Justin D Sheets

Insider

First SEC filing: Aug. 24, 2016 · Latest: June 15, 2026

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MTRX selling June 12, 2026

Insider transactions

0 buys (P) 1 sells (S) Net: $-229,378 + 97 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

97 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 12, 2026	MTRX	S	16,991	$13.50	$229,378	64,337 Direct	-20.89%	Disposed	-15.0% (price as of 2026-08-19)
Aug. 30, 2025	MTRX	M	2,162	—	—	71,657 Direct	+3.11%	Acquired	(price as of 2026-08-19)
Aug. 30, 2025	MTRX	M	2,577	—	—	2,576 Direct	-50.01%	Disposed	(price as of 2026-08-19)
Aug. 30, 2025	MTRX	M	2,162	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Aug. 30, 2025	MTRX	F	8,786	$15.13	$132,932	81,328 Direct	-9.75%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 30, 2025	MTRX	A	22,471	—	—	90,114 Direct	+33.22%	Acquired	(price as of 2026-08-19)
Aug. 30, 2025	MTRX	F	1,007	$15.13	$15,236	67,643 Direct	-1.47%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 30, 2025	MTRX	D	2,577	$15.13	$38,990	68,650 Direct	-3.62%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 30, 2025	MTRX	M	2,577	—	—	71,227 Direct	+3.75%	Acquired	(price as of 2026-08-19)
Aug. 30, 2025	MTRX	F	845	$15.13	$12,785	68,650 Direct	-1.22%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 30, 2025	MTRX	D	2,162	$15.13	$32,711	69,495 Direct	-3.02%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 29, 2025	MTRX	M	3,483	—	—	6,964 Direct	-33.34%	Disposed	(price as of 2026-08-19)
Aug. 29, 2025	MTRX	F	1,361	$15.13	$20,592	69,495 Direct	-1.92%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 29, 2025	MTRX	D	3,483	$15.13	$52,698	70,856 Direct	-4.69%	Disposed	-24.1% (price as of 2026-08-19)
Aug. 29, 2025	MTRX	M	3,483	—	—	74,339 Direct	+4.92%	Acquired	(price as of 2026-08-19)
Aug. 27, 2025	MTRX	M	2,429	—	—	7,286 Direct	-25.00%	Disposed	(price as of 2026-08-19)
Aug. 27, 2025	MTRX	A	6,787	—	—	6,787 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 27, 2025	MTRX	F	949	$15.37	$14,586	70,856 Direct	-1.32%	Disposed	-25.3% (price as of 2026-08-19)
Aug. 27, 2025	MTRX	D	2,429	$15.37	$37,334	71,805 Direct	-3.27%	Disposed	-25.3% (price as of 2026-08-19)
Aug. 27, 2025	MTRX	M	2,429	—	—	74,234 Direct	+3.38%	Acquired	(price as of 2026-08-19)
Aug. 27, 2025	MTRX	A	6,787	—	—	71,805 Direct	+10.44%	Acquired	(price as of 2026-08-19)
Aug. 30, 2024	MTRX	M	2,577	—	—	5,153 Direct	-33.34%	Disposed	(price as of 2026-08-19)
Aug. 30, 2024	MTRX	M	2,162	—	—	2,162 Direct	-50.00%	Disposed	(price as of 2026-08-19)
Aug. 30, 2024	MTRX	F	1,910	$9.96	$19,024	65,018 Direct	-2.85%	Disposed	15.3% (price as of 2026-08-19)
Aug. 30, 2024	MTRX	A	4,887	—	—	66,928 Direct	+7.88%	Acquired	(price as of 2026-08-19)
Aug. 30, 2024	MTRX	F	1,007	$9.96	$10,030	62,041 Direct	-1.60%	Disposed	15.3% (price as of 2026-08-19)
Aug. 30, 2024	MTRX	D	2,577	$9.96	$25,667	63,048 Direct	-3.93%	Disposed	15.3% (price as of 2026-08-19)
Aug. 30, 2024	MTRX	M	2,577	—	—	65,625 Direct	+4.09%	Acquired	(price as of 2026-08-19)
Aug. 30, 2024	MTRX	F	845	$9.96	$8,416	63,048 Direct	-1.32%	Disposed	15.3% (price as of 2026-08-19)
Aug. 30, 2024	MTRX	D	2,162	$9.96	$21,534	63,893 Direct	-3.27%	Disposed	15.3% (price as of 2026-08-19)
Aug. 30, 2024	MTRX	M	2,162	—	—	66,055 Direct	+3.38%	Acquired	(price as of 2026-08-19)
