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 |
2025-03-17 Sale |
2025-03-19 4:47 pm |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
7,000 | $17.17 | $120,206 | 336,507 (Direct) |
View |
2022-09-30 Sale |
2022-10-04 5:07 pm |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
7,568 | $4.0028 | $30,293 | 222,932 (Direct) |
View |
2021-06-02 Purchase |
2021-06-04 5:00 pm |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
500 | $20 | $10,000 | 584,228 (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 |
2025-03-17 Exercise |
2025-03-19 4:47 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
3,500 | $3.85 | 336,507 (Direct) |
View |
2025-03-17 Exercise |
2025-03-19 4:47 pm |
N/A 2033-02-01 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
3,500 | $0 | 336,507 (Direct) |
View |
2025-02-01 Tax Withholding |
2025-02-04 4:55 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
13,324 | $16.92 | 228,507 (Direct) |
View |
2024-12-31 Tax Withholding |
2024-12-31 4:33 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,385 | $16.35 | 241,831 (Direct) |
View |
2024-09-30 Tax Withholding |
2024-10-02 4:33 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,385 | $15.79 | 252,216 (Direct) |
View |
2024-06-30 Tax Withholding |
2024-07-02 4:35 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,385 | $9.03 | 262,601 (Direct) |
View |
2024-03-31 Tax Withholding |
2024-04-02 4:19 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,385 | $11.3 | 272,986 (Direct) |
View |
2024-02-01 Tax Withholding |
2024-02-02 5:10 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
9,503 | $8.19 | 433,371 (Direct) |
View |
2024-02-01 Option Award |
2024-02-02 5:10 pm |
N/A 2034-02-01 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
187,500 | $0 | 433,371 (Direct) |
View |
2023-12-31 Tax Withholding |
2024-01-02 7:46 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,419 | $7.96 | 255,374 (Direct) |
View |
2023-09-30 Tax Withholding |
2023-10-03 4:51 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,419 | $6.47 | 265,793 (Direct) |
View |
2023-06-30 Tax Withholding |
2023-07-03 5:35 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
10,419 | $5.9001 | 276,212 (Direct) |
View |
2023-03-31 Tax Withholding |
2023-04-04 5:05 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
6,969 | $3.9 | 286,631 (Direct) |
View |
2023-02-01 Option Award |
2023-02-03 5:05 pm |
N/A 2033-02-01 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
192,200 | $0 | 408,600 (Direct) |
View |
2022-09-30 Tax Withholding |
2023-01-13 5:44 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
9,211 | $4.25 | 221,289 (Direct) |
View |
2022-12-31 Tax Withholding |
2023-01-04 7:18 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
4,889 | $3.1 | 225,611 (Direct) |
View |
2022-07-01 Option Award |
2022-07-06 6:15 pm |
N/A N/A |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
230,000 | $0 | 230,500 (Direct) |
View |
2022-02-01 Option Award |
2022-02-03 6:30 pm |
N/A 2032-02-01 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
230,000 | $0 | 230,000 (Direct) |
View |
2021-04-20 Option Award |
2021-06-04 5:00 pm |
N/A 2031-04-20 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
583,728 | $0 | 584,228 (Direct) |
View |
Ownership |
2021-05-27 8:26 pm |
N/A 2031-04-20 |
Centessa Pharmaceuticals plc | CNTA | CHAO DAVID M Chief Administrative Officer |
0 | $0 | 583,728 (Direct) |
View |