UniFirst CEO Sintros acquires 6,963 stock units

The two RSU awards have vesting schedules extending from October 2027 through November 2029.

Available on EDGAR 11/03/2026 - 05:02 PM EST Accepted by SEC EDGAR 11/03/2026 - 05:01 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

UniFirst Corp (UNF) Chief Executive Officer Steven S. Sintros acquired 2,907 performance-based restricted stock units on November 2, 2026; 50% remain subject to vesting on October 31, 2027, and 50% on October 31, 2028. He also acquired 6,963 restricted stock units as fiscal 2027 annual grants under the UniFirst Corporation 2023 Stock Option and Incentive Plan, vesting in three equal annual installments on November 2, 2027, 2028 and 2029. On October 31, 2026, 2,885 shares were withheld to satisfy tax withholding obligations connected with restricted stock unit vesting, at $254.84 per share.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Sintros Steven S

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F2	2,907	$0.00	$0.00
Grant/Award	Common Stock F3, F4, F5	6,963	$0.00	$0.00
Tax Withholding	Common Stock F1	2,885	$254.84	$735K

Holdings After Transaction: Common Stock — 40,967 shares (Direct)

Holdings Before and After: Common Stock, 33,982 to 40,967 shares (Direct)

Footnotes (5)

1. F1. 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. F2. Represents restricted stock units that were earned based on the achievement of certain performance criteria and that 50% of such restricted stock units remain subject to vesting on October 31, 2027 and 50% of such restricted stock units remain subject to vesting on October 31, 2028.
3. F3. 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 November 2, 2027, November 2, 2028 and November 2, 2029.
4. F4. These are annual grants for fiscal 2027.
5. F5. Consists of (i) 22,532 shares of Common Stock owned by the reporting person, (ii) 789 restricted stock units that vest in one remaining annual installment on October 31, 2027, (iii) 1,825 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028, (iii) 1,557 restricted stock units that vest in one remaining annual installment on October 31, 2027, (iv) 3,445 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028, (v) 949 restricted stock units that vest in one remaining annual installment on October 31, 2027, (vi) 2,907 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028 and (vii) 6,963 restricted stock units that vest in three equal annual installments on November 2, 2027, November 2, 2028 and November 2, 2029.

Key Figures

Performance-based restricted stock units: 2,907 shares Fiscal 2027 annual-grant restricted stock units: 6,963 shares Shares withheld for tax obligations: 2,885 shares +1 more

4 metrics

Performance-based restricted stock units 2,907 shares Acquired November 2, 2026; 50% remain subject to vesting on October 31, 2027, and 50% on October 31, 2028

Fiscal 2027 annual-grant restricted stock units 6,963 shares Acquired November 2, 2026; vest in three equal annual installments on November 2, 2027, 2028 and 2029

Shares withheld for tax obligations 2,885 shares October 31, 2026; connected with vesting restricted stock units

Price per share $254.84 per share Shares withheld for tax obligations on October 31, 2026

Key Terms

restricted stock units, 2023 Stock Option and Incentive Plan, tax withholding obligations

3 terms

restricted stock units financial

"restricted stock units that were earned based on the achievement"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2023 Stock Option and Incentive Plan financial

"granted under the UniFirst Corporation 2023 Stock Option and Incentive Plan"

tax withholding obligations financial

"to satisfy certain tax withholding obligations"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RSUs did UNF CEO Steven S. Sintros acquire?

Steven S. Sintros acquired 2,907 performance-based restricted stock units and 6,963 fiscal 2027 annual-grant restricted stock units on November 2, 2026.

How many UNF shares were withheld for tax obligations?

UniFirst withheld 2,885 common shares on October 31, 2026, to satisfy certain tax withholding obligations connected with restricted stock unit vesting; the reported price was $254.84 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 MASSACHUSETTS 01887

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/31/2026

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

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

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

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	10/31/2026		F		2,885(1)	D	$254.84	31,097	D
Common Stock	11/02/2026		A		2,907(2)	A	$0	34,004	D
Common Stock	11/02/2026		A		6,963(3)(4)	A	$0	40,967(5)	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. Represents restricted stock units that were earned based on the achievement of certain performance criteria and that 50% of such restricted stock units remain subject to vesting on October 31, 2027 and 50% of such restricted stock units remain subject to vesting on October 31, 2028.

3. 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 November 2, 2027, November 2, 2028 and November 2, 2029.

4. These are annual grants for fiscal 2027.

5. Consists of (i) 22,532 shares of Common Stock owned by the reporting person, (ii) 789 restricted stock units that vest in one remaining annual installment on October 31, 2027, (iii) 1,825 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028, (iii) 1,557 restricted stock units that vest in one remaining annual installment on October 31, 2027, (iv) 3,445 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028, (v) 949 restricted stock units that vest in one remaining annual installment on October 31, 2027, (vi) 2,907 restricted stock units that vest in two equal annual installments on October 31, 2027 and October 31, 2028 and (vii) 6,963 restricted stock units that vest in three equal annual installments on November 2, 2027, November 2, 2028 and November 2, 2029.

Remarks:

	/s/ John Dowd, Attorney-in-Fact	11/03/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)