X0508 4 2024-02-15 0000094049 STEPAN CO SCL 0001738439 Rojo Luis 1101 SKOKIE BOULEVARD, SUITE 500 NORTHBROOK IL 60062 1 VP & Chief Financial Officer 0 Common Stock 2024-02-15 4 M 0 1467 A 9065.375 D Performance Shares 2024-02-15 4 M 0 2182 D Common Stock 2182 0 D Performance Shares 2024-02-15 4 D 0 4094 0 D Common Stock 4094 0 D Each performance share represents a contingent right to receive one share of Stepan Company common stock. The performance shares vested upon the certification of Stepan Company achieving certain performance goals for the performance period ending December 31, 2023. Each performance share represents a contingent right to receive one share of Stepan Company common stock. The performance shares were forfeited due to Stepan Company's performance for the period ending December 31, 2023. /s/ Stephanie J. Pacitti, Attorney-in-Fact for Luis Rojo 2024-02-20