Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

MATRIX SERVICE CO

MTRX · Nasdaq · CIK 0000866273 · Industrials · Engineering & Construction

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

59 Form 4 transaction lines observed in the same window
7 sales · 52 option, withholding, award, gift or other lines

Last qualifying purchase2025-09-16 · CHANDLER JOHN D · $29.3K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
MILLER DAVID (JAMES)VP & General Counsel
○○○○○○○○○○
SHEETS JUSTIN DSVP, Enterprise Services
○○○○○○○○○○
PAYNE SHAWN PPresident & CEO
○○○○○○○○○○
Cavanah Kevin SVP Finance & CFO
○○○○○○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-09-16 · CHANDLER JOHN D.

Recent Form 4 activity

0Purchases
11Sales
58Other Form 4 lines
21SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER52 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
1,145,674
Previous report
1,150,590
Avg daily volume
528,461
Days to cover
2.2

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-09-16CHANDLER JOHN DPurchase (P)COMMON STOCK2,300USD 12.74USD 29,302SEC filing ↗
2022-02-14DURKIN KEVIN APurchase (P)COMMON STOCK7,800USD 6.36USD 49,608SEC filing ↗
2021-12-23HEWITT JOHN RPurchase (P)COMMON STOCK5,000USD 7.02USD 35,100SEC filing ↗
2021-12-22HEWITT JOHN RPurchase (P)COMMON STOCK10,000USD 6.97USD 69,700SEC filing ↗
2021-12-21CHANDLER JOHN DPurchase (P)COMMON STOCK7,000USD 6.79USD 47,530SEC filing ↗
2021-09-23CHANDLER JOHN DPurchase (P)COMMON STOCK5,000USD 9.92USD 49,600SEC filing ↗
2020-11-11MILLER JAMES HARRYPurchase (P)COMMON STOCK3,000USD 8.98USD 26,940SEC filing ↗

Form 4 evidence

69 transaction lines in the latest 365-day window; 642 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-30MILLER DAVID (JAMES)Option exercise / conversion (M)Common Stock967USD —USD —SEC filing ↗
2026-08-30MILLER DAVID (JAMES)Tax withholding (F)Common Stock380USD 10.83USD 4,115SEC filing ↗
2026-08-30MILLER DAVID (JAMES)D (D)Common Stock967USD 10.83USD 10,473SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-30MILLER DAVID (JAMES)Option exercise / conversion (M)Common Stock967USD —USD —SEC filing ↗
2026-08-30MILLER DAVID (JAMES)Tax withholding (F)Common Stock380USD 10.83USD 4,115SEC filing ↗
2026-08-30MILLER DAVID (JAMES)D (D)Common Stock967USD 10.83USD 10,473SEC filing ↗
2026-08-30SHEETS JUSTIN DOption exercise / conversion (M)Common Stock2,576USD —USD —SEC filing ↗
2026-08-30SHEETS JUSTIN DTax withholding (F)Common Stock962USD 10.83USD 10,418SEC filing ↗
2026-08-30SHEETS JUSTIN DD (D)Common Stock2,576USD 10.83USD 27,898SEC filing ↗
2026-08-30PAYNE SHAWN POption exercise / conversion (M)Common Stock2,817USD —USD —SEC filing ↗
2026-08-30PAYNE SHAWN PTax withholding (F)Common Stock1,108USD 10.83USD 12,000SEC filing ↗
2026-08-30PAYNE SHAWN PD (D)Common Stock2,817USD 10.83USD 30,508SEC filing ↗
2026-08-30Cavanah Kevin SOption exercise / conversion (M)Common Stock4,569USD —USD —SEC filing ↗
2026-08-30Cavanah Kevin STax withholding (F)Common Stock1,576USD 10.83USD 17,068SEC filing ↗
2026-08-30Cavanah Kevin SD (D)Common Stock4,569USD 10.83USD 49,482SEC filing ↗
2026-08-29MILLER DAVID (JAMES)Option exercise / conversion (M)Common Stock2,370USD —USD —SEC filing ↗
2026-08-29MILLER DAVID (JAMES)Tax withholding (F)Common Stock932USD 10.83USD 10,094SEC filing ↗
2026-08-29MILLER DAVID (JAMES)D (D)Common Stock2,370USD 10.83USD 25,667SEC filing ↗
2026-08-29SHEETS JUSTIN DOption exercise / conversion (M)Common Stock3,482USD —USD —SEC filing ↗
2026-08-29SHEETS JUSTIN DTax withholding (F)Common Stock1,300USD 10.83USD 14,079SEC filing ↗
2026-08-29SHEETS JUSTIN DD (D)Common Stock3,482USD 10.83USD 37,710SEC filing ↗
2026-08-29PAYNE SHAWN POption exercise / conversion (M)Common Stock4,077USD —USD —SEC filing ↗
2026-08-29PAYNE SHAWN PTax withholding (F)Common Stock1,604USD 10.83USD 17,371SEC filing ↗
2026-08-29PAYNE SHAWN PD (D)Common Stock4,077USD 10.83USD 44,154SEC filing ↗
2026-08-29Cavanah Kevin SOption exercise / conversion (M)Common Stock6,176USD —USD —SEC filing ↗
2026-08-29Cavanah Kevin STax withholding (F)Common Stock2,130USD 10.83USD 23,068SEC filing ↗
2026-08-29Cavanah Kevin SD (D)Common Stock6,176USD 10.83USD 66,886SEC filing ↗
2026-08-27MILLER DAVID (JAMES)Option exercise / conversion (M)Common Stock3,309USD —USD —SEC filing ↗
2026-08-27MILLER DAVID (JAMES)Tax withholding (F)Common Stock1,301USD 10.91USD 14,194SEC filing ↗
2026-08-27MILLER DAVID (JAMES)D (D)Common Stock3,309USD 10.91USD 36,101SEC filing ↗
2026-08-27SHEETS JUSTIN DOption exercise / conversion (M)Common Stock4,126USD —USD —SEC filing ↗
2026-08-27SHEETS JUSTIN DTax withholding (F)Common Stock1,540USD 10.91USD 16,801SEC filing ↗
2026-08-27SHEETS JUSTIN DD (D)Common Stock4,126USD 10.91USD 45,015SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMTRX
CIK0000866273
SectorIndustrials
IndustryEngineering & Construction Yahoo Finance
SEC SIC1700 Construction - Special Trade Contractors
ExchangeNasdaq

Data coverage

Local Form 4 history642 transaction lines from 2020-08-23 to 2026-08-30
7 P purchase lines · 21 S sale lines · 614 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.