Quick Takeaways
- MTRX - MATRIX SERVICE CO has 18 insiders with reported activity on this page.
- Net insider value flow over the last year: -$666,192.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 18 Insiders of MATRIX SERVICE CO
- Symbol
- MTRX on Nasdaq
- Location
- Tulsa, OK
What Changed
- Buy value: $29,313; sell value: $695,505.
- Net share flow: -54,393.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$666,192.
Buys
$29,313
Shares: 2,300
Insiders: 1
Sells
$695,505
Shares: 56,693
Insiders: 3
Net
-$666,192
Shares: -54,393
Insiders: -2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 36,000 | $0 | $450,173 | -$450,173 |
| 3-6 | 0 | 12,443 | $0 | $141,577 | -$141,577 |
| 6-9 | 2,300 | 8,250 | $29,313 | $103,755 | -$74,442 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
MATRIX SERVICE CO executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| John R. Hewitt | President & CEO, Director | $7,495,247 | -$450,173 | -5.7% | Mixed | 08 May 2026 |
| Kevin S. Cavanah | VP Finance & CFO | $3,224,633 | Mixed | 29 Aug 2025 | ||
| Alan R. Updyke | Chief Operating Officer | $1,436,172 | Mixed | 29 Aug 2024 | ||
| Justin D. Sheets | VP, Legal & Ops Services | $1,281,816 | Mixed | 29 Aug 2025 | ||
| Nancy E. Austin | VP, Chief Admin Officer | $1,249,781 | -$47,345 | -3.6% | Mixed | 18 Feb 2026 |
| Shawn P. Payne | President, Eng & Constr | $1,223,101 | -$197,987 | -14% | Mixed | 25 Nov 2025 |
| James H. Miller | Director | $1,204,407 | Mixed | 04 Nov 2025 | ||
| John D. Chandler | Director | $1,125,415 | +$29,313 | +2.7% | Mixed | 04 Nov 2025 |
| Douglas J. Montalbano | President, Matrix NAC | $980,855 | Mixed | 29 Aug 2025 | ||
| Martha Z. Carnes | Director | $931,094 | Mixed | 04 Nov 2025 | ||
| Bradley J. Rinehart | President, Matrix Service | $891,496 | Mixed | 30 Aug 2022 | ||
| Liane K. Hinrichs | Director | $840,906 | Mixed | 04 Nov 2025 | ||
| Kevin A. Durkin | VP Chief Bus Dev/Strat Officer | $817,108 | Mixed | 29 Aug 2024 | ||
| Jim W. Mogg | Director | $731,450 | Mixed | 05 Dec 2022 | ||
| Carlin G. Conner | Director | $722,281 | Mixed | 04 Nov 2025 | ||
| Glyn A. Rodgers | President, Matrix PDM Eng | $594,791 | Mixed | 29 Aug 2024 | ||
| Jose Luis Martin de Bustamante | Director | $544,454 | Mixed | 04 Nov 2025 | ||
| Rick J. Bennett | VP & Chief Information Officer | $438,643 | Mixed | 30 Aug 2022 |
Top shareholders of MATRIX SERVICE CO (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.8%
from 13D/G
|
2,014,217
|
$23,123,210 | — | 31 Mar 2026 | |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
13D/G
|
Company |
5.2%
from 13D/G
|
1,435,000
|
$16,473,800 | — | 31 Mar 2026 | |
| Harvey Partners, LLC |
13D/G
13F
|
Company |
4.4%
|
1,221,762
|
$16,334,958 | $0 | 30 Jun 2025 | |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC |
13D/G
13F
|
Company |
4.9%
|
1,346,563
|
$15,566,268 | $0 | 31 Dec 2024 | |
| Jeffrey L. Gendell |
13F
|
Individual |
4.4%
|
1,231,307
|
$14,135,405 | — | 31 Mar 2026 | |
| Azarias Capital Management, L.P. |
13D/G
13F
|
Company |
4.4%
|
1,215,415
|
$14,050,197 | -$2,544,980 | 31 Dec 2024 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
4.2%
|
1,196,787
|
$13,739,115 | — | 31 Mar 2026 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
3.5%
|
981,639
|
$11,269,216 | — | 31 Mar 2026 | |
| WESTERLY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
3.4%
|
965,000
|
$11,078,200 | — | 31 Mar 2026 | |
| First Eagle Investment Management, LLC |
13F
|
Company |
3%
|
850,809
|
$9,767,287 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.4%
|
685,373
|
$7,870,488 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.4%
|
663,939
|
$7,621,483 | — | 31 Mar 2026 | |
| John R. Hewitt |
3/4/5
|
President & CEO, Director |
—
mixed-class rows
|
592,800
mixed-class rows
|
$7,495,247 | -$450,173 | 08 May 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
2.3%
|
637,691
|
$7,320,693 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
1.9%
|
545,485
|
$6,262,168 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.8%
|
498,941
|
$5,727,842 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
1.7%
|
476,411
|
$5,469,198 | — | 31 Mar 2026 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.7%
|
476,089
|
$5,462,000 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1.7%
|
472,047
|
