Sean Thomas Moriarty - 03 Mar 2026 Form 4 Insider Report for STEPAN CO (SCL)

Role: VP & GM Surfactants
Signature: /s/ James A. Hart, Attorney-in-Fact for Sean T. Moriarty
Issuer symbol: SCL
Transactions as of: 03 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Mar 2026, 19:21:03 UTC
Previous filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Moriarty Sean Thomas	VP & GM Surfactants	1101 SKOKIE BOULEVARD, SUITE 500, NORTHBROOK	/s/ James A. Hart, Attorney-in-Fact for Sean T. Moriarty	05 Mar 2026	0001716333

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SCL	Common Stock	Tax liability		-166	-1%	$49.62^*	15,710	04 Mar 2026	Direct	F1
transaction	SCL	Common Stock	Options Exercise		+571	+3.7%	$49.62^*	15,876	04 Mar 2026	Direct	F2
transaction	SCL	Common Stock	Tax liability		-570	-3.6%	$48.98^*	15,305	03 Mar 2026	Direct	F1
transaction	SCL	Common Stock	Options Exercise		+1,670	+12%	$48.98^*	15,875	03 Mar 2026	Direct	F2
holding	SCL	Common Stock						4,478	03 Mar 2026	By ESOP II Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SCL	Restricted Stock Units	Options Exercise		-571	-50%	$0.000000^*	572	04 Mar 2026	Restricted Stock Units	571		Direct	F2, F3, F4
transaction	SCL	Restricted Stock Units	Options Exercise		-1,670	-33%	$0.000000^*	3,342	03 Mar 2026	Restricted Stock Units	1,670		Direct	F2, F5, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Withholding of shares to satisfy tax liability on the vesting of RSUs.
F2	The restricted stock units ("RSUs") were settled in shares of common stock per the terms of the award.
F3	Each restricted stock unit ("RSU") represents a contingent right to receive one share of Stepan Company common stock.
F4	Vests ratably over three years beginning on the date shown.
F5	Each RSU represents a contingent right to receive one share of Stepan Company common stock.
F6	Vest ratably over three years beginning on the date shown.