As of November 6, 2026, AtriCure Inc is a publicly traded company (Nasdaq: ATRC); its largest reported holder is BlackRock, with 15.4% on Schedule 13G/A of October 5, 2026, then Vanguard (7.22%). The largest insider holding is Michael H. Carrel, the chief executive and president, with 792,694 shares (1.6% of shares outstanding), per Form 4 of August 3, 2026 (Schedule 13G/A, October 5, 2026).
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Is AtriCure Inc a real, registered company?
- AtriCure Inc files with the SEC under CIK 1323885 (its SEC filings).
- Its shares are listed under the ticker ATRC on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Mason, Ohio, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under AtriCure Inc in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Vanguard (filed 2026-10-30).
Who are AtriCure Inc's owners and officers?
AtriCure Inc: incorporated in Delaware; business address in Mason, Ohio; industry Surgical & Medical Instruments & Apparatus (Schedule 13G/A, 2026-10-30).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-10-30 | Vanguard Portfolio Management | 7.22% |
| Schedule 13G/A, 2026-10-05 | Blackrock, Inc. | 15.4% |
| Schedule 13G/A, 2026-08-14 | Alliancebernstein L.P. | 5.5% |
| Schedule 13G/A, 2026-05-15 | Wellington Management Group LLP | 6.8% |
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 5.08% |
| Schedule 13G, 2026-04-28 | Vanguard Portfolio Management | 5.51% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-17 | Hood River Capital Management LLC | 6.23% |
| Schedule 13G/A, 2025-11-13 | Macquarie Group Limited | 4.6% |
| Schedule 13G/A, 2025-10-17 | Blackrock, Inc. | 7.8% |
| Schedule 13G, 2025-08-12 | Macquarie Group Limited | 5.06% |
| Schedule 13G, 2025-08-12 | Wellington Management Group LLP | 8% |
Questions about who owns AtriCure Inc
Who owns AtriCure Inc?
On this page, 6 holders' latest ownership filings report 5% or more of AtriCure Inc: Blackrock, Inc. (15.4%, Schedule 13G/A, filed 2026-10-05), Vanguard Portfolio Management (7.22%, Schedule 13G/A, filed 2026-10-30), Wellington Management Group LLP (6.8%, Schedule 13G/A, filed 2026-05-15), Hood River Capital Management LLC (6.23%, Schedule 13G/A, filed 2026-02-17) and Alliancebernstein L.P. (5.5%, Schedule 13G/A, filed 2026-08-14); 1 more is listed above.
Who are the largest shareholders of AtriCure Inc?
By the share each holder's latest filing reports, the largest holders of AtriCure Inc on this page are Blackrock, Inc. (15.4%), Vanguard Portfolio Management (7.22%) and Wellington Management Group LLP (6.8%).
When did Blackrock, Inc. buy into AtriCure Inc?
The filings give report dates, not purchase dates. The earliest filing from Blackrock, Inc. on this page is the Schedule 13G/A, filed 2025-10-17, reporting 7.8%; its latest, Schedule 13G/A filed 2026-10-05, reports 15.4%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on AtriCure Inc covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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Which insiders own AtriCure Inc shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 792,694 shares (1.6% of shares outstanding), 774,434 held directly and 18,260 indirectly (Form 4, 2026-08-03).
- , the chief operating officer: 229,867 shares (0.45% of shares outstanding) (Form 4, 2026-07-02).
- , the chief financial officer: 204,893 shares (0.40% of shares outstanding) (Form 4, 2026-03-03).
- , the chief technical officer: 134,341 shares (0.26% of shares outstanding) (Form 4, 2026-11-05).
- , a director: 128,318 shares (0.25% of shares outstanding) (Form 4, 2026-05-20).
Shares outstanding: 50,922,283 as of 2026-11-02, from the company's latest SEC cover page.
How much has AtriCure Inc raised?
No fundraising or offering filing from AtriCure Inc is on file with us.
Keep reading
More on AtriCure Inc and the records around it.
AtriCure Inc elsewhere on the record
- 5%+ stake filings Oct 2026
Companies that share a holder
- Macquarie Group Limited also filed stake reports on 14 other companies: Artivion Inc (Feb 2026), Imax Corp (Feb 2026), Kaiser Aluminum Corp (Feb 2026)
- Hood River Capital Management LLC also filed stake reports on 19 other companies: Butterfly Network Inc. (Aug 2026), Camping World Holdings, Inc. (Aug 2026), Kura Sushi USA Inc. (Aug 2026)
- AllianceBernstein L.P. also filed stake reports on 82 other companies: New Fortress Energy Inc (Nov 2026), RIVERNORTH OPPORTUNITIES FUND, INC. (Oct 2026), Trex Co Inc (Sep 2026)
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