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 |
2025-02-13 Sale |
2025-02-24 6:48 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
6,452 | $0 | $0 | 402,391 (Direct) |
View |
2024-05-16 Sale |
2024-05-17 4:08 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
2,500 | $88.43 | $221,075 | 282,856 (Direct) |
View |
2024-02-22 Sale |
2024-02-26 8:10 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
8,000 | $0 | $0 | 308,707 (Direct) |
View |
2023-06-07 Sale |
2023-06-09 4:05 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
30,000 | $80.24 | $2,407,200 | 237,887 (Direct) |
View |
2023-02-14 Sale |
2023-02-16 7:42 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
14,279 | $0 | $0 | 301,702 (Direct) |
View |
2022-02-16 Sale |
2022-02-18 6:58 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
7,141 | $0 | $0 | 283,877 (Direct) |
View |
2021-03-23 Sale |
2021-03-25 4:21 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
7,834 | $831.7 | $6,515,538 | 24,157 (Direct) |
View |
2021-02-28 Sale |
2021-03-02 4:25 pm |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
200 | $0 | $0 | 24,157 (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 |
2025-03-01 Tax Withholding |
2025-03-03 7:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
8,252 | $76.25 | 369,539 (Direct) |
View |
2025-02-20 Option Award |
2025-02-24 6:48 pm |
N/A 2035-02-19 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
122,200 | $0 | 402,391 (Direct) |
View |
2025-02-13 Tax Withholding |
2025-02-24 6:48 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
6,602 | $73.27 | 402,391 (Direct) |
View |
2025-02-15 Tax Withholding |
2025-02-19 4:56 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
2,349 | $74.06 | 293,245 (Direct) |
View |
2024-07-26 Option Award |
2024-07-30 4:12 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
12,738 | $0 | 295,594 (Direct) |
View |
2024-03-01 Tax Withholding |
2024-03-05 4:34 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
6,351 | $87.03 | 285,356 (Direct) |
View |
2024-02-22 Option Award |
2024-02-26 8:10 pm |
N/A 2034-02-21 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
86,160 | $0 | 308,707 (Direct) |
View |
2024-02-22 Tax Withholding |
2024-02-26 8:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
4,881 | $83.98 | 308,707 (Direct) |
View |
2024-02-15 Tax Withholding |
2024-02-20 5:04 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
2,349 | $82.32 | 235,428 (Direct) |
View |
2023-03-15 Tax Withholding |
2023-03-17 5:31 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
10,743 | $67.62 | 267,887 (Direct) |
View |
2023-03-01 Tax Withholding |
2023-03-03 5:57 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
6,388 | $70.66 | 283,014 (Direct) |
View |
2023-02-14 Option Award |
2023-02-16 7:42 pm |
N/A 2033-02-13 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
60,120 | $0 | 301,702 (Direct) |
View |
2023-02-15 Tax Withholding |
2023-02-16 7:42 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
2,259 | $76.78 | 301,702 (Direct) |
View |
2022-03-01 Tax Withholding |
2022-03-03 5:00 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
3,157 | $61.01 | 258,120 (Direct) |
View |
2022-02-16 Option Award |
2022-02-18 6:58 pm |
N/A 2032-02-15 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
67,140 | $0 | 283,877 (Direct) |
View |
2022-02-15 Tax Withholding |
2022-02-18 6:58 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
5,759 | $65.99 | 283,877 (Direct) |
View |
2022-02-16 Tax Withholding |
2022-02-18 6:58 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
11,933 | $67.69 | 283,877 (Direct) |
View |
2021-03-23 Exercise |
2021-03-25 4:21 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
5,067 | $342.13 | 24,157 (Direct) |
View |
2021-03-23 Exercise |
2021-03-25 4:21 pm |
N/A 2027-03-01 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
7,834 | $0 | 24,157 (Direct) |
View |
2021-03-23 Exercise |
2021-03-25 4:21 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
2,767 | $204.91 | 24,157 (Direct) |
View |
2021-02-28 Tax Withholding |
2021-03-02 4:25 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
1,578 | $823.76 | 24,157 (Direct) |
View |
2021-02-18 Option Award |
2021-02-19 5:17 pm |
N/A 2031-02-17 |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
6,400 | $0 | 27,835 (Direct) |
View |
2021-02-15 Tax Withholding |
2021-02-17 4:26 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
641 | $939.76 | 21,435 (Direct) |
View |
Ownership |
2020-10-05 4:20 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces |
0 | $0 | 37,710 (Direct) |
View |