STEPAN CO — Director's Dealing 2005

May 20, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEPAN CO (SCL)
CIK: 0000094049
Period of Report: 2005-05-18

Reporting Person: STEPAN F QUINN (Director, Chairman and CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-05-18	Common Stock	J	870	—	Disposed	508069	Indirect

Footnotes

F1: The reporting person no longer has a reportable beneficial interest in 870 shares of Stepan Company common stock held in trust by his spouse and included in the reporting person's prior ownership reports.