iRhythm Technologies Inc
Ownership
Ownership Structure
Who owns iRhythm Technologies Inc (IRTC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 91.9% of the shares are freely tradable; institutional investors hold 111.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.32 | 2,741,505 | -2.6 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.45 | 1,796,372 | +0.0 | 03/31/2026 |
| RTW INVESTMENTS, LLC | 5.06 | 1,668,500 | +41.2 | 03/31/2026 |
| Artisan Partners Limited Partnership | 5.04 | 1,660,307 | +14.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.39 | 1,445,710 | +0.0 | 03/31/2026 |
| Millennium Management LLC | 4.27 | 1,406,454 | -12.5 | 06/30/2026 |
| FMR Inc | 4.13 | 1,361,919 | +116.6 | 03/31/2026 |
| Holocene Advisors, LP | 3.79 | 1,248,658 | +82.7 | 03/31/2026 |
| UBS Asset Mgmt Americas Inc | 3.18 | 1,047,452 | +26.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.13 | 1,030,699 | +0.4 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Blackford Quentin S. | President and CEO | 226,008 | 25,267,694 $ | Aug 10, 2026 | direct |
| Murphy Patrick Michael | CBO and CLO | 69,699 | 7,792,348 $ | Aug 10, 2026 | direct |
| Patterson Chad | CHIEF COMM & PRODUCT OFFICER | 62,125 | 6,945,575 $ | Aug 10, 2026 | direct |
| Turakhia Minang | CHIEF MED/SCI OFCR EVP ADVTECH | 60,116 | 6,720,969 $ | Aug 10, 2026 | direct |
| Shrishrimal Sumi | EVP, Chief Risk Officer | 44,621 | 4,988,628 $ | Aug 10, 2026 | direct |
| Wilson Daniel G. | Chief Financial Officer | 34,887 | 3,900,367 $ | Sep 2, 2026 | direct |
| Smith Mervin | EVP Strategic Business Ops | 22,410 | 2,505,438 $ | Aug 3, 2026 | direct |
| Rodda Julianne | EVP, CHIEF PEOPLE OFFICER | 18,201 | 2,034,872 $ | Aug 3, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Wilson Daniel G. | Chief Financial Officer | Sell | 773 | 121.83 | 94,175 |
| Aug 10, 2026 | Turakhia Minang | CHIEF MED/SCI OFCR EVP ADVTECH | Sell | 7,093 | 124.65 | 884,151 |
| Aug 10, 2026 | Shrishrimal Sumi | EVP, Chief Risk Officer | Sell | 5,372 | 124.65 | 669,641 |
| Aug 10, 2026 | Patterson Chad | CHIEF COMM & PRODUCT OFFICER | Sell | 7,093 | 124.65 | 884,170 |
| Aug 10, 2026 | Murphy Patrick Michael | CBO and CLO | Sell | 7,093 | 124.65 | 884,156 |
| Aug 10, 2026 | Blackford Quentin S. | President and CEO | Sell | 26,859 | 124.65 | 3,348,012 |
| Aug 7, 2026 | Turakhia Minang | CHIEF MED/SCI OFCR EVP ADVTECH | Other | 13,589 | 0.00 | – |
| Aug 7, 2026 | Shrishrimal Sumi | EVP, Chief Risk Officer | Other | 9,706 | 0.00 | – |
| Aug 7, 2026 | Patterson Chad | CHIEF COMM & PRODUCT OFFICER | Other | 13,589 | 0.00 | – |
| Aug 7, 2026 | Murphy Patrick Michael | CBO and CLO | Other | 13,589 | 0.00 | – |
| Aug 7, 2026 | Blackford Quentin S. | President and CEO | Other | 48,534 | 0.00 | – |
| Aug 3, 2026 | Rodda Julianne | EVP, CHIEF PEOPLE OFFICER | Sell | 2,112 | 122.12 | 257,919 |
| Aug 3, 2026 | Smith Mervin | EVP Strategic Business Ops | Sell | 617 | 122.12 | 75,349 |
| Aug 3, 2026 | Patterson Chad | CHIEF COMM & PRODUCT OFFICER | Sell | 2,712 | 122.12 | 331,192 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.