🕵️ Synlogic, Inc. ($SYBX)
SEC insider & ownership activity, last 12 months · CIK 1527599 · every row links its SEC filing
Over the last 12 months insiders sold $284 with no open-market buying against it. Dooley Mary Beth sold $284 in discretionary trades (Oct). 3 red-flag 8-Ks in the window, most recently Delisting notice (3.01), Jan 16, 2026.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 1 seller, $284 (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Dooley Mary Beth | 0 | – | 1 | $284 | Oct 29, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Funicular Funds, LP | 28.3% | 13D | Jul 28, 2026 | filing ↗ | |
| Cable CAR Capital, LP | 28.3% | 13D | Jul 28, 2026 | filing ↗ | |
| Ma-Weaver Jacob | 28.3% | 13D | Jul 28, 2026 | filing ↗ | |
| Baselake Partners, LP | 9.7% | 13G | Jan 23, 2026 | filing ↗ | |
| Baselake Management, LLC | 9.7% | 13G | Jan 23, 2026 | filing ↗ | |
| David Paolella | 9.7% | 13G | Jan 23, 2026 | filing ↗ | |
| Kryzanowski, JOHN A. | 6.3% | 13G | Feb 25, 2025 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jul 27, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Jul 27, 2026 | filing ↗ |
| Change of control (5.01) | Jul 27, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 27, 2026 | filing ↗ |
| Delisting notice (3.01) | Jan 16, 2026 | filing ↗ |
| Other events (8.01) | Jan 16, 2026 | filing ↗ |
| Delisting notice (3.01) | Jan 16, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 15, 2025 | filing ↗ |
| Shareholder vote (5.07) | Dec 15, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 15, 2025 | filing ↗ |
| Delisting notice (3.01) | Nov 21, 2025 | filing ↗ |