Company · CIK 0000866273 · SIC 1700 — Construction - Special Trade Contractors · Nasdaq

MATRIX SERVICE CO · MTRX

Insider activity reported against this company. All insider holders · On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Reported at this company — common stock

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Aug 27, 2026 DFMForm 4 →	Aug 31, 3:49 pm EDT	Justin D SheetsSVP, Enterprise Services	24,170	$10.86	$151,922	69,474	—
Aug 27, 2026 DFMForm 4 →	Aug 31, 3:36 pm EDT	Kevin S CavanahVP Finance & CFO	42,421	$10.86	$264,612	80,814	—
Aug 27, 2026 DFMForm 4 →	Aug 31, 3:34 pm EDT	Shawn P PaynePresident & CEO, Director	36,352	$10.88	$244,827	123,946	—
Aug 25, 2026 ADFMForm 4 →	Sep 4, 11:04 am EDT	David (james) MillerVP & General Counsel	21,337	$10.87	$100,644	23,366	—	late
Aug 25, 2026 AForm 4 →	Aug 27, 1:02 pm EDT	Justin D SheetsSVP, Enterprise Services	8,939	—	—	73,276	—
Aug 25, 2026 AForm 4 →	Aug 27, 1:01 pm EDT	Shawn P PaynePresident & CEO, Director	30,437	—	—	132,616	—

Reported at this company — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Aug 27, 2026 MForm 4 →	Aug 31, 3:49 pm EDT	Justin D SheetsSVP, Enterprise Services	10,184	—	—	0	—
Aug 27, 2026 MForm 4 →	Aug 31, 3:36 pm EDT	Kevin S CavanahVP Finance & CFO	18,061	—	—	0	—
Aug 27, 2026 MForm 4 →	Aug 31, 3:34 pm EDT	Shawn P PaynePresident & CEO, Director	13,841	—	—	0	—
Aug 25, 2026 AMForm 4 →	Sep 4, 11:04 am EDT	David (james) MillerVP & General Counsel	12,078	—	—	0	—	late
Aug 25, 2026 AForm 4 →	Aug 27, 1:02 pm EDT	Justin D SheetsSVP, Enterprise Services	8,939	—	—	8,939	—
Aug 25, 2026 AForm 4 →	Aug 27, 1:01 pm EDT	Shawn P PaynePresident & CEO, Director	30,437	—	—	30,437	—