Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * SHEETS JUSTIN D 2. Issuer Name and Ticker or Trading Symbol MATRIX SERVICE CO [MTRX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP, Legal & Ops Services (Last) (First) (Middle) 15 EAST 5TH STREET, SUITE 1100 3. Date of Earliest Transaction (Month/Day/Year) 08/27/2025 (Street) TULSA, OK 74103 4. If Amendment, Date 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 (City) (State) (Zip) 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 08/27/2025 A 6,787(1) A $ 0 71,805 D COMMON STOCK 08/27/2025 M 2,429 A (2) 74,234 D COMMON STOCK 08/27/2025 D 2,429 D $15.37 71,805 D COMMON STOCK 08/27/2025 F 949(3) D $15.37 70,856 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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

RESTRICTED STOCK UNITS

(2)

08/27/2025

A

6,787(4)

08/27/2026

08/27/2029

COMMON STOCK

6,787

$ 0

6,787

D

RESTRICTED STOCK UNITS

(2)

08/27/2025

M

2,429

08/27/2025(5)

08/27/2028

COMMON STOCK

2,429

$ 0

7,286

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SHEETS JUSTIN D 15 EAST 5TH STREET SUITE 1100 TULSA, OK 74103			VP, Legal & Ops Services

Signatures

Justin D. Sheets		08/28/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	RESTRICTED STOCK UNIT - EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF MATRIX SERVICE COMPANY COMMON STOCK IF AND WHEN THE CONDITIONS OF THE RESTRICTION HAVE BEEN SATISFIED. FOR THIS GRANT, 25% WILL VEST EACH YEAR FOR THE NEXT FOUR YEARS ON THE ANNIVERSARY DATES.
(2)	EACH RESTRICTED STOCK UNIT IS THE ECONOMIC EQUIVALENT OF ONE SHARE OF MATRIX SERVICE COMPANY COMMON STOCK. ALL RESTRICTED STOCK UNITS ARE SETTLED SOLELY IN CASH WHEN VESTED.
(3)	SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED RESTRICTED STOCK UNITS.
(4)	EACH UNIT WILL ENTITLE THE REPORTING PERSON TO THE CASH EQUIVALENT OF ONE SHARE OF MATRIX SERVICE COMPANY COMMON STOCK IF AND WHEN THE CONDITIONS OF THE RESTRICTION HAVE BEEN SATISFIED. FOR THIS GRANT, 25% WILL VEST EACH YEAR FOR THE NEXT FOUR YEARS ON THE ANNIVERSARY DATES.
(5)	FOR THIS SERVICE-BASED AWARD OF CASH-SETTLED RESTRICTED STOCK UNITS, 25% WILL VEST EACH YEAR FROM AUGUST 27, 2025 TO AUGUST 27, 2028.

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