Form 4 for MTRX MATRIX SERVICE CO
Accepted 2026-09-04 11:04:00 ET · period of report 2026-08-25 · accession 0000866273-26-000061 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-09-04 11:04 | 2026-08-25 | MTRX | MILLER DAVID (JAMES) | VP, GC | A - Grant | $0.00 | +5,432 | 26.0K | +26% | $0 |
| DM | 2026-09-04 11:04 | 2026-08-27+ | MTRX | MILLER DAVID (JAMES) | VP, GC | M - OptEx | — | +6,646 | 24.7K | +37% | — |
| DM | 2026-09-04 11:04 | 2026-08-27+ | MTRX | MILLER DAVID (JAMES) | VP, GC | D - Sale to Iss | $10.87 | -6,646 | 23.7K | -22% | -$72.2K |
| DM | 2026-09-04 11:04 | 2026-08-27+ | MTRX | MILLER DAVID (JAMES) | VP, GC | F - Tax | $10.87 | -2,613 | 23.4K | -10% | -$28.4K |
| D | 2026-09-04 11:04 | 2026-08-25 | MTRX | MILLER DAVID (JAMES) | VP, GC | A - Grant | $0.00 | +5,432 | 5,432 | New | $0 |
| DM | 2026-09-04 11:04 | 2026-08-27+ | MTRX | MILLER DAVID (JAMES) | VP, GC | M - OptEx | $0.00 | -6,646 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-08-25 | A | A | 5,432 | $0.00 | 25,979 | D | — | — | (F1) 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. |
| 2 | Common | Common Stock | 2026-08-27 | M | A | 1,702 | — | 27,681 | D | — | — | (F2) 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. |
| 3 | Common | Common Stock | 2026-08-27 | D | D | 1,702 | $10.91 | 25,979 | D | — | — | |
| 4 | Common | Common Stock | 2026-08-27 | F | D | 669 | $10.91 | 25,310 | D | — | — | (F3) Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units. |
| 5 | Common | Common Stock | 2026-08-27 | M | A | 1,607 | — | 26,917 | D | — | — | (F2) 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. |
| 6 | Common | Common Stock | 2026-08-27 | D | D | 1,607 | $10.91 | 25,310 | D | — | — | |
| 7 | Common | Common Stock | 2026-08-27 | F | D | 632 | $10.91 | 24,678 | D | — | — | (F3) Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units. |
| 8 | Common | Common Stock | 2026-08-29 | M | A | 2,370 | — | 27,048 | D | — | — | (F2) 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. |
| 9 | Common | Common Stock | 2026-08-29 | D | D | 2,370 | $10.83 | 24,678 | D | — | — | |
| 10 | Common | Common Stock | 2026-08-29 | F | D | 932 | $10.83 | 23,746 | D | — | — | (F3) Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units. |
| 11 | Common | Common Stock | 2026-08-30 | M | A | 967 | — | 24,713 | D | — | — | (F2) 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. |
| 12 | Common | Common Stock | 2026-08-30 | D | D | 967 | $10.83 | 23,746 | D | — | — | |
| 13 | Common | Common Stock | 2026-08-30 | F | D | 380 | $10.83 | 23,366 | D | — | — | (F3) Shares disposed to satisfy tax obligation due on vest date for Stock-Settled Restricted Stock Units. |
| 14 | Derivative | Restricted Stock Units | 2026-08-25 | A | A | 5,432 | $0.00 | 5,432 | D | — · 2027-08-25 to 2029-08-25 | 5,432 Common Stock | (F2) 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) 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. |
| 15 | Derivative | Restricted Stock Units | 2026-08-27 | M | D | 1,702 | $0.00 | 3,404 | D | — · 2025-08-27 to 2028-08-27 | 1,702 Common Stock | (F2) 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) For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2025 to August 27, 2028. |
| 16 | Derivative | Restricted Stock Units | 2026-08-27 | M | D | 1,607 | $0.00 | 4,819 | D | — · 2026-08-27 to 2029-08-27 | 1,607 Common Stock | (F2) 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) For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 27, 2026 to August 27, 2029. |
| 17 | Derivative | Restricted Stock Units | 2026-08-29 | M | D | 2,370 | $0.00 | 2,369 | D | — · 2024-08-29 to 2027-08-29 | 2,370 Common Stock | (F2) 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) For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 29, 2024 to August 29, 2027. |
| 18 | Derivative | Restricted Stock Units | 2026-08-30 | M | D | 967 | $0.00 | 0 | D | — · 2023-08-30 to 2026-08-30 | 967 Common Stock | (F2) 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. (F8) For this service-based award of Cash-Settled Restricted Stock Units, 25% will vest each year from August 30, 2023 to August 30, 2026. |