| SC 13G/A | 2018-01-29 | BlackRock Inc. | AtriCure, Inc. | 2,731,558 | 7.9% | EDGAR |
| SC 13G/A | 2017-10-10 | WELLINGTON MANAGEMENT GROUP LLP | AtriCure, Inc. | 3,772,188 | 11.0% | EDGAR |
| SC 13G/A | 2017-02-14 | FMR LLC | AtriCure, Inc. | 4,820,000 | 14.5% | EDGAR |
| SC 13G | 2017-02-13 | Consonance Capital Management LP | AtriCure, Inc. | 2,606,354 | 7.8% | EDGAR |
| SC 13G/A | 2017-02-09 | WELLINGTON MANAGEMENT GROUP LLP | AtriCure, Inc. | 3,137,550 | 9.4% | EDGAR |
| SC 13G | 2017-01-30 | BlackRock Inc. | AtriCure, Inc. | 2,121,967 | 6.4% | EDGAR |
| SC 13D | 2017-01-24 | Hudson Executive Capital LP | AtriCure, Inc. | 1,855,000 | - | EDGAR |
| SC 13G/A | 2016-11-03 | RS INVESTMENT MANAGEMENT CO LLC | AtriCure, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2016-09-12 | WELLINGTON MANAGEMENT GROUP LLP | AtriCure, Inc. | 3,338,726 | 10.1% | EDGAR |
| SC 13G/A | 2016-04-11 | FMR LLC | AtriCure, Inc. | 3,616,600 | 10.9% | EDGAR |
| SC 13G/A | 2016-02-16 | ADAGE CAPITAL PARTNERS GP LLC | AtriCure, Inc. | 1,306,488 | 4.1% | EDGAR |
| SC 13G | 2016-02-12 | FMR LLC | AtriCure, Inc. | 1,836,504 | 5.7% | EDGAR |
| SC 13G | 2016-02-12 | RS INVESTMENT MANAGEMENT CO LLC | AtriCure, Inc. | 2,679,551 | 8.3% | EDGAR |
| SC 13G/A | 2016-02-11 | WELLINGTON MANAGEMENT GROUP LLP | AtriCure, Inc. | 2,521,022 | 7.8% | EDGAR |
| SC 13G/A | 2016-01-20 | THOMSON HORSTMANN & BRYANT INC | AtriCure, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2015-11-10 | BlackRock Inc. | AtriCure, Inc. | 1,295,634 | 4.0% | EDGAR |
| SC 13G/A | 2015-02-17 | ADAGE CAPITAL PARTNERS GP LLC | AtriCure, Inc. | 2,167,019 | 7.9% | EDGAR |
| SC 13G | 2015-02-12 | WELLINGTON MANAGEMENT GROUP LLP | AtriCure, Inc. | 1,821,091 | 6.6% | EDGAR |
| SC 13G/A | 2015-01-29 | BlackRock Inc. | AtriCure, Inc. | 1,919,470 | 7.0% | EDGAR |
| SC 13G/A | 2015-01-22 | THOMSON HORSTMANN & BRYANT INC | AtriCure, Inc. | 0 | 0.0% | EDGAR |