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 | SIMURO FRANK Chief Technology Officer |
6,452 | $0 | $0 | 534,731 (Direct) |
View |
2024-02-22 Sale |
2024-02-26 8:10 pm |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
7,200 | $0 | $0 | 432,923 (Direct) |
View |
2023-06-27 Sale |
2023-06-28 4:08 pm |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
92,300 | $89.65 | $8,274,695 | 264,483 (Direct) |
View |
2023-03-01 Sale |
2023-03-03 5:45 pm |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
35,220 | $70.09 | $2,468,570 | 337,577 (Direct) |
View |
2023-02-14 Sale |
2023-02-16 7:41 pm |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
14,279 | $0 | $0 | 365,062 (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 8:33 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
5,700 | $78.73 | 483,599 (Direct) |
View |
2025-03-01 Tax Withholding |
2025-03-03 7:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
12,432 | $76.25 | 489,299 (Direct) |
View |
2025-02-20 Option Award |
2025-02-24 6:48 pm |
N/A 2035-02-19 |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
163,640 | $0 | 534,731 (Direct) |
View |
2025-02-13 Tax Withholding |
2025-02-24 6:48 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
7,476 | $73.27 | 534,731 (Direct) |
View |
2025-02-15 Tax Withholding |
2025-02-19 4:57 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
5,485 | $74.06 | 385,019 (Direct) |
View |
2024-03-15 Tax Withholding |
2024-03-19 4:18 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
5,128 | $87.87 | 390,504 (Direct) |
View |
2024-03-01 Tax Withholding |
2024-03-05 4:34 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
6,091 | $87.03 | 395,632 (Direct) |
View |
2024-02-22 Option Award |
2024-02-26 8:10 pm |
N/A 2034-02-21 |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
157,680 | $0 | 432,923 (Direct) |
View |
2024-02-22 Tax Withholding |
2024-02-26 8:10 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
4,527 | $83.98 | 432,923 (Direct) |
View |
2024-02-15 Tax Withholding |
2024-02-20 5:05 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
4,233 | $82.32 | 286,970 (Direct) |
View |
2023-03-17 Exercise |
2023-03-21 5:09 pm |
N/A 2025-03-04 |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
23,590 | $0 | 379,203 (Direct) |
View |
2023-03-17 Exercise |
2023-03-21 5:09 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
4,880 | $20.49 | 379,203 (Direct) |
View |
2023-03-17 Exercise |
2023-03-21 5:09 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
2,920 | $34.21 | 379,203 (Direct) |
View |
2023-03-17 Exercise |
2023-03-21 5:09 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
10,320 | $19.37 | 379,203 (Direct) |
View |
2023-03-17 Exercise |
2023-03-21 5:09 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
5,470 | $18.28 | 379,203 (Direct) |
View |
2023-03-01 Exercise |
2023-03-03 5:45 pm |
N/A 2023-03-10 |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
35,220 | $0 | 337,577 (Direct) |
View |
2023-03-01 Exercise |
2023-03-03 5:45 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
35,220 | $10.22 | 337,577 (Direct) |
View |
2023-03-01 Tax Withholding |
2023-03-03 5:45 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
6,085 | $70.66 | 337,577 (Direct) |
View |
2023-02-14 Option Award |
2023-02-16 7:41 pm |
N/A 2033-02-13 |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
105,000 | $0 | 365,062 (Direct) |
View |
2023-02-15 Tax Withholding |
2023-02-16 7:41 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
2,261 | $76.78 | 365,062 (Direct) |
View |
Ownership |
2022-04-28 4:35 pm |
N/A N/A |
COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer |
0 | $0 | 468,432 (Direct) |
View |