STEPAN CO — Director's Dealing 2010

May 6, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEPAN CO (SCL)
CIK: 0000094049
Period of Report: 2010-05-04

Reporting Person: VENEGONI JOHN V (VP/GM Surfactants)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-04	Common Stock	M	1809	$26.25	Acquired	26037.9648	Direct
2010-05-04	Common Stock	S	372	$73.62	Disposed	25665.9648	Direct
2010-05-04	Common Stock	S	928	$73.80	Disposed	24737.9648	Direct
2010-05-04	Common Stock	S	300	$73.81	Disposed	24437.9648	Direct
2010-05-04	Common Stock	S	120	$73.98	Disposed	24317.9648	Direct
2010-05-04	Common Stock	S	80	$73.99	Disposed	24237.9648	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-04	Employee Stock Option	$26.25	M	1809	Disposed	2016-02-13	Common Stock (1809)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1000	Indirect