STEPAN F QUINN JR (Chairman, President & CEO) sold 5.9% of their position (10K shares) of STEPAN CO on the open market

Open‑market sale worth $501.6K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales

STEPAN F QUINN JR

Filed: 8/6/2025ACC: 0001127602-25-020193

InsiderSTEPAN F QUINN JRCIK 1229289

→

IssuerSTEPAN COCIK 94049

DirectorOfficer· Chairman, President & CEO

Since Sep 2018

-13K

Net shares

Net seller

$501.6K

Total sold

Open market trades

0B · 2S

Total transactions

2.28 acquired · 13K disposed

Non-Derivative Transactions5

Common Stock

Direct

G · Gift

+2.28

Price / share

—

Trade value

—

% of position

0.0%

8/4/2025

105.45K→105.45K

Common Stock

Direct

F · Tax Withholding

−0.61

Price / share

$49.83

Trade value

$30.65

% of position

0.0%

8/4/2025

105.45K→105.45K

Common Stock

Direct

G · Gift

−3K

Price / share

—

Trade value

—

% of position

1.8%

8/4/2025

166.12K→163.12K

Common Stock

Direct

S · Sale

−6.30K

Price / share

$49.96

Trade value

$314.76K

% of position

3.7%

8/4/2025

172.42K→166.12K

Common Stock

Direct

S · Sale

−3.70K

Price / share

$50.49

Trade value

$186.81K

% of position

2.3%

8/5/2025

163.12K→159.42K

Total

Net shares

−13K

Net value

-$501.60K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/4/2025	G · Gift	+2.28	—	—	0.0%	105.45K	105.45K
Common Stock Direct	8/4/2025	F · Tax Withholding	−0.61	$49.83	$30.65	0.0%	105.45K	105.45K
Common Stock Direct	8/4/2025	G · Gift	−3K	—	—	1.8%	166.12K	163.12K
Common Stock Direct	8/4/2025	S · Sale	−6.30K	$49.96	$314.76K	3.7%	172.42K	166.12K
Common Stock Direct	8/5/2025	S · Sale	−3.70K	$50.49	$186.81K	2.3%	163.12K	159.42K
Total			−13K		-$501.60K

Derivative Transactions1

Share Units

Indirect

M · Option Exercise

Converts to

Common Stock

2.28 shares

−2.28

Strike price

Held after

43.17K

Exercisable

—

8/4/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Share Units Indirect	Common Stock2.28 shares	8/4/2025	M · Option Exercise	−2.28		—	43.17K

Non-Derivative Holdings (Post-Transaction)9

Common Stock

Indirect

Shares owned160K

Common Stock

Indirect

Shares owned100.00

Common Stock

Indirect

Shares owned19.05K

Common Stock

Indirect

Shares owned161.87K

Common Stock

Indirect

Shares owned0.00

Common Stock

Indirect

Shares owned1.02K

Common Stock

Indirect

Shares owned600.00

Common Stock

Indirect

Shares owned87.50K

Common Stock

Indirect

Shares owned67.21

Total

430.21K indirect430.21K

Security Title	Shares Owned	Ownership Type
Common Stock	160K	Indirect
Common Stock	100.00	Indirect
Common Stock	19.05K	Indirect
Common Stock	161.87K	Indirect
Common Stock	0.00	Indirect
Common Stock	1.02K	Indirect
Common Stock	600.00	Indirect
Common Stock	87.50K	Indirect
Common Stock	67.21	Indirect
Total	430.21K	430.21K indirect

Derivative Holdings (Post-Transaction)1

Share Units

Direct

Underlying security

Common Stock

Underlying shares

63.40K

Shares owned

63.40K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

63.40K

Owned

63.40K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Share Units Direct	Common Stock		—	—	63.40K	63.40K
Total					63.40K	63.40K