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 |
2021-06-07 Sale |
2021-06-09 7:04 pm |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
3,087 | $440 | $1,358,280 | 2,919 (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 |
2025-01-27 Option Award |
2025-01-29 6:07 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
28,158 | $97.94 | 69,199 (Direct) |
View |
2024-12-02 Option Award |
2024-12-04 07:22 am |
N/A 2034-12-02 |
Beam Therapeutics Inc. | BEAM | Guindo Chirfi Director |
39,086 | $0 | 39,086 (Direct) |
View |
2024-08-05 Exercise |
2024-08-06 12:20 pm |
2023-08-03 2025-08-03 |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
36,901 | $0 | 77,326 (Direct) |
View |
2024-08-05 Exercise |
2024-08-06 12:20 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
36,901 | $115.2 | 77,326 (Direct) |
View |
2024-08-05 Tax Withholding |
2024-08-06 12:20 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
17,412 | $115.2 | 77,326 (Direct) |
View |
2024-04-30 Option Award |
2024-05-02 4:22 pm |
2025-04-30 2034-04-29 |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
29,297 | $0 | 50,104 (Direct) |
View |
2023-08-03 Exercise |
2023-08-04 4:17 pm |
2023-08-03 2025-08-03 |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
36,901 | $0 | 94,209 (Direct) |
View |
2023-08-03 Exercise |
2023-08-04 4:17 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
36,901 | $105.7 | 94,209 (Direct) |
View |
2023-08-03 Tax Withholding |
2023-08-04 4:17 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
17,989 | $105.7 | 94,209 (Direct) |
View |
2023-05-02 Option Award |
2023-05-04 5:43 pm |
2024-05-02 2033-05-01 |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
34,578 | $0 | 36,061 (Direct) |
View |
Ownership(A) |
2023-04-28 4:18 pm |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
0 | $0 | 1,450 (Direct) |
View |
2022-08-03 Option Award |
2022-08-04 4:04 pm |
2023-08-03 2025-08-03 |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
110,705 | $0 | 110,759 (Direct) |
View |
Ownership |
2022-07-08 11:48 am |
N/A N/A |
Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer |
0 | $0 | 53 (Direct) |
View |
2022-02-18 Tax Withholding |
2022-02-23 4:15 pm |
N/A N/A |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
879 | $209.79 | 29,551 (Direct) |
View |
2022-02-18 Exercise |
2022-02-23 4:15 pm |
N/A 2024-02-18 |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
1,981 | $0 | 29,551 (Direct) |
View |
2022-02-18 Other |
2022-02-23 4:15 pm |
N/A 2024-02-18 |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
2,851 | $0 | 29,551 (Direct) |
View |
2022-02-12 Exercise |
2022-02-15 4:15 pm |
N/A 2022-02-12 |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
2,597 | $0 | 18,773 (Direct) |
View |
2022-02-12 Other |
2022-02-15 4:15 pm |
N/A 2022-02-12 |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
4,875 | $0 | 18,773 (Direct) |
View |
2022-02-12 Tax Withholding |
2022-02-15 4:15 pm |
N/A N/A |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
2,342 | $214.59 | 18,773 (Direct) |
View |
2022-02-10 Option Award |
2022-02-14 4:26 pm |
N/A 2025-02-10 |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
9,090 | $0 | 15,097 (Direct) |
View |
2022-01-19 Option Award |
2022-01-21 4:47 pm |
N/A N/A |
BIOGEN INC. | BIIB | Guindo Chirfi Head of Glob Prod Strat & Com |
3,088 | $0 | 6,007 (Direct) |
View |
2021-02-18 Option Award |
2021-02-22 4:11 pm |
N/A 2024-02-18 |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
14,500 | $0 | 14,500 (Direct) |
View |
2021-02-12 Exercise |
2021-02-17 4:58 pm |
N/A 2022-02-12 |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
3,156 | $0 | 32,898 (Direct) |
View |
2021-02-12 Tax Withholding |
2021-02-17 4:58 pm |
N/A N/A |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
940 | $278.03 | 32,898 (Direct) |
View |
2021-02-12 Other |
2021-02-17 4:58 pm |
N/A 2022-02-12 |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
4,312 | $0 | 32,898 (Direct) |
View |
2020-12-01 Exercise |
2020-12-03 5:41 pm |
N/A 2020-12-01 |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
481 | $0 | 4,483 (Direct) |
View |
2020-12-01 Other |
2020-12-03 5:41 pm |
N/A 2020-12-01 |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
693 | $0 | 4,483 (Direct) |
View |
2020-12-01 Tax Withholding |
2020-12-03 5:41 pm |
N/A N/A |
BIOGEN INC. | BIIB | Guindo Chirfi EVP Glob. Prod Strat and Comm |
562 | $243.16 | 4,483 (Direct) |
View |