🕵️ Momentus Inc. ($MNTS)
SEC insider & ownership activity, last 12 months · CIK 1781162 · every row links its SEC filing
Over the last 12 months insiders bought $35K with no open-market selling against it. Hadfield Chris bought $22K in discretionary trades (May). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $35K (5 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Hadfield Chris | 2 | $22K | 0 | – | May 21, 2026 |
| Kabot Brian | 3 | $13K | 0 | – | May 20, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Kenneth Griffin | 10.0% | 13G | Apr 22, 2026 | filing ↗ | |
| Citadel Advisors LLC | 10.0% | 13G | Apr 22, 2026 | filing ↗ | |
| Citadel Advisors Holdings LP | 10.0% | 13G | Apr 22, 2026 | filing ↗ | |
| Citadel GP LLC | 10.0% | 13G | Apr 22, 2026 | filing ↗ | |
| Davidson Kempner Capital Management LP | 8.9% | 13G | May 28, 2026 | filing ↗ | |
| Anthony A. Yoseloff | 8.9% | 13G | May 28, 2026 | filing ↗ | |
| Davidson Kempner Arbitrage, Equities & Relative Value LP | 8.7% | 13G | May 28, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Jun 18, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 18, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 11, 2026 | filing ↗ |
| Material agreement (1.01) | May 26, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | May 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 26, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 19, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Agreement terminated (1.02) | Apr 17, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 14, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Apr 14, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 14, 2026 | filing ↗ |
| Other events (8.01) | Apr 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 13, 2026 | filing ↗ |
| Other events (8.01) | Feb 20, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 6, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 9, 2026 | filing ↗ |
| New financial obligation (2.03) | Jan 9, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Jan 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 9, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 5, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jan 5, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 5, 2026 | filing ↗ |