Chief Accounting Officer

EVP, Chief Risk Officer

President and CEO

iRhythm Holdings Inc is a digital healthcare company that creates trusted solutions that detect, predict, and prevent disease. Its principal business is the design, development, and commercialization of device-based technology to provide ambulatory cardiac monitoring services that it believes allow clinicians to diagnose certain arrhythmias quicker and with greater efficiency than other services that rely on traditional technology. Each Zio System combines an FDA-cleared and CE-marked, wire-free, patch-based, 14-day wearable biosensor that continuously records electrocardiogram (ECG) data with a proprietary, FDA-cleared, CE-marked cloud-based data analytic software to help physicians monitor patients and diagnose arrhythmias.

Institution	Shares	Value	Change
BlackRock, Inc.	2,741,505	$324M	DECREASED
VANGUARD PORTFOLIO MANAGEMENT LLC	1,796,372	$212M	NEW
RTW INVESTMENTS, LP	1,668,500	$197M	INCREASED
Artisan Partners Limited Partnership	1,450,907	$171M	DECREASED
VANGUARD CAPITAL MANAGEMENT LLC	1,445,710	$171M	NEW

Insider	Type	Shares	Value	Date
Marc Wade Rosenbaum (Chief Accounting Officer)	AWARD	178	$17K	2026-05-29
Marc Wade Rosenbaum (Chief Accounting Officer)	SELL	729	$79K	2026-05-29
Sumi Shrishrimal (EVP, Chief Risk Officer)	AWARD	133	$13K	2026-05-29
Sumi Shrishrimal (EVP, Chief Risk Officer)	SELL	1,716	$186K	2026-05-29
Quentin S. Blackford (President and CEO)	AWARD	178	$17K	2026-05-29

iRhythm Holdings, Inc. Common Stock (IRTC) Ownership & Trading Activity

Top Institutional Holders

Recent Insider Trades