X0508 4/A 2024-07-11 2024-07-01 0 0000701288 ATRION CORP ATRI 0001400964 Battat David A 2700 HALKEY-ROBERTS PLACE NORTH ST. PETERSBURG FL 33716-4103 0 1 0 0 President & CEO 0 common stock 2024-07-01 4 M 0 310.89 0 A 39710.89 D common stock 2024-07-01 4 D 0 310.89 452.43 D 39400 D common stock 55500 I By Family Trust The Form 4 filed by the reporting person on July 1, 2024 mistakenly reported that after the acquisition on July 1, 2024 the reporting person owned directly 39,410.89 shares. The correct number is 39,710.89 shares. The Form 4 filed by the reporting person on July 1, 2024 mistakenly reported that after the acquisition on July 1, 2024 the reporting person owned directly 39,100 shares. The correct number is 39,400 shares. The Form 4 filed by the reporting person on July 1, 2024, inadvertently failed to report that the reporting person owned indirectly shares of the issuer's common stock. As reported in this amendment, the reporting person owned indirectly 55,500 shares of the issuer's common stock. /s/Cindy Ferguson, Attorney-in-fact 2024-07-11