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

TREX CO INC

TREX · NYSE · CIK 0001069878 · Basic Materials · Building Products & Equipment

INSIDER SIGNAL

No active buy signal

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

16 Form 4 transaction lines observed in the same window
2 sales · 14 option, withholding, award, gift or other lines

Last qualifying purchase2026-03-03 · ROSE B ANDREW · $488.6K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
ROSE B ANDREWDirector
○○○
Keffer David ChristianDirector
○○○
Rudolph Jacob T.SVP, CHRO
▼
Taylor Brian J.SVP, Chief Commercial Officer
○
Fernandez Amy M.SVP, CLO and Secretary
▼
Volas GeraldDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

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: 2026-03-03 · ROSE B ANDREW.

Recent Form 4 activity

4Purchases
2Sales
39Other Form 4 lines
34SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING2 sale line(s) · context only
OTHER14 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
10,476,377
Previous report
10,148,200
Avg daily volume
1,668,332
Days to cover
6.3

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
2026-03-03ROSE B ANDREWPurchase (P)Common Stock12,008USD 40.69USD 488,614SEC filing ↗
2026-03-02ROSE B ANDREWPurchase (P)Common Stock372USD 40.26USD 14,977SEC filing ↗
2025-11-14Gandhi PrithviPurchase (P)Common Stock15,000USD 31.92USD 478,800SEC filing ↗
2025-10-10Rudolph Jacob T.Purchase (P)Common Stock59USD 43.92USD 2,591SEC filing ↗
2025-07-03Rudolph Jacob T.Purchase (P)Common Stock66USD 46.22USD 3,051SEC filing ↗
2025-04-08Rudolph Jacob T.Purchase (P)Common Stock53USD 49.39USD 2,618SEC filing ↗
2025-01-27Rudolph Jacob T.Purchase (P)Common Stock49USD 57.58USD 2,821SEC filing ↗
2024-10-03Rudolph Jacob T.Purchase (P)Common Stock43USD 56.59USD 2,433SEC filing ↗
2024-07-03Rudolph Jacob T.Purchase (P)Common Stock44USD 63.00USD 2,772SEC filing ↗
2024-04-04Rudolph Jacob T.Purchase (P)Common Stock35USD 70.37USD 2,463SEC filing ↗

Form 4 evidence

45 transaction lines in the latest 365-day window; 485 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01ROSE B ANDREWAward / grant (A)Common Stock589USD 43.50USD 25,622SEC filing ↗
2026-10-01Keffer David ChristianAward / grant (A)Common Stock147USD 43.50USD 6,394SEC filing ↗
2026-08-24Taylor Brian J.Award / grant (A)Common Stock9,520USD 47.27USD 450,010SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01ROSE B ANDREWAward / grant (A)Common Stock589USD 43.50USD 25,622SEC filing ↗
2026-10-01Keffer David ChristianAward / grant (A)Common Stock147USD 43.50USD 6,394SEC filing ↗
2026-08-24Taylor Brian J.Award / grant (A)Common Stock9,520USD 47.27USD 450,010SEC filing ↗
2026-08-07Fernandez Amy M.Sale (S)Common Stock1,050USD 50.07USD 52,574SEC filing ↗
2026-07-29Volas GeraldAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29Tasi IreneAward / grant (A)Common Stock1,101USD 42.39USD 46,671SEC filing ↗
2026-07-29ROSE B ANDREWAward / grant (A)Common Stock1,629USD 42.39USD 69,053SEC filing ↗
2026-07-29ROBINSON PATRICIA BAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29Lovett Gena CAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29Keffer David ChristianAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29JUSTER KRISTINE LAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29GRATZ JAY MAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-29Cline James EAward / grant (A)Common Stock2,831USD 42.39USD 120,006SEC filing ↗
2026-07-01ROSE B ANDREWAward / grant (A)Common Stock526USD 48.69USD 25,611SEC filing ↗
2026-07-01Keffer David ChristianAward / grant (A)Common Stock131USD 48.69USD 6,378SEC filing ↗
2026-06-25Rudolph Jacob T.Sale (S)Common Stock1,400USD 50.00USD 70,000SEC filing ↗
2026-04-01ROSE B ANDREWAward / grant (A)Common Stock700USD 36.57USD 25,599SEC filing ↗
2026-04-01Keffer David ChristianAward / grant (A)Common Stock175USD 36.57USD 6,400SEC filing ↗
2026-03-03ROSE B ANDREWPurchase (P)Common Stock12,008USD 40.69USD 488,614SEC filing ↗
2026-03-02ROSE B ANDREWPurchase (P)Common Stock372USD 40.26USD 14,977SEC filing ↗
2026-03-01Zambanini Adam DanteJ (J)Common Stock1,928USD 41.42USD 79,858SEC filing ↗
2026-03-01Zambanini Adam DanteTax withholding (F)Common Stock8,271USD 41.42USD 342,585SEC filing ↗
2026-03-01Zambanini Adam DanteAward / grant (A)Common Stock3,623USD 41.42USD 150,065SEC filing ↗
2026-03-01Rudolph Jacob T.J (J)Common Stock663USD 41.42USD 27,461SEC filing ↗
2026-03-01Rudolph Jacob T.Tax withholding (F)Common Stock2,850USD 41.42USD 118,047SEC filing ↗
2026-03-01Rudolph Jacob T.Award / grant (A)Common Stock1,250USD 41.42USD 51,775SEC filing ↗
2026-03-01Fernandez Amy M.J (J)Common Stock1,083USD 41.42USD 44,858SEC filing ↗
2026-03-01Fernandez Amy M.Tax withholding (F)Common Stock4,496USD 41.42USD 186,224SEC filing ↗
2026-03-01Fernandez Amy M.Award / grant (A)Common Stock1,910USD 41.42USD 79,112SEC filing ↗
2026-03-01FAIRBANKS BRYAN HORIXJ (J)Common Stock5,678USD 41.42USD 235,183SEC 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 · —
TickerTREX
CIK0001069878
SectorBasic Materials
IndustryBuilding Products & Equipment Yahoo Finance
SEC SIC2400 Lumber & Wood Products (No Furniture)
ExchangeNYSE

Data coverage

Local Form 4 history485 transaction lines from 2020-01-02 to 2026-10-01
11 P purchase lines · 79 S sale lines · 395 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.