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 |
|---|---|---|---|
| 8-K |
Current report
Agreement ended
|
Aug 25, 2026 | Aug 21, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 8-K |
Current report
Auditor change
|
Aug 14, 2026 | Aug 11, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 25-NSE | Delisting notice | Aug 11, 2026 | — |
| 10-Q | Quarterly report | Aug 11, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Other events
|
Jun 18, 2026 | Jun 18, 2026 |
| 424B5 | Prospectus supplement | Jun 18, 2026 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jun 15, 2026 | Jun 11, 2026 |
| 424B5 | Prospectus supplement | Jun 15, 2026 | — |
| EFFECT | Filing | Jun 4, 2026 | — |
| CORRESP | Letter to the SEC | Jun 2, 2026 | — |
| S-3/A | Filing | Jun 1, 2026 | — |
| UPLOAD | Letter from the SEC | Jun 1, 2026 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
May 29, 2026 | May 26, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 28, 2026 | — |
| 4 | Insider transaction | May 26, 2026 | May 21, 2026 |
| S-3 | Shelf registration | May 26, 2026 | — |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| S-8 | Employee stock plan registration | May 22, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 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/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 | — |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 5, 2026 | May 5, 2026 |
| EFFECT | Filing | Apr 28, 2026 | — |
| CORRESP | Letter to the SEC | Apr 24, 2026 | — |
| UPLOAD | Letter from the SEC | Apr 24, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 22, 2026 | — |
| S-3 | Shelf registration | Apr 21, 2026 | — |
| 8-K |
Current report
Agreement ended
|
Apr 20, 2026 | Apr 17, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Apr 16, 2026 | Apr 14, 2026 |
| 8-K |
Current report
Other events
|
Apr 13, 2026 | Apr 13, 2026 |
| DEF 14A | Proxy statement | Apr 10, 2026 | May 19, 2026 |
| ARS | Annual report to shareholders | Apr 10, 2026 | Dec 31, 2025 |
| S-8 | Employee stock plan registration | Apr 1, 2026 | — |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| 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 |
| 8-K |
Current report
Other events
|
Feb 20, 2026 | Feb 20, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Feb 12, 2026 | Feb 6, 2026 |
| 424B5 | Prospectus supplement | Feb 9, 2026 | — |
| 424B5 | Prospectus supplement | Feb 6, 2026 | — |
| EFFECT | Filing | Feb 5, 2026 | — |
| CORRESP | Letter to the SEC | Feb 3, 2026 | — |
| S-8 | Employee stock plan registration | Feb 2, 2026 | — |
| S-3 | Shelf registration | Feb 2, 2026 | — |
| UPLOAD | Letter from the SEC | Jan 29, 2026 | — |
| DEF 14A | Proxy statement | Jan 22, 2026 | Feb 6, 2026 |
| 8-K |
Current report
Material agreement, New debt, Change to shareholder rights
|
Jan 13, 2026 | Jan 9, 2026 |
| PRE 14A | Preliminary proxy statement | Jan 12, 2026 | Jan 12, 2026 |
| DRS | Filing | Jan 12, 2026 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Jan 9, 2026 | Jan 5, 2026 |
| EFFECT | Filing | Dec 31, 2025 | — |
| DEF 14A | Proxy statement | Dec 29, 2025 | Jan 27, 2026 |
| CORRESP | Letter to the SEC | Dec 29, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Change to shareholder rights
|
Dec 29, 2025 | Dec 23, 2025 |
| S-1 | Registration statement | Dec 19, 2025 | — |
| PRE 14A | Preliminary proxy statement | Dec 15, 2025 | Dec 15, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Dec 15, 2025 | Dec 15, 2025 |
| 424B5 | Prospectus supplement | Dec 12, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Dec 12, 2025 | Dec 9, 2025 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Dec 10, 2025 | Dec 5, 2025 |
| 8-K |
Current report
Other events
|
Nov 24, 2025 | Nov 24, 2025 |
| 10-Q | Quarterly report | Nov 20, 2025 | Sep 30, 2025 |
| NT 10-Q | Filing | Nov 14, 2025 | Sep 30, 2025 |
| DEF 14A | Proxy statement | Oct 29, 2025 | Nov 24, 2025 |
| S-1 | Registration statement | Oct 27, 2025 | — |
| S-1 | Registration statement | Oct 24, 2025 | — |
| 424B5 | Prospectus supplement | Oct 20, 2025 | — |
| S-1/A | Amended registration statement | Oct 17, 2025 | — |
| PRE 14A | Preliminary proxy statement | Oct 15, 2025 | Oct 15, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Oct 15, 2025 | Oct 14, 2025 |
| 424B5 | Prospectus supplement | Oct 10, 2025 | — |
| 8-K |
Current report
Other events
|
Oct 9, 2025 | Oct 9, 2025 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Oct 6, 2025 | Sep 30, 2025 |
| CORRESP | Letter to the SEC | Oct 2, 2025 | — |
| D | Filing | Oct 2, 2025 | — |
| 8-K |
Current report
Other events
|
Oct 1, 2025 | Sep 30, 2025 |
| EFFECT | Filing | Sep 30, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Sep 29, 2025 | Sep 25, 2025 |
| CORRESP | Letter to the SEC | Sep 29, 2025 | — |
| UPLOAD | Letter from the SEC | Sep 29, 2025 | — |
| 8-K |
Current report
Material agreement
|
Sep 25, 2025 | Sep 19, 2025 |
| UPLOAD | Letter from the SEC | Sep 25, 2025 | — |
| S-3 | Shelf registration | Sep 22, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
Sep 18, 2025 | Sep 17, 2025 |
