CIK 0001057352 · Large accelerated filer
COSTAR GROUP, INC.
Sign in to watch- Ticker
- 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 |
|---|---|---|---|---|---|---|
| 2026-08-04 | FLORANCE ANDREW C Founder and CEO | Purchase | +83,300 | $29.89 | $2.5M | 1,806,165.03 |
| 2026-05-01 | FLORANCE ANDREW C President and CEO | Purchase | +68,330 | $35.17 | $2.4M | 1,719,765.03 |
| 2026-05-01 | FLORANCE ANDREW C President and CEO | Purchase | +3,100 | $35.82 | $111K | 1,722,865.03 |
| 2026-03-06 | Sams Louise S Director | Purchase | +1,000 | $48.36 | $48K | 20,409 |
| 2026-03-02 | SAINT FREDERICK G. President, Marketplaces | Purchase | +20,000 | $45.33 | $907K | 279,851 |
| 2026-03-02 | Glaser Rachel C Director | Purchase | +1,000 | $44.94 | $45K | 4,157 |
| 2026-02-27 | FLORANCE ANDREW C President and CEO | Purchase | +55,720 | $44.52 | $2.5M | 1,586,866.03 |
| 2024-10-25 | FLORANCE ANDREW C President and CEO | Purchase | +14,731.03 | $74.67 | $1.1M | 1,263,098.03 |
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