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 |
2021-06-04 Sale |
2021-06-07 7:02 pm |
BIOGEN INC. | BIIB | Posner Brian S Director |
360 | $274.17 | $98,701 | 7,400 (Direct) |
View |
2020-05-13 Purchase |
2020-05-15 2:12 pm |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
1,000 | $22.16 | $22,159 | 112,801 (Direct) |
View |
2020-05-06 Purchase |
2020-05-08 4:57 pm |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
1,000 | $23.72 | $23,718 | 111,801 (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 |
2024-05-09 Option Award |
2024-05-13 6:51 pm |
N/A N/A |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
1,455 | $0 | 125,540 (Direct) |
View |
2023-05-04 Option Award |
2023-05-08 6:21 pm |
N/A N/A |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
1,714 | $0 | 124,085 (Direct) |
View |
2022-06-07 Ownership |
2023-01-27 6:31 pm |
N/A N/A |
BIOGEN INC. | BIIB | Posner Brian S Director |
150 | $0 | 8,025 (Direct) |
View |
2022-05-04 Option Award |
2022-05-06 4:04 pm |
N/A N/A |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
2,642 | $0 | 120,371 (Direct) |
View |
2021-07-01 Option Award |
2021-07-02 5:31 pm |
N/A N/A |
BIOGEN INC. | BIIB | Posner Brian S Director |
775 | $0 | 8,175 (Direct) |
View |
2021-05-06 Option Award |
2021-05-10 7:28 pm |
N/A N/A |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
3,143 | $0 | 119,087 (Direct) |
View |
2020-08-03 Ownership |
2021-02-09 4:15 pm |
N/A N/A |
BIOGEN INC. | BIIB | Posner Brian S Director |
125 | $0 | 7,760 (Direct) |
View |
2020-06-03 Option Award |
2020-06-05 5:21 pm |
N/A N/A |
BIOGEN INC. | BIIB | Posner Brian S Director |
890 | $0 | 7,885 (Direct) |
View |
2020-05-07 Option Award |
2020-05-08 4:57 pm |
N/A N/A |
ARCH CAPITAL GROUP LTD. | ACGL | Posner Brian S Director |
5,058 | $0 | 111,801 (Direct) |
View |