COSTAR GROUP, INC. — Director's Dealing 2021

May 20, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COSTAR GROUP, INC. (CSGP)
CIK: 0001057352
Period of Report: 2021-05-20

Reporting Person: Ruggles Lisa (Senior VP, Global Research)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-20	Common Stock, par value $0.01 per share	A	10	$841.88	Acquired	16306	Direct

Footnotes

F1: Represents all shares of Common Stock owned, consisting of 3,425 shares of Common Stock and 11,717 shares of Common Stock subject to unvested Restricted Stock grants, 582 shares of Deferred Stock Units and 582 shares of unvested Restricted Stock Units.