Justin D. Sheets - 27 Aug 2026 Form 4 Insider Report for MATRIX SERVICE CO (MTRX)

Reporting relationship: SVP, Enterprise Services
Issuer ticker: MTRX
Reported as of: 27 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 31 Aug 2026, 15:49:19 UTC
Prior SEC filing: 27 Aug 2026
Source filing: View source filing
Reporting owner signature: Justin D. Sheets

Key filing fact

Justin D. Sheets filed Form 4 for MATRIX SERVICE CO (MTRX) on 31 Aug 2026.

Key facts

This page summarizes Justin D. Sheets's Form 4 filing for MATRIX SERVICE CO (MTRX).
16 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 31 Aug 2026, 15:49.

Change

Previous filing in this sequence was filed on 27 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001682712 Primary reporting owner

SHEETS JUSTIN D

Relationship: SVP, Enterprise Services
Address: 15333 JOHN F KENNEDY BOULEVARD, SUITE 400, HOUSTON
Signature: Justin D. Sheets
Signature date: 31 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,429
Change %: +3.3%
Price
Shares after: 75,705
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F1

MTRX transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -2,429
Change %: -3.2%
Price: $10.91^*
Shares after: 73,276
Date: 27 Aug 2026
Ownership: Direct

MTRX transaction

Common Stock

Tax liability

Transaction value
Shares: -907
Change %: -1.2%
Price: $10.91^*
Shares after: 72,369
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F2

MTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,697
Change %: +2.3%
Price
Shares after: 74,066
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F1

MTRX transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -1,697
Change %: -2.3%
Price: $10.91^*
Shares after: 72,369
Date: 27 Aug 2026
Ownership: Direct

MTRX transaction

Common Stock

Tax liability

Transaction value
Shares: -633
Change %: -0.87%
Price: $10.91^*
Shares after: 71,736
Date: 27 Aug 2026
Ownership: Direct
Footnotes: F2

MTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +3,482
Change %: +4.9%
Price
Shares after: 75,218
Date: 29 Aug 2026
Ownership: Direct
Footnotes: F1

MTRX transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -3,482
Change %: -4.6%
Price: $10.83^*
Shares after: 71,736
Date: 29 Aug 2026
Ownership: Direct

MTRX transaction

Common Stock

Tax liability

Transaction value
Shares: -1,300
Change %: -1.8%
Price: $10.83^*
Shares after: 70,436
Date: 29 Aug 2026
Ownership: Direct
Footnotes: F2

MTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,576
Change %: +3.7%
Price
Shares after: 73,012
Date: 30 Aug 2026
Ownership: Direct
Footnotes: F1

MTRX transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -2,576
Change %: -3.5%
Price: $10.83^*
Shares after: 70,436
Date: 30 Aug 2026
Ownership: Direct

MTRX transaction

Common Stock

Tax liability

Transaction value
Shares: -962
Change %: -1.4%
Price: $10.83^*
Shares after: 69,474
Date: 30 Aug 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -2,429
Change %: -33%
Price: $0.000000^*
Shares after: 4,857
Date: 27 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,429
Exercise price
Footnotes: F1, F3

MTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,697
Change %: -25%
Price: $0.000000^*
Shares after: 5,090
Date: 27 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,697
Exercise price
Footnotes: F1, F4

MTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -3,482
Change %: -50%
Price: $0.000000^*
Shares after: 3,482
Date: 29 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,482
Exercise price
Footnotes: F1, F5

MTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -2,576
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 30 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,576
Exercise price
Footnotes: F1, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote 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.

Footnote F2

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

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.