Aug. 29, 2024	MTRX	M	3,483	—	—	10,447 Direct	-25.00%	Disposed	(price as of 2026-08-19)
Aug. 29, 2024	MTRX	F	1,361	$9.95	$13,542	63,893 Direct	-2.09%	Disposed	15.4% (price as of 2026-08-19)
Aug. 29, 2024	MTRX	D	3,483	$9.95	$34,656	65,254 Direct	-5.07%	Disposed	15.4% (price as of 2026-08-19)
Aug. 29, 2024	MTRX	M	3,483	—	—	68,737 Direct	+5.34%	Acquired	(price as of 2026-08-19)
Aug. 27, 2024	MTRX	A	9,715	—	—	9,715 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 27, 2024	MTRX	A	9,715	—	—	65,254 Direct	+17.49%	Acquired	(price as of 2026-08-19)
Aug. 24, 2024	MTRX	M	1,989	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Aug. 24, 2024	MTRX	F	777	$10.00	$7,770	55,539 Direct	-1.38%	Disposed	14.8% (price as of 2026-08-19)
Aug. 24, 2024	MTRX	D	1,989	$10.00	$19,890	56,316 Direct	-3.41%	Disposed	14.8% (price as of 2026-08-19)
Aug. 24, 2024	MTRX	M	1,989	—	—	58,305 Direct	+3.53%	Acquired	(price as of 2026-08-19)
Dec. 5, 2023	MTRX	S	10,961	$10.13	$111,035	56,316 Direct	-16.29%	Disposed	13.3% (price as of 2026-08-19)
Aug. 30, 2023	MTRX	M	2,577	—	—	7,730 Direct	-25.00%	Disposed	(price as of 2026-08-19)
Aug. 30, 2023	MTRX	M	2,162	—	—	4,324 Direct	-33.33%	Disposed	(price as of 2026-08-19)
Aug. 30, 2023	MTRX	F	1,007	$8.53	$8,590	67,277 Direct	-1.47%	Disposed	34.6% (price as of 2026-08-19)
Aug. 30, 2023	MTRX	F	845	$8.53	$7,208	68,284 Direct	-1.22%	Disposed	34.6% (price as of 2026-08-19)
Aug. 30, 2023	MTRX	D	2,577	$8.53	$21,982	69,129 Direct	-3.59%	Disposed	34.6% (price as of 2026-08-19)
Aug. 30, 2023	MTRX	M	2,577	—	—	71,706 Direct	+3.73%	Acquired	(price as of 2026-08-19)
Aug. 30, 2023	MTRX	D	2,162	$8.53	$18,442	69,129 Direct	-3.03%	Disposed	34.6% (price as of 2026-08-19)
Aug. 30, 2023	MTRX	M	2,162	—	—	71,291 Direct	+3.13%	Acquired	(price as of 2026-08-19)
Aug. 29, 2023	MTRX	A	13,930	—	—	13,930 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 29, 2023	MTRX	A	13,930	—	—	69,129 Direct	+25.24%	Acquired	(price as of 2026-08-19)
Aug. 26, 2023	MTRX	F	662	$7.96	$5,270	55,199 Direct	-1.19%	Disposed	44.2% (price as of 2026-08-19)
Aug. 24, 2023	MTRX	M	1,989	—	—	1,989 Direct	-50.00%	Disposed	(price as of 2026-08-19)
Aug. 24, 2023	MTRX	F	777	$7.89	$6,131	55,861 Direct	-1.37%	Disposed	45.5% (price as of 2026-08-19)
Aug. 24, 2023	MTRX	D	1,989	$7.89	$15,693	56,638 Direct	-3.39%	Disposed	45.5% (price as of 2026-08-19)
Aug. 24, 2023	MTRX	M	1,989	—	—	58,627 Direct	+3.51%	Acquired	(price as of 2026-08-19)
Aug. 30, 2022	MTRX	A	10,307	—	—	10,307 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 30, 2022	MTRX	M	2,163	—	—	6,486 Direct	-25.01%	Disposed	(price as of 2026-08-19)
Aug. 30, 2022	MTRX	A	10,307	—	—	56,638 Direct	+22.25%	Acquired	(price as of 2026-08-19)
Aug. 30, 2022	MTRX	F	845	$5.78	$4,884	46,331 Direct	-1.79%	Disposed	98.6% (price as of 2026-08-19)
Aug. 30, 2022	MTRX	D	2,163	$5.78	$12,502	47,176 Direct	-4.38%	Disposed	98.6% (price as of 2026-08-19)
Aug. 30, 2022	MTRX	M	2,163	—	—	49,339 Direct	+4.58%	Acquired	(price as of 2026-08-19)
Aug. 27, 2022	MTRX	F	533	$5.92	$3,155	47,176 Direct	-1.12%	Disposed	93.9% (price as of 2026-08-19)
Aug. 26, 2022	MTRX	F	662	$5.92	$3,919	47,709 Direct	-1.37%	Disposed	93.9% (price as of 2026-08-19)
Aug. 24, 2022	MTRX	M	1,990	—	—	3,978 Direct	-33.34%	Disposed	(price as of 2026-08-19)
