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 |
2024-02-23 Sale |
2024-02-26 8:38 pm |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
4,373 | $198.08 | $866,204 | 18,135 (Direct) |
View |
2022-08-03 Sale |
2022-08-04 4:32 pm |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
2,000 | $240.4 | $480,800 | 17,733 (Direct) |
View |
2021-04-06 Sale |
2021-04-08 7:55 pm |
REPLIGEN CORP | RGEN | Bylund James SVP, Global Operations & IT |
360 | $204.25 | $73,530 | 6,324 (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 |
2025-04-01 Tax Withholding |
2025-04-02 10:33 am |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
454 | $128.5 | 23,711 (Direct) |
View |
2025-03-13 Option Award |
2025-03-20 1:51 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
381 | $0 | 24,165 (Direct) |
View |
2025-03-13 Tax Withholding |
2025-03-20 1:51 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
175 | $142.44 | 24,165 (Direct) |
View |
2025-03-03 Option Award |
2025-03-04 1:29 pm |
N/A 2035-03-03 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
12,491 | $0 | 30,015 (Direct) |
View |
2025-03-03 Tax Withholding |
2025-03-04 1:29 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
1,239 | $155.38 | 30,015 (Direct) |
View |
2025-02-27 Tax Withholding |
2025-02-28 4:29 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
1,285 | $156.54 | 18,763 (Direct) |
View |
2025-02-24 Tax Withholding |
2025-02-25 10:27 am |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
543 | $164.74 | 20,048 (Direct) |
View |
2024-04-02 Tax Withholding |
2024-04-04 5:04 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
444 | $182.95 | 20,591 (Direct) |
View |
2024-03-07 Tax Withholding |
2024-03-07 4:23 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
1,206 | $195.72 | 21,035 (Direct) |
View |
2024-03-04 Tax Withholding |
2024-03-06 8:06 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
197 | $193.99 | 22,241 (Direct) |
View |
2024-03-05 Tax Withholding |
2024-03-06 8:06 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
22 | $195.52 | 22,241 (Direct) |
View |
2024-03-01 Option Award |
2024-03-05 8:44 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
50 | $0 | 22,460 (Direct) |
View |
2024-02-29 Option Award |
2024-03-04 9:45 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
404 | $0 | 22,410 (Direct) |
View |
2024-03-01 Tax Withholding |
2024-03-04 9:45 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
820 | $191.79 | 22,410 (Direct) |
View |
2024-02-27 Option Award |
2024-02-29 9:25 pm |
N/A 2034-02-27 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
17,323 | $0 | 31,458 (Direct) |
View |
2024-02-23 Exercise |
2024-02-26 8:38 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
940 | $94.33 | 18,135 (Direct) |
View |
2024-02-23 Exercise |
2024-02-26 8:38 pm |
N/A 2030-04-01 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
940 | $0 | 18,135 (Direct) |
View |
2023-04-04 Tax Withholding |
2023-04-04 9:37 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
334 | $163.45 | 17,568 (Direct) |
View |
2023-03-02 Option Award |
2023-03-06 5:13 pm |
N/A 2033-03-02 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
17,617 | $0 | 26,546 (Direct) |
View |
2023-03-03 Tax Withholding |
2023-03-06 5:13 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
210 | $188 | 26,546 (Direct) |
View |
2023-02-28 Tax Withholding |
2023-02-28 7:54 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
594 | $173.44 | 9,139 (Direct) |
View |
2022-08-03 Exercise |
2022-08-04 4:32 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
2,000 | $94.33 | 17,733 (Direct) |
View |
2022-08-03 Exercise |
2022-08-04 4:32 pm |
N/A 2030-04-01 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
2,000 | $0 | 17,733 (Direct) |
View |
2022-04-01 Tax Withholding |
2022-04-04 5:57 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
335 | $188.02 | 9,733 (Direct) |
View |
2022-02-24 Option Award |
2022-02-28 7:07 pm |
N/A 2032-02-24 |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
7,678 | $0 | 14,380 (Direct) |
View |
2022-02-24 Tax Withholding |
2022-02-28 7:07 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
188 | $189.21 | 14,380 (Direct) |
View |
2022-02-17 Option Award |
2022-02-22 7:37 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
900 | $0 | 6,890 (Direct) |
View |
2022-02-17 Tax Withholding |
2022-02-22 7:37 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James Chief Operating Officer |
334 | $182.42 | 6,890 (Direct) |
View |
Ownership |
2021-03-08 7:43 pm |
N/A N/A |
REPLIGEN CORP | RGEN | Bylund James SVP, Global Operations & IT |
0 | $0 | 18,717 (Direct) |
View |