Momentus Inc. SEC filings MNTS
Momentus Inc. has 709 filings in SEC EDGAR's recent list, going back to Aug 9, 2019. Its latest annual report, Form ARS, was filed on Apr 10, 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 Aug 25, 2026 (agreement ended). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 28, 2026 | — |
| 4 | Insider transaction | May 26, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 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/A | Primary document | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 22, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Sep 10, 2025 | Aug 1, 2025 |
| 4 | Insider transaction | Aug 22, 2025 | Aug 20, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Apr 22, 2025 |
| 3 | Initial insider ownership | Jul 3, 2025 | Mar 4, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 4 | Insider transaction | Mar 26, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 20, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 10, 2024 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 20, 2024 | — |
| 3 | Initial insider ownership | Sep 10, 2024 | Aug 30, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 28, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Aug 28, 2024 | — |
| 3 | Initial insider ownership | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 7, 2024 | — |
| 4 | Insider transaction | Dec 5, 2023 | Dec 1, 2023 |
| 4 | Insider transaction | Nov 22, 2023 | Nov 20, 2023 |
| 4 | Insider transaction | Nov 3, 2023 | Nov 1, 2023 |
| SC 13G | Ownership over 5% (passive) | Oct 17, 2023 | — |
| 4 | Insider transaction | Oct 4, 2023 | Oct 2, 2023 |
| 144 | Notice of proposed sale | Oct 2, 2023 | — |
| 4 | Insider transaction | Sep 26, 2023 | Sep 22, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 18, 2023 | — |
| 4 | Insider transaction | Sep 14, 2023 | Sep 12, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 13, 2023 | — |
| 4 | Insider transaction | Sep 11, 2023 | Sep 7, 2023 |
| 144/A | Filing | Sep 8, 2023 | — |
| 144/A | Filing | Sep 8, 2023 | — |
| 144/A | Filing | Sep 8, 2023 | — |
| 144/A | Filing | Sep 8, 2023 | — |
| 144 | Notice of proposed sale | Sep 8, 2023 | — |
| 144 | Notice of proposed sale | Sep 7, 2023 | — |
| 144 | Notice of proposed sale | Sep 7, 2023 | — |
| 144 | Notice of proposed sale | Sep 7, 2023 | — |
| 144 | Notice of proposed sale | Sep 7, 2023 | — |
| 144 | Notice of proposed sale | Sep 7, 2023 | — |
| 4 | Insider transaction | Sep 6, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 18, 2023 |
| 4 | Insider transaction | Aug 18, 2023 | Aug 17, 2023 |
| 144 | Notice of proposed sale | Aug 17, 2023 | — |
| 4 | Insider transaction | Aug 15, 2023 | Aug 12, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 12, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 12, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 12, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 12, 2023 |
| 4 | Insider transaction | Aug 2, 2023 | Aug 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 144 | Notice of proposed sale | Jul 3, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 12, 2023 | — |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 144 | Notice of proposed sale | Jun 7, 2023 | — |
| 144 | Notice of proposed sale | Jun 7, 2023 | — |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 30, 2023 |
| 4 | Insider transaction | May 2, 2023 | May 1, 2023 |
| 4 | Insider transaction | Apr 24, 2023 | Apr 20, 2023 |
| 4 | Insider transaction | Apr 6, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Apr 6, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Apr 6, 2023 | Mar 23, 2023 |
| 3 | Initial insider ownership | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Mar 23, 2023 | Mar 20, 2023 |
| 4 | Insider transaction | Mar 23, 2023 | Mar 20, 2023 |
| 4 | Insider transaction | Mar 23, 2023 | Mar 20, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 1, 2023 | — |
| 3 | Initial insider ownership | Jan 13, 2023 | Jan 7, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Dec 21, 2022 | Dec 20, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 20, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 20, 2022 |
| 4 | Insider transaction | Oct 21, 2022 | Oct 20, 2022 |
| 4 | Insider transaction | Sep 21, 2022 | Sep 20, 2022 |
| 4 | Insider transaction | Aug 23, 2022 | Aug 20, 2022 |
| 4 | Insider transaction | Aug 23, 2022 | Aug 20, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 19, 2022 | — |
| 4 | Insider transaction | Aug 16, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Jul 21, 2022 | Jul 20, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 20, 2022 |
| 4 | Insider transaction | Jun 10, 2022 | Jun 8, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 30, 2022 |
| 4 | Insider transaction | May 23, 2022 | May 20, 2022 |
| 4 | Insider transaction | Apr 21, 2022 | Apr 20, 2022 |
| 4 | Insider transaction | Mar 22, 2022 | Mar 20, 2022 |
| 4 | Insider transaction | Mar 22, 2022 | Mar 20, 2022 |
| 4 | Insider transaction | Mar 22, 2022 | Mar 20, 2022 |
| 4 | Insider transaction | Mar 22, 2022 | Mar 20, 2022 |
| 4 | Insider transaction | Mar 22, 2022 | Mar 20, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 20, 2022 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Feb 18, 2022 | Aug 12, 2021 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Feb 18, 2022 | Feb 14, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 18, 2022 | — |
| 4 | Insider transaction | Feb 16, 2022 | Feb 14, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| 4 | Insider transaction | Jan 20, 2022 | Jan 20, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 20, 2022 |
| 3 | Initial insider ownership | Jan 18, 2022 | Jan 7, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Dec 21, 2021 | Dec 20, 2021 |
| 4 | Insider transaction | Dec 21, 2021 | Dec 20, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 20, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 20, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 20, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 20, 2021 |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| SC 13D | Ownership over 5% (active) | Oct 8, 2021 | — |
| 3 | Initial insider ownership | Oct 4, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Aug 23, 2021 | Aug 12, 2021 |
| 4 | Insider transaction | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 3 | Initial insider ownership | Aug 16, 2021 | Aug 12, 2021 |
| 4 | Insider transaction | Aug 16, 2021 | Aug 12, 2021 |
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
- Guided Missiles & Space Vehicles & Parts (SIC 3760)
- Listed as
- MNTS (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Jose, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1781162
- Former names
- Stable Road Acquisition Corp. (until Aug 12, 2021)
Other Guided Missiles & Space Vehicles & Parts companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.