Aug. 24, 2022	MTRX	F	778	$5.82	$4,528	48,371 Direct	-1.58%	Disposed	97.3% (price as of 2026-08-19)
Aug. 24, 2022	MTRX	D	1,990	$5.82	$11,582	49,149 Direct	-3.89%	Disposed	97.3% (price as of 2026-08-19)
Aug. 24, 2022	MTRX	M	1,990	—	—	51,139 Direct	+4.05%	Acquired	(price as of 2026-08-19)
Aug. 30, 2021	MTRX	A	8,649	—	—	8,649 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 30, 2021	MTRX	A	8,649	—	—	49,149 Direct	+21.36%	Acquired	(price as of 2026-08-19)
Aug. 29, 2021	MTRX	F	690	$11.33	$7,818	40,500 Direct	-1.68%	Disposed	1.3% (price as of 2026-08-19)
Aug. 27, 2021	MTRX	F	537	$11.33	$6,084	41,190 Direct	-1.29%	Disposed	1.3% (price as of 2026-08-19)
Aug. 26, 2021	MTRX	F	667	$10.75	$7,170	41,727 Direct	-1.57%	Disposed	6.8% (price as of 2026-08-19)
Aug. 24, 2021	MTRX	M	1,990	—	—	5,968 Direct	-25.01%	Disposed	(price as of 2026-08-19)
Aug. 24, 2021	MTRX	F	783	$10.98	$8,597	42,394 Direct	-1.81%	Disposed	4.6% (price as of 2026-08-19)
Aug. 24, 2021	MTRX	D	1,990	$10.98	$21,850	43,177 Direct	-4.41%	Disposed	4.6% (price as of 2026-08-19)
Aug. 24, 2021	MTRX	M	1,990	—	—	45,167 Direct	+4.61%	Acquired	(price as of 2026-08-19)
May 14, 2021	MTRX	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
May 14, 2021	MTRX	S	2,000	$12.46	$24,920	43,177 Direct	-4.43%	Disposed	-7.9% (price as of 2026-08-19)
May 14, 2021	MTRX	M	2,000	$10.19	$20,380	45,177 Direct	+4.63%	Acquired	12.7% (price as of 2026-08-19)
Aug. 29, 2020	MTRX	F	2,948	$9.21	$27,151	43,177 Direct	-6.39%	Disposed	24.6% (price as of 2026-08-19)
Aug. 29, 2020	MTRX	A	7,493	—	—	46,125 Direct	+19.40%	Acquired	(price as of 2026-08-19)
Aug. 29, 2020	MTRX	F	690	$9.21	$6,355	38,632 Direct	-1.75%	Disposed	24.6% (price as of 2026-08-19)
Aug. 27, 2020	MTRX	F	537	$8.85	$4,752	39,322 Direct	-1.35%	Disposed	29.7% (price as of 2026-08-19)
Aug. 26, 2020	MTRX	F	667	$8.69	$5,796	39,859 Direct	-1.65%	Disposed	32.1% (price as of 2026-08-19)
Aug. 24, 2020	MTRX	A	7,958	—	—	7,958 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 24, 2020	MTRX	A	7,958	—	—	40,526 Direct	+24.44%	Acquired	(price as of 2026-08-19)
Aug. 23, 2020	MTRX	F	445	$9.15	$4,072	32,568 Direct	-1.35%	Disposed	25.5% (price as of 2026-08-19)
Aug. 29, 2019	MTRX	F	515	$21.81	$11,232	33,013 Direct	-1.54%	Disposed	-47.4% (price as of 2026-08-19)
Aug. 27, 2019	MTRX	F	292	$18.51	$5,405	33,528 Direct	-0.86%	Disposed	-38.0% (price as of 2026-08-19)
Aug. 27, 2019	MTRX	F	400	$18.51	$7,404	33,820 Direct	-1.17%	Disposed	-38.0% (price as of 2026-08-19)
Aug. 26, 2019	MTRX	A	6,782	—	—	34,220 Direct	+24.72%	Acquired	(price as of 2026-08-19)
Aug. 26, 2019	MTRX	F	1,182	$19.04	$22,505	27,438 Direct	-4.13%	Disposed	-39.7% (price as of 2026-08-19)
Aug. 26, 2019	MTRX	A	4,029	—	—	28,620 Direct	+16.38%	Acquired	(price as of 2026-08-19)
Aug. 25, 2019	MTRX	F	204	$19.42	$3,962	24,591 Direct	-0.82%	Disposed	-40.9% (price as of 2026-08-19)
Aug. 23, 2019	MTRX	F	332	$19.42	$6,447	24,795 Direct	-1.32%	Disposed	-40.9% (price as of 2026-08-19)
Sept. 26, 2018	MTRX	F	143	$24.40	$3,489	25,127 Direct	-0.57%	Disposed	-53.0% (price as of 2026-08-19)
Aug. 29, 2018	MTRX	F	515	$21.32	$10,980	25,270 Direct	-2.00%	Disposed	-46.2% (price as of 2026-08-19)
Aug. 27, 2018	MTRX	A	995	—	—	25,785 Direct	+4.01%	Acquired	(price as of 2026-08-19)

