3 insiders reported 5 Form 4 transactions for SYNLOGIC, INC. (SYBX) over the past 18 months (most recent 2025-10-31). Recent activity: Dooley Mary Beth (See Remarks below) Sell 157 shares, Flynn James P (Director) Buy 15,000 shares, Shea Richard P (Director) Buy 15,000 shares, Dooley Mary Beth (See Remarks below) Sell 144 shares, Dooley Mary Beth (See Remarks below) Sell 2,107 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-10-31 | Dooley Mary Beth | See Remarks below | Sell | 157 | $284 |
| 2025-04-29 | Flynn James P | Director | Buy | 15,000 | $0 |
| 2025-04-29 | Shea Richard P | Director | Buy | 15,000 | $0 |
| 2025-04-03 | Dooley Mary Beth | See Remarks below | Sell | 144 | $173 |
| 2025-02-04 | Dooley Mary Beth | See Remarks below | Sell | 2,107 | $2,802 |
Source: SEC Form 4 filings · as of 2025-10-31
