MONTALBANO DOUGLAS J 4

4 · MATRIX SERVICE CO · Filed Sep 2, 2025

Form 4

Period: 2025-08-29

President, Matrix NAC

Transactions

Exercise/Conversion
COMMON STOCK
2025-08-30+1,210→ 55,536 total
Award
COMMON STOCK
2025-08-30+16,406→ 69,404 total
Exercise/Conversion
COMMON STOCK
2025-08-30+1,881→ 55,687 total
Exercise/Conversion
RESTRICTED STOCK UNITS
2025-08-30−1,881→ 1,881 total
From: 2023-08-30Exp: 2026-08-30→ COMMON STOCK (1,881 underlying)
Exercise/Conversion
COMMON STOCK
2025-08-29+3,529→ 59,372 total
Disposition to Issuer
COMMON STOCK
2025-08-30$15.13/sh−1,210$18,307→ 54,326 total
Disposition to Issuer
COMMON STOCK
2025-08-30$15.13/sh−1,881$28,460→ 53,806 total
Tax Payment
COMMON STOCK
2025-08-30$15.13/sh−7,052$106,697→ 62,352 total
Tax Payment
COMMON STOCK
2025-08-30$15.13/sh−520$7,868→ 53,806 total
Disposition to Issuer
COMMON STOCK
2025-08-29$15.13/sh−3,529$53,394→ 55,843 total
Exercise/Conversion
RESTRICTED STOCK UNITS
2025-08-30−1,210→ 0 total
From: 2022-08-30Exp: 2025-08-30→ COMMON STOCK (1,210 underlying)
Tax Payment
COMMON STOCK
2025-08-29$15.13/sh−1,517$22,952→ 54,326 total
Tax Payment
COMMON STOCK
2025-08-30$15.13/sh−808$12,225→ 52,998 total
Exercise/Conversion
RESTRICTED STOCK UNITS
2025-08-29−3,529→ 7,058 total
From: 2024-08-29Exp: 2027-08-29→ COMMON STOCK (3,529 underlying)

Footnotes (7)

[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.
[F2]SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED RESTRICTED STOCK UNITS.
[F3]SHARES RECEIVED ON CONVERSION OF PERFORMANCE STOCK UNIT AWARD AS PREDETERMINED MARKET-BASED CRITERIA WAS MET.
[F4]SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED PERFORMANCE STOCK UNITS.
[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.
[F6]FOR THIS SERVICE-BASED AWARD OF CASH-SETTLED RESTRICTED STOCK UNITS, 25% WILL VEST EACH YEAR FROM AUGUST 30, 2022 TO AUGUST 30, 2025.
[F7]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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