Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem 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>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-04-23 8:39 pm Sale | 2025-03-31 | 13G | CoStar Group, Inc. CSGP | BlackRock Inc. BLK | 31,820,259 7.500% | -4,706,990 (-12.89%) | Filing History |
| 2024-02-13 5:02 pm Purchase | 2023-12-29 | 13G | CoStar Group, Inc. CSGP | The Vanguard Group | 64,909,699 15.900% | 20,138,014 (+44.98%) | Filing History |
| 2024-01-25 1:48 pm Purchase | 2023-12-31 | 13G | CoStar Group, Inc. CSGP | BlackRock Inc. BLK | 36,527,249 8.900% | 4,897,326 (+15.48%) | Filing History |
| 2023-02-14 12:38 pm Sale | 2022-12-31 | 13G | CoStar Group, Inc. CSGP | T. Rowe Price Associates, Inc. | 6,678,381 1.600% | -20,974,833 (-75.85%) | Filing History |
| 2023-02-09 11:15 am Purchase | 2022-12-30 | 13G | CoStar Group, Inc. CSGP | The Vanguard Group | 44,771,685 11.010% | 1,774,063 (+4.13%) | Filing History |
| 2023-01-30 4:03 pm Purchase | 2022-12-31 | 13G | CoStar Group, Inc. CSGP | BlackRock Inc. BLK | 31,629,923 7.800% | 7,684,642 (+32.09%) | Filing History |
| 2022-10-11 10:07 am Purchase | 2022-09-30 | 13G | CoStar Group, Inc. CSGP | The Vanguard Group | 42,997,622 10.580% | 8,444,691 (+24.44%) | Filing History |
| 2022-02-14 2:34 pm Sale | 2021-12-31 | 13G | CoStar Group, Inc. CSGP | T. Rowe Price Associates, Inc. | 27,653,214 6.900% | -418,211,586 (-93.80%) | Filing History |
| 2022-02-09 3:43 pm Sale | 2021-12-31 | 13G | CoStar Group, Inc. CSGP | The Vanguard Group | 34,552,931 8.750% | -310,865,769 (-90.00%) | Filing History |
| 2022-02-01 5:08 pm Sale | 2021-12-31 | 13G | CoStar Group, Inc. CSGP | BlackRock Inc. BLK | 23,945,281 6.100% | -326,083,819 (-93.16%) | Filing History |
| 2021-02-16 12:23 pm Purchase | 2020-12-31 | 13G | CoStar Group, Inc. CSGP | T. Rowe Price Associates, Inc. | 445,864,800 11.300% | 14,447,100 (+3.35%) | Filing History |
| 2021-02-12 5:02 pm Sale | 2021-02-12 | 13G | CoStar Group, Inc. CSGP | BAMCO INC /NY/ | 193,458,300 4.910% | -33,818,400 (-14.88%) | Filing History |
| 2021-02-10 10:46 am Purchase | 2020-12-31 | 13G | CoStar Group, Inc. CSGP | The Vanguard Group | 345,418,700 8.760% | 11,936,200 (+3.58%) | Filing History |
| 2021-01-29 09:57 am Purchase | 2020-12-31 | 13G | CoStar Group, Inc. CSGP | BlackRock Inc. BLK | 350,029,100 8.900% | 22,788,600 (+6.96%) | Filing History |