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 |
2023-04-28 Sale | 2023-05-01 4:46 pm | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 7,038 | $5.19 | $36,527 | 59,696 (Direct) | View |
2022-10-31 Sale | 2022-10-31 7:37 pm | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 5,012 | $7.93 | $39,745 | 46,734 (Direct) | View |
2022-07-05 Purchase | 2022-07-07 5:00 pm | Seres Therapeutics Inc. | MCRB | Nutritional Health LTP Fund General Partner LLC Nutritional Health LTP Fund L.P. Flagship Pioneering Inc. AFEYAN NOUBAR 10% Owner | 8,738,243 | $3.15 | $27,525,465 | 17,617,352 (Indirect) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2023-04-27 Option Award | 2023-05-01 4:46 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 20,000 | $0 | 59,696 (Direct) | View |
2023-04-27 Option Award | 2023-05-01 4:43 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Arkowitz David Chief Financial Officer | 42,500 | $0 | 166,613 (Direct) | View |
2023-04-27 Option Award | 2023-05-01 4:41 pm | 2023-04-27 2027-06-18 | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 35,000 | $0 | 70,000 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:50 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 142,500 | $0 | 142,500 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:48 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | von Moltke Lisa See Remarks | 142,500 | $0 | 142,500 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:46 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 135,000 | $0 | 135,000 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:45 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 127,500 | $0 | 127,500 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:45 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 375,000 | $0 | 375,000 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:44 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Arkowitz David Chief Financial Officer | 127,500 | $0 | 127,500 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:43 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Young Teresa L. See Remarks | 212,500 | $0 | 212,500 (Direct) | View |
2023-02-03 Option Award | 2023-02-07 5:42 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Cloghessy Paula See Remarks | 142,500 | $0 | 142,500 (Direct) | View |
2023-01-04 Option Award | 2023-01-05 4:35 pm | N/A 2033-01-03 | Seres Therapeutics Inc. | MCRB | Fraser Claire Director | 48,000 | $0 | 48,000 (Direct) | View |
2022-10-27 Option Award | 2022-10-31 7:37 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 20,000 | $0 | 46,734 (Direct) | View |
2022-10-27 Option Award | 2022-10-31 6:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Arkowitz David Chief Financial Officer | 42,500 | $0 | 112,992 (Direct) | View |
2022-06-15 Exercise | 2022-10-31 6:05 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Arkowitz David Chief Financial Officer | 5,000 | $0 | 112,992 (Direct) | View |
2022-09-08 Option Award | 2022-09-09 4:46 pm | 2022-09-08 2027-07-18 | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 35,000 | $0 | 35,000 (Direct) | View |
Ownership | 2022-07-07 5:00 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Flagship Pioneering Fund VII General Partner LLC Flagship Pioneering Fund VII L.P. 10% Owner | 0 | $0 | 5,825,495 (Indirect) | View |
2022-07-05 Option Award | 2022-07-06 7:29 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | DesRosier Thomas Chief Legal Officer and EVP | 63,492 | $3.15 | 104,546 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:27 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Henn Matthew R. See Remarks | 47,619 | $3.15 | 47,619 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:25 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Cloghessy Paula See Remarks | 31,746 | $3.15 | 31,746 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:23 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Arkowitz David Chief Financial Officer | 63,492 | $3.15 | 65,492 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:23 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Kender Richard N Director | 63,492 | $3.15 | 63,492 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:22 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Ege David S. See Remarks | 31,746 | $3.15 | 31,746 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:22 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Dere Willard H Director | 31,746 | $3.15 | 31,746 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:21 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Shaff Eric D. CEO and President | 63,492 | $3.15 | 96,334 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:19 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Zausner Meryl Director | 31,746 | $3.15 | 31,746 (Direct) | View |
2022-07-05 Option Award | 2022-07-06 7:19 pm | N/A N/A | Seres Therapeutics Inc. | MCRB | Biondi Paul Director | 47,619 | $3.15 | 47,619 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:36 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Kender Richard N Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:35 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Zausner Meryl Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:35 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Graves Kurt Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:35 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Biondi Paul Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:32 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Zausner Meryl Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:32 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Kender Richard N Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:32 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Graves Kurt Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:31 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Behar Gregory Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:31 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Ausiello Dennis A Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:30 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Berenson Stephen Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-06-22 Option Award | 2022-06-24 4:30 pm | N/A 2032-06-21 | Seres Therapeutics Inc. | MCRB | Dere Willard H Director | 35,000 | $0 | 35,000 (Direct) | View |
2022-02-07 Option Award | 2022-02-08 9:35 pm | N/A 2032-02-06 | Seres Therapeutics Inc. | MCRB | Cloghessy Paula See Remarks | 190,000 | $0 | 190,000 (Direct) | View |