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Data sources

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

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
01Overview02Follow the Money03Daily Brief04Live05Congress06Directory07Corporate Insiders08Government Money09Political Influence10Institutions11Washington Network12Follow the Power13Disclosure Clock14AI Investigator15Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources
SEC FORM 427m ago
HOUSE PTR27m ago
SEC 13F27m ago
ROBINHOOD CHAIN27m ago
SEC FORM 4/Tax withholdingVerified data

Slessor Mike reported FORM

Director, CEO · FORMFACTOR INC · Common Stock

Side
F
Value
$112K
Shares
2,025
Price
$55.36
Executed
Nov 5, 2025
Disclosed
Nov 7, 2025
Disclosure timeline2 days from execution to publication · legal deadline 2 business days
Nov 5 executedNov 7, 2025 disclosed

FORM · 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+4 / 25

    $112K reported value · 0.4% 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 & 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 · FORM

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    1
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$151K
    1,200 sh
    		Oct 14, 2026Oct 14, 2026
    traded Oct 14, 2026
    		+0dSEC FORM 4

    Evidence

    4
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$966K
    7,703 sh
    		Oct 14, 2026Oct 14, 2026
    traded Oct 14, 2026
    		+0dSEC FORM 4

    Evidence

    4
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$273K
    2,195 sh
    		Oct 14, 2026Oct 14, 2026
    traded Oct 14, 2026
    		+0dSEC FORM 4

    Evidence

    2
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Option exercise
    		M—
    5,908 sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    15
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Tax withholding
    		F$9.26M
    78.9K sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    8
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Tax withholding
    		F$386K
    3,288 sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    10
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Option exercise
    		M—
    141.8K sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    2
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Grant or award
    		A—
    141.8K sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    2
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Option exercise
    		M—
    141.8K sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    9
    MB
    McKinnis Aric BrendanCFO, SVP Global Finance
    FORMFORMFACTOR INC
    Grant or award
    		A—
    6,924 sh
    		Aug 6, 2026Aug 10, 2026
    traded Aug 6, 2026
    		+4dSEC FORM 4

    Evidence

    2
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Grant or award
    		A—
    27.7K sh
    		Aug 6, 2026Aug 10, 2026
    traded Aug 6, 2026
    		+4dSEC FORM 4

    Evidence

    2
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Option exercise
    		M—
    5,908 sh
    		Aug 7, 2026Aug 10, 2026
    traded Aug 7, 2026
    		+3dSEC FORM 4

    Evidence

    4
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$99K
    767 sh
    		Apr 15, 2026Apr 15, 2026
    traded Apr 15, 2026
    		+0dSEC FORM 4

    Evidence

    4
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$229K
    1,826 sh
    		Apr 15, 2026Apr 15, 2026
    traded Apr 15, 2026
    		+0dSEC FORM 4

    Evidence

    4
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$114K
    900 sh
    		Apr 15, 2026Apr 15, 2026
    traded Apr 15, 2026
    		+0dSEC FORM 4

    Evidence

    7
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$302K
    2,369 sh
    		Apr 15, 2026Apr 15, 2026
    traded Apr 15, 2026
    		+0dSEC FORM 4

    Evidence

    7
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$698K
    5,432 sh
    		Apr 15, 2026Apr 15, 2026
    traded Apr 15, 2026
    		+0dSEC FORM 4

    Evidence

    11
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$472K
    6,112 sh
    		Jan 15, 2026Jan 15, 2026
    traded Jan 15, 2026
    		+0dSEC FORM 4

    Evidence

    11
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Open-market sale · 10b5-1 plan
    		SELL$533K
    6,976 sh
    		Jan 15, 2026Jan 15, 2026
    traded Jan 15, 2026
    		+0dSEC FORM 4

    Evidence

    9
    SM
    Slessor MikeDirector, CEO
    FORMFORMFACTOR INC
    Option exercise
    		M—
    6,031 sh
    		Nov 6, 2025Nov 7, 2025
    traded Nov 6, 2025
    		+1dSEC 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
    0001628280-25-050672
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Nov 5, 2025
    Published
    Nov 7, 2025
    Ingested by INSIDER
    Nov 5, 04:34 UTC
    Last re-read
    Nov 5, 04:34 UTC

    Extracted facts

    Filer
    Slessor Mike
    Role
    Director, CEO
    Transaction
    Tax withholdingAs filed: “F”
    Asset
    FORMFACTOR INC
    Ticker
    FORM
    Shares
    2,025
    Price per share
    $55.36
    Value
    $112,104
    Execution date (reported)
    Nov 5, 2025
    Owned after transaction
    536.4K shares
    Days from execution to publication
    2

    Calculation

    Value = shares × reported price per share

    • Shares: 2,025
    • Price: $55.36

    = $112,104

    What this establishes

    Slessor Mike filed this Form 4 reporting a tax withholding of FORM on Nov 5, 2025. It became public on Nov 7, 2025. 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
    Director, CEO
    Slessor Mikecik:0001590177
    Issuer
    FORMFACTOR INCcik:0001039399

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.