4processed

Form 4 — Insider Transaction

COSTAR GROUP, INC.(CSGP)

Filing Date

June 23, 2026

Accepted

June 23, 2026

Accession No.

0001796961-26-000004

CIK

0001057352

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Sams Louise SOther8.3K$028.7KCommon Stock, par value $0.01 per shareJun 23, 2026