SEC Filing | Matrix Service Company

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SEC FORM 3SEC Form 3

FORM 3

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

INITIAL STATEMENT OF 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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1. Name and Address of Reporting Person^*

MILLER DAVID (JAMES)

(Last)

(First)

(Middle)

15333 JOHN F KENNEDY BOULEVARD

SUITE 400

(Street)

HOUSTON

77032

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
08/25/2026

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

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

	Director	10% Owner
	Officer (give title below)	Other (specify below)
VP & General Counsel

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	20,547	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Restricted Stock Units	08/30/2023⁽¹⁾	08/30/2026	Common Stock	967	⁽²⁾	D
Restricted Stock Units	08/29/2024⁽³⁾	08/29/2027	Common Stock	4,739	⁽²⁾	D
Restricted Stock Units	08/27/2025⁽⁴⁾	08/27/2028	Common Stock	5,106	⁽²⁾	D
Restricted Stock Units	08/27/2026⁽⁵⁾	08/27/2029	Common Stock	6,426	⁽²⁾	D

Explanation of Responses:

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

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

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

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

Remarks:

	David J. Miller	09/04/2026
	** 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 5 (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.