Insider Transaction Report for AtriCure, Inc.

Karen Prange, a director at AtriCure, Inc. (ATRC), acquired 6,144 shares of Common Stock on May 18, 2026, with a transaction price of $0.00 per share. These shares were obtained through a Restricted Stock Award under the AtriCure, Inc. 2023 Stock Incentive Plan and will vest on the one-year anniversary of the grant date. Following this transaction, Prange now owns 29,373 shares of Common Stock. The filing was made on Form 4, with a signature date of May 20, 2026.