Info
Insider Ownership

Insider Trading & Ownership of Michael J. Desmarais

Location: Washington, DC
Summary: The estimated net worth of Michael J. Desmarais is at least $4,336,926 dollars as of 11 Mar 2026. Michael J. Desmarais is the Chief Human Resources Officer of COSTAR GROUP, INC. and owns shares of COSTAR GROUP, INC. (CSGP) stock worth about $4.34M.
Signature: /s/ Gene Boxer, Attorney-in-Fact
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Ownership of Michael J. Desmarais

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
CSGP	COSTAR GROUP, INC.	Chief Human Resources Officer	$4,336,926			10 Mar 2026

Insider Transactions Reported by Michael J. Desmarais:

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.