 4 | View Document |
| 4 | Nov. 17, 2023 | FORM 4 | View Document |
| 4 | Nov. 15, 2023 | FORM 4 | View Document |
| 4 | Nov. 15, 2023 | FORM 4 | View Document |
| 4 | Nov. 15, 2023 | FORM 4 | View Document |
| 4 | Nov. 15, 2023 | FORM 4 | View Document |
| 4 | Nov. 15, 2023 | FORM 4 | View Document |
| 8-K | Nov. 8, 2023 | 8-K | View Document |
| 10-Q | Nov. 8, 2023 | 10-Q | View Document |
| 8-K | Oct. 10, 2023 | 8-K | View Document |
| 4 | Sept. 27, 2023 | FORM 4 | View Document |
| 4 | Sept. 27, 2023 | FORM 4 | View Document |
| 4 | Sept. 25, 2023 | FORM 4 | View Document |
| 4 | Sept. 22, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 10-Q | Aug. 9, 2023 | 10-Q | View Document |
| 8-K | Aug. 9, 2023 | 8-K | View Document |
| 4 | June 28, 2023 | FORM 4 | View Document |
| 4 | June 28, 2023 | FORM 4 | View Document |
| 8-K | June 27, 2023 | CURRENT REPORT | View Document |
| 4 | June 22, 2023 | FORM 4 | View Document |
| 4 | June 1, 2023 | FORM 4 | View Document |
| 4 | June 1, 2023 | FORM 4 | View Document |
| 4 | June 1, 2023 | FORM 4 | View Document |
| SD | May 30, 2023 | SPECIALIZED DISCLOSURE REPORT | View Document |
| 8-K | May 25, 2023 | 8-K | View Document |
| 8-K | May 9, 2023 | 8-K | View Document |
| 10-Q | May 9, 2023 | 10-Q | View Document |
| DEFA14A | April 10, 2023 | DEFA14A | View Document |
| DEF 14A | April 7, 2023 | DEF 14A | View Document |
| ARS | April 7, 2023 | FORM ARS | View Document |
| 4 | March 28, 2023 | - | View Document |
| 4 | March 28, 2023 | - | View Document |
| 4 | March 28, 2023 | - | View Document |
| 4 | March 21, 2023 | PRIMARY DOCUMENT | View Document |
| 4 | March 21, 2023 | PRIMARY DOCUMENT | View Document |
| 4 | March 21, 2023 | PRIMARY DOCUMENT | View Document |
| 4 | March 21, 2023 | PRIMARY DOCUMENT | View Document |
| 4 | March 21, 2023 | PRIMARY DOCUMENT | View Document |
| 3 | March 17, 2023 | - | View Document |
| 8-K | March 17, 2023 | CURRENT REPORT | View Document |
| 3 | March 17, 2023 | - | View Document |
| 3 | March 17, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 15, 2023 | - | View Document |
| 4 | March 8, 2023 | FORM 4 | View Document |
| 4 | March 8, 2023 | FORM 4 | View Document |
| 4 | March 8, 2023 | FORM 4 | View Document |
| 4 | March 8, 2023 | FORM 4 | View Document |
| 4 | March 8, 2023 | FORM 4 | View Document |
| 8-K | March 8, 2023 | CURRENT REPORT | View Document |
| 4 | March 2, 2023 | FORM 4 | View Document |
| 4 | March 2, 2023 | FORM 4 | View Document |
| 4 | March 2, 2023 | FORM 4 | View Document |
| 4 | March 2, 2023 | FORM 4 | View Document |
| 4 | March 2, 2023 | FORM 4 | View Document |
| 8-K | Feb. 28, 2023 | 8-K | View Document |
| 10-K | Feb. 28, 2023 | 10-K | View Document |
| 8-K | Feb. 21, 2023 | 8-K | View Document |
| 8-K | Feb. 14, 2023 | 8-K | View Document |
| SC 13G/A | Feb. 9, 2023 | SCHEDULE 13G/A | View Document |
| SC 13G | Feb. 3, 2023 | - | View Document |
| 8-K | Dec. 21, 2022 | 8-K | View Document |
| 4 | Nov. 21, 2022 | - | View Document |
| 4 | Nov. 18, 2022 | - | View Document |
| 4 | Nov. 18, 2022 | - | View Document |
| 4 | Nov. 16, 2022 | - | View Document |
| 10-Q | Nov. 9, 2022 | 10-Q | View Document |
| 4 | Nov. 9, 2022 | FORM 4 | View Document |
| 8-K | Nov. 9, 2022 | 8-K | View Document |
| 8-K | Sept. 27, 2022 | CURRENT REPORT | View Document |
| 4 | Sept. 19, 2022 | FORM 4 | View Document |
| 3 | Sept. 19, 2022 | FORM 3 | View Document |
| 8-K | Sept. 12, 2022 | CURRENT REPORT | View Document |
