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 |
| 2026-02-15 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 |
| 2025-08-18 Sale | 2025-08-19 4:07 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 76 | $16.65 | $1,265 | 9,364 (Direct) | View |
| 2025-08-18 Sale | 2025-08-19 4:07 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 73 | $16.65 | $1,215 | 6,368 (Direct) | View |
| 2025-08-18 Sale | 2025-08-19 4:06 pm | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 59 | $16.65 | $982 | 6,987 (Direct) | View |
| 2025-05-16 Sale | 2025-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 63 | $7.28 | $459 | 7,046 (Direct) | View |
| 2025-05-16 Sale | 2025-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 220 | $7.28 | $1,602 | 16,490 (Direct) | View |
| 2025-05-15 Sale | 2025-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 79 | $7.28 | $575 | 9,440 (Direct) | View |
| 2025-05-16 Sale | 2025-05-19 4:05 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 77 | $7.28 | $561 | 6,441 (Direct) | View |
| 2025-02-18 Sale | 2025-02-19 8:11 pm | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 3,338 | $0.8102 | $2,704 | 142,223 (Direct) | View |
| 2025-02-18 Sale | 2025-02-19 8:10 pm | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 3,953 | $0.8104 | $3,204 | 130,380 (Direct) | View |
| 2025-02-18 Sale | 2025-02-19 8:08 pm | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 12,726 | $0.8105 | $10,314 | 334,226 (Direct) | View |
| 2025-02-18 Sale | 2025-02-19 8:07 pm | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 4,300 | $0.8105 | $3,485 | 190,424 (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 |
| 2026-03-04 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 |
| 2025-08-15 Exercise | 2025-08-19 4:07 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas See Remarks | 244 | $0 | 9,364 (Direct) | View |
| 2025-08-15 Exercise | 2025-08-19 4:07 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 238 | $0 | 6,368 (Direct) | View |
| 2025-08-15 Exercise | 2025-08-19 4:06 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 230 | $0 | 6,987 (Direct) | View |
| 2025-08-05 Option Award | 2025-08-06 4:10 pm | N/A 2035-08-05 | Seres Therapeutics Inc. | MCRB | Rosiello Robert L. Director | 10,000 | $0 | 10,000 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-02 5:58 pm | N/A 2035-07-01 | Seres Therapeutics Inc. | MCRB | Ausiello Dennis A Director | 6,452 | $0 | 6,452 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-02 5:38 pm | N/A 2035-07-01 | Seres Therapeutics Inc. | MCRB | Berenson Stephen Director | 11,470 | $0 | 11,470 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-02 5:34 pm | N/A 2035-07-01 | Seres Therapeutics Inc. | MCRB | Fraser Claire Director | 6,452 | $0 | 6,452 (Direct) | View |
| 2025-05-15 Exercise | 2025-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 231 | $0 | 7,046 (Direct) | View |
| 2025-05-15 Exercise | 2025-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 721 | $0 | 16,490 (Direct) | View |
| 2025-05-15 Exercise | 2025-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 244 | $0 | 9,440 (Direct) | View |
| 2025-05-15 Exercise | 2025-05-19 4:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R See Remarks | 238 | $0 | 6,441 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Biondi Paul Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Fraser Claire Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Graves Kurt Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Berenson Stephen Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Kender Richard N Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Ausiello Dennis A Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-04-10 Option Award | 2025-04-11 4:05 pm | N/A 2035-04-09 | Seres Therapeutics Inc. | MCRB | Dere Willard H Director | 100,000 | $0 | 100,000 (Direct) | View |
| 2025-02-15 Exercise | 2025-02-19 8:11 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 10,470 | $0 | 142,223 (Direct) | View |
| 2025-02-15 Exercise | 2025-02-19 8:10 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 10,626 | $0 | 130,380 (Direct) | View |
| 2025-02-15 Exercise | 2025-02-19 8:08 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 34,376 | $0 | 334,226 (Direct) | View |
| 2025-02-15 Exercise | 2025-02-19 8:07 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 11,564 | $0 | 190,424 (Direct) | View |