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 |
2023-03-02 Sale |
2023-03-06 6:47 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
6,871 | $3.627 | $24,921 | 181,978 (Direct) |
View |
2023-02-08 Purchase |
2023-02-10 4:27 pm |
C4 Therapeutics Inc. | CCCC | Koppikar Utpal Director |
5,667 | $5.6 | $31,735 | 5,667 (Direct) |
View |
2023-02-07 Sale |
2023-02-09 5:00 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
2,485 | $5.46 | $13,568 | 188,849 (Direct) |
View |
2022-11-16 Sale |
2022-11-18 8:13 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
6,255 | $4.4902 | $28,086 | 191,334 (Direct) |
View |
2022-08-16 Sale |
2022-08-18 6:20 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
5,940 | $5.035 | $29,908 | 197,589 (Direct) |
View |
2022-06-08 Sale |
2022-06-10 4:20 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
5,853 | $5.63 | $32,952 | 203,529 (Direct) |
View |
2022-05-17 Sale |
2022-05-19 5:16 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
5,582 | $5.3162 | $29,675 | 207,592 (Direct) |
View |
2022-03-01 Sale |
2022-03-03 7:02 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
3,763 | $9.8564 | $37,090 | 328,281 (Direct) |
View |
2022-02-07 Sale |
2022-02-09 4:35 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
2,496 | $14.46 | $36,096 | 155,702 (Direct) |
View |
2021-11-16 Sale |
2021-11-18 5:53 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
3,655 | $17.12 | $62,562 | 157,714 (Direct) |
View |
2021-08-17 Sale |
2021-08-19 7:34 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
3,579 | $12.53 | $44,852 | 161,369 (Direct) |
View |
2021-06-08 Sale |
2021-06-09 4:06 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
5,820 | $14.06 | $81,829 | 164,948 (Direct) |
View |
2021-05-18 Sale |
2021-05-20 4:30 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
3,616 | $14.55 | $52,613 | 168,966 (Direct) |
View |
2021-03-26 Sale |
2021-03-30 5:19 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,761 | $14.58 | $25,675 | 172,582 (Direct) |
View |
2021-03-02 Sale |
2021-03-04 4:07 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,461 | $16.74 | $24,457 | 174,343 (Direct) |
View |
2021-02-08 Sale |
2021-02-09 7:59 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,759 | $20.39 | $35,866 | 130,546 (Direct) |
View |
2020-11-17 Sale |
2020-11-18 4:08 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,469 | $19.77 | $29,048 | 132,061 (Direct) |
View |
2020-08-18 Sale |
2020-08-20 7:38 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,496 | $12.09 | $18,087 | 133,530 (Direct) |
View |
2020-06-09 Sale |
2020-06-10 4:05 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
3,924 | $10.18 | $39,946 | 135,026 (Direct) |
View |
2020-05-18 Sale |
2020-05-20 6:11 pm |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
1,428 | $11.22 | $16,022 | 137,375 (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 |
2024-06-20 Option Award |
2024-06-21 4:08 pm |
N/A 2034-06-19 |
C4 Therapeutics Inc. | CCCC | Koppikar Utpal Director |
32,500 | $0 | 32,500 (Direct) |
View |
2023-06-15 Option Award |
2023-06-16 4:22 pm |
N/A 2033-06-14 |
C4 Therapeutics Inc. | CCCC | Koppikar Utpal Director |
26,000 | $0 | 26,000 (Direct) |
View |
2022-03-16 Option Award |
2022-03-17 4:20 pm |
N/A 2032-03-15 |
C4 Therapeutics Inc. | CCCC | Koppikar Utpal Director |
41,200 | $0 | 41,200 (Direct) |
View |
2022-03-01 Option Award |
2022-03-03 7:02 pm |
N/A 2032-02-28 |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
176,342 | $0 | 328,281 (Direct) |
View |
2021-07-09 Option Award |
2021-07-12 4:06 pm |
N/A 2031-07-08 |
Flexion Therapeutics Inc | FLXN | Koppikar Utpal Director |
32,000 | $0 | 32,000 (Direct) |
View |
2021-03-01 Option Award |
2021-03-03 5:14 pm |
N/A 2031-02-28 |
Atara Biotherapeutics Inc. | ATRA | Koppikar Utpal Chief Financial Officer |
113,572 | $0 | 244,118 (Direct) |
View |