| 8-K | Aug. 25, 2022 | CURRENT REPORT | View Document |
| 8-K | Aug. 9, 2022 | 8-K | View Document |
| 10-Q | Aug. 9, 2022 | 10-Q | View Document |
| 4 | June 27, 2022 | FORM 4 | View Document |
| 4/A | June 27, 2022 | FORM 4/A | View Document |
| 4 | June 27, 2022 | FORM 4 | View Document |
| SD | May 27, 2022 | SPECIALIZED DISCLOSURE REPORT | View Document |
| 8-K | May 20, 2022 | CURRENT REPORT | View Document |
| 4 | May 20, 2022 | - | View Document |
| 8-K | May 13, 2022 | 8-K | View Document |
| 10-Q | May 9, 2022 | 10-Q | View Document |
| 8-K | May 9, 2022 | 8-K | View Document |
| SC 13G | May 9, 2022 | - | View Document |
| 4 | April 28, 2022 | FORM 4 | View Document |
| DEFA14A | March 25, 2022 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEF 14A | March 25, 2022 | DEFINITIVE PROXY STATEMENT | View Document |
| 3 | March 3, 2022 | - | View Document |
| 4 | March 3, 2022 | - | View Document |
| 4 | March 2, 2022 | OWNERSHIP DOCUMENT | View Document |
| 3 | March 2, 2022 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 10-K | Feb. 24, 2022 | 10-K | View Document |
| 8-K | Feb. 24, 2022 | 8-K | View Document |
| SC 13G | Feb. 10, 2022 | SCHEDULE 13G | View Document |
| 3 | Feb. 7, 2022 | - | View Document |
| SC 13G | Feb. 4, 2022 | - | View Document |
| 4 | Feb. 4, 2022 | - | View Document |
| 4 | Feb. 3, 2022 | - | View Document |
| SC 13G/A | Feb. 2, 2022 | SC 13G/A | View Document |
| 8-K | Feb. 1, 2022 | CURRENT REPORT | View Document |
| SC 13G/A | Feb. 1, 2022 | SC 13G/A | View Document |
| 424B3 | Jan. 28, 2022 | PROSPECTUS SUPPLEMENT | View Document |
| 424B3 | Jan. 5, 2022 | PROSPECTUS | View Document |
| EFFECT | Jan. 4, 2022 | - | View Document |
| POS AM | Dec. 30, 2021 | POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-1 | View Document |
| 4 | Dec. 20, 2021 | - | View Document |
| 4 | Dec. 10, 2021 | - | View Document |
| 4 | Dec. 9, 2021 | - | View Document |
| 4 | Dec. 7, 2021 | - | View Document |
| 4 | Dec. 7, 2021 | - | View Document |
| SC 13D/A | Dec. 6, 2021 | - | View Document |
| 4 | Dec. 6, 2021 | - | View Document |
| 424B3 | Nov. 10, 2021 | 424B3 | View Document |
| 8-K | Nov. 10, 2021 | 8-K | View Document |
| 10-Q | Nov. 10, 2021 | 10-Q | View Document |
| 4 | Nov. 4, 2021 | - | View Document |
| 4 | Oct. 22, 2021 | - | View Document |
| 4 | Oct. 20, 2021 | OWNERSHIP DOCUMENT | View Document |
| 424B3 | Oct. 14, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 8-K | Oct. 14, 2021 | CURRENT REPORT | View Document |
| 4 | Oct. 12, 2021 | - | View Document |
| 4 | Oct. 12, 2021 | - | View Document |
| 4 | Oct. 5, 2021 | - | View Document |
| 4 | Oct. 5, 2021 | - | View Document |
| 4 | Oct. 5, 2021 | - | View Document |
| 4 | Sept. 24, 2021 | - | View Document |
| SC 13D/A | Sept. 22, 2021 | - | View Document |
| 4 | Sept. 22, 2021 | - | View Document |
| 4 | Sept. 21, 2021 | - | View Document |
| 3 | Aug. 30, 2021 | FORM 3 | View Document |
| 4 | Aug. 27, 2021 | FORM 4 | View Document |
| 424B3 | Aug. 26, 2021 | 424B3 | View Document |
| 8-K | Aug. 26, 2021 | 8-K | View Document |
| 3 | Aug. 24, 2021 | FORM 3 | View Document |
| 424B3 | Aug. 24, 2021 | 424B3 | View Document |
| 8-K | Aug. 24, 2021 | 8-K | View Document |
| 424B3 | Aug. 17, 2021 | 424B3 | View Document |
| 8-K | Aug. 16, 2021 | 8-K | View Document |
| 3 | Aug. 16, 2021 | FORM 3 | View Document |
| 10-Q/A | Aug. 12, 2021 | 10-Q/A | View Document |
| 424B3 | Aug. 12, 2021 | 424B3 | View Document |
