🕵️ Decoy Therapeutics Inc. ($DCOY)
SEC insider & ownership activity, last 12 months · CIK 1615219 · every row links its SEC filing
Over the last 12 months insiders sold $17 against $20K of open-market buying. Mark J. Rosenblum bought $16K in discretionary trades (Nov). One red-flag 8-K in the window: Delisting notice (3.01), Dec 31, 2025.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $20K (2 lots) · 1 seller, $17 (2 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Mark J. Rosenblum | 1 | $16K | 0 | – | Nov 20, 2025 |
| Arnold C. Hanish | 1 | $4K | 2 | $17 | Dec 30, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| CVI Investments, Inc. | 9.9% | 13G | Feb 17, 2026 | filing ↗ | |
| Heights Capital Management, Inc. | 9.9% | 13G | Feb 17, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Shareholder vote (5.07) | Jul 14, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 26, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jun 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 26, 2026 | filing ↗ |
| Shareholder Nominations Pursuant to Exchange Act Rule 14a-11 (5.08) | May 19, 2026 | filing ↗ |
| Other events (8.01) | May 19, 2026 | filing ↗ |
| Other events (8.01) | Mar 31, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 31, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Mar 5, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Mar 5, 2026 | filing ↗ |
| Other events (8.01) | Mar 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 24, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jan 8, 2026 | filing ↗ |
| Other events (8.01) | Jan 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 8, 2026 | filing ↗ |
| Delisting notice (3.01) | Dec 31, 2025 | filing ↗ |
| Shareholder vote (5.07) | Dec 31, 2025 | filing ↗ |
| Shareholder vote (5.07) | Dec 19, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 19, 2025 | filing ↗ |
| Officer/director changes (5.02) | Nov 18, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 17, 2025 | filing ↗ |
| Material agreement (1.01) | Nov 11, 2025 | filing ↗ |
| Acquisition or disposition (2.01) | Nov 11, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Nov 11, 2025 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Nov 11, 2025 | filing ↗ |
| Officer/director changes (5.02) | Nov 11, 2025 | filing ↗ |
| Charter/bylaw changes (5.03) | Nov 11, 2025 | filing ↗ |