Du Xinyu - 26 Jan 2026 Form 4 Insider Report for FULLER H B CO (FUL)

Role: Sr. VP, Global R&D
Signature: /s/ Patrick J. Seul, Attorney-in-Fact
Issuer symbol: FUL
Transactions as of: 26 Jan 2026
Net transactions value: +$651,913
Form type: 4
Filing time: 28 Jan 2026, 11:23:20 UTC
Previous filing: 27 Jan 2026
Next filing: 29 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Du Xinyu	Sr. VP, Global R&D	1200 WILLOW LAKE BOULEVARD, P.O. BOX 64683, ST. PAUL	/s/ Patrick J. Seul, Attorney-in-Fact	28 Jan 2026	0002051551

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FUL	Common Stock	Options Exercise	$11,954	+199	+7.6%	$60.07	2,828	26 Jan 2026	Direct
transaction	FUL	Common Stock	Tax liability	$3,664	-61	-2.2%	$60.07	2,767	26 Jan 2026	Direct	F1

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	FUL	Employee Stock Option (Right-to-Buy)	Award	$655,577	+10,961		$59.81	10,961	26 Jan 2026	Common Stock	10,961	$59.81	Direct	F2
transaction	FUL	Restricted Stock Units	Options Exercise	$11,954	-199	-49%	$60.07	206	26 Jan 2026	Common Stock	199	$0.000000	Direct	F3, F4, F5
transaction	FUL	Restricted Stock Units	Award	$0	+1,616		$0.000000	1,616	26 Jan 2026	Common Stock	1,616	$0.000000	Direct	F3, F4
holding	FUL	Employee Stock Option (Right-to-Buy)						1,824	26 Jan 2026	Common Stock	1,824	$48.35	Direct	F6
holding	FUL	Employee Stock Option (Right-to-Buy)						2,744	26 Jan 2026	Common Stock	2,744	$51.89	Direct	F6
holding	FUL	Employee Stock Option (Right-to-Buy)						7,678	26 Jan 2026	Common Stock	7,678	$64.28	Direct	F2
holding	FUL	Employee Stock Option (Right-to-Buy)						2,839	26 Jan 2026	Common Stock	2,839	$68.17	Direct	F6
holding	FUL	Employee Stock Option (Right-to-Buy)						2,563	26 Jan 2026	Common Stock	2,563	$72.94	Direct	F6
holding	FUL	Employee Stock Option (Right-to-Buy)						3,566	26 Jan 2026	Common Stock	3,566	$77.72	Direct	F2
holding	FUL	Restricted Stock Units						1,360	26 Jan 2026	Common Stock	1,360	$0.000000	Direct	F3, F4, F5

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

Explanation of Responses:

Id	Content
F1	Shares withheld for taxes due on 199 shares issued.
F2	This option vests in three annual installments (33%, 33%, and 34%) beginning on the date shown.
F3	These restricted stock units convert into shares of common stock on a 1-for-1 basis.
F4	These restricted stock units vest in three annual installments (33%, 33%, and 34%) beginning on the date shown.
F5	Amount includes restricted stock units acquired pursuant to a dividend equivalent reinvestment feature.
F6	This option is 100% vested.