COSTAR GROUP, INC. — Director's Dealing 2026

Mar 17, 2026

SEC Form 4/A — Form 4/A

Issuer: COSTAR GROUP, INC. (CSGP)
CIK: 0001057352
Period of Report: 2026-03-15

Reporting Person: Boxer Gene (General Counsel and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-15	Common Stock, par value $0.01 per share	F	482	$43.63	Disposed	95463	Direct

Footnotes

F1: This amount reflects a correction due to administrative error.

F2: On March 13, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $43.63.