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 |