MTRX

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 7

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,658

F2 · shares: Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 6

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,884

F2 · shares: Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 5

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,498

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 4

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,602

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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.

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 3

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,498

F2 · shares: Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 2

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,616

SEC source: 0000866273-26-000048 · wk-form4_1788204839.xml · nonDerivative · entry 1

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,459

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · derivative · entry 16

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,819

Underlying: Common Stock · 1,607 shares

Expires 2029-08-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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.

F6 · derivative.exercise_date: For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2026 to August 27, 2029.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · derivative · entry 15

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,404

Underlying: Common Stock · 1,702 shares

Expires 2028-08-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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.

F5 · derivative.exercise_date: For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2025 to August 27, 2028.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 7

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,678

F3 · shares: Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 6

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,310

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 5

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,917

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: 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.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 4

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,310

F3 · shares: Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 3

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,979

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 2

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,681

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: 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.

SEC source: 0000866273-26-000044 · wk-form4_1787850129.xml · derivative · entry 2

SHEETS JUSTIN D · CIK 0001682712 · SVP, Enterprise Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,939

Underlying: Common Stock · 8,939 shares

Expires 2029-08-25

F2 · derivative.exercise_price: 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.

F3 · shares: 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.

SEC source: 0000866273-26-000044 · wk-form4_1787850129.xml · nonDerivative · entry 1

SHEETS JUSTIN D · CIK 0001682712 · SVP, Enterprise Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,276

F1 · shares: 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.

SEC source: 0000866273-26-000043 · wk-form4_1787850080.xml · derivative · entry 2

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,437

Underlying: Common Stock · 30,437 shares

Expires 2029-08-25

F2 · derivative.exercise_price: 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.

F3 · shares: 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.

SEC source: 0000866273-26-000043 · wk-form4_1787850080.xml · nonDerivative · entry 1

PAYNE SHAWN P · CIK 0001945698 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,616

F1 · shares: 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.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · derivative · entry 14

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,432

Underlying: Common Stock · 5,432 shares

Expires 2029-08-25

F2 · derivative.exercise_price: 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.

F4 · shares: 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.

SEC source: 0000866273-26-000061 · wk-form4_1788534237.xml · nonDerivative · entry 1

MILLER DAVID (JAMES) · CIK 0002153371 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,979

F1 · shares: 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.

SEC source: 0000866273-26-000038 · wk-form4_1781553899.xml · nonDerivative · entry 2

Cavanah Kevin S · CIK 0001409823 · VP Finance & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,113

F1 · shares: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2026.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.00 TO $14.04, inclusive. The reporting person undertakes to provide to Matrix Service Company, any security holder of Matrix Service Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth.

SEC source: 0000866273-26-000038 · wk-form4_1781553899.xml · nonDerivative · entry 1

Cavanah Kevin S · CIK 0001409823 · VP Finance & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 88,531

F1 · shares: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2026.

SEC source: 0000866273-26-000036 · wk-form4_1781553407.xml · nonDerivative · entry 1

SHEETS JUSTIN D · CIK 0001682712 · SVP, Enterprise Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,337

SEC source: 0000866273-26-000034 · wk-form4_1780949009.xml · nonDerivative · entry 2

Cavanah Kevin S · CIK 0001409823 · VP Finance & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 90,604

F1 · shares: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2026.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.005 TO $14.2499, inclusive. The reporting person undertakes to provide to Matrix Service Company, any security holder of Matrix Service Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth.

SEC source: 0000866273-26-000034 · wk-form4_1780949009.xml · nonDerivative · entry 1

Cavanah Kevin S · CIK 0001409823 · VP Finance & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,113

F1 · shares: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2026.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.00 TO $14.26, inclusive. The reporting person undertakes to provide to Matrix Service Company, any security holder of Matrix Service Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth.

SEC source: 0000866273-26-000032 · wk-form4_1779832799.xml · nonDerivative · entry 1

Cavanah Kevin S · CIK 0001409823 · VP Finance & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 147,113

F1 · shares: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2026.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.79 TO $13.06, inclusive. The reporting person undertakes to provide to Matrix Service Company, any security holder of Matrix Service Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth.

SEC source: 0001519321-26-000002 · wk-form4_1778603278.xml · nonDerivative · entry 1

HEWITT JOHN R · CIK 0001519321 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 581,806

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.50 TO $12.59, inclusive. The reporting person undertakes to provide to Matrix Service Company, any security holder of Matrix Service Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth.

