144 0001244290 XXXXXXXX LIVE 0000094049 Stepan Company 001-04462 Edens and Winnetka Road Northfield IL 60093 847-446-7500 Edward J. Wehmer Director Common Wintrust Investments, LLC

231 S LaSalle Street, 13th Floor Chicago IL 60604

1500 134355 4592 05/11/2023 NYSE Common 08/15/2003 Purchase Edward J. Wehmer N 2500 08/15/2003 Cash Y Donation to Edandor Foundation 05/16/2023 /s/Edward J. Wehmer