Steven S. Sintros - 16 Dec 2025 Form 4 Insider Report for UNIFIRST CORP (UNF)

Role: President and CEO, Director
Signature: /s/ John Dowd, Attorney-in-Fact
Issuer symbol: UNF
Transactions as of: 16 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 18 Dec 2025, 20:18:08 UTC
Previous filing: 21 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sintros Steven S	President and CEO, Director	C/O UNIFIRST CORP, 68 JONSPIN ROAD, WILMINGTON	/s/ John Dowd, Attorney-in-Fact	18 Dec 2025	0001453910

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	UNF	Common Stock	Award	$0	+5,167	+18%	$0.000000	33,982	16 Dec 2025	Direct	F1, F2, F3

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	UNF	Stock Appreciation Right	Award	$0	+7,410		$0.000000	7,410	16 Dec 2025	Common Stock ($0.10 par value)	7,410	$174.20	Direct	F2, F4

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

Explanation of Responses:

Id	Content
F1	Represents restricted stock units granted under the UniFirst Corporation 2023 Stock Option and Incentive Plan (the "2023 Plan"). Such restricted stock units vest in three equal annual installments on October 31, 2026, October 31, 2027 and October 31, 2028.
F2	These are annual grants for fiscal 2026.
F3	Consists of (i) 18,743 shares of Common Stock owned by the reporting person, (ii) 747 restricted stock units that vest in one remaining annual installment on October 31, 2026, (iii) 1,576 restricted stock units that vest in two remaining equal annual installments on October 31, 2026 and October 31, 2027, (iv) 2,738 restricted stock units that vest in three equal annual installments on October 31, 2026, October 31, 2027 and October 31, 2028, (v) 3,113 restricted stock units that vest in two equal annual installments on October 31, 2026 and October 31, 2027, (vi) 1,898 restricted stock units that vest in two equal annual installments on October 31, 2026 and October 31, 2027 and (vii) 5,167 restricted stock units that vest in three equal annual installments on October 31, 2026, October 31, 2027 and October 31, 2028.
F4	This stock appreciation right, which was granted under the 2023 Plan, becomes vested and exercisable in three equal annual installments on October 31, 2026, October 31, 2027 and October 31, 2028. This stock appreciation right is required to be settled in stock at the time of exercise.