SEC source: 0000866273-26-000018 · wk-form4_1771519395.xml · nonDerivative · entry 1

AUSTIN NANCY E · CIK 0001349287 · VP, Chief Admin Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,138

F1 · price: THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE. THESE SHARES WERE SOLD IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $11.20 TO $11.35, INCLUSIVE. THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH.

SEC source: 0000866273-25-000112 · wk-form4_1764107201.xml · nonDerivative · entry 1

PAYNE SHAWN P · CIK 0001945698 · President, Eng & Constr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,179

F1 · price: THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE. THESE SHARES WERE SOLD IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $11.375 TO $11.48, INCLUSIVE. THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH.

SEC source: 0000866273-25-000110 · wk-form4_1764019631.xml · nonDerivative · entry 1

PAYNE SHAWN P · CIK 0001945698 · President, Eng & Constr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,410

F1 · price: THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE. THESE SHARES WERE SOLD IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $11.305 TO $11.515, INCLUSIVE. THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH.

SEC source: 0000866273-25-000108 · wk-form4_1762984560.xml · nonDerivative · entry 1

PAYNE SHAWN P · CIK 0001945698 · President, Eng & Constr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,429

F1 · price: THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE. THESE SHARES WERE SOLD IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $12.50 TO $12.79, INCLUSIVE. THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH.

SEC source: 0000866273-25-000095 · wk-form4_1762371997.xml · nonDerivative · entry 1

Carnes Martha Z. · CIK 0001678397 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,183

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000091 · wk-form4_1762369276.xml · nonDerivative · entry 1

MILLER JAMES HARRY · CIK 0001608365 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,078

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000089 · wk-form4_1762369143.xml · nonDerivative · entry 1

Hinrichs Liane K · CIK 0001349093 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,288

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000087 · wk-form4_1762368993.xml · nonDerivative · entry 1

Conner Carlin G. · CIK 0001523424 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,219

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000083 · wk-form4_1762368520.xml · nonDerivative · entry 1

Bustamante Jose Luis M. · CIK 0001643588 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,624

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000085 · wk-form4_1762368850.xml · nonDerivative · entry 1

CHANDLER JOHN D · CIK 0001188020 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,039

F1 · shares: 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, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE.

SEC source: 0000866273-25-000071 · wk-form4_1758144769.xml · nonDerivative · entry 1

CHANDLER JOHN D · CIK 0001188020 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,053

F1 · price: THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE. THESE SHARES WERE PURCHASED IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $12.71 TO $12.7851, INCLUSIVE. THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES PURCHASED AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · derivative · entry 14

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,881

Underlying: COMMON STOCK · 1,881 shares

Expires 2026-08-30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F7 · derivative.exercise_date: FOR THIS SERVICE-BASED AWARD OF CASH-SETTLED RESTRICTED STOCK UNITS, 25% WILL VEST EACH YEAR FROM AUGUST 30, 2023 TO AUGUST 30, 2026.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · derivative · entry 13

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 1,210 shares

Expires 2025-08-30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F6 · derivative.exercise_date: FOR THIS SERVICE-BASED AWARD OF CASH-SETTLED RESTRICTED STOCK UNITS, 25% WILL VEST EACH YEAR FROM AUGUST 30, 2022 TO AUGUST 30, 2025.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 11

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,352

F4 · shares: SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED PERFORMANCE STOCK UNITS.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 10

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,404

F3 · shares: SHARES RECEIVED ON CONVERSION OF PERFORMANCE STOCK UNIT AWARD AS PREDETERMINED MARKET-BASED CRITERIA WAS MET.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 9

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,998

F2 · shares: SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED RESTRICTED STOCK UNITS.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 8

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,806

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 7

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,687

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 6

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,806

F2 · shares: SHARES DISPOSED TO SATISFY TAX OBLIGATION DUE ON VEST DATE FOR STOCK-SETTLED RESTRICTED STOCK UNITS.

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 5

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,326

SEC source: 0000866273-25-000060 · wk-form4_1756847810.xml · nonDerivative · entry 4

MONTALBANO DOUGLAS J · CIK 0001991888 · President, Matrix NAC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,536

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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.

SEC source: 0000866273-25-000061 · wk-form4_1756847869.xml · derivative · entry 14

SHEETS JUSTIN D · CIK 0001682712 · VP, Legal & Ops Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,576

Underlying: COMMON STOCK · 2,577 shares

Expires 2026-08-30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F7 · derivative.exercise_date: FOR THIS SERVICE-BASED AWARD OF CASH-SETTLED RESTRICTED STOCK UNITS, 25% WILL VEST EACH YEAR FROM AUGUST 30, 2023 TO AUGUST 30, 2026.