Key facts
- This page summarizes David J. Miller's Form 4 filing for MATRIX SERVICE CO (MTRX).
- 18 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 04 Sep 2026, 11:04.
David J. Miller - 25 Aug 2026 Form 4 Insider Report for MATRIX SERVICE CO (MTRX)
- Reporting relationship
- VP & General Counsel
- Issuer ticker
- MTRX
- Reported as of
- 25 Aug 2026
- Net transaction value
- $0
- Reporting owner signature
- David J. Miller
Source evidence
Original filing metadata and source links for verification.
3 source fields
Reporting owner
1 detail
Key filing fact
David J. Miller filed Form 4 for MATRIX SERVICE CO (MTRX) on 04 Sep 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- 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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002153371
Primary reporting owner
MILLER DAVID (JAMES)
- Relationship
- VP & General Counsel
- Address
- 15333 JOHN F KENNEDY BOULEVARD, SUITE 400, HOUSTON
- Signature
- David J. Miller
- Signature date
- 04 Sep 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MTRX
transaction
Common Stock
Award
- Transaction value
- Shares
- +5,432
- Change %
- +26%
- Price
- $0.000000*
- Shares after
- 25,979
- Date
- 25 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
MTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +1,702
- Change %
- +6.6%
- Price
- Shares after
- 27,681
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F2
MTRX
transaction
Common Stock
Disposed to Issuer
- Transaction value
- Shares
- -1,702
- Change %
- -6.1%
- Price
- $10.91*
- Shares after
- 25,979
- Date
- 27 Aug 2026
- Ownership
- Direct
MTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -669
- Change %
- -2.6%
- Price
- $10.91*
- Shares after
- 25,310
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F3
MTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +1,607
- Change %
- +6.3%
- Price
- Shares after
- 26,917
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F2
MTRX
transaction
Common Stock
Disposed to Issuer
- Transaction value
- Shares
- -1,607
- Change %
- -6%
- Price
- $10.91*
- Shares after
- 25,310
- Date
- 27 Aug 2026
- Ownership
- Direct
MTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -632
- Change %
- -2.5%
- Price
- $10.91*
- Shares after
- 24,678
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F3
MTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +2,370
- Change %
- +9.6%
- Price
- Shares after
- 27,048
- Date
- 29 Aug 2026
- Ownership
- Direct
- Footnotes
- F2
MTRX
transaction
Common Stock
Disposed to Issuer
- Transaction value
- Shares
- -2,370
- Change %
- -8.8%
- Price
- $10.83*
- Shares after
- 24,678
- Date
- 29 Aug 2026
- Ownership
- Direct
MTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -932
- Change %
- -3.8%
- Price
- $10.83*
- Shares after
- 23,746
- Date
- 29 Aug 2026
- Ownership
- Direct
- Footnotes
- F3
MTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +967
- Change %
- +4.1%
- Price
- Shares after
- 24,713
- Date
- 30 Aug 2026
- Ownership
- Direct
- Footnotes
- F2
MTRX
transaction
Common Stock
Disposed to Issuer
- Transaction value
- Shares
- -967
- Change %
- -3.9%
- Price
- $10.83*
- Shares after
- 23,746
- Date
- 30 Aug 2026
- Ownership
- Direct
MTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -380
- Change %
- -1.6%
- Price
- $10.83*
- Shares after
- 23,366
- Date
- 30 Aug 2026
- Ownership
- Direct
- Footnotes
- F3
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
MTRX
transaction
Derivative
Restricted Stock Units
Award
- Transaction value
- Shares
- +5,432
- Change %
- Price
- $0.000000*
- Shares after
- 5,432
- Date
- 25 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,432
- Exercise price
- Footnotes
- F2, F4
MTRX
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -1,702
- Change %
- -33%
- Price
- $0.000000*
- Shares after
- 3,404
- Date
- 27 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,702
- Exercise price
- Footnotes
- F2, F5
MTRX
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -1,607
- Change %
- -25%
- Price
- $0.000000*
- Shares after
- 4,819
- Date
- 27 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,607
- Exercise price
- Footnotes
- F2, F6
MTRX
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -2,370
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 2,369
- Date
- 29 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 2,370
- Exercise price
- Footnotes
- F2, F7
MTRX
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -967
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 30 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 967
- Exercise price
- Footnotes
- F2, F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
Footnote F1
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, one-third will vest each year for the next three years on the anniversary dates.
Footnote F2
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 F3
Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.
Footnote F4
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, one-third will vest each year for the next three years on the anniversary dates.
Footnote F5
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 F6
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 F7
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 F8
For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 30, 2023 to August 30, 2026.