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 |
2023-06-28 Sale | 2023-06-30 4:06 pm | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 21,530 | $89.3 | $1,922,629 | 329,228 (Indirect Direct) | View |
2023-06-30 Sale | 2023-06-30 4:05 pm | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 30,474 | $91.42 | $2,785,933 | 156,208 (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 |
2023-06-26 Sale | 2023-06-28 4:07 pm | COSTAR GROUP INC. | CSGP | Hill John W Director | 1,500 | $86.57 | $129,855 | 16,934 (Direct) | View |
2023-06-12 Sale | 2023-06-14 6:12 pm | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 24,670 | $80.68 | $1,990,376 | 350,758 (Indirect 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 |
2023-04-28 Sale | 2023-05-02 5:45 pm | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 360,530 | $76.77 | $27,677,888 | 974,309 (Direct) | View |
2023-03-31 Sale | 2023-04-04 4:39 pm | COSTAR GROUP INC. | CSGP | Hill John W Director | 2,300 | $68.5 | $157,550 | 18,434 (Direct) | View |
2023-03-08 Sale | 2023-03-09 4:57 pm | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 5,600 | $70.36 | $394,016 | 44,846 (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 |
2022-11-03 Sale | 2022-11-04 4:27 pm | COSTAR GROUP INC. | CSGP | Hill John W Director | 3,650 | $78.92 | $288,058 | 20,734 (Direct) | View |
2022-10-28 Sale | 2022-10-31 4:17 pm | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 1,296 | $82.81 | $107,322 | 36,900 (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 |
Ownership | 2023-08-02 09:14 am | N/A N/A | COSTAR GROUP INC. | CSGP | Brunner Angelique G. Director | 0 | $0 | 0 (Direct) | View |
2023-06-01 Tax Withholding | 2023-06-05 4:10 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 11 | $79.4 | 186,682 (Direct) | View |
2023-05-23 Gift | 2023-05-25 4:47 pm | N/A N/A | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 3,977 | $0 | 2,059,670 (Direct) | View |
2023-05-02 Gift | 2023-05-05 4:15 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 5,498 | $0 | 368,330 (Direct) | View |
2023-04-28 Exercise | 2023-05-02 5:45 pm | N/A 2026-03-10 | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 360,530 | $0 | 974,309 (Direct) | View |
2023-04-28 Exercise | 2023-05-02 5:45 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 360,530 | $18.28 | 974,309 (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 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 | 5,470 | $18.28 | 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 |
2023-03-15 Tax Withholding | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 2,485 | $67.62 | 186,693 (Direct) | View |
2023-03-15 Tax Withholding | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 9,261 | $67.62 | 974,309 (Direct) | View |
2023-03-15 Option Award | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 37,844 | $0 | 974,309 (Direct) | View |
2023-03-15 Tax Withholding | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 2,210 | $67.62 | 45,928 (Direct) | View |
2023-03-15 Option Award | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 3,292 | $0 | 45,928 (Direct) | View |
2023-03-15 Tax Withholding | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 11,975 | $67.62 | 375,428 (Direct) | View |
2023-03-15 Option Award | 2023-03-17 5:32 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 26,534 | $0 | 375,428 (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 |
2023-03-15 Tax Withholding | 2023-03-17 5:31 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Boxer Gene General Counsel and Secretary | 371 | $67.62 | 18,035 (Direct) | View |
2023-03-01 Tax Withholding | 2023-03-03 6:00 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 9,972 | $70.66 | 368,173 (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 |
2023-03-01 Tax Withholding | 2023-03-03 5:54 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 6,085 | $70.66 | 193,562 (Direct) | View |
2023-03-01 Tax Withholding | 2023-03-03 5:51 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 24,224 | $70.66 | 964,087 (Direct) | View |
2023-03-01 Tax Withholding | 2023-03-03 5:48 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 593 | $70.66 | 50,446 (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 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 |
2023-03-01 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 |
2023-02-24 Option Award | 2023-02-27 5:05 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Boxer Gene General Counsel and Secretary | 14,139 | $70.73 | 18,406 (Direct) | View |
2023-02-24 Option Award | 2023-02-27 4:58 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 14,139 | $70.73 | 51,039 (Direct) | View |
2023-02-14 Option Award | 2023-02-16 7:43 pm | N/A 2033-02-13 | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 60,120 | $0 | 211,947 (Direct) | View |
2023-02-14 Disposition | 2023-02-16 7:43 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 14,279 | $0 | 211,947 (Direct) | View |
2023-02-15 Tax Withholding | 2023-02-16 7:43 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Ruggles Lisa Senior VP, Global Research | 2,259 | $76.78 | 211,947 (Direct) | View |
2023-02-14 Option Award | 2023-02-16 7:42 pm | N/A 2033-02-13 | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 105,000 | $0 | 399,545 (Direct) | View |
2023-02-14 Disposition | 2023-02-16 7:42 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 21,418 | $0 | 399,545 (Direct) | View |
2023-02-15 Tax Withholding | 2023-02-16 7:42 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 4,141 | $76.78 | 399,545 (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 |
2023-02-14 Disposition | 2023-02-16 7:42 pm | N/A N/A | COSTAR GROUP INC. | CSGP | SAINT FREDERICK G. President, Marketplaces | 14,279 | $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 |
2023-02-14 Option Award | 2023-02-16 7:42 pm | N/A 2033-02-13 | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 359,300 | $0 | 1,061,711 (Direct) | View |
2023-02-14 Disposition | 2023-02-16 7:42 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 68,537 | $0 | 1,061,711 (Direct) | View |
2023-02-15 Tax Withholding | 2023-02-16 7:42 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 12,471 | $76.78 | 1,061,711 (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 |
2023-02-14 Disposition | 2023-02-16 7:41 pm | N/A N/A | COSTAR GROUP INC. | CSGP | SIMURO FRANK Chief Technology Officer | 14,279 | $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 |
2022-10-28 Ownership | 2023-02-15 4:43 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 2,610 | $0 | 320,104 (Direct) | View |
Ownership | 2023-02-15 4:43 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Wheeler Scott T Chief Financial Officer | 0 | $0 | 320,104 (Indirect) | View |
2022-11-01 Ownership | 2023-02-15 4:40 pm | N/A N/A | COSTAR GROUP INC. | CSGP | KLEIN MICHAEL R Director | 15,000 | $0 | 2,063,647 (Direct) | View |
2022-10-01 Tax Withholding | 2022-10-04 5:56 pm | N/A N/A | COSTAR GROUP INC. | CSGP | DESMARAIS MICHAEL J Chief Human Resources Officer | 1,423 | $69.65 | 38,196 (Direct) | View |
2022-09-14 Option Award | 2022-09-15 4:57 pm | N/A N/A | COSTAR GROUP INC. | CSGP | FLORANCE ANDREW C President and CEO | 48 | $0 | 783,419 (Direct) | View |
2022-09-14 Option Award | 2022-09-15 4:56 pm | N/A N/A | COSTAR GROUP INC. | CSGP | Sams Louise S Director | 3,583 | $0 | 8,883 (Direct) | View |