SEC Filing Summary

Karl S. Dahlquist, Chief Legal Officer of AtriCure, Inc., acquired 636 shares of common stock on June 30, 2026, for $23.78 per share. These shares were acquired through the AtriCure, Inc. 2018 Employee Stock Purchase Plan, which allows for purchases at 85% of the closing price on the last trading day of the offering period. The closing price on June 30, 2026, was $27.98. Following this transaction, Dahlquist owns 96,689 shares of common stock. This filing is a Form 4, indicating a change in beneficial ownership.