COSTAR GROUP INC (CSGP)
US22160N1090 - Common Stock
| Shares Outstanding | 408.41M |
| Float | 403.57M |
| Owners (insider) | 1.35% |
| Owners (institutional) | 95.98% |
| Owners (insider) change | 8.2% |
| Owners (institutional) change | -0.04% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Mar 15, 2024 | DESMARAIS MICHAEL J | Option Excercise | 2267 | 87.87 | $ 199,201.29 |
| Mar 15, 2024 | SIMURO FRANK | Option Excercise | 5128 | 87.87 | $ 450,597.36 |
| Mar 15, 2024 | Ruggles Lisa | Option Excercise | 666 | 87.87 | $ 58,521.42 |
| Mar 15, 2024 | Wheeler Scott T | Option Excercise | 8444 | 87.87 | $ 741,974.28 |
| Mar 15, 2024 | Boxer Gene | Option Excercise | 372 | 87.87 | $ 32,687.64 |
| Mar 12, 2024 | Wheeler Scott T | Other Disposition | 2374 | 0.00 | $ 0.00 |
| Mar 1, 2024 | FLORANCE ANDREW C | Option Excercise | 24228 | 87.03 | $ 2,108,562.84 |
| Mar 1, 2024 | SAINT FREDERICK G. | Option Excercise | 6351 | 87.03 | $ 552,727.53 |
| Mar 1, 2024 | SIMURO FRANK | Option Excercise | 6091 | 87.03 | $ 530,099.73 |
| Mar 1, 2024 | Wheeler Scott T | Grant | 21308 | $ 0.00 | |
| Mar 1, 2024 | Wheeler Scott T | Option Excercise | 10121 | 87.03 | $ 880,830.63 |
| Mar 1, 2024 | Boxer Gene | Grant | 8694 | $ 0.00 | |
| Mar 1, 2024 | Boxer Gene | Option Excercise | 1238 | 87.03 | $ 107,743.14 |
| Mar 1, 2024 | DESMARAIS MICHAEL J | Grant | 6924 | $ 0.00 | |
| Mar 1, 2024 | DESMARAIS MICHAEL J | Option Excercise | 1829 | 87.03 | $ 159,177.87 |
| Mar 1, 2024 | Ruggles Lisa | Option Excercise | 6091 | 87.03 | $ 530,099.73 |
| Feb 22, 2024 | SAINT FREDERICK G. | Grant | 69160 | 0.00 | $ 0.00 |
| Feb 22, 2024 | Wheeler Scott T | Other Disposition | 10400 | 0.00 | $ 0.00 |
| Feb 22, 2024 | Wheeler Scott T | Option Excercise | 5347 | 83.98 | $ 449,041.06 |
| Feb 22, 2024 | DESMARAIS MICHAEL J | Grant | 16976 | 0.00 | $ 0.00 |
| Feb 22, 2024 | Ruggles Lisa | Other Disposition | 7200 | 0.00 | $ 0.00 |
| Feb 22, 2024 | Ruggles Lisa | Option Excercise | 4428 | 83.98 | $ 371,863.44 |
| Feb 22, 2024 | Ruggles Lisa | Grant | 57560 | 0.00 | $ 0.00 |
| Feb 22, 2024 | Boxer Gene | Grant | 18189 | 0.00 | $ 0.00 |
| Feb 22, 2024 | FLORANCE ANDREW C | Other Disposition | 31200 | 0.00 | $ 0.00 |
| Feb 22, 2024 | FLORANCE ANDREW C | Option Excercise | 22058 | 83.98 | $ 1,852,430.84 |
| Feb 22, 2024 | FLORANCE ANDREW C | Grant | 367840 | 0.00 | $ 0.00 |
| Feb 22, 2024 | SIMURO FRANK | Other Disposition | 7200 | 0.00 | $ 0.00 |
| Feb 22, 2024 | SIMURO FRANK | Option Excercise | 4527 | 83.98 | $ 380,177.46 |
| Feb 22, 2024 | SIMURO FRANK | Grant | 126480 | 0.00 | $ 0.00 |
| Feb 22, 2024 | SAINT FREDERICK G. | Other Disposition | 8000 | 0.00 | $ 0.00 |
| Feb 22, 2024 | SAINT FREDERICK G. | Option Excercise | 4881 | 83.98 | $ 409,906.38 |
| Feb 15, 2024 | Wheeler Scott T | Option Excercise | 3462 | 82.32 | $ 284,991.84 |
| Feb 15, 2024 | FLORANCE ANDREW C | Option Excercise | 16296 | 82.32 | $ 1,341,486.72 |
| Feb 15, 2024 | SIMURO FRANK | Option Excercise | 4233 | 82.32 | $ 348,460.56 |
| Feb 15, 2024 | Ruggles Lisa | Option Excercise | 2367 | 82.32 | $ 194,851.44 |
| Feb 15, 2024 | SAINT FREDERICK G. | Option Excercise | 2349 | 82.32 | $ 193,369.68 |
| Nov 29, 2023 | KLEIN MICHAEL R | Other Disposition | 60000 | 0.00 | $ 0.00 |
| Nov 28, 2023 | Hill John W | Open Market Sale | 3020 | 84.07 | $ 253,891.40 |
| Nov 8, 2023 | NASSETTA CHRISTOPHER J | Open Market Sale | 1500 | 77.86 | $ 116,790.00 |
| Oct 30, 2023 | Hill John W | Grant | 3956 | 0.00 | $ 0.00 |
| Oct 30, 2023 | Brunner Angelique G. | Grant | 3532 | 0.00 | $ 0.00 |
| Oct 30, 2023 | Kaplan Laura Cox | Grant | 3702 | 0.00 | $ 0.00 |
| Oct 30, 2023 | Glosserman Michael J | Grant | 3913 | 0.00 | $ 0.00 |
| Oct 30, 2023 | NASSETTA CHRISTOPHER J | Grant | 4055 | 0.00 | $ 0.00 |
| Oct 30, 2023 | Sams Louise S | Grant | 3744 | 0.00 | $ 0.00 |
| Oct 30, 2023 | KLEIN MICHAEL R | Grant | 4055 | 0.00 | $ 0.00 |
| Oct 30, 2023 | Musslewhite Robert W | Grant | 3532 | 0.00 | $ 0.00 |
| Oct 1, 2023 | DESMARAIS MICHAEL J | Option Excercise | 1663 | 76.89 | $ 127,868.07 |
| Jun 30, 2023 | Ruggles Lisa | Open Market Sale | 30474 | 91.42 | $ 2,785,933.08 |
| Jun 28, 2023 | Wheeler Scott T | Open Market Sale | 21530 | 89.30 | $ 1,922,629.00 |
| Jun 27, 2023 | SIMURO FRANK | Open Market Sale | 92300 | 89.65 | $ 8,274,695.00 |
| Jun 26, 2023 | Hill John W | Open Market Sale | 1500 | 86.57 | $ 129,855.00 |
| Jun 12, 2023 | Wheeler Scott T | Open Market Sale | 24670 | 80.68 | $ 1,990,375.60 |
| Jun 7, 2023 | SAINT FREDERICK G. | Open Market Sale | 30000 | 80.24 | $ 2,407,200.00 |
| Jun 1, 2023 | Ruggles Lisa | Option Excercise | 11 | 79.40 | $ 873.40 |
| May 23, 2023 | KLEIN MICHAEL R | Other Disposition | 3977 | 0.00 | $ 0.00 |
| May 2, 2023 | Wheeler Scott T | Other Disposition | 6392 | 0.00 | $ 0.00 |