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 |
2022-08-15 Sale |
2022-08-15 4:16 pm |
Radius Health Inc. | RDUS | Dere Willard H Director |
1,895 | $10 | $18,950 | 0 (Direct) |
View |
2020-06-26 Sale |
2020-06-30 2:11 pm |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
4,430 | $123.61 | $547,592 | 13,290 (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 |
2025-04-10 Option Award |
2025-04-11 4:05 pm |
N/A 2035-04-09 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
100,000 | $0 | 100,000 (Direct) |
View |
2024-06-11 Option Award |
2024-06-12 4:51 pm |
N/A 2034-06-10 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
55,000 | $0 | 55,000 (Direct) |
View |
2024-05-21 Option Award |
2024-05-23 5:20 pm |
N/A N/A |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
4,720 | $0 | 32,300 (Direct) |
View |
2024-04-04 Option Award |
2024-04-08 4:45 pm |
N/A 2034-04-03 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
60,000 | $0 | 60,000 (Direct) |
View |
2024-04-01 Option Award |
2024-04-03 8:11 pm |
N/A 2034-03-31 |
Metagenomi Inc. | MGX | Dere Willard H Director |
78,636 | $0 | 78,636 (Direct) |
View |
Ownership |
2024-02-08 7:11 pm |
N/A N/A |
Metagenomi Inc. | MGX | Dere Willard H Director |
0 | $0 | 51,275 (Direct) |
View |
2024-01-02 Option Award |
2024-01-04 4:11 pm |
N/A N/A |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
6,112 | $0 | 39,182 (Direct) |
View |
2023-10-02 Option Award |
2023-10-04 4:30 pm |
N/A N/A |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
11,011 | $0 | 33,070 (Direct) |
View |
2023-07-03 Option Award |
2023-07-06 4:19 pm |
N/A N/A |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
4,217 | $0 | 22,059 (Direct) |
View |
2023-06-22 Option Award |
2023-06-23 5:21 pm |
N/A 2033-06-21 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
35,000 | $0 | 35,000 (Direct) |
View |
2023-06-08 Option Award |
2023-06-12 4:13 pm |
N/A 2033-06-07 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
32,822 | $0 | 36,197 (Direct) |
View |
2023-05-23 Option Award |
2023-05-24 6:24 pm |
N/A N/A |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
4,190 | $0 | 27,580 (Direct) |
View |
2023-04-03 Option Award |
2023-04-05 5:12 pm |
N/A N/A |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
3,375 | $0 | 3,375 (Direct) |
View |
2022-08-15 Equity Swap |
2022-08-15 4:16 pm |
N/A N/A |
Radius Health Inc. | RDUS | Dere Willard H Director |
21,300 | $10 | 0 (Direct) |
View |
2022-07-05 Option Award |
2022-07-06 7:22 pm |
N/A N/A |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
31,746 | $3.15 | 31,746 (Direct) |
View |
2022-06-22 Option Award |
2022-06-24 4:30 pm |
N/A 2032-06-21 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
35,000 | $0 | 35,000 (Direct) |
View |
2022-06-09 Option Award |
2022-06-10 4:20 pm |
N/A 2032-06-08 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
45,000 | $0 | 45,000 (Direct) |
View |
2022-05-24 Option Award |
2022-05-26 8:29 pm |
N/A N/A |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
4,980 | $0 | 23,390 (Direct) |
View |
2022-01-14 Option Award |
2022-01-25 4:30 pm |
N/A 2032-01-14 |
Radius Health Inc. | RDUS | Dere Willard H Director |
15,500 | $0 | 33,195 (Direct) |
View |
2022-01-03 Option Award |
2022-01-05 5:01 pm |
N/A 2032-01-02 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
12,847 | $0 | 12,847 (Direct) |
View |
2021-06-16 Option Award |
2021-06-21 4:30 pm |
N/A 2031-06-15 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
23,000 | $0 | 23,000 (Direct) |
View |
2021-06-11 Option Award |
2021-06-15 6:03 pm |
N/A 2031-06-10 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
25,050 | $0 | 25,050 (Direct) |
View |
2021-05-25 Option Award |
2021-05-27 5:20 pm |
N/A N/A |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
5,120 | $0 | 18,410 (Direct) |
View |
2021-02-22 Option Award |
2021-02-23 5:53 pm |
N/A 2031-02-22 |
Radius Health Inc. | RDUS | Dere Willard H Director |
15,500 | $0 | 27,695 (Direct) |
View |
2021-01-21 Option Award |
2021-01-25 5:09 pm |
N/A 2031-01-21 |
Radius Health Inc. | RDUS | Dere Willard H Director |
20,000 | $0 | 20,000 (Direct) |
View |
2021-01-15 Option Award |
2021-01-20 7:01 pm |
N/A 2031-01-15 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
3,141 | $0 | 3,141 (Direct) |
View |
2020-06-25 Option Award |
2020-06-29 8:09 pm |
N/A 2030-06-25 |
Mersana Therapeutics Inc. | MRSN | Dere Willard H Director |
9,200 | $0 | 9,200 (Direct) |
View |
2020-06-18 Option Award |
2020-06-22 4:11 pm |
N/A 2030-06-17 |
Seres Therapeutics Inc. | MCRB | Dere Willard H Director |
30,000 | $0 | 30,000 (Direct) |
View |
2020-05-27 Option Award |
2020-05-29 4:23 pm |
N/A N/A |
BIOMARIN PHARMACEUTICAL INC | BMRN | Dere Willard H Director |
4,300 | $0 | 17,720 (Direct) |
View |