CIK 0001057352 · Large accelerated filer
COSTAR GROUP, INC.
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- CSGP
- Exchange
- Nasdaq
- Industry
- Services-Business Services, NEC
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 522091509
- Phone
- 2023466500
- Business address
- 1201 WILSON BLVD., ARLINGTON, VA, 22209
- Former names
- COSTAR GROUP, INC., COSTAR GROUP INC, REALTY INFORMATION GROUP INC
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-07 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −4,788 | $30.78 | $147K | 18,822 |
| 2026-08-05 | Hill John W Director | Sale | −3,500 | $30.21 | $106K | 22,993 |
| 2025-11-13 | Hill John W Director | Sale | −2,250 | $68.68 | $155K | 18,231 |
| 2025-11-13 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −1,841 | $68.79 | $127K | 23,211 |
| 2025-08-28 | SAINT FREDERICK G. President, Marketplaces | Sale | −25,000 | $90.33 | $2.3M | 293,103 |
| 2025-07-28 | SAINT FREDERICK G. President, Marketplaces | Sale | −25,000 | $93.23 | $2.3M | 319,539 |
| 2025-07-28 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −2,033 | $92.85 | $189K | 25,771 |
| 2025-06-11 | SAINT FREDERICK G. President, Marketplaces | Sale | −25,000 | $81.10 | $2.0M | 344,539 |
| 2025-03-10 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −1,749 | $79.90 | $140K | 29,456 |
| 2024-12-10 | Hill John W Director | Sale | −2,735 | $76.76 | $210K | 17,499 |
| 2024-11-27 | NASSETTA CHRISTOPHER J Director | Sale | −1,681 | $80.39 | $135K | 229,715 |
| 2024-11-26 | DESMARAIS MICHAEL J Chief Human Resources Officer | Sale | −5,500 | $79.88 | $439K | 58,798 |
| 2024-11-11 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −1,310 | $76.85 | $101K | 26,485 |
| 2024-10-25 | KLEIN MICHAEL R Director | Sale | −71,633 | $74.69 | $5.4M | 1,913,501 |
| 2024-07-31 | Cann Cynthia Cammett Chief Accounting Officer | Sale | −1,200 | $78.20 | $94K | 27,795 |
| 2024-07-30 | Hill John W Director | Sale | −1,325 | $78.16 | $104K | 16,545 |
| 2024-05-16 | SAINT FREDERICK G. President, Marketplaces | Sale | −2,500 | $88.43 | $221K | 282,856 |
| 2024-05-09 | Ruggles Lisa Senior VP, Global Operations | Sale | −20,000 | $91.15 | $1.8M | 172,616 |
| 2024-04-26 | DESMARAIS MICHAEL J Chief Human Resources Officer | Sale | −3,800 | $92.67 | $352K | 64,087 |
| 2024-04-26 | Wheeler Scott T Chief Financial Officer | Sale | −122,736 | $92.61 | $11.4M | 303,417 |
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