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Data sources

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

RH CHAIN…
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 423m ago
HOUSE PTR22m ago
SEC 13F22m ago
ROBINHOOD CHAIN22m ago
SEC FORM 4/Open-market saleVerified data

Collins Spencer sold ARM

Chief Legal Officer · ARM HOLDINGS PLC /UK · Ordinary Shares

Side
SELL
Value
$1.12M
Shares
5,353
Price
$209.52
Executed
May 11, 2026
Disclosed
May 13, 2026
Disclosure timeline2 days from execution to publication · legal deadline 2 business days
May 11 executedMay 13, 2026 disclosed

ARM · 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
44/ 100 · ELEVATED
Methodology →
  • Transaction type+12 / 20

    Open-market sale

  • Relative size+14 / 25

    $1.1M reported value · 10.9% of prior position

  • Filing timing0 / 15

    Disclosed 2 business days after execution (deadline: 2)

  • Historical behavior+8 / 15

    First recorded trade by this actor in this security

  • Frequency & clustering+10 / 15

    2 other actors traded the same direction within 14 days

  • 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 · ARM

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    14
    CJ
    Child JasonChief Financial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale · 10b5-1 plan
    		SELL$3.12M
    10.4K sh
    		Sep 21, 2026Sep 23, 2026
    traded Sep 21, 2026
    		+2dSEC FORM 4

    Evidence

    13
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Grant or award
    		A—
    17.3K sh
    		Sep 14, 2026Sep 16, 2026
    traded Sep 14, 2026
    		+2dSEC FORM 4

    Evidence

    12
    HA
    Haas Rene A.Director, Chief Executive Officer
    ARMARM HOLDINGS PLC /UK
    Grant or award
    		A$6,933
    64 sh
    		Aug 31, 2026Sep 10, 2026
    traded Aug 31, 2026
    		+10dSEC FORM 4

    Evidence

    2
    HA
    Haas Rene A.Director, Chief Executive Officer
    ARMARM HOLDINGS PLC /UK
    Grant or award
    		A—
    425.0K sh
    		Sep 9, 2026Sep 10, 2026
    traded Sep 9, 2026
    		+1dSEC FORM 4

    Evidence

    18
    CJ
    Child JasonChief Financial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale · 10b5-1 plan
    		SELL$2.66M
    10.4K sh
    		Aug 27, 2026Aug 31, 2026
    traded Aug 27, 2026
    		+4dSEC FORM 4

    Evidence

    12
    SJ
    Sine JeffreyDirector
    ARMARM HOLDINGS PLC /UK
    Gift
    		G—
    9,572 sh
    		Aug 7, 2026Aug 11, 2026
    traded Aug 7, 2026
    		+4dSEC FORM 4

    Evidence

    53
    BK
    Bartels Laura KathleenChief Accounting Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$4.44M
    11.3K sh
    		Jun 2, 2026Jun 4, 2026
    traded Jun 2, 2026
    		+2dSEC FORM 4

    Evidence

    45
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.44M
    4,200 sh
    		May 28, 2026Jun 1, 2026
    traded May 28, 2026
    		+4dSEC FORM 4

    Evidence

    42
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$703K
    2,300 sh
    		May 22, 2026May 26, 2026
    traded May 22, 2026
    		+4dSEC FORM 4

    Evidence

    46
    EC
    Eaton Charlotte ClaireChief People Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$808K
    2,805 sh
    		May 21, 2026May 22, 2026
    traded May 21, 2026
    		+1dSEC FORM 4

    Evidence

    45
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.34M
    4,655 sh
    		May 21, 2026May 22, 2026
    traded May 21, 2026
    		+1dSEC FORM 4

    Evidence

    53
    EC
    Eaton Charlotte ClaireChief People Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.46M
    5,000 sh
    		May 21, 2026May 22, 2026
    traded May 21, 2026
    		+1dSEC FORM 4

    Evidence

    49
    EC
    Eaton Charlotte ClaireChief People Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.13M
    4,000 sh
    		May 21, 2026May 21, 2026
    traded May 21, 2026
    		+0dSEC FORM 4

    Evidence

    50
    EC
    Eaton Charlotte ClaireChief People Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$782K
    3,100 sh
    		May 20, 2026May 21, 2026
    traded May 20, 2026
    		+1dSEC FORM 4

    Evidence

    45
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.30M
    5,069 sh
    		May 20, 2026May 21, 2026
    traded May 20, 2026
    		+1dSEC FORM 4

    Evidence

    53
    AW
    Abbey WilliamChief Commercial Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$2.44M
    10.9K sh
    		May 19, 2026May 21, 2026
    traded May 19, 2026
    		+2dSEC FORM 4

    Evidence

    50
    CS
    Collins SpencerChief Legal Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$8.80M
    40.9K sh
    		May 19, 2026May 21, 2026
    traded May 19, 2026
    		+2dSEC FORM 4

    Evidence

    34
    CS
    Collins SpencerChief Legal Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$174K
    836 sh
    		May 11, 2026May 13, 2026
    traded May 11, 2026
    		+2dSEC FORM 4

    Evidence

    52
    CS
    Collins SpencerChief Legal Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$1.04M
    4,866 sh
    		May 11, 2026May 13, 2026
    traded May 11, 2026
    		+2dSEC FORM 4

    Evidence

    48
    CS
    Collins SpencerChief Legal Officer
    ARMARM HOLDINGS PLC /UK
    Open-market sale
    		SELL$2.07M
    9,815 sh
    		May 11, 2026May 13, 2026
    traded May 11, 2026
    		+2dSEC 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
    0001973239-26-000064
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    May 11, 2026
    Published
    May 13, 2026
    Ingested by INSIDER
    Nov 5, 03:59 UTC
    Last re-read
    Nov 5, 03:59 UTC

    Extracted facts

    Filer
    Collins Spencer
    Role
    Chief Legal Officer
    Transaction
    Open-market saleAs filed: “S”
    Asset
    ARM HOLDINGS PLC /UK
    Ticker
    ARM
    Shares
    5,353
    Price per share
    $209.52
    Value
    $1,121,561
    Execution date (reported)
    May 11, 2026
    Owned after transaction
    43.9K shares
    Days from execution to publication
    2

    Calculation

    Value = shares × reported price per share

    • Shares: 5,353
    • Price: $209.52

    = $1,121,561

    What this establishes

    Collins Spencer filed this Form 4 reporting a open-market sale of ARM on May 11, 2026. It became public on May 13, 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 Legal Officer
    Collins Spencercik:0001999165
    Issuer
    ARM HOLDINGS PLC /UKcik:0001973239

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.