6 Form 4 filings for CSGP between 2026-08-04 and 2026-08-10, from 5 filers. 4 discretionary (2 sales, 1 purchases), 2 routine grant or withholding filings. None state a filing-level total — that aggregate began on 2026-08-17 — so each row below shows only its largest transaction. Prices ran $29 to $31.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-10 | Cann Cynthia Cammett | sold | 4,788 | $30.78 | — | — | |
| 2026-08-10 | Hill John W | sold | 3,500 | $30.21 | — | — | |
| 2026-08-05 | FLORANCE ANDREW C | purchased | 83,300 | $29.89 | — | — | |
| 2026-08-04 | Rossmann Robin Jack at COSTAR GROUP, INC. filed a Form 4; no parseable transaction details were found in the filing. | ||||||
| 2026-08-04 | Cann Cynthia Cammett | — | 1,077 | $28.76 | — | — | |
| 2026-08-04 | SAINT FREDERICK G. | — | 1,436 | $28.76 | — | — | |
| 6 filings · 5 filers · disclosed totals only | $0 (0/6) | — | |||||