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 |
2025-03-05 Sale |
2025-03-07 4:07 pm |
Dyne Therapeutics Inc. | DYN | Cox John CEO & President |
4,061 | $11.83 | $48,042 | 178,239 (Indirect Direct) |
View |
2024-09-04 Purchase |
2024-09-04 5:42 pm |
Dyne Therapeutics Inc. | DYN | Cox John CEO & President |
32,000 | $33.04 | $1,057,216 | 13,000 (Indirect Direct) |
View |
2023-08-11 Sale |
2023-08-11 4:10 pm |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
341 | $0 | $0 | 0 (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 |
2024-12-04 Option Award |
2024-12-06 4:05 pm |
N/A 2034-12-03 |
Dyne Therapeutics Inc. | DYN | Cox John CEO & President |
377,400 | $0 | 414,400 (Direct) |
View |
Ownership(A) |
2024-04-04 9:07 pm |
N/A N/A |
Dyne Therapeutics Inc. | DYN | Cox John CEO & President |
0 | $0 | 5,000 (Direct) |
View |
2024-03-25 Option Award |
2024-03-27 4:24 pm |
N/A 2034-03-24 |
Dyne Therapeutics Inc. | DYN | Cox John See Remarks |
679,853 | $0 | 679,853 (Direct) |
View |
Ownership |
2024-03-27 4:13 pm |
N/A N/A |
Dyne Therapeutics Inc. | DYN | Cox John See Remarks |
0 | $0 | 10,000 (Direct) |
View |
2023-05-19 Option Award |
2023-05-22 4:20 pm |
N/A 2033-05-18 |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
8,888 | $0 | 8,888 (Direct) |
View |
2022-05-26 Option Award |
2022-05-27 5:00 pm |
N/A 2032-05-25 |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
8,888 | $0 | 8,888 (Direct) |
View |
2021-06-24 Option Award |
2021-06-28 07:15 am |
N/A 2031-06-23 |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
8,888 | $9.97 | 8,888 (Direct) |
View |
2020-12-08 Conversion |
2020-12-10 6:15 pm |
N/A N/A |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
4,444 | $0 | 4,444 (Indirect) |
View |
Ownership |
2020-12-03 8:42 pm |
N/A N/A |
Sigilon Therapeutics Inc. | SGTX | Cox John Director |
0 | $0 | 59,999 (Indirect) |
View |