| S-1 | Registration statement | Sep 15, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Sep 11, 2025 | Sep 8, 2025 |
| 4 | Insider transaction | Sep 10, 2025 | Aug 1, 2025 |
| DEF 14A | Proxy statement | Sep 8, 2025 | Sep 17, 2025 |
| PRE 14A | Preliminary proxy statement | Aug 22, 2025 | Sep 17, 2025 |
| 424B7 | Filing | Aug 22, 2025 | — |
| 424B7 | Filing | Aug 22, 2025 | — |
| 4 | Insider transaction | Aug 22, 2025 | Aug 20, 2025 |
| 10-Q | Quarterly report | Aug 19, 2025 | Jun 30, 2025 |
| DEF 14A | Proxy statement | Aug 19, 2025 | Sep 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| NT 10-Q | Filing | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Aug 14, 2025 | Aug 13, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 6, 2025 | Aug 1, 2025 |
| PRE 14A | Preliminary proxy statement | Jul 18, 2025 | Jul 18, 2025 |
| EFFECT | Filing | Jul 9, 2025 | — |
| CORRESP | Letter to the SEC | Jul 7, 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 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jul 2, 2025 | Jun 30, 2025 |
| 424B5 | Prospectus supplement | Jul 1, 2025 | — |
| EFFECT | Filing | Jun 30, 2025 | — |
| 8-K |
Current report
Other events
|
Jun 30, 2025 | Jun 30, 2025 |
| EFFECT | Filing | Jun 27, 2025 | — |
| CORRESP | Letter to the SEC | Jun 27, 2025 | — |
| CORRESP | Letter to the SEC | Jun 26, 2025 | — |
| CORRESP | Letter to the SEC | Jun 26, 2025 | — |
| 8-K |
Current report
Listing notice
|
Jun 25, 2025 | Jun 24, 2025 |
| S-1/A | Amended registration statement | Jun 23, 2025 | — |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Unregistered share sale
|
Jun 20, 2025 | Jun 17, 2025 |
| S-1 | Registration statement | Jun 18, 2025 | — |
| S-1/A | Amended registration statement | Jun 18, 2025 | — |
| CORRESP | Letter to the SEC | Jun 17, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 16, 2025 | — |
| S-1 | Registration statement | Jun 11, 2025 | — |
| CORRESP | Letter to the SEC | Jun 10, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 6, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Jun 5, 2025 | May 30, 2025 |
| S-1 | Registration statement | Jun 2, 2025 | — |
| S-8 | Employee stock plan registration | May 30, 2025 | — |
| DRSLTR | Filing | May 30, 2025 | — |
| UPLOAD | Letter from the SEC | May 22, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2025 | May 19, 2025 |
| 8-K |
Current report
Other events
|
May 19, 2025 | May 19, 2025 |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| DRS | Filing | May 15, 2025 | — |
| DRSLTR | Filing | May 14, 2025 | — |
| D | Filing | May 9, 2025 | — |
| EFFECT | Filing | Apr 30, 2025 | — |
| ARS | Annual report to shareholders | Apr 28, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 28, 2025 | May 19, 2025 |
| CORRESP | Letter to the SEC | Apr 28, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 24, 2025 | — |
| S-1 | Registration statement | Apr 22, 2025 | — |
| 8-K/A |
Amended current report
Other events
|
Apr 15, 2025 | Apr 15, 2025 |
| 8-K |
Current report
Other events
|
Apr 15, 2025 | Apr 15, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 14, 2025 | May 19, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure
|
Apr 14, 2025 | Apr 12, 2025 |
| 10-K/A | Amended annual report | Apr 9, 2025 | Dec 31, 2024 |
| NT 10-K | Filing | Apr 1, 2025 | Dec 31, 2024 |
| 10-K | Annual report | Apr 1, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Mar 27, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 26, 2025 | Mar 20, 2025 |
| 8-K |
Current report
Material agreement
|
Mar 21, 2025 | Mar 20, 2025 |
| 8-K |
Current report
Other events
|
Mar 4, 2025 | Mar 3, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Feb 13, 2025 | Feb 10, 2025 |
| 424B5 | Prospectus supplement | Feb 11, 2025 | — |
| EFFECT | Filing | Feb 10, 2025 | — |
| CORRESP | Letter to the SEC | Feb 6, 2025 | — |
| CORRESP | Letter to the SEC | Feb 6, 2025 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 31, 2025 | Jan 27, 2025 |
| S-1/A | Amended registration statement | Jan 29, 2025 | — |
| UPLOAD | Letter from the SEC | Jan 27, 2025 | — |
| S-1 | Registration statement | Jan 21, 2025 | — |
| 8-K |
Current report
Listing notice, Regulation FD disclosure, Other events
|
Jan 16, 2025 | Jan 13, 2025 |
| EFFECT | Filing | Jan 2, 2025 | — |
| CORRESP | Letter to the SEC | Dec 31, 2024 | — |
| S-1/A | Amended registration statement | Dec 26, 2024 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 18, 2024 | Dec 17, 2024 |
| 424B4 | Prospectus | Dec 18, 2024 | — |
| EFFECT | Filing | Dec 17, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 17, 2024 | Dec 17, 2024 |
| 8-K/A |
Amended current report
Material agreement
|
Dec 17, 2024 | Nov 30, 2024 |
| CORRESP | Letter to the SEC | Dec 16, 2024 | — |
| CORRESP | Letter to the SEC | Dec 16, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 16, 2024 | — |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Dec 16, 2024 | Dec 13, 2024 |
| S-1 | Registration statement | Dec 11, 2024 | — |
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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.