Henn Matthew R (CIK 1767321) reported 16 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-18). Recent activity: Buy MCRB (238 shares), Sell MCRB (81 shares), Buy MCRB (238 shares), Sell MCRB (77 shares), Buy MCRB (239 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 238 | $0 |
| 2026-08-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 81 | $369 |
| 2026-05-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 238 | $0 |
| 2026-05-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 77 | $580 |
| 2026-02-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 239 | $0 |
| 2026-02-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 89 | $754 |
| 2025-11-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 3,998 | $0 |
| 2025-11-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 140 | $0 |
| 2025-11-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 98 | $0 |
| 2025-11-18 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 1,257 | $21,746 |
| 2025-08-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 141 | $0 |
| 2025-08-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 97 | $0 |
| 2025-08-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 73 | $1,215 |
| 2025-05-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 140 | $0 |
| 2025-05-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Buy | 98 | $0 |
| 2025-05-19 | Seres Therapeutics, Inc. (MCRB) | See Remarks | Sell | 77 | $561 |
Source: SEC Form 4 filings · as of 2026-08-18