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 |
2025-02-05 Sale |
2025-02-05 8:31 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO & President |
155,333 | $0.78 | $121,160 | 1,736,883 (Direct) |
View |
2024-08-27 Sale |
2024-08-29 6:36 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO & President |
2,757 | $1.35 | $3,722 | 1,140,809 (Direct) |
View |
2024-08-02 Sale |
2024-08-06 7:56 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO and President |
32,441 | $1.3146 | $42,646 | 1,143,566 (Direct) |
View |
2024-02-02 Sale |
2024-02-05 8:40 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO and President |
75,994 | $1.4175 | $107,719 | 1,176,007 (Direct) |
View |
2023-08-28 Sale |
2023-08-30 4:20 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO and President |
6,017 | $1.2877 | $7,748 | 572,500 (Direct) |
View |
2023-02-02 Sale |
2023-02-03 7:41 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
9,504 | $1.8279 | $17,372 | 312,517 (Direct) |
View |
2022-08-29 Sale |
2022-08-30 5:00 pm |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
6,017 | $0.8938 | $5,378 | 56,064 (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 |
2025-02-03 Option Award |
2025-02-05 8:31 pm |
N/A N/A |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO & President |
751,407 | $0 | 1,736,883 (Direct) |
View |
2024-02-01 Option Award |
2024-02-05 8:40 pm |
N/A N/A |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO and President |
679,501 | $0 | 1,176,007 (Direct) |
View |
2023-08-01 Option Award |
2023-08-03 4:10 pm |
N/A N/A |
Spero Therapeutics Inc. | SPRO | Shukla Sath CEO and President |
266,000 | $0 | 578,517 (Direct) |
View |
2023-02-01 Option Award |
2023-02-03 7:41 pm |
N/A N/A |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
265,957 | $0 | 312,517 (Direct) |
View |
2022-02-01 Option Award |
2022-02-03 4:19 pm |
N/A 2032-02-01 |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
91,204 | $0 | 115,271 (Direct) |
View |
2021-08-26 Option Award |
2021-08-30 4:15 pm |
N/A N/A |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
24,067 | $0 | 24,067 (Direct) |
View |
2021-01-04 Option Award |
2021-01-05 4:20 pm |
N/A 2031-01-04 |
Spero Therapeutics Inc. | SPRO | Shukla Sath Chief Financial Officer |
75,000 | $0 | 75,000 (Direct) |
View |