Insider Trading & Ownership of Robert W. Musslewhite

Location: Arlington, VA
Summary: The estimated net worth of Robert W. Musslewhite is at least $12,520,933 dollars as of 06 Nov 2025. Robert W. Musslewhite is the Chief Executive Officer, Director of Definitive Healthcare Corp. and owns shares of Definitive Healthcare Corp. (DH) stock worth about $10.81M. Robert W. Musslewhite is the Director of COSTAR GROUP, INC. and owns shares of COSTAR GROUP, INC. (CSGP) stock worth about $1.37M. Robert W. Musslewhite is the Director of CARDINAL HEALTH INC and owns shares of CARDINAL HEALTH INC (CAH) stock worth about $332.1K.
Signature: /s/ James E. Barnett, Attorney-in-fact
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Ownership of Robert W. Musslewhite

Symbol	Company	Relationship	Holdings Value	Report Period
DH	Definitive Healthcare Corp.	Chief Executive Officer, Director	$10,814,742	07 Jan 2024
CSGP	COSTAR GROUP, INC.	Director	$1,374,064	09 Sep 2025
CAH	CARDINAL HEALTH INC	Director	$332,127	05 Nov 2025

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.