[Form 4] UNIFIRST CORP Insider Trading Activity

Rhea-AI Filing Summary

UniFirst Corporation’s President and CEO, who also serves as a director, reported a routine equity transaction on a Form 4. On 11/19/2025, 287 shares of UniFirst common stock were withheld at a price of $159.85 per share, coded as an “F” transaction, to cover tax obligations tied to the vesting of restricted stock units. After this withholding, the reporting person beneficially owns 28,815 UniFirst equity units, consisting of common shares and multiple tranches of restricted stock units that vest in scheduled annual installments through October 31, 2028.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sintros Steven S

(Last) (First) (Middle)

C/O UNIFIRST CORP

68 JONSPIN ROAD

(Street)

WILMINGTON MA 01887

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
UNIFIRST CORP [ UNF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
11/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/19/2025		F		287(1)	D	$159.85	28,815(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares of Common Stock withheld by UniFirst Corporation to satisfy certain tax withholding obligations in connection with the vesting of certain restricted stock units.

2. 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 and (vi) 1,898 restricted stock units that vest in two equal annual installments on October 31, 2026 and October 31, 2027.

	/s/ John Dowd, Attorney-in-Fact	11/21/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transaction did UniFirst Corp (UNF) report on this Form 4?

The Form 4 reports that on 11/19/2025 the UniFirst Corp President and CEO had 287 shares of common stock withheld in a transaction coded “F” at $159.85 per share to satisfy tax withholding linked to vested restricted stock units.

Who is the reporting person in the UniFirst (UNF) Form 4 and what is their role?

The reporting person is a director and also serves as President and CEO of UniFirst Corporation, filing individually as one reporting person.

How many UniFirst (UNF) shares and units does the insider own after the reported transaction?

Following the reported transaction, the insider beneficially owns 28,815 UniFirst equity units, including 18,743 shares of common stock and multiple restricted stock unit grants that vest on specified future dates.

What is the nature of the 287 UniFirst (UNF) shares withheld in this Form 4?

The 287 UniFirst common shares were withheld by the company to cover certain tax withholding obligations arising from the vesting of restricted stock units, as explained in the filing.

What restricted stock unit vesting schedule is disclosed for the UniFirst (UNF) insider?

The insider holds several restricted stock unit tranches: 747 units vesting on October 31, 2026; 1,576 units vesting in two equal annual installments on October 31, 2026 and 2027; 2,738 units vesting in three equal annual installments on October 31, 2026, 2027 and 2028; and 3,113 and 1,898 units each vesting in two equal annual installments on October 31, 2026 and 2027.

Is the UniFirst (UNF) Form 4 filed by one or multiple reporting persons?

The Form 4 is indicated as being filed by one reporting person, not a joint or group filing.