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 |
| 2025-02-13 Sale | 2025-02-24 6:48 pm | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 28,896 | $0 | $0 | 1,751,896 (Direct) | View |
| 2025-02-13 Sale | 2025-02-24 6:48 pm | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Operations | 6,452 | $0 | $0 | 237,081 (Direct) | View |
| 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 |
| 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 |
| 2024-12-10 Sale | 2024-12-12 4:16 pm | COSTAR GROUP INC. | CSGP | Hill John W Director | 2,735 | $76.76 | $209,939 | 17,304 (Direct) | View |
| 2024-11-27 Sale | 2024-12-02 4:55 pm | COSTAR GROUP INC. | CSGP | NASSETTA CHRISTOPHER J Director | 1,681 | $80.39 | $135,136 | 275,715 (Indirect Direct) | View |
| 2024-11-26 Sale | 2024-11-27 6:33 pm | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 5,500 | $79.88 | $439,340 | 58,798 (Direct) | View |
| 2024-10-25 Sale | 2024-10-28 5:14 pm | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 71,633 | $74.69 | $5,350,269 | 1,913,501 (Direct) | View |
| 2024-10-25 Purchase | 2024-10-28 5:13 pm | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 14,731 | $74.67 | $1,099,966 | 1,263,098 (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 | Ruggles Lisa Senior VP, Global Operations | 1,958 | $78.73 | 211,213 (Direct) | View |
| 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 |
| 2025-03-15 Tax Withholding | 2025-03-18 8:34 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Boxer Gene General Counsel and Secretary | 481 | $78.73 | 78,572 (Direct) | View |
| 2025-03-15 Tax Withholding | 2025-03-18 8:33 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 3,641 | $78.73 | 79,118 (Direct) | View |
| 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 |
| 2025-03-05 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 |
| 2025-03-05 Option Award | 2025-03-07 6:06 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Boxer Gene General Counsel and Secretary | 12,492 | $0 | 79,053 (Direct) | View |
| 2025-03-05 Option Award | 2025-03-07 6:06 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 76,232 | $0 | 1,672,832 (Direct) | View |
| 2025-03-05 Option Award | 2025-03-07 6:06 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 9,026 | $0 | 82,759 (Direct) | View |
| 2025-03-01 Tax Withholding | 2025-03-03 7:11 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Operations | 7,410 | $76.25 | 213,171 (Direct) | View |
| 2025-03-01 Tax Withholding | 2025-03-03 7:10 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 3,893 | $76.25 | 73,733 (Direct) | View |
| 2025-02-27 Option Award | 2025-03-03 7:10 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 18,828 | $0 | 73,733 (Direct) | View |
| 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 |
| 2025-03-01 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 |
| 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 | Boxer Gene General Counsel and Secretary | 3,644 | $76.25 | 66,561 (Direct) | View |
| 2025-02-27 Option Award | 2025-03-03 7:10 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Boxer Gene General Counsel and Secretary | 26,897 | $0 | 66,561 (Direct) | View |
| 2025-03-01 Tax Withholding | 2025-03-03 7:10 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 41,296 | $76.25 | 1,596,600 (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 | LOWN CHRISTIAN M. Chief Financial Officer | 122,200 | $0 | 159,423 (Direct) | View |
| 2025-02-13 Tax Withholding | 2025-02-24 6:48 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 33,511 | $73.27 | 1,751,896 (Direct) | View |
| 2025-02-20 Option Award | 2025-02-24 6:48 pm | N/A 2035-02-19 | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 565,440 | $0 | 1,751,896 (Direct) | View |
| 2025-02-13 Tax Withholding | 2025-02-24 6:48 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Operations | 7,481 | $73.27 | 237,081 (Direct) | View |
| 2025-02-20 Option Award | 2025-02-24 6:48 pm | N/A 2035-02-19 | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Operations | 81,940 | $0 | 237,081 (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 |
| 2025-02-20 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 | SAINT FREDERICK G. President, Marketplaces | 6,602 | $73.27 | 402,391 (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 |
| 2025-02-15 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 |
| 2025-02-15 Tax Withholding | 2025-02-19 4:57 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Operations | 3,531 | $74.06 | 169,074 (Direct) | View |
| 2025-02-15 Tax Withholding | 2025-02-19 4:56 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 14,235 | $74.06 | 1,248,863 (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 |
| 2024-12-10 Gift | 2024-12-12 4:16 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Hill John W Director | 195 | $0 | 17,304 (Direct) | View |
| 2024-12-10 Gift | 2024-12-12 4:16 pm | N/A N/A | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 64,909 | $0 | 1,848,592 (Direct) | View |
| 2024-10-25 Gift | 2024-10-28 5:14 pm | N/A N/A | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 5,872 | $0 | 1,913,501 (Direct) | View |
| 2024-07-17 Option Award | 2024-08-05 4:14 pm | N/A N/A | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 3,781 | $0 | 1,991,006 (Direct) | View |
| 2024-07-17 Option Award | 2024-08-05 4:14 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Brunner Angelique G. Director | 3,491 | $0 | 7,023 (Direct) | View |
| 2024-07-17 Option Award | 2024-08-05 4:13 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Sams Louise S Director | 3,491 | $0 | 16,118 (Direct) | View |
| 2024-07-17 Option Award | 2024-08-05 4:13 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Musslewhite Robert W Director | 3,293 | $0 | 15,156 (Direct) | View |
| 2024-07-17 Option Award | 2024-08-05 4:13 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Kaplan Laura Cox Director | 3,452 | $0 | 17,835 (Direct) | View |