MCDONOUGH GEOFF (CIK 1732701) reported 17 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-02-09). Recent activity: Sell GBIO (138,492 shares), Sell GBIO (22,646 shares), Sell GBIO (27,500 shares), Buy GBIO (1,582 shares), Sell GBIO (550 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-09 | Generation Bio Co. (GBIO) | Director | Sell | 138,492 | $0 |
| 2026-02-09 | Generation Bio Co. (GBIO) | Director | Sell | 22,646 | $0 |
| 2026-02-09 | Generation Bio Co. (GBIO) | Director | Sell | 27,500 | $0 |
| 2026-02-04 | Generation Bio Co. (GBIO) | Director | Buy | 1,582 | $0 |
| 2026-02-04 | Generation Bio Co. (GBIO) | Director | Sell | 550 | $3,102 |
| 2026-01-16 | Generation Bio Co. (GBIO) | Director | Buy | 395 | $0 |
| 2026-01-16 | Generation Bio Co. (GBIO) | Director | Sell | 137 | $773 |
| 2025-11-21 | Generation Bio Co. (GBIO) | Director | Buy | 659 | $0 |
| 2025-11-21 | Generation Bio Co. (GBIO) | Director | Sell | 293 | $1,614 |
| 2025-10-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Buy | 527 | $0 |
| 2025-10-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Sell | 155 | $1,040 |
| 2025-07-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Buy | 5,273 | $0 |
| 2025-07-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Sell | 1,548 | $666 |
| 2025-04-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Buy | 5,274 | $0 |
| 2025-04-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Sell | 1,548 | $573 |
| 2025-01-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Buy | 5,274 | $0 |
| 2025-01-17 | Generation Bio Co. (GBIO) | PRESIDENT AND CEO | Sell | 1,828 | $1,627 |
Source: SEC Form 4 filings · as of 2026-02-09