X0508 4 2024-05-21 0 0000701288 ATRION CORP ATRI 0001700366 Athey Preston G ONE ALLENTOWN PKWY ALLEN TX 75002 1 0 0 0 0 Deferred Stock Unit 2024-05-21 4 A 0 311 0 A common stock 311 311 D Each deferred stock unit was awarded under the Atrion Corporation 2021 Equity Incentive Plan and in accordance with the Issuers Director Compensation Program and represents the right to receive one share of common stock of the Issuer. The deferral period for the deferred stock units lapses on the one-year anniversary of the grant date or such earlier date as set forth in the award agreement and will be settled in shares of the Issuer's common stock. /s/Cindy Ferguson, Attorney-in-fact 2024-05-23