Stocks › ATRC
AtriCure, Inc.
ATRC·Nasdaq·
United States·USD
United States·USD$56.37
+1.23 (+2.23%)
Close · Oct 5, 2026 · Close Prices from Tiingo.com
ATRC
AtriCure, Inc. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ATRCS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ATRC by members of U.S. Congress · 12 on record · 2 in the last 12 months
Whale Activity
Position changes in ATRC reported for 2026-06-30 by 13 tracked institutional filers
- Increased6
- New1
- Held0
- Decreased2
- Closed1
- No prior filing3
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 4.5M | $125.2M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.1M | $87.5M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.2M | $61.3M | increased |
| Point72 Asset Management, L.P. | 604.4K | $16.9M | new |
| Grandeur Peak Global Advisors, LLC | 587.4K | $16.4M | — |
| TWO SIGMA INVESTMENTS, LP | 525.8K | $14.7M | decreased |
| RENAISSANCE TECHNOLOGIES LLC | 234.1K | $6.6M | decreased |
| D. E. Shaw & Co., Inc. | 192.8K | $5.4M | increased |
| CITADEL ADVISORS LLC | 177.3K | $5.0M | increased |
| HighMark Wealth Management LLC | 83.7K | $2.3M | — |
| Bridgewater Associates, LP | 76.3K | $2.1M | increased |
| Knott David M Jr | 51.4K | $1.4M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ATRC insiders, by quarter · Form 4
Recent Insider Transactions
1,349 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Privitera SalvatoreChief Technical Officer | Sale | −4,519 | $60.00 | $271K | Sep 23, 2026 | Form 4 ↗ |
| GROVES REGINA EDirector · Director | Sale | −5,313 | $54.22 | $288K | Sep 11, 2026 | Form 4 ↗ |
| Privitera SalvatoreChief Technical Officer | Sale | −3,657 | $55.00 | $201K | Sep 8, 2026 | Form 4 ↗ |
| Privitera SalvatoreChief Technical Officer | Sale | −7,763 | $52.50 | $408K | Sep 2, 2026 | Form 4 ↗ |
| Dahlquist Karl S.Chief Legal Officer | Sale | −9,370 | $48.89 | $458K | Aug 24, 2026 | Form 4 ↗ |
| Yuen MaggieDirector · Director | Sale | −3,500 | $38.42 | $134K | Aug 5, 2026 | Form 4 ↗ |
| Prange KarenDirector · Director | Sale | −3,564 | $38.80 | $138K | Aug 5, 2026 | Form 4 ↗ |
| Noznesky Justin JChief Mktg & Strategy Officer | Sale | −6,182 | $38.80 | $240K | Jul 29, 2026 | Form 4 ↗ |
| Doraiswamy VinayakChief Scientific Officer | Sale | −6,000 | $38.88 | $233K | Jul 28, 2026 | Form 4 ↗ |
| WEHRWEIN SVENDirector · Director | Sale | −25.0K | $37.84 | $946K | Jul 28, 2026 | Form 4 ↗ |
| Prange KarenDirector | Sale | −3,000 | $28.65 | $86K | May 20, 2026 | Form 4 ↗ |
| Nachman ShlomoDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| Telman Deborah HDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| Yuen MaggieDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| GROVES REGINA EDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| WHITE ROBERT S.Director | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| Prange KarenDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| JOHNSON B KRISTINEDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| WEHRWEIN SVENDirector | Grant / award | +6,144 | $0.00 | $0 | May 18, 2026 | Form 4 ↗ |
| Doraiswamy VinayakChief Scientific Officer | Sale | −5,000 | $28.13 | $141K | May 15, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ATRC · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Hood River Small-Cap Growth Fund Manager Directed Portfolios | 1.5M | $42.7M | 0.64% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.5M | $42.5M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF iShares Trust | 1.3M | $36.3M | 0.04% | Jun 30, 2026 |
| Nomura Small Cap Core Fund Delaware Group Equity Funds V | 1.2M | $33.7M | 0.61% | May 29, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 1.1M | $30.8M | 0.02% | Jun 30, 2026 |
| AB DISCOVERY GROWTH FUND, INC. | 737.6K | $20.6M | 0.71% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 545.4K | $20.6M | 0.06% | Jul 31, 2026 |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 632.9K | $17.7M | 0.04% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 580.5K | $16.2M | 0.02% | Jun 30, 2026 |
| Fidelity Enhanced Small Cap Core ETF Fidelity Covington Trust | 461.4K | $12.9M | 0.22% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list ATRC's shares (CUSIP 04963C209), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 7.8M shares15.4%
Oct 5, 2026 · ↗ - AllianceBernstein L.P.SCHEDULE 13G/A · passive (13G) · 2.8M shares5.5%
Aug 14, 2026 · ↗ - Wellington Management Company LLPSCHEDULE 13G/A · passive (13G) · 3.4M shares5.5%
May 15, 2026 · ↗ - Wellington Investment Advisors Holdings LLPSCHEDULE 13G/A · passive (13G) · 3.4M shares6.8%
May 15, 2026 · ↗ - Wellington Group Holdings LLPSCHEDULE 13G/A · passive (13G) · 3.4M shares6.8%
May 15, 2026 · ↗ - Wellington Management Group LLPSCHEDULE 13G/A · passive (13G) · 3.4M shares6.8%
May 15, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming atricure as client
Government Contracts
Federal awards to atricure · USAspending
$66KAwarded · 2 contracts on record
U.S. Patents
Recent USPTO applications naming AtriCure, Inc.
No USPTO patent applications found for AtriCure, Inc..
Annual Financials
From ATRC's 10-K filings · XBRL
No annual XBRL figures on record for ATRC. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in ATRC's price history.
Material Events (8-K)
Corporate events filed with the SEC
About AtriCure, Inc.
From SEC EDGAR company records
Industry (SIC 3841)Surgical & Medical Instruments & Apparatus
SectorHealthcare
HeadquartersMASON, OH
IncorporatedDE
SEC CIK0001323885 ↗