🕵️ Keystone Acquisition Corp. ($KEYY)
SEC insider & ownership activity, last 12 months · CIK 2102771 · 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
0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)
No open-market insider transactions in the last 12 months.
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Magnetar Financial LLC | 7.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| Magnetar Capital Partners LP | 7.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| Supernova Management LLC | 7.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| David J. Snyderman | 7.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| AQR Capital Management, LLC | 6.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| AQR Capital Management Holdings, LLC | 6.0% | Class A | 13G | Aug 13, 2026 | filing ↗ |
| AQR Arbitrage, LLC | 6.0% | Class A | 13G | Aug 13, 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 ↗ |
| Other events (8.01) | Jun 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 4, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 2, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jun 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 2, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jun 2, 2026 | filing ↗ |
| Other events (8.01) | Jun 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 2, 2026 | filing ↗ |