$5,419,099 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
1.7%
|
466,897
|
$5,359,971 | — | 31 Mar 2026 | |
| CenterBook Partners LP |
13F
|
Company |
1.5%
|
431,425
|
$4,952,759 | — | 31 Mar 2026 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
1.3%
|
363,108
|
$4,168,480 | — | 31 Mar 2026 | |
| Russell Investments Group, Ltd. |
13F
|
Company |
1.3%
|
356,785
|
$4,095,892 | — | 31 Mar 2026 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
1.2%
|
350,987
|
$4,029,331 | — | 31 Mar 2026 | |
| MARSHALL WACE, LLP |
13F
|
Company |
1.1%
|
313,296
|
$3,596,638 | — | 31 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
1.1%
|
313,175
|
$3,595,249 | — | 31 Mar 2026 | |
| Congruence Capital, LLC |
13F
|
Company |
1.1%
|
304,145
|
$3,491,585 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
302,698
|
$3,474,975 | — | 31 Mar 2026 | |
| Kevin S. Cavanah |
3/4/5
|
VP Finance & CFO |
—
mixed-class rows
|
211,682
mixed-class rows
|
$3,224,633 | — | 29 Aug 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.96%
|
272,390
|
$3,127,037 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.97%
|
275,307
|
$3,055,908 | — | 31 Mar 2026 | |
| De Lisle Partners LLP |
13F
|
Company |
0.92%
|
258,790
|
$2,967,027 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.91%
|
255,800
|
$2,936,584 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.85%
|
240,552
|
$2,761,537 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.78%
|
220,576
|
$2,532,212 | — | 31 Mar 2026 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.68%
|
192,525
|
$2,210,000 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.67%
|
188,161
|
$2,160,088 | — | 31 Mar 2026 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.66%
|
185,534
|
$2,130,000 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.64%
|
181,338
|
$2,081,760 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.61%
|
171,592
|
$1,969,876 | — | 31 Mar 2026 | |
| COUNTRY TRUST BANK |
13F
|
Company |
0.58%
|
165,237
|
$1,896,921 | — | 31 Mar 2026 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.55%
|
156,268
|
$1,793,957 | — | 31 Mar 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.51%
|
143,817
|
$1,651,019 | — | 31 Mar 2026 | |
| Alan R. Updyke |
3/4/5
|
Chief Operating Officer |
—
mixed-class rows
|
144,194
mixed-class rows
|
$1,436,172 | — | 29 Aug 2024 | |
| PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. |
13F
|
Company |
0.44%
|
123,392
|
$1,416,540 | — | 31 Mar 2026 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.43%
|
120,951
|
$1,388,517 | — | 31 Mar 2026 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.4%
|
113,740
|
$1,330,758 | — | 31 Mar 2026 | |
| Justin D. Sheets |
3/4/5
|
VP, Legal & Ops Services |
—
mixed-class rows
|
83,904
mixed-class rows
|
$1,281,816 | — | 29 Aug 2025 | |
| Nancy E. Austin |
3/4/5
|
VP, Chief Admin Officer |
—
mixed-class rows
|
108,714
mixed-class rows
|
$1,249,781 | -$47,345 | 18 Feb 2026 | |
| Shawn P. Payne |
3/4/5
|
President, Eng & Constr |
—
mixed-class rows
|
104,996
mixed-class rows
|
$1,223,101 | -$197,987 | 25 Nov 2025 |
Recent Insider Transactions by Companies or Individuals for MATRIX SERVICE CO
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John R. Hewitt | MTRX | Common Stock | Sale | -5.83% | $450,173 | $12.50 | -36,000 | 581,806 | 08 May 2026 | Direct |
| Nancy E. Austin | MTRX | COMMON STOCK | Sale | -3.8% | $47,345 | $11.29 | -4,193 | 106,138 | 18 Feb 2026 | Direct |
| Shawn P. Payne | MTRX | COMMON STOCK | Sale | -4.87% | $59,743 | $11.42 | -5,231 | 102,179 | 25 Nov 2025 | Direct |
| Shawn P. Payne | MTRX | COMMON STOCK | Sale | -2.73% | $34,489 | $11.42 | -3,019 | 107,410 | 20 Nov 2025 | Direct |
| Shawn P. Payne | MTRX | COMMON STOCK | Sale | -6.95% | $103,755 | $12.58 | -8,250 | 110,429 | 11 Nov 2025 | Direct |
| Martha Z. Carnes | MTRX | COMMON STOCK | Award | 12.6% | 7,986 | 71,183 | 04 Nov 2025 | Direct | ||
| Jose Luis Martin de Bustamante | MTRX | COMMON STOCK | Award | 23.7% | 7,986 | 41,624 | 04 Nov 2025 | Direct | ||
| James H. Miller | MTRX | COMMON STOCK | Award | 9.5% | 7,986 | 92,078 | 04 Nov 2025 | Direct | ||
| Carlin G. Conner | MTRX | COMMON STOCK | Award | 16.9% | 7,986 | 55,219 | 04 Nov 2025 | Direct | ||
| Liane K. Hinrichs | MTRX | COMMON STOCK | Award | 14.2% | 7,986 | 64,288 | 04 Nov 2025 | Direct | ||
