COSTAR GROUP INC (CSGP) Stock Ownership and Short Interest
USA - NASDAQ:CSGP - US22160N1090 - Common Stock
66.66 USD
-0.86 (-1.27%)
| Shares Outstanding | 423.65M |
| Float | 418.50M |
| Float Short Interest Percentage | 3.76% |
| Owners (insider) | 0.68% |
| Owners (institutional) | 105.15% |
| Owners (insider) change | -1.03% |
| Owners (institutional) change | -0.3% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Sep 9, 2025 | McCarthy Christine M | Grant | 2973 | 0.00 | $ 0.00 |
| Sep 9, 2025 | Sams Louise S | Grant | 3291 | 0.00 | $ 0.00 |
| Sep 9, 2025 | BERISFORD JOHN L | Grant | 2973 | 0.00 | $ 0.00 |
| Sep 9, 2025 | Hill John W | Grant | 3177 | 0.00 | $ 0.00 |
| Sep 9, 2025 | Musslewhite Robert W | Grant | 3121 | 0.00 | $ 0.00 |
| Sep 9, 2025 | Glaser Rachel C | Grant | 3143 | 0.00 | $ 0.00 |
| Sep 9, 2025 | Brunner Angelique G. | Grant | 3143 | 0.00 | $ 0.00 |
| Aug 28, 2025 | SAINT FREDERICK G. | Open Market Sale | 25000 | 90.33 | $ 2,258,250.00 |
| Aug 1, 2025 | SAINT FREDERICK G. | Option Excercise | 1436 | 95.19 | $ 136,692.84 |
| Aug 1, 2025 | Cann Cynthia Cammett | Option Excercise | 719 | 95.19 | $ 68,441.61 |
| Jul 28, 2025 | SAINT FREDERICK G. | Open Market Sale | 25000 | 93.23 | $ 2,330,750.00 |
| Jul 28, 2025 | Cann Cynthia Cammett | Open Market Sale | 2033 | 92.85 | $ 188,764.05 |
| Jul 1, 2025 | LOWN CHRISTIAN M. | Option Excercise | 4666 | 80.40 | $ 375,146.40 |
| Jun 15, 2025 | Cann Cynthia Cammett | Option Excercise | 461 | 81.16 | $ 37,414.76 |
| Jun 11, 2025 | SAINT FREDERICK G. | Open Market Sale | 25000 | 81.10 | $ 2,027,500.00 |
| Jun 1, 2025 | Ruggles Lisa | Option Excercise | 12 | 73.56 | $ 882.72 |
| Mar 15, 2025 | SIMURO FRANK | Option Excercise | 5700 | 78.73 | $ 448,761.00 |
| Mar 15, 2025 | Ruggles Lisa | Option Excercise | 1958 | 78.73 | $ 154,153.34 |
| Mar 15, 2025 | Cann Cynthia Cammett | Option Excercise | 1191 | 78.73 | $ 93,767.43 |
| Mar 15, 2025 | Boxer Gene | Option Excercise | 481 | 78.73 | $ 37,869.13 |
| Mar 15, 2025 | DESMARAIS MICHAEL J | Option Excercise | 3641 | 78.73 | $ 286,655.93 |
| Mar 10, 2025 | Cann Cynthia Cammett | Open Market Sale | 1749 | 79.90 | $ 139,745.10 |
| Mar 5, 2025 | Cann Cynthia Cammett | Grant | 1498 | $ 0.00 | |
| Mar 5, 2025 | Boxer Gene | Grant | 12492 | $ 0.00 | |
| Mar 5, 2025 | FLORANCE ANDREW C | Grant | 76232 | $ 0.00 | |
| Mar 5, 2025 | DESMARAIS MICHAEL J | Grant | 9026 | $ 0.00 | |
| Mar 1, 2025 | Ruggles Lisa | Option Excercise | 7410 | 76.25 | $ 565,012.50 |
| Mar 1, 2025 | DESMARAIS MICHAEL J | Option Excercise | 3893 | 76.25 | $ 296,841.25 |
| Mar 1, 2025 | SAINT FREDERICK G. | Option Excercise | 8252 | 76.25 | $ 629,215.00 |
| Mar 1, 2025 | Cann Cynthia Cammett | Option Excercise | 813 | 76.25 | $ 61,991.25 |
| Mar 1, 2025 | Boxer Gene | Option Excercise | 3644 | 76.25 | $ 277,855.00 |
| Mar 1, 2025 | FLORANCE ANDREW C | Option Excercise | 41296 | 76.25 | $ 3,148,820.00 |
| Mar 1, 2025 | SIMURO FRANK | Option Excercise | 12432 | 76.25 | $ 947,940.00 |
| Feb 27, 2025 | DESMARAIS MICHAEL J | Grant | 18828 | 0.00 | $ 0.00 |
| Feb 27, 2025 | Cann Cynthia Cammett | Grant | 4035 | 0.00 | $ 0.00 |
| Feb 27, 2025 | Boxer Gene | Grant | 26897 | 0.00 | $ 0.00 |
| Feb 20, 2025 | LOWN CHRISTIAN M. | Grant | 97600 | 0.00 | $ 0.00 |
| Feb 20, 2025 | FLORANCE ANDREW C | Grant | 451440 | 0.00 | $ 0.00 |
| Feb 20, 2025 | Ruggles Lisa | Grant | 65440 | 0.00 | $ 0.00 |
| Feb 20, 2025 | SIMURO FRANK | Grant | 130640 | 0.00 | $ 0.00 |
| Feb 20, 2025 | SAINT FREDERICK G. | Grant | 97600 | 0.00 | $ 0.00 |
| Feb 15, 2025 | SIMURO FRANK | Option Excercise | 5485 | 74.06 | $ 406,219.10 |
| Feb 15, 2025 | Ruggles Lisa | Option Excercise | 3531 | 74.06 | $ 261,505.86 |
| Feb 15, 2025 | FLORANCE ANDREW C | Option Excercise | 14235 | 74.06 | $ 1,054,244.10 |
| Feb 15, 2025 | SAINT FREDERICK G. | Option Excercise | 2349 | 74.06 | $ 173,966.94 |
| Dec 10, 2024 | Hill John W | Open Market Sale | 2735 | 76.76 | $ 209,938.60 |
| Dec 10, 2024 | Hill John W | Other Disposition | 195 | 0.00 | $ 0.00 |
| Dec 10, 2024 | KLEIN MICHAEL R | Other Disposition | 64909 | 0.00 | $ 0.00 |
| Nov 27, 2024 | NASSETTA CHRISTOPHER J | Open Market Sale | 1681 | 80.39 | $ 135,135.59 |
| Nov 26, 2024 | DESMARAIS MICHAEL J | Open Market Sale | 5500 | 79.88 | $ 439,340.00 |