Wellington Management Group LLP Increases Stake in AtriCure, Inc. to 6.8%

On May 15, 2026, Wellington Management Group LLP and its affiliated entities filed a Schedule 13G/A with the SEC, reporting a 6.8% ownership stake in AtriCure, Inc. (ATRC). The filing indicates that Wellington Management Group LLP, acting as a parent holding company, beneficially owns 3,382,555 shares of AtriCure's common stock. This position is held through various subsidiaries, including Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP. The shares are owned of record by clients of investment advisers directly or indirectly owned by Wellington Management Group LLP. The filing specifies shared dispositive power over all 3,382,555 shares and shared voting power over 1,485,289 shares. This amendment reflects an increase from a previously reported 0.0% position, establishing a significant holding in the medical technology company. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business without the intent to influence or change the control of the issuer.