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 |
2024-07-31 Sale |
2025-03-14 4:47 pm |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
4,259 | $78.48 | $334,259 | 29,456 (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 |
2025-03-15 Tax Withholding |
2025-03-18 8:34 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
1,191 | $78.73 | 28,265 (Direct) |
View |
2025-03-05 Option Award |
2025-03-07 6:06 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
1,498 | $0 | 33,715 (Direct) |
View |
2025-02-27 Option Award |
2025-03-03 7:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
4,035 | $0 | 32,217 (Direct) |
View |
2025-03-01 Tax Withholding |
2025-03-03 7:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
813 | $76.25 | 32,217 (Direct) |
View |
2024-07-26 Option Award |
2024-07-30 4:12 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
9,553 | $0 | 28,995 (Direct) |
View |
Ownership |
2024-07-18 4:07 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | Cann Cynthia Cammett Chief Accounting Officer |
0 | $0 | 19,442 (Direct) |
View |