STEPAN CO — Director's Dealing 2005

May 26, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEPAN CO (SCL)
CIK: 0000094049
Period of Report: 2005-05-12

Reporting Person: PACHOLEC FRANK (Vice President, R&D)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-05-12	Common Stock	P	100	$21.51	Acquired	7700	Direct
2005-05-12	Common Stock	P	250	$21.59	Acquired	7950	Direct
2005-05-12	Common Stock	P	400	$21.70	Acquired	8350	Direct
2005-05-12	Common Stock	P	1100	$21.70	Acquired	9450	Direct