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 |
2023-04-03 Sale | 2023-04-05 4:15 pm | SYNLOGIC INC. | SYBX | Brennan Aoife See Remarks | 19,042 | $0.5758 | $10,964 | 256,301 (Direct) | View |
2023-04-03 Sale | 2023-04-05 4:15 pm | SYNLOGIC INC. | SYBX | Awad Antoine Chief Operating Officer | 6,438 | $0.5758 | $3,707 | 74,732 (Direct) | View |
2023-04-03 Sale | 2023-04-05 4:15 pm | SYNLOGIC INC. | SYBX | JENSEN MICHAEL VANGSTED Chief Financial Officer | 2,553 | $0.5758 | $1,470 | 46,947 (Direct) | View |
2022-05-24 Purchase | 2022-05-25 4:10 pm | SYNLOGIC INC. | SYBX | JENSEN MICHAEL VANGSTED Chief Financial Officer | 9,500 | $1.12 | $10,640 | 39,500 (Direct) | View |
2022-04-04 Sale | 2022-04-06 4:39 pm | SYNLOGIC INC. | SYBX | Brennan Aoife See Remarks | 8,894 | $2.4459 | $21,754 | 275,343 (Direct) | View |
2022-04-04 Sale | 2022-04-06 4:38 pm | SYNLOGIC INC. | SYBX | Awad Antoine Chief Operating Officer | 2,650 | $2.4459 | $6,482 | 81,170 (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 |
2023-06-22 Option Award | 2023-06-26 3:46 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Mathers Edward T Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:28 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Shea Richard P Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:25 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Leschly Nick Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:21 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Burgess Michael F. Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:21 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Kelly-Croswell Lisa Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:20 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Heffernan Michael Thomas Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:17 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Hurter Patricia N. Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-06-22 Option Award | 2023-06-26 2:06 pm | N/A 2033-06-22 | SYNLOGIC INC. | SYBX | Barrett Peter Director | 30,000 | $0 | 30,000 (Direct) | View |
2023-01-03 Option Award | 2023-01-04 5:26 pm | N/A 2033-01-03 | SYNLOGIC INC. | SYBX | Barrett Peter Director | 156,130 | $0 | 156,130 (Direct) | View |
2023-01-03 Option Award | 2023-01-04 5:22 pm | N/A 2033-01-03 | SYNLOGIC INC. | SYBX | Hurter Patricia N. Director | 91,954 | $0 | 91,954 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:45 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Mathers Edward T Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Leschly Nick Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Barrett Peter Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Burgess Michael F. Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Hurter Patricia N. Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Heffernan Michael Thomas Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Kelly-Croswell Lisa Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-06-09 Option Award | 2022-06-13 4:15 pm | N/A 2032-06-09 | SYNLOGIC INC. | SYBX | Shea Richard P Director | 27,000 | $0 | 27,000 (Direct) | View |
2022-03-03 Option Award | 2022-03-03 5:07 pm | N/A 2032-03-03 | SYNLOGIC INC. | SYBX | JENSEN MICHAEL VANGSTED Chief Financial Officer | 260,000 | $0 | 260,000 (Direct) | View |
2022-02-04 Option Award | 2022-02-08 4:05 pm | N/A 2032-02-04 | SYNLOGIC INC. | SYBX | Brennan Aoife See Remarks | 541,080 | $0 | 718,397 (Direct) | View |
2022-02-04 Option Award | 2022-02-08 4:05 pm | N/A 2032-02-04 | SYNLOGIC INC. | SYBX | Awad Antoine Chief Operating Officer | 206,310 | $0 | 249,310 (Direct) | View |
2021-12-06 Option Award | 2022-02-01 4:05 pm | N/A 2031-12-06 | SYNLOGIC INC. | SYBX | BELOFF GREGG See Remarks | 50,000 | $0 | 50,000 (Direct) | View |
2022-01-03 Option Award | 2022-01-05 4:30 pm | N/A 2032-01-03 | SYNLOGIC INC. | SYBX | Barrett Peter Director | 49,334 | $0 | 49,334 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 6:23 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Mathers Edward T Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:13 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Shea Richard P Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:12 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Burgess Michael F. Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:12 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Leschly Nick Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:11 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Kelly-Croswell Lisa Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:09 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Hurter Patricia N. Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:08 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Heffernan Michael Thomas Director | 15,000 | $0 | 15,000 (Direct) | View |
2021-06-10 Option Award | 2021-06-14 5:07 pm | N/A 2031-06-10 | SYNLOGIC INC. | SYBX | Barrett Peter Director | 12,818 | $0 | 12,818 (Direct) | View |
2021-04-20 Option Award | 2021-04-22 5:18 pm | N/A N/A | SYNLOGIC INC. | SYBX | ORBIMED ADVISORS LLC OrbiMed Capital GP VI LLC Director | 1,666,666 | $3 | 3,696,662 (Indirect) | View |
2021-04-20 Option Award | 2021-04-22 5:11 pm | N/A N/A | SYNLOGIC INC. | SYBX | Khuong Chau Quang Director | 1,666,666 | $3 | 3,696,662 (Indirect) | View |