X0306 4 2019-11-26 0000094049 STEPAN CO SCL 0001603410 Mergner Arthur W 22 W. FRONTAGE ROAD NORTHFIELD IL 60093 1 VP, Supply Chain Common Stock 2019-11-26 4 M 0 11553 41.16 A 23007.096 D Common Stock 2019-11-26 4 D 0 4725 100.65 D 18282.096 D Common Stock 2019-11-26 4 F 0 3025 41.16 D 15257.096 D Common Stock 2019-11-26 4 S 0 3803 99.995 D 11454.096 D Common Stock 3248.628 I By Esop II Trust Stock Appreciation Right 41.16 2019-11-26 4 M 0 11553 0 D 2017-02-17 2025-02-16 Common Stock 11553 0 D The stock appreciation rights ("SARs") were settled in shares of common stock as per the terms of the award. Deemed disposition of underlying common stock to the issuer in an amount equal to the conversion price of the SARs. Withholding of shares to satisfy tax liability on exercise of SARs. The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $99.600 to $100.350, inclusive. Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer. This holding is re-reported solely to gain access to the electronic filing system to file this amendment, and the sole purpose of the amendment is to add the Power of Attorney that was inadvertently omitted from the original filing. /s/ Stephanie J. Pacitti, Attorney-in-fact for Arthur W. Mergner 2019-11-27