Showing latest 100 of 118 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Aug. 30, 2025	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (2,577)	—	Aug. 30, 2026	2,577	Disposed
Aug. 30, 2025	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (2,162)	—	Aug. 30, 2025	2,162	Disposed
Aug. 29, 2025	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (3,483)	—	Aug. 29, 2027	3,483	Disposed
Aug. 27, 2025	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (2,429)	—	Aug. 27, 2028	2,429	Disposed
Aug. 27, 2025	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (6,787)	—	Aug. 27, 2029	6,787	Acquired
Aug. 30, 2024	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (2,577)	—	Aug. 30, 2026	2,577	Disposed
Aug. 30, 2024	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (2,162)	—	Aug. 30, 2025	2,162	Disposed
Aug. 29, 2024	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (3,483)	—	Aug. 29, 2027	3,483	Disposed
Aug. 27, 2024	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (9,715)	—	Aug. 27, 2028	9,715	Acquired
Aug. 24, 2024	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (1,989)	—	Aug. 24, 2024	1,989	Disposed
Aug. 30, 2023	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (2,577)	—	Aug. 30, 2026	2,577	Disposed
Aug. 30, 2023	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (2,162)	—	Aug. 30, 2025	2,162	Disposed
Aug. 29, 2023	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (13,930)	—	Aug. 29, 2027	13,930	Acquired
Aug. 24, 2023	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (1,989)	—	Aug. 24, 2024	1,989	Disposed
Aug. 30, 2022	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (10,307)	—	Aug. 30, 2026	10,307	Acquired
Aug. 30, 2022	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (2,163)	—	Aug. 30, 2025	2,163	Disposed
Aug. 24, 2022	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (1,990)	—	Aug. 24, 2024	1,990	Disposed
Aug. 30, 2021	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (8,649)	—	Aug. 30, 2025	8,649	Acquired
Aug. 24, 2021	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK [F1] (1,990)	—	Aug. 24, 2024	1,990	Disposed
May 14, 2021	MTRX	INCENTIVE STOCK OPTION (RIGHT TO BUY) [F1]	COMMON STOCK [F1] (2,000)	$10.19	Nov. 17, 2021	2,000	Disposed
Aug. 24, 2020	MTRX	RESTRICTED STOCK UNITS	COMMON STOCK (7,958)	—	Aug. 24, 2024	7,958	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Aug. 24, 2016	MTRX	COMMON STOCK [F1]	10,206	Direct
Aug. 24, 2016	MTRX	INCENTIVE STOCK OPTION (RIGHT TO BUY) [F1]→ COMMON STOCK [F1] (2,000)	2,000	Direct