| 424B3 | Aug. 11, 2021 | 424B3 | View Document |
| 8-K | Aug. 11, 2021 | 8-K | View Document |
| 10-Q | Aug. 11, 2021 | 10-Q | View Document |
| 4 | Aug. 4, 2021 | FORM 4 | View Document |
| 4 | Aug. 2, 2021 | FORM 4 | View Document |
| 4 | July 30, 2021 | FORM 4 | View Document |
| 424B3 | July 15, 2021 | PROSPECTUS | View Document |
| EFFECT | July 14, 2021 | - | View Document |
| POS AM | July 9, 2021 | POST-EFFECTIVE AMENDMENT NO. 1 TO REGISTRATION STATEMENT | View Document |
| 4/A | July 7, 2021 | FORM 4/A | View Document |
| 4 | July 2, 2021 | FORM 4 | View Document |
| 4 | June 29, 2021 | FORM 4 | View Document |
| 8-K | June 14, 2021 | 8-K | View Document |
| SC 13D/A | June 7, 2021 | AMENDMENT NO. 2 TO SCHEDULE 13D | View Document |
| 4 | June 4, 2021 | FORM 4 | View Document |
| 4 | June 3, 2021 | FORM 4 | View Document |
| SD | June 1, 2021 | SD | View Document |
| 4 | May 26, 2021 | FORM 4 | View Document |
| 4 | May 25, 2021 | FORM 4 | View Document |
| 424B3 | May 24, 2021 | 424B3 | View Document |
| SC 13D/A | May 24, 2021 | - | View Document |
| 4 | May 21, 2021 | - | View Document |
| 4 | May 21, 2021 | - | View Document |
| 4 | May 20, 2021 | - | View Document |
| 10-Q | May 17, 2021 | 10-Q | View Document |
| 424B3 | May 17, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 424B3 | May 17, 2021 | 424B3 | View Document |
| 10-K/A | May 17, 2021 | AMENDMENT NO. 1 TO FORM 10-K | View Document |
| 8-K | May 12, 2021 | CURRENT REPORT | View Document |
| 424B3 | May 11, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 8-K | May 11, 2021 | CURRENT REPORT | View Document |
| 424B3 | May 11, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 424B3 | April 30, 2021 | 424B3 | View Document |
| DEFA14A | April 29, 2021 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| 4 | April 29, 2021 | - | View Document |
| DEF 14A | April 29, 2021 | DEFINITIVE PROXY STATEMENT | View Document |
| 8-K | April 7, 2021 | CURRENT REPORT | View Document |
| 8-K | April 1, 2021 | CURRENT REPORT | View Document |
| 424B3 | March 31, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 4 | March 30, 2021 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 30, 2021 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 30, 2021 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 30, 2021 | - | View Document |
| 4 | March 30, 2021 | - | View Document |
| 4 | March 30, 2021 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 30, 2021 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 30, 2021 | - | View Document |
| 4 | March 30, 2021 | - | View Document |
| 4 | March 4, 2021 | - | View Document |
| SC 13G/A | March 2, 2021 | SC 13G/A | View Document |
| 424B3 | Feb. 26, 2021 | PROSPECTUS SUPPLEMENT | View Document |
| 10-K | Feb. 26, 2021 | ANNUAL REPORT | View Document |
| 8-K | Feb. 24, 2021 | CURRENT REPORT | View Document |
| SC 13G/A | Feb. 16, 2021 | SCHEDULE 13G HOLDINGS REPORT AMENDMENT | View Document |
| SC 13G | Feb. 16, 2021 | - | View Document |
| SC 13G/A | Feb. 16, 2021 | AMENDMENT NO. 2 TO SCHEDULE 13G | View Document |
| SC 13G/A | Feb. 12, 2021 | KARPUS INVESTMENT MGT / HYLIION HOLDINGS (FKA TORTOISE ACQUISITION CORP) - SCHED | View Document |
| SC 13G/A | Feb. 11, 2021 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| SC 13G/A | Feb. 11, 2021 | HYLIION HOLDINGS CORP. | View Document |
| 3 | Feb. 9, 2021 | FORM 3 SUBMISSION | View Document |
| 3 | Jan. 27, 2021 | FORM 3 SUBMISSION | View Document |
