Michael J. Desmarais - 15 Mar 2026 Form 4 Insider Report for COSTAR GROUP, INC. (CSGP)

Role
Chief Human Resources Officer
Signature
/s/ Gene Boxer, Attorney-in-Fact
Issuer symbol
CSGP
Transactions as of
15 Mar 2026
Net transactions value
$0
Form type
4
Filing time
17 Mar 2026, 16:12:16 UTC
Previous filing
11 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DESMARAIS MICHAEL J Chief Human Resources Officer C/O COSTAR GROUP, INC., 1201 WILSON BLVD., ARLINGTON /s/ Gene Boxer, Attorney-in-Fact 17 Mar 2026 0001925959

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CSGP Common Stock, par value $0.01 per share Tax liability -2,873 -3.2% $43.63* 87,725 15 Mar 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On March 13, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $43.63.