Insider Trading & Ownership of Quentin S. Blackford

Location: San Francisco, CA
Summary: The estimated net worth of Quentin S. Blackford is at least $42,264,979 dollars as of 27 Feb 2026. Quentin S. Blackford is the President and CEO, Director of iRhythm Holdings, Inc. and owns shares of iRhythm Holdings, Inc. (IRTC) stock worth about $32.48M. Quentin S. Blackford is the Director of Alphatec Holdings, Inc. and owns shares of Alphatec Holdings, Inc. (ATEC) stock worth about $7.2M. Quentin S. Blackford is the Chief Operating Officer of DEXCOM INC and owns shares of DEXCOM INC (DXCM) stock worth about $2.38M. Quentin S. Blackford is the Director of Axogen, Inc. and owns shares of Axogen, Inc. (AXGN) stock worth about $205K.
Signature: /s/ Marc Rosenbaum, attorney-in-fact
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Ownership of Quentin S. Blackford

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
IRTC	iRhythm Holdings, Inc.	President and CEO, Director	$32,475,052	-$10,846,697	-25%	25 Feb 2026
ATEC	Alphatec Holdings, Inc.	Director	$7,201,235			11 Jun 2025
DXCM	DEXCOM INC	Chief Operating Officer	$2,383,679			08 Sep 2021
AXGN	Axogen, Inc.	Director	$205,013			30 Mar 2022
FNA	Paragon 28, Inc.	Director	$0			21 Apr 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.