AtriCure Inc
Ownership
Ownership Structure
Who owns AtriCure Inc (ATRC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.0% of the shares are freely tradable; institutional investors hold 102.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.80 | 4,474,548 | +10.7 | 06/30/2026 |
| Wellington Management Company LLP | 6.87 | 3,495,603 | +3.3 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 6.15 | 3,127,195 | +15.7 | 06/30/2026 |
| Hood River Capital Management LLC | 5.71 | 2,905,299 | -6.8 | 06/30/2026 |
| AllianceBernstein L.P. | 5.44 | 2,768,365 | -15.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.31 | 2,190,413 | +1.6 | 06/30/2026 |
| Delaware Management Holdings Inc | 3.41 | 1,734,279 | -3.9 | 06/30/2026 |
| The Goldman Sachs Group Inc | 3.14 | 1,597,988 | -4.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.95 | 3,028,653 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.00 | 1,528,173 | +0.4 | 09/30/2026 |
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 |
|---|---|---|---|---|---|
| Carrel Michael H | President, CEO, & Director | 774,434 | 46,775,814 $ | Jul 30, 2026 | direct |
| Privitera Salvatore | Chief Technical Officer | 142,745 | 8,621,798 $ | Sep 23, 2026 | direct |
| Noznesky Justin J | Chief Mktg & Strategy Officer | 100,219 | 6,053,228 $ | Jul 29, 2026 | direct |
| Dahlquist Karl S. | Chief Legal Officer | 87,319 | 5,274,068 $ | Aug 24, 2026 | direct |
| Doraiswamy Vinayak | Chief Scientific Officer | 86,511 | 5,225,264 $ | Jul 28, 2026 | direct |
| Wehrwein Sven | Director | 40,518 | 2,447,287 $ | Jul 28, 2026 | direct |
| Groves Regina E | Director | 34,546 | 2,086,578 $ | Sep 11, 2026 | direct |
| Prange Karen | Director | 22,809 | 1,377,664 $ | Aug 5, 2026 | direct |
| Yuen Maggie | Director | 14,015 | 846,506 $ | Aug 5, 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 23, 2026 | Privitera Salvatore | Chief Technical Officer | Sell | 4,519 | 60.00 | 271,140 |
| Sep 11, 2026 | Groves Regina E | Director | Sell | 5,313 | 54.22 | 288,071 |
| Sep 8, 2026 | Privitera Salvatore | Chief Technical Officer | Sell | 3,657 | 55.00 | 201,135 |
| Sep 2, 2026 | Privitera Salvatore | Chief Technical Officer | Sell | 7,763 | 52.50 | 407,558 |
| Aug 24, 2026 | Dahlquist Karl S. | Chief Legal Officer | Sell | 9,370 | 48.89 | 458,099 |
| Aug 5, 2026 | Yuen Maggie | Director | Sell | 3,500 | 38.42 | 134,470 |
| Aug 5, 2026 | Prange Karen | Director | Sell | 3,564 | 38.80 | 138,283 |
| Jul 30, 2026 | Carrel Michael H | President, CEO, & Director | Other | 4,000 | 0.00 | – |
| Jul 30, 2026 | Carrel Michael H | President, CEO, & Director | Other | 700 | 0.00 | – |
| Jul 29, 2026 | Noznesky Justin J | Chief Mktg & Strategy Officer | Sell | 6,182 | 38.80 | 239,862 |
| Jul 28, 2026 | Doraiswamy Vinayak | Chief Scientific Officer | Sell | 6,000 | 38.88 | 233,280 |
| Jul 28, 2026 | Wehrwein Sven | Director | Sell | 25,000 | 37.84 | 946,000 |
| Jul 28, 2026 | Wehrwein Sven | Director | Other | 25,000 | 19.95 | 498,750 |
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: November 3, 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.