iRhythm Holdings, Inc. (IRTC)
Nasdaq: IRTC · Surgical & Medical Instruments & Apparatus · San Francisco, CA · filing with the SEC since 2007
Grade5.8
◀ Past 5.5● Present 5.5▶ Future 6.5
Who owns iRhythm Holdings, Inc.
As filed with the SECHolders of 5% or more
4
RTW Investments, LP holds 6.6% of Common Stock, $0.001 par value, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
19
report now, of 37 people on the record since 2016. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
RTW Investments, LP
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, $0.001 par value · 5.2% in May 15, 2026
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 28, 2026 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Apr 27, 2026 · Common Stock
Artisan Partners Asset Management Inc.
SCHEDULE 13G · filed Aug 13, 2026 · Common Shares · 4.7% in Feb 3, 2026
Capital Research Global Investors
SCHEDULE 13G/A · filed Aug 13, 2025 · Common Stock · reported falling below 5%, from 7% in May 13, 2025
Millennium Management LLC
SCHEDULE 13G/A · filed Oct 13, 2026 · Common Stock, par value $0.001 per share · reported falling below 5%, from 5.1% in Mar 23, 2026
Sands Capital Management, LLC
SCHEDULE 13G/A · filed May 8, 2026 · Common Stock, par value $0.001 per share · reported falling below 5%, from 5.3% in Feb 13, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 10% in Jan 8, 2025
What IRTC reports owning in othersstakes of 5% or more, and other ties
1 subsidiary in 1 country, from the list filed with the 10-K filed Feb 19, 2026.
Insider tradesForm 4
66sales
1purchases
20sales on a scheduled plan
12people selling
$29.6Msold, in dollars
$100,000bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window12 of 55 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Blackford Quentin S. | President and CEO | 6 | $11.2M | 0 | 0 | $0 |
| Patterson Chad | CHIEF COMM & PRODUCT OFFICER | 6 | $3.1M | 1 | 0 | $0 |
| Murphy Patrick Michael | CBO and CLO | 6 | $3.0M | 0 | 0 | $0 |
| Wilson Daniel G. | Chief Financial Officer | 7 | $2.9M | 1 | 0 | $0 |
| Turakhia Minang | CHIEF MED/SCI OFCR EVP ADVTECH | 6 | $2.6M | 0 | 0 | $0 |
| Talwalkar Abhijit Y | director | 15 | $2.3M | 15 | 1 | $100,000 |
| Shrishrimal Sumi | EVP, Chief Risk Officer | 6 | $2.1M | 0 | 0 | $0 |
| Smith Mervin | EVP Strategic Business Ops | 6 | $1.2M | 2 | 0 | $0 |
| Rosenbaum Marc W. | Chief Accounting Officer | 5 | $900,000 | 1 | 0 | $0 |
| Rodda Julianne | EVP, CHIEF PEOPLE OFFICER | 1 | $300,000 | 0 | 0 | $0 |
| Lawrence Brian Lee | Chief Technology Officer | 1 | $100,000 | 0 | 0 | $0 |
| Freeman Sean Clinton | EVP, Strategy & Corp Devt | 1 | $100,000 | 0 | 0 | $0 |