INSIDER
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 449m ago
HOUSE PTR49m ago
SEC 13F49m ago
ROBINHOOD CHAIN49m ago
SEC FORM 4/Tax withholdingVerified data

Marquez Elena reported ATEX

Chief Financial Officer · Anterix Inc. · Common Stock

Side
F
Value
$108K
Shares
1,325
Price
$81.75
Executed
Sep 29, 2026
Disclosed
Sep 29, 2026
Disclosure timeline0 days from execution to publication · legal deadline 2 business days
Sep 29 executedSep 29, 2026 disclosed

ATEX · daily

Yahoo Finance chart API
▲Execution▼Disclosure●Material company filing●Other disclosed buy●Other disclosed sellUnofficial public endpoint; daily OHLCV, split-adjusted. Replace with a licensed feed for production.

Insider Score

Experimental signal
12/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Tax withholding — administrative, little informational value

  • Relative size+8 / 25

$108K reported value · 8.5% of prior position

  • Filing timing0 / 15

    Disclosed 0 business days after execution (deadline: 2)

  • Historical behavior+4 / 15

    1 prior trade recorded in this security

  • Frequency & clustering0 / 15

    No clustered activity in the dataset

  • Market events0 / 10

    No material company filing within 60 days after the trade

    • The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.

    Other disclosed activity · ATEX

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    0
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Option exercise · 10b5-1 plan
    		M—
    1,227 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    8
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Open-market sale · 10b5-1 plan
    		SELL$82K
    1,017 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    0
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Option exercise · 10b5-1 plan
    		M$49K
    1,227 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    11
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Open-market sale · 10b5-1 plan
    		SELL$261K
    3,254 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    1
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Open-market sale · 10b5-1 plan
    		SELL$33K
    400 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    1
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Open-market sale · 10b5-1 plan
    		SELL$8,250
    100 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    1
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Open-market sale · 10b5-1 plan
    		SELL$17K
    210 sh
    		Oct 9, 2026Oct 13, 2026
    traded Oct 9, 2026
    		+4dSEC FORM 4

    Evidence

    5
    ME
    Marquez ElenaChief Financial Officer
    ATEXAnterix Inc.
    Tax withholding
    		F$40K
    473 sh
    		Oct 5, 2026Oct 6, 2026
    traded Oct 5, 2026
    		+1dSEC FORM 4

    Evidence

    19
    MH
    Martin HeatherChief Marketing Officer, Chief of Staff
    ATEXAnterix Inc.
    Tax withholding
    		F$296K
    3,465 sh
    		Sep 9, 2026Sep 11, 2026
    traded Sep 9, 2026
    		+2dSEC FORM 4

    Evidence

    35
    MH
    Martin HeatherChief Marketing Officer, Chief of Staff
    ATEXAnterix Inc.
    Open-market sale
    		SELL$679K
    8,064 sh
    		Sep 10, 2026Sep 11, 2026
    traded Sep 10, 2026
    		+1dSEC FORM 4

    Evidence

    36
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Open-market sale
    		SELL$503K
    5,372 sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    9
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Option exercise
    		M—
    40.0K sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    33
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Open-market sale
    		SELL$244K
    2,696 sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    36
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Open-market sale
    		SELL$723K
    7,791 sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    36
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Open-market sale
    		SELL$695K
    7,580 sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    26
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Tax withholding
    		F$1.50M
    16.6K sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    30
    GC
    Guttman-McCabe ChristopherChief Reg & Comm Officer
    ATEXAnterix Inc.
    Option exercise
    		M$1.39M
    40.0K sh
    		Aug 25, 2026Aug 27, 2026
    traded Aug 25, 2026
    		+2dSEC FORM 4

    Evidence

    8
    HW
    Heard WilliamDirector
    ATEXAnterix Inc.
    Gift
    		G—
    5,400 sh
    		Aug 19, 2026Aug 20, 2026
    traded Aug 19, 2026
    		+1dSEC FORM 4

    Evidence

    35
    HW
    Heard WilliamDirector
    ATEXAnterix Inc.
    Open-market sale
    		SELL$4.18M
    46.4K sh
    		Aug 14, 2026Aug 18, 2026
    traded Aug 14, 2026
    		+4dSEC FORM 4

    Evidence

    35
    HW
    Heard WilliamDirector
    ATEXAnterix Inc.
    Gift
    		G—
    1,887 sh
    		Dec 29, 2025Aug 7, 2026
    traded Dec 29, 2025
    		+221dSEC FORM 4

    Evidence

    Evidence

    Verified data

    Read directly from the primary public document; every field below is as reported by the filer.

    Source

    Document
    SEC Form 4
    Publisher
    U.S. Securities and Exchange Commission (EDGAR)
    Document ID
    0002090789-26-000011
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Sep 29, 2026
    Published
    Sep 29, 2026
    Ingested by INSIDER
    Nov 5, 02:14 UTC
    Last re-read
    Nov 5, 02:14 UTC

    Extracted facts

    Filer
    Marquez Elena
    Role
    Chief Financial Officer
    Transaction
    Tax withholdingAs filed: “F”
    Asset
    Anterix Inc.
    Ticker
    ATEX
    Shares
    1,325
    Price per share
    $81.75
    Value
    $108,319
    Execution date (reported)
    Sep 29, 2026
    Owned after transaction
    16.8K shares
    Days from execution to publication
    0

    Calculation

    Value = shares × reported price per share

    • Shares: 1,325
    • Price: $81.75

    = $108,319

    What this establishes

    Marquez Elena filed this Form 4 reporting a tax withholding of ATEX on Sep 29, 2026. It became public on Sep 29, 2026. The filing establishes the reported transaction and the filer's stated role. It does not establish why the trade was made or what the filer knew.

    Extraction

    Method
    Form 4 XML
    Confidence
    1.00
    Chief Financial Officer
    Marquez Elenacik:0002090789
    Issuer
    Anterix Inc.cik:0001304492

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.