X0306 4 2023-02-01 0000094049 STEPAN CO SCL 0001229289 STEPAN F QUINN JR 1101 SKOKIE BOULEVARD, SUITE 500 NORTHBROOK IL 60062 1 Common Stock 2023-02-01 4 M 0 13979.183 A 215651.316 D Common Stock 2023-02-01 4 F 0 6647.809 109.84 D 209003.507 D Share Units 2023-02-01 4 M 0 13979.183 D Common Stock 13979.183 90597.339 D Each share unit was the economic equivalent of one share of Stepan Company common stock. On February 1, 2023, 13,979.183 of the reporting person's share units were settled for an equal number of shares of Stepan Company common stock. Withholding of shares to satisfy the tax liability on the distribution of share units. Includes exempt acquisitions under Rule 16a-11 pursuant to dividend reinvestments since the date of the reporting person's last report. Share Units are acquired under the Management Incentive Plan (As Amended and Restated Effective January 1, 2015) ("MIP"), a nonqualified deferred compensation plan which allows MIP participants to elect to defer all or a portion of their deferred compensation into accounts pursuant to MIP provisions. Share Units convert on a one-for-one basis into Common Stock. Share Units are generally payable at end of employment, unless otherwise elected. /s/ Stephanie J. Pacitti, Attorney-in-Fact for F. Quinn Stepan, Jr. 2023-02-03