Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-08-17 Sale | 2026-08-18 5:33 pm | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 64 | $4.55 | $291 | 9,406 (Direct) | View |
| 2026-08-17 Sale | 2026-08-18 5:27 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 263 | $4.55 | $1,197 | 15,275 (Direct) | View |
| 2026-08-17 Sale | 2026-08-18 5:25 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 81 | $4.55 | $369 | 8,862 (Direct) | View |
| 2026-08-17 Sale | 2026-08-18 5:22 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 82 | $4.55 | $373 | 9,049 (Direct) | View |
| 2026-05-18 Sale | 2026-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 259 | $7.53 | $1,950 | 15,538 (Direct) | View |
| 2026-05-18 Sale | 2026-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 79 | $7.53 | $595 | 9,131 (Direct) | View |
| 2026-05-18 Sale | 2026-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 59 | $7.53 | $444 | 9,470 (Direct) | View |
| 2026-05-18 Sale | 2026-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 77 | $7.53 | $580 | 8,943 (Direct) | View |
| 2026-02-15 Sale | 2026-02-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 259 | $8.47 | $2,194 | 15,797 (Direct) | View |
| 2026-02-15 Sale | 2026-02-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 75 | $8.47 | $635 | 9,868 (Direct) | View |
| 2026-02-15 Sale | 2026-02-18 4:30 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 78 | $8.47 | $661 | 9,210 (Direct) | View |
| 2026-02-15 Sale | 2026-02-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 89 | $8.47 | $754 | 9,020 (Direct) | View |
| 2025-11-15 Sale | 2025-11-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 1,042 | $17.3 | $18,027 | 9,943 (Direct) | View |
| 2025-11-15 Sale | 2025-11-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 217 | $17.3 | $3,754 | 16,056 (Direct) | View |
| 2025-11-15 Sale | 2025-11-18 4:30 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 76 | $17.3 | $1,315 | 9,288 (Direct) | View |
| 2025-11-15 Sale | 2025-11-18 4:30 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 1,257 | $17.3 | $21,746 | 9,109 (Direct) | View |
| 2025-08-18 Sale | 2025-08-19 4:08 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 217 | $16.65 | $3,613 | 16,273 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-08-15 Exercise | 2026-08-18 5:33 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 362 | $0 | 9,406 (Direct) | View |
| 2026-08-15 Exercise | 2026-08-18 5:27 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 1,444 | $0 | 15,275 (Direct) | View |
| 2026-08-15 Exercise | 2026-08-18 5:25 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 476 | $0 | 8,862 (Direct) | View |
| 2026-08-15 Exercise | 2026-08-18 5:22 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 490 | $0 | 9,049 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Graves Kurt Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Kender Richard N See Remarks | 50,000 | $0 | 50,000 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 25,000 | $0 | 25,000 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Thorell Marella See Remarks | 7,500 | $0 | 7,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Fraser Claire Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Dere Willard H Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Ausiello Dennis A Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Rosiello Robert L. Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-07-07 | Seres Therapeutics Inc. | MCRB | Berenson Stephen Director | 6,500 | $0 | 6,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 7,500 | $0 | 7,500 (Direct) | View |
| 2026-07-08 Option Award | 2026-07-10 4:15 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 18,750 | $0 | 18,750 (Direct) | View |
| 2026-07-01 Option Award | 2026-07-02 6:12 pm | N/A 2036-07-01 | Seres Therapeutics Inc. | MCRB | Berenson Stephen Director | 7,508 | $0 | 7,508 (Direct) | View |
| 2026-07-01 Option Award | 2026-07-02 6:09 pm | N/A 2036-07-01 | Seres Therapeutics Inc. | MCRB | Rosiello Robert L. Director | 7,508 | $0 | 7,508 (Direct) | View |
| 2026-07-01 Option Award | 2026-07-02 6:05 pm | N/A 2036-07-01 | Seres Therapeutics Inc. | MCRB | Ausiello Dennis A Director | 7,508 | $0 | 7,508 (Direct) | View |
| 2026-05-15 Exercise | 2026-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 1,444 | $0 | 15,538 (Direct) | View |
| 2026-05-15 Exercise | 2026-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 488 | $0 | 9,131 (Direct) | View |
| 2026-05-15 Exercise | 2026-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 360 | $0 | 9,470 (Direct) | View |
| 2026-05-15 Exercise | 2026-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 476 | $0 | 8,943 (Direct) | View |
| 2026-03-04 Option Award | 2026-03-11 6:39 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 56,250 | $0 | 56,250 (Direct) | View |
Ownership | 2026-03-11 6:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Brady Kelly See Remarks | 0 | $0 | 31,608 (Direct) | View |
| 2026-03-04 Option Award | 2026-03-06 4:36 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Kender Richard N See Remarks | 150,000 | $0 | 150,000 (Direct) | View |
| 2026-03-04 Option Award | 2026-03-06 4:35 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 75,000 | $0 | 75,000 (Direct) | View |
| 2026-03-04 Option Award | 2026-03-06 4:33 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | Thorell Marella See Remarks | 22,500 | $0 | 22,500 (Direct) | View |
| 2026-03-04 Option Award | 2026-03-06 4:31 pm | N/A 2036-03-03 | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 22,500 | $0 | 22,500 (Direct) | View |
| 2026-02-15 Exercise | 2026-02-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 1,447 | $0 | 15,797 (Direct) | View |
| 2026-02-15 Exercise | 2026-02-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 462 | $0 | 9,868 (Direct) | View |
| 2026-02-15 Exercise | 2026-02-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 488 | $0 | 9,210 (Direct) | View |
| 2026-02-15 Exercise | 2026-02-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 478 | $0 | 9,020 (Direct) | View |
| 2025-11-15 Exercise | 2025-11-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 4,228 | $0 | 9,943 (Direct) | View |
| 2025-11-15 Exercise | 2025-11-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 721 | $0 | 16,056 (Direct) | View |
| 2025-11-15 Exercise | 2025-11-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 244 | $0 | 9,288 (Direct) | View |
| 2025-11-15 Exercise | 2025-11-18 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 4,236 | $0 | 9,109 (Direct) | View |
| 2025-09-26 Option Award | 2025-09-30 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 3,998 | $0 | 3,998 (Direct) | View |
| 2025-09-26 Option Award | 2025-09-30 4:30 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 3,998 | $0 | 3,998 (Direct) | View |
| 2025-08-15 Exercise | 2025-08-19 4:08 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. Director | 724 | $0 | 16,273 (Direct) | View |