| John D. Chandler | MTRX | COMMON STOCK | Award | 10.2% | 7,986 | 86,039 | 04 Nov 2025 | Direct | ||
| John D. Chandler | MTRX | COMMON STOCK | Purchase | 3.04% | $29,313 | $12.74 | 2,300 | 78,053 | 16 Sep 2025 | Direct |
| Justin D. Sheets | MTRX | COMMON STOCK | Award | 33.2% | 22,471 | 90,114 | 30 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Tax liability | -13.6% | -10,638 | 67,643 | 30 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Disposed to Issuer | -6.46% | -4,739 | 68,650 | 30 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Options Exercise | 7.08% | 4,739 | 71,657 | 30 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -4,739 | 0 | 30 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Award | 31% | 16,406 | 69,404 | 30 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Tax liability | -13.6% | -8,380 | 52,998 | 30 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Disposed to Issuer | -5.43% | -3,091 | 53,806 | 30 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Options Exercise | 5.88% | 3,091 | 55,687 | 30 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -3,091 | 0 | 30 Aug 2025 | Direct | ||
| Nancy E. Austin | MTRX | COMMON STOCK | Award | 23.2% | 22,471 | 119,117 | 30 Aug 2025 | Direct | ||
| Nancy E. Austin | MTRX | COMMON STOCK | Tax liability | -9.52% | -10,164 | 96,646 | 30 Aug 2025 | Direct | ||
| Nancy E. Austin | MTRX | COMMON STOCK | Disposed to Issuer | -4.64% | -4,739 | 97,395 | 30 Aug 2025 | Direct | ||
| Nancy E. Austin | MTRX | COMMON STOCK | Options Exercise | 4.97% | 4,739 | 100,186 | 30 Aug 2025 | Direct | ||
| Nancy E. Austin | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -4,739 | 0 | 30 Aug 2025 | Direct | ||
| Shawn P. Payne | MTRX | COMMON STOCK | Award | 23.7% | 24,567 | 128,346 | 30 Aug 2025 | Direct | ||
| Shawn P. Payne | MTRX | COMMON STOCK | Tax liability | -9.87% | -11,370 | 103,779 | 30 Aug 2025 | Direct | ||
| Shawn P. Payne | MTRX | COMMON STOCK | Disposed to Issuer | -3.96% | -4,330 | 104,887 | 30 Aug 2025 | Direct | ||
| Shawn P. Payne | MTRX | COMMON STOCK | Options Exercise | 4.19% | 4,330 | 107,704 | 30 Aug 2025 | Direct | ||
| Shawn P. Payne | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -4,330 | 0 | 30 Aug 2025 | Direct | ||
| Kevin S. Cavanah | MTRX | COMMON STOCK | Award | 21.8% | 39,847 | 222,712 | 30 Aug 2025 | Direct | ||
| Kevin S. Cavanah | MTRX | COMMON STOCK | Tax liability | -9.2% | -18,518 | 182,865 | 30 Aug 2025 | Direct | ||
| Kevin S. Cavanah | MTRX | COMMON STOCK | Disposed to Issuer | -4.36% | -8,403 | 184,452 | 30 Aug 2025 | Direct | ||
| Kevin S. Cavanah | MTRX | COMMON STOCK | Options Exercise | 4.64% | 8,403 | 189,618 | 30 Aug 2025 | Direct | ||
| Kevin S. Cavanah | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -8,403 | 0 | 30 Aug 2025 | Direct | ||
| John R. Hewitt | MTRX | COMMON STOCK | Award | 26.8% | 143,805 | 681,224 | 30 Aug 2025 | Direct | ||
| John R. Hewitt | MTRX | COMMON STOCK | Tax liability | -11.8% | -71,858 | 537,419 | 30 Aug 2025 | Direct | ||
| John R. Hewitt | MTRX | COMMON STOCK | Disposed to Issuer | -3.6% | -20,219 | 542,008 | 30 Aug 2025 | Direct | ||
| John R. Hewitt | MTRX | COMMON STOCK | Options Exercise | 3.78% | 20,219 | 555,084 | 30 Aug 2025 | Direct | ||
| John R. Hewitt | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -100% | -20,219 | 0 | 30 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Tax liability | -1.92% | -1,361 | 69,495 | 29 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Disposed to Issuer | -4.69% | -3,483 | 70,856 | 29 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | COMMON STOCK | Options Exercise | 4.92% | 3,483 | 74,339 | 29 Aug 2025 | Direct | ||
| Justin D. Sheets | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -33.3% | -3,483 | 6,964 | 29 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Tax liability | -2.72% | -1,517 | 54,326 | 29 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Disposed to Issuer | -5.94% | -3,529 | 55,843 | 29 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | COMMON STOCK | Options Exercise | 6.32% | 3,529 | 59,372 | 29 Aug 2025 | Direct | ||
| Douglas J. Montalbano | MTRX | RESTRICTED STOCK UNITS | Options Exercise | -33.3% | -3,529 | 7,058 | 29 Aug 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.