| 8-K | Jan. 22, 2021 | CURRENT REPORT | View Document |
| 4 | Jan. 20, 2021 | FORM 4 SUBMISSION | View Document |
| 8-K | Jan. 12, 2021 | CURRENT REPORT | View Document |
| 25-NSE | Dec. 30, 2020 | - | View Document |
| 4 | Dec. 29, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Dec. 28, 2020 | FORM 4 SUBMISSION | View Document |
| S-8 | Dec. 14, 2020 | REGISTRATION STATEMENT | View Document |
| 8-K | Dec. 7, 2020 | CURRENT REPORT | View Document |
| 3/A | Dec. 2, 2020 | FORM 3/A SUBMISSION | View Document |
| 8-K | Nov. 30, 2020 | CURRENT REPORT | View Document |
| 424B3 | Nov. 27, 2020 | - | View Document |
| 3 | Nov. 27, 2020 | FORM 3 SUBMISSION | View Document |
| EFFECT | Nov. 27, 2020 | - | View Document |
| CORRESP | Nov. 24, 2020 | - | View Document |
| S-1/A | Nov. 23, 2020 | REGISTRATION STATEMENT | View Document |
| CORRESP | Nov. 23, 2020 | - | View Document |
| CORRESP | Nov. 20, 2020 | - | View Document |
| UPLOAD | Nov. 13, 2020 | - | View Document |
| 10-Q | Nov. 12, 2020 | QUARTERLY REPORT | View Document |
| 8-K/A | Nov. 12, 2020 | AMENDMENT NO.2 TO CURRENT REPORT | View Document |
| 8-K | Nov. 12, 2020 | CURRENT REPORT | View Document |
| 8-K | Oct. 29, 2020 | CURRENT REPORT | View Document |
| S-1 | Oct. 23, 2020 | REGISTRATION STATEMENT | View Document |
| SC 13G | Oct. 21, 2020 | SC 13G | View Document |
| SC 13D | Oct. 13, 2020 | - | View Document |
| SC 13G | Oct. 13, 2020 | SC 13G | View Document |
| SC 13D | Oct. 9, 2020 | SC 13D | View Document |
| 8-K/A | Oct. 7, 2020 | AMENDMENT NO. 1 TO FORM 8-K | View Document |
| 3 | Oct. 7, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 7, 2020 | FORM 3 SUBMISSION | View Document |
| 8-K | Oct. 7, 2020 | CURRENT REPORT | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 5, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 5, 2020 | - | View Document |
| 4 | Oct. 5, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | FORM 4 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 3 | Oct. 5, 2020 | FORM 3 SUBMISSION | View Document |
| 4 | Oct. 5, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 5, 2020 | - | View Document |
| 4 | Oct. 5, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 5, 2020 | - | View Document |
| 25-NSE | Oct. 2, 2020 | - | View Document |
| 8-K | Oct. 1, 2020 | CURRENT REPORT | View Document |
| 8-K | Sept. 28, 2020 | CURRENT REPORT | View Document |
| DEFA14A | Sept. 28, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 28, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 28, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 25, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 24, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| 8-K | Sept. 24, 2020 | CURRENT REPORT | View Document |
| DEFA14A | Sept. 21, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 17, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 15, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 10, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| DEFA14A | Sept. 10, 2020 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| UPLOAD | Sept. 8, 2020 | - | View Document |
| DEFM14A | Sept. 8, 2020 | - | View Document |
| PRER14A | Aug. 31, 2020 | AMENDMENT NO. 2 TO PRELIMINARY PROXY STATEMENT | View Document |
| CORRESP | Aug. 31, 2020 | - | View Document |
| UPLOAD | Aug. 26, 2020 | - | View Document |
| PRER14A | Aug. 14, 2020 | REVISED PRELIMINARY PROXY STATEMENT | View Document |
| CORRESP | Aug. 13, 2020 | - | View Document |
