Matrix Service (MTRX) insider reports new stock trades

Rhea-AI Filing Summary

MATRIX SERVICE CO (symbol: MTRX) is the issuer of record for a Form 4 filing submitted to the SEC.

Insider Trade Summary

Net Seller: 8,670 shares

Net Sell 17 txns

Insider PAYNE SHAWN P

Role President & CEO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F1, F6	2,817	$0.00	$0.00
Exercise	Common Stock F1	2,817	--	--
Disposition	Common Stock	2,817	$10.83	$31K
Tax Withholding	Common Stock F2	1,108	$10.83	$12K
Exercise	Restricted Stock Units F1, F5	4,077	$0.00	$0.00
Exercise	Common Stock F1	4,077	--	--
Disposition	Common Stock	4,077	$10.83	$44K
Tax Withholding	Common Stock F2	1,604	$10.83	$17K
Exercise	Restricted Stock Units F1, F3	2,843	$0.00	$0.00
Exercise	Restricted Stock Units F1, F4	4,104	$0.00	$0.00
Exercise	Common Stock F1	2,843	--	--
Disposition	Common Stock	2,843	$10.91	$31K
Tax Withholding	Common Stock F2	1,118	$10.91	$12K
Exercise	Common Stock F1	4,104	--	--
Disposition	Common Stock	4,104	$10.91	$45K
Tax Withholding	Common Stock F2	1,614	$10.91	$18K
Tax Withholding	Common Stock F2	3,226	$10.91	$35K

Holdings After Transaction: Restricted Stock Units — 22,075 shares (Direct); Common Stock — 123,946 shares (Direct)

Footnotes (6)

1. F1. 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.
2. F2. Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.
3. F3. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2025 to August 27, 2028.
4. F4. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2026 to August 27, 2029.
5. F5. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 29, 2024 to August 29, 2027.
6. F6. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 30, 2023 to August 30, 2026.

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Available on EDGAR 08/31/2026 - 03:34 PM Accepted by SEC EDGAR 08/31/2026 - 03:34 PM Learn about SEC filing dates

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^*

PAYNE SHAWN P

(Last) (First) (Middle)

15333 JOHN F KENNEDY BOULEVARD

SUITE 400

(Street)

HOUSTON TEXAS 77032

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MATRIX SERVICE CO [ MTRX ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2026

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	08/27/2026		M		2,843	A	(1)	135,459	D
Common Stock	08/27/2026		D		2,843	D	$10.91	132,616	D
Common Stock	08/27/2026		F		1,118(2)	D	$10.91	131,498	D
Common Stock	08/27/2026		M		4,104	A	(1)	135,602	D
Common Stock	08/27/2026		D		4,104	D	$10.91	131,498	D
Common Stock	08/27/2026		F		1,614(2)	D	$10.91	129,884	D
Common Stock	08/27/2026		F		3,226(2)	D	$10.91	126,658	D
Common Stock	08/29/2026		M		4,077	A	(1)	130,735	D
Common Stock	08/29/2026		D		4,077	D	$10.83	126,658	D
Common Stock	08/29/2026		F		1,604(2)	D	$10.83	125,054	D
Common Stock	08/30/2026		M		2,817	A	(1)	127,871	D
Common Stock	08/30/2026		D		2,817	D	$10.83	125,054	D
Common Stock	08/30/2026		F		1,108(2)	D	$10.83	123,946	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
Restricted Stock Units	(1)	08/27/2026		M			2,843	08/27/2025(3)	08/27/2028	Common Stock	2,843	$0	5,686	D
Restricted Stock Units	(1)	08/27/2026		M			4,104	08/27/2026(4)	08/27/2029	Common Stock	4,104	$0	12,312	D
Restricted Stock Units	(1)	08/29/2026		M			4,077	08/29/2024(5)	08/29/2027	Common Stock	4,077	$0	4,077	D
Restricted Stock Units	(1)	08/30/2026		M			2,817	08/30/2023(6)	08/30/2026	Common Stock	2,817	$0	0	D

Explanation of Responses:

1. 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.

2. Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

3. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2025 to August 27, 2028.

4. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2026 to August 27, 2029.

5. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 29, 2024 to August 29, 2027.

6. For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 30, 2023 to August 30, 2026.

Remarks:

	Shawn P. Payne	08/31/2026
	** 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)