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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 ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 45h ago
HOUSE PTR5h ago
SEC 13F5h ago
ROBINHOOD CHAIN5h ago
SEC FORM 4/Option exerciseVerified dataRule 10b5-1 plan

Archer Timothy reported LRCX

President and CEO · LAM RESEARCH CORP · Common Stock

Side
M
Value
$943K
Shares
31.4K
Price
$30.03
Executed
Oct 23, 2026
Disclosed
Oct 26, 2026
Disclosure timeline3 days from execution to publication · legal deadline 2 business days
Oct 23 executedOct 26, 2026 disclosed

LRCX · 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
5/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Option exercise — administrative, little informational value

  • Relative size+7 / 25

$943K reported value · 2.9% of prior position

  • Filing timing0 / 15

    Disclosed 1 business day after execution (deadline: 2)

  • Historical behavior+8 / 15

    First recorded trade by this actor 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

  • Pre-arranged plan-10

    Executed under a Rule 10b5-1 trading plan

    • 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 · LRCX

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    16
    KK
    Kang Ho KyuDirector
    LRCXLAM RESEARCH CORP
    Tax withholding
    		F$117K
    491 sh
    		Oct 30, 2026Nov 2, 2026
    traded Oct 30, 2026
    		+3dSEC FORM 4

    Evidence

    27
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Purchase
    		BUY$1,001 – $15KOct 15, 2026Oct 29, 2026
    traded Oct 15, 2026
    		+14dHOUSE PTR

    Evidence

    14
    AT
    Archer TimothyPresident and CEO
    LRCXLAM RESEARCH CORP
    Open-market sale · 10b5-1 plan
    		SELL$7.13M
    31.4K sh
    		Oct 23, 2026Oct 26, 2026
    traded Oct 23, 2026
    		+3dSEC FORM 4

    Evidence

    0
    AT
    Archer TimothyPresident and CEO
    LRCXLAM RESEARCH CORP
    Option exercise · 10b5-1 plan
    		M—
    31.4K sh
    		Oct 23, 2026Oct 26, 2026
    traded Oct 23, 2026
    		+3dSEC FORM 4

    Evidence

    14
    Sheldon WhitehouseDSpouse
    LRCXLAM RESEARCH CORP
    sell
    		sell$1,001 – $15KAug 13, 2026Sep 2, 2026
    traded Aug 13, 2026
    		+20dSENATE PTR

    Evidence

    47
    TIGER GLOBAL MANAGEMENT LLC13F filer
    LRCXLAM RESEARCH CORP
    TRIM
    		SELL$319.34M
    736.9K sh
    		Not disclosedAug 14, 2026quarterlySEC 13F

    Evidence

    47
    Bridgewater Associates, LP13F filer
    LRCXLAM RESEARCH CORP
    TRIM
    		SELL$274.30M
    633.0K sh
    		Not disclosedAug 14, 2026quarterlySEC 13F

    Evidence

    26
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Sale
    		SELL$1,001 – $15KJun 5, 2026Jun 12, 2026
    traded Jun 5, 2026
    		+7dHOUSE PTR

    Evidence

    28
    FJ
    Fernandes Neil JSenior Vice President
    LRCXLAM RESEARCH CORP
    Open-market sale · 10b5-1 plan
    		SELL$2.37M
    7,659 sh
    		Jun 1, 2026Jun 2, 2026
    traded Jun 1, 2026
    		+1dSEC FORM 4

    Evidence

    16
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Sale
    		SELL$1,001 – $15KApr 27, 2026May 7, 2026
    traded Apr 27, 2026
    		+10dHOUSE PTR

    Evidence

    16
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Sale
    		SELL$1,001 – $15KApr 27, 2026May 7, 2026
    traded Apr 27, 2026
    		+10dHOUSE PTR

    Evidence

    36
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Purchase
    		BUY$1,001 – $15KMar 12, 2026Mar 20, 2026
    traded Mar 12, 2026
    		+8dHOUSE PTR