| 10-Q | Aug. 6, 2020 | QUARTERLY REPORT | View Document |
| UPLOAD | Aug. 6, 2020 | - | View Document |
| DEFA14A | July 30, 2020 | SOLICITING MATERIAL UNDER 240.14A-12 | View Document |
| DEFA14A | July 29, 2020 | SOLICITING MATERIAL UNDER 240.14A-12 | View Document |
| DEFA14A | July 21, 2020 | SOLICITING MATERIAL UNDER 240.14A-12 | View Document |
| SC 13G/A | July 10, 2020 | FORM SC 13G/A | View Document |
| PREM14A | July 10, 2020 | FORM PREM14A | View Document |
| DEFA14A | June 25, 2020 | SOLICITING MATERIAL UNDER 240.14A-12 | View Document |
| 4 | June 23, 2020 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 8-K | June 19, 2020 | CURRENT REPORT | View Document |
| DEFA14A | June 19, 2020 | CURRENT REPORT | View Document |
| 10-Q | May 7, 2020 | QUARTERLY REPORT | View Document |
| SC 13G | April 10, 2020 | FORM SC 13G | View Document |
| 3 | April 3, 2020 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 10-K | March 23, 2020 | ANNUAL REPORT | View Document |
| SC 13G/A | Feb. 18, 2020 | AQR CAPITAL MANAGEMENT LLC | View Document |
| SC 13G/A | Feb. 14, 2020 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| SC 13G | Feb. 14, 2020 | - | View Document |
| SC 13G/A | Feb. 14, 2020 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| SC 13G | Feb. 14, 2020 | - | View Document |
| SC 13G/A | Feb. 13, 2020 | TORTOISE ACQUISITION CORP. | View Document |
| SC 13G | Feb. 13, 2020 | SCHEDULE 13G | View Document |
| 8-K | Jan. 24, 2020 | CURRENT REPORT | View Document |
| 10-Q | Nov. 12, 2019 | QUARTERLY REPORT | View Document |
| 10-Q | Aug. 12, 2019 | QUARTERLY REPORT | View Document |
| 10-Q | May 13, 2019 | QUARTERLY REPORT | View Document |
| 4 | May 6, 2019 | - | View Document |
| 8-K | April 19, 2019 | CURRENT REPORT | View Document |
| SC 13G | March 11, 2019 | TORTOISE ACQUISITION CORP. | View Document |
| SC 13G | March 11, 2019 | TORTOISE ACQUISITION CORP. | View Document |
| SC 13G | March 11, 2019 | SC 13G | View Document |
| SC 13G | March 8, 2019 | AQR CAPITAL MANAGEMENT LLC | View Document |
| 8-K | March 8, 2019 | CURRENT REPORT | View Document |
| SC 13G | March 7, 2019 | SC 13G | View Document |
| 4 | March 6, 2019 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 6, 2019 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 6, 2019 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 6, 2019 | - | View Document |
| 4 | March 6, 2019 | - | View Document |
| 4 | March 6, 2019 | - | View Document |
| 4 | March 6, 2019 | - | View Document |
| 4 | March 6, 2019 | - | View Document |
| 4 | March 6, 2019 | - | View Document |
| 8-K | March 5, 2019 | CURRENT REPORT | View Document |
| 424B4 | March 1, 2019 | PROSPECTUS | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| EFFECT | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 8-A12B | Feb. 27, 2019 | REGISTRATION OF CERTAIN CLASSES OF SECURITIES | View Document |
| CERT | Feb. 27, 2019 | NYSE CERTIFICATION FILING-- TORTOISE ACQUISITION CORP. | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| 3 | Feb. 27, 2019 | - | View Document |
| CORRESP | Feb. 25, 2019 | - | View Document |
| CORRESP | Feb. 25, 2019 | - | View Document |
| S-1/A | Feb. 15, 2019 | AMENDMENT TO FORM S-1 | View Document |
| S-1 | Feb. 6, 2019 | REGISTRATION STATEMENT | View Document |
| DRS/A | Dec. 21, 2018 | - | View Document |
| DRSLTR | Dec. 21, 2018 | - | View Document |
| UPLOAD | Dec. 17, 2018 | - | View Document |
| DRS | Nov. 20, 2018 | - | View Document |