🕵️ Archimedes Tech SPAC Partners III Co. ($ARCIW)
SEC insider & ownership activity, last 12 months · CIK 2083910 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. No red-flag 8-Ks in the window.
Insider flow
2 buyers, $0 (4 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Long Long | 2 | – | 0 | – | Jan 26, 2026 |
| Archimedes Tech SPAC Sponsors III LLC | 2 | – | 0 | – | Jan 26, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Adage Capital Management, L.P. | 5.1% | 13G | May 13, 2026 | filing ↗ | |
| Robert Atchinson | 5.1% | 13G | May 13, 2026 | filing ↗ | |
| Phillip Gross | 5.1% | 13G | May 13, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jul 13, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 28, 2026 | filing ↗ |
| Other events (8.01) | Mar 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 10, 2026 | filing ↗ |
| Other events (8.01) | Jan 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 26, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 22, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jan 22, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jan 22, 2026 | filing ↗ |
| Other events (8.01) | Jan 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 22, 2026 | filing ↗ |