    Evidence

    25
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Sale
    		SELL$1,001 – $15KFeb 26, 2026Mar 6, 2026
    traded Feb 26, 2026
    		+8dHOUSE PTR

    Evidence

    25
    David J. TaylorRSelf
    LRCXLAM RESEARCH CORP
    Sale
    		SELL$1,001 – $15KFeb 26, 2026Mar 6, 2026
    traded Feb 26, 2026
    		+8dHOUSE PTR

    Evidence

    38
    Cleo FieldsDSelf
    LRCXLAM RESEARCH CORP
    Purchase
    		BUY$15K – $50KFeb 3, 2026Feb 24, 2026
    traded Feb 3, 2026
    		+21dHOUSE PTR

    Evidence

    17
    FJ
    Fernandes Neil JSenior Vice President
    LRCXLAM RESEARCH CORP
    Option exercise
    		M—
    21.6K sh
    		Feb 3, 2026Feb 5, 2026
    traded Feb 3, 2026
    		+2dSEC FORM 4

    Evidence

    9
    FJ
    Fernandes Neil JSenior Vice President
    LRCXLAM RESEARCH CORP
    Option exercise
    		M—
    14.4K sh
    		Feb 3, 2026Feb 5, 2026
    traded Feb 3, 2026
    		+2dSEC FORM 4

    Evidence

    13
    CC
    Correia ChristinaCVP , Chief Accounting Officer
    LRCXLAM RESEARCH CORP
    Option exercise
    		M—
    9,045 sh
    		Feb 3, 2026Feb 5, 2026
    traded Feb 3, 2026
    		+2dSEC FORM 4

    Evidence

    9
    CC
    Correia ChristinaCVP , Chief Accounting Officer
    LRCXLAM RESEARCH CORP
    Option exercise
    		M—
    6,030 sh
    		Feb 3, 2026Feb 5, 2026
    traded Feb 3, 2026
    		+2dSEC FORM 4

    Evidence

    13
    MJ
    Mehra JyotiDirector
    LRCXLAM RESEARCH CORP
    Grant or award
    		A—
    1,635 sh
    		Nov 7, 2025Nov 10, 2025
    traded Nov 7, 2025
    		+3dSEC 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
    0001343600-26-000015
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Oct 23, 2026
    Published
    Oct 26, 2026
    Ingested by INSIDER
    Nov 5, 02:09 UTC
    Last re-read
    Nov 5, 02:09 UTC

    Extracted facts

    Filer
    Archer Timothy
    Role
    President and CEO
    Transaction
    Option exerciseAs filed: “M”
    Asset
    LAM RESEARCH CORP
    Ticker
    LRCX
    Shares
    31.4K
    Price per share
    $30.03
    Value
    $943,036
    Execution date (reported)
    Oct 23, 2026
    Owned after transaction
    1.11M shares
    Rule 10b5-1 plan
    Yes, as checked by the filer
    Days from execution to publication
    3

    Calculation

    Value = shares × reported price per share

    • Shares: 31.4K
    • Price: $30.033

    = $943,036

    What this establishes

    Archer Timothy filed this Form 4 reporting a option exercise of LRCX on Oct 23, 2026. It became public on Oct 26, 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
    President and CEO
    Archer Timothycik:0001343600
    Issuer
    LAM RESEARCH CORPcik:0000707549

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    • Quarterly report (10-Q)10-QOct 22, 2026
    • Results of operations (earnings)8-KOct 21, 2026
    • Officer or director change8-KAug 27, 2026
    • Annual report (10-K)10-KAug 7, 2026
    • Results of operations (earnings)8-KJul 29, 2026
    • Quarterly report (10-Q)10-QApr 23, 2026
    • Results of operations (earnings)8-KApr 22, 2026
    • Officer or director change8-KFeb 3, 2026
    • Quarterly report (10-Q)10-QJan 29, 2026
    • Results of operations (earnings)8-KJan 28, 2026
    • Officer or director change8-KNov 6, 2025
    • Quarterly report (10-Q)10-QOct 24, 2025
    • Results of operations (earnings)8-KOct 22, 2025