| SC 13D | 2010-09-27 | DISCOVERY EQUITY PARTNERS, LP | AtriCure, Inc. | 1,247,037 | 8.0% | EDGAR |
| SC 13D | 2010-09-10 | Discovery Group I, LLC | AtriCure, Inc. | 894,015 | 5.7% | EDGAR |
| SC 13G/A | 2010-02-16 | Hooven Michael D | AtriCure, Inc. | 808,270 | 5.3% | EDGAR |
| SC 13G/A | 2010-02-16 | Kairos Partners III Limited Partnership | AtriCure, Inc. | - | - | EDGAR |
| SC 13G/A | 2010-02-16 | CAMDEN PARTNERS STRATEGIC II LLC | AtriCure, Inc. | 1,038,379 | 6.8% | EDGAR |
| SC 13G/A | 2010-02-11 | Capital Research Global Investors | AtriCure, Inc. | - | 0.0% | EDGAR |
| SC 13G/A | 2010-02-05 | WELDON NORMAN R | AtriCure, Inc. | 865,462 | 5.6% | EDGAR |
| SC 13G/A | 2009-02-17 | Hooven Michael D | AtriCure, Inc. | 796,939 | 5.6% | EDGAR |
| SC 13G/A | 2009-02-13 | Capital Research Global Investors | AtriCure, Inc. | 1,019,200 | 7.2% | EDGAR |
| SC 13G/A | 2009-02-12 | WELDON NORMAN R | AtriCure, Inc. | 680,462 | 4.6% | EDGAR |
| SC 13G/A | 2009-02-09 | TimesSquare Capital Management, LLC | AtriCure, Inc. | 1,055,200 | 7.4% | EDGAR |
| SC 13G/A | 2008-02-14 | HUGHES DONALD W | AtriCure, Inc. | 1,026,721 | 7.3% | EDGAR |
| SC 13G/A | 2008-02-14 | Charter Ventures IV, L.P. | AtriCure, Inc. | 1,164 | 0.2% | EDGAR |
| SC 13G/A | 2008-02-13 | Hooven Michael D | AtriCure, Inc. | 803,005 | 5.7% | EDGAR |
| SC 13G | 2008-02-12 | Capital Research Global Investors | AtriCure, Inc. | 1,007,820 | 7.1% | EDGAR |
| SC 13G/A | 2008-02-01 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | AtriCure, Inc. | 624,670 | 4.4% | EDGAR |
| SC 13G/A | 2008-01-31 | TimesSquare Capital Management, LLC | AtriCure, Inc. | 1,137,100 | 8.0% | EDGAR |
| SC 13G/A | 2007-02-14 | Charter Ventures IV, L.P. | AtriCure, Inc. | 1,383 | 0.0% | EDGAR |
| SC 13G/A | 2007-02-13 | WELDON NORMAN R | AtriCure, Inc. | 628,562 | 5.1% | EDGAR |
| SC 13G | 2007-02-12 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | AtriCure, Inc. | 767,210 | 6.3% | EDGAR |