X0306 4 2021-03-15 0000094049 STEPAN CO SCL 0001229289 STEPAN F QUINN JR 22 W. FRONTAGE ROAD NORTHFIELD IL 60093 1 1 Chairman & CEO Common Stock 2021-03-01 5 G 0 E 80318 0 D 17464 I By Family Trust III Common Stock 2021-03-01 5 G 0 E 48000 0 D 0 I By Family Trust Common Stock 2021-03-15 4 A 0 444.894 128.49 A 176352.903 D Common Stock 2021-03-17 5 G 0 E 5308 0 D 171044.903 D Common Stock 2021-03-17 5 G 0 E 5308 0 A 70177 D Common Stock 11708.509 I By Esop II Trust Share Units 2021-03-15 4 A 0 242.416 128.49 A Common Stock 242.416 102366.803 D Prior to the reported gift, the holdings were updated to reflect previously reported gifts of 26,400 shares from direct holdings that were transferred to Family Trust III. The Reporting Person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for the purpose of Section 16 or for any other purpose. Reflects acquisition of deferred share units under the Performance Award Deferred Compensation Plan ("Plan") pursuant to a dividend equivalent feature of the Plan. Joint Tenancy with Spouse. Reflects ESOP II acquisitions that have occurred since the Reporting Person's last ownership report covering ESOP II holdings. 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. Reflects acquisition of Share Units pursuant to a dividend equivalent feature of the MIP, generally payable at end of employment, unless otherwise elected. Price reported is the price of Common Stock on the date the dividend equivalents are payable pursuant to a dividend equivalent feature of the MIP. /s/ Stephanie J. Pacitti, Attorney-in-Fact for F. Quinn Stepan, Jr. 2021-03-17