PAYNE SHAWN P (President, Matrix Service) exercised options at MATRIX SERVICE CO

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 4 exercises

PAYNE SHAWN P

Filed: 8/31/2026ACC: 0000866273-26-000048

InsiderPAYNE SHAWN PCIK 1945698

→

IssuerMATRIX SERVICE COCIK 866273

Officer· President, Matrix Service

Since Sep 2022

-22.51K

Net shares

Net seller

$244.8K

Total sold

Open market trades

0B · 0S

Total transactions

13.84K acquired · 36.35K disposed

Non-Derivative Transactions13

Common Stock

Direct

M · Option Exercise

+2.84K

Price / share

—

Trade value

—

% of position

2.1%

8/27/2026

132.62K→135.46K

Common Stock

Direct

D · Disposition

−2.84K

Price / share

$10.91

Trade value

$31.02K

% of position

2.1%

8/27/2026

135.46K→132.62K

Common Stock

Direct

F · Tax Withholding

−1.12K

Price / share

$10.91

Trade value

$12.20K

% of position

0.8%

8/27/2026

132.62K→131.50K

Common Stock

Direct

M · Option Exercise

+4.10K

Price / share

—

Trade value

—

% of position

3.1%

8/27/2026

131.50K→135.60K

Common Stock

Direct

D · Disposition

−4.10K

Price / share

$10.91

Trade value

$44.77K

% of position

3.0%

8/27/2026

135.60K→131.50K

Common Stock

Direct

F · Tax Withholding

−1.61K

Price / share

$10.91

Trade value

$17.61K

% of position

1.2%

8/27/2026

131.50K→129.88K

Common Stock

Direct

F · Tax Withholding

−3.23K

Price / share

$10.91

Trade value

$35.20K

% of position

2.5%

8/27/2026

129.88K→126.66K

Common Stock

Direct

M · Option Exercise

+4.08K

Price / share

—

Trade value

—

% of position

3.2%

8/29/2026

126.66K→130.74K

Common Stock

Direct

D · Disposition

−4.08K

Price / share

$10.83

Trade value

$44.15K

% of position

3.1%

8/29/2026

130.74K→126.66K

Common Stock

Direct

F · Tax Withholding

−1.60K

Price / share

$10.83

Trade value

$17.37K

% of position

1.3%

8/29/2026

126.66K→125.05K

Common Stock

Direct

M · Option Exercise

+2.82K

Price / share

—

Trade value

—

% of position

2.3%

8/30/2026

125.05K→127.87K

Common Stock

Direct

D · Disposition

−2.82K

Price / share

$10.83

Trade value

$30.51K

% of position

2.2%

8/30/2026

127.87K→125.05K

Common Stock

Direct

F · Tax Withholding

−1.11K

Price / share

$10.83

Trade value

$12K

% of position

0.9%

8/30/2026

125.05K→123.95K

Total

Net shares

−8.67K

Net value

-$244.83K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/27/2026	M · Option Exercise	+2.84K	—	—	2.1%	132.62K	135.46K
Common Stock Direct	8/27/2026	D · Disposition	−2.84K	$10.91	$31.02K	2.1%	135.46K	132.62K
Common Stock Direct	8/27/2026	F · Tax Withholding	−1.12K	$10.91	$12.20K	0.8%	132.62K	131.50K
Common Stock Direct	8/27/2026	M · Option Exercise	+4.10K	—	—	3.1%	131.50K	135.60K
Common Stock Direct	8/27/2026	D · Disposition	−4.10K	$10.91	$44.77K	3.0%	135.60K	131.50K
Common Stock Direct	8/27/2026	F · Tax Withholding	−1.61K	$10.91	$17.61K	1.2%	131.50K	129.88K
Common Stock Direct	8/27/2026	F · Tax Withholding	−3.23K	$10.91	$35.20K	2.5%	129.88K	126.66K
Common Stock Direct	8/29/2026	M · Option Exercise	+4.08K	—	—	3.2%	126.66K	130.74K
Common Stock Direct	8/29/2026	D · Disposition	−4.08K	$10.83	$44.15K	3.1%	130.74K	126.66K
Common Stock Direct	8/29/2026	F · Tax Withholding	−1.60K	$10.83	$17.37K	1.3%	126.66K	125.05K
Common Stock Direct	8/30/2026	M · Option Exercise	+2.82K	—	—	2.3%	125.05K	127.87K
Common Stock Direct	8/30/2026	D · Disposition	−2.82K	$10.83	$30.51K	2.2%	127.87K	125.05K
Common Stock Direct	8/30/2026	F · Tax Withholding	−1.11K	$10.83	$12K	0.9%	125.05K	123.95K
Total			−8.67K		-$244.83K

Derivative Transactions4

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.84K shares

−2.84K

Strike price

Held after

5.69K

Exercisable

—

8/27/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

4.10K shares

−4.10K

Strike price

Held after

12.31K

Exercisable

—

8/27/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

4.08K shares

−4.08K

Strike price

Held after

4.08K

Exercisable

—

8/29/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.82K shares

−2.82K

Strike price

Held after

0.00

Exercisable

—

8/30/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock2.84K shares	8/27/2026	M · Option Exercise	−2.84K	—	5.69K
Restricted Stock Units Direct	Common Stock4.10K shares	8/27/2026	M · Option Exercise	−4.10K	—	12.31K
Restricted Stock Units Direct	Common Stock4.08K shares	8/29/2026	M · Option Exercise	−4.08K	—	4.08K
Restricted Stock Units Direct	Common Stock2.82K shares	8/30/2026	M · Option Exercise	−2.82K	—	0.00