COSTAR GROUP, INC. — Director's Dealing 2019

May 29, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COSTAR GROUP INC (CSGP)
CIK: 0001057352
Period of Report: 2019-05-27

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-05-27	Common Stock, par value $0.01 per share	F	27	$514.08	Disposed	14311	Direct
2019-05-28	Common Stock, par value $0.01 per share	F	93	$514.08	Disposed	14218	Direct

Footnotes

F1: Represents all shares of Common Stock owned, consisting of 1,206 shares of Common Stock and 12,539 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units.

F2: Represents all shares of Common Stock owned, consisting of 1,320 shares of Common Stock and 12,332 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units.