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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 42h ago
HOUSE PTR2h ago
SEC 13F2h ago
ROBINHOOD CHAIN2h ago
SEC FORM 4/Open-market saleVerified dataRule 10b5-1 plan

Offer Or sold SMWB

Chief Executive Officer · SIMILARWEB LTD. · Ordinary Shares

Side
SELL
Value
$254K
Shares
30.4K
Price
$8.35
Executed
Sep 17, 2026
Disclosed
Sep 18, 2026
Disclosure timeline1 days from execution to publication · legal deadline 2 business days
Sep 17 executedSep 18, 2026 disclosed

SMWB · 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
4/ 100 · ROUTINE
Methodology →
  • Transaction type+6 / 20

    Open-market sale

  • Relative size+7 / 25

    $254K reported value · 0.7% of prior position

  • Filing timing0 / 15

    Disclosed 1 business day after execution (deadline: 2)

  • Historical behavior+1 / 15

    Routine: 23 prior trades 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

  • 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 · SMWB

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    0
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$3,348
    400 sh
    		Sep 24, 2026Sep 25, 2026
    traded Sep 24, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$876K
    113.9K sh
    		Sep 24, 2026Sep 25, 2026
    traded Sep 24, 2026
    		+1dSEC FORM 4

    Evidence

    1
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$242K
    28.4K sh
    		Sep 23, 2026Sep 24, 2026
    traded Sep 23, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$289K
    34.5K sh
    		Sep 22, 2026Sep 24, 2026
    traded Sep 22, 2026
    		+2dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$309K
    37.5K sh
    		Sep 18, 2026Sep 22, 2026
    traded Sep 18, 2026
    		+4dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$271K
    32.2K sh
    		Sep 21, 2026Sep 22, 2026
    traded Sep 21, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$384K
    45.7K sh
    		Sep 16, 2026Sep 18, 2026
    traded Sep 16, 2026
    		+2dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$452K
    52.9K sh
    		Sep 14, 2026Sep 16, 2026
    traded Sep 14, 2026
    		+2dSEC FORM 4

    Evidence

    1
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$228K
    26.7K sh
    		Sep 15, 2026Sep 16, 2026
    traded Sep 15, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$452K
    52.9K sh
    		Sep 14, 2026Sep 16, 2026
    traded Sep 14, 2026
    		+2dSEC FORM 4

    Evidence

    1
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$228K
    26.7K sh
    		Sep 15, 2026Sep 16, 2026
    traded Sep 15, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$475K
    59.0K sh
    		Sep 11, 2026Sep 14, 2026
    traded Sep 11, 2026
    		+3dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$477K
    59.2K sh
    		Sep 10, 2026Sep 14, 2026
    traded Sep 10, 2026
    		+4dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$695K
    86.3K sh
    		Sep 9, 2026Sep 10, 2026
    traded Sep 9, 2026
    		+1dSEC FORM 4

    Evidence

    4
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale · 10b5-1 plan
    		SELL$506K
    60.7K sh
    		Sep 8, 2026Sep 10, 2026
    traded Sep 8, 2026
    		+2dSEC FORM 4

    Evidence

    8
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Option exercise
    		M$447K
    164.8K sh
    		Aug 26, 2026Aug 27, 2026
    traded Aug 26, 2026
    		+1dSEC FORM 4

    Evidence

    20
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Open-market sale
    		SELL$354K
    39.3K sh
    		Aug 26, 2026Aug 27, 2026
    traded Aug 26, 2026
    		+1dSEC FORM 4

    Evidence

    5
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Option exercise
    		M$107K
    39.3K sh
    		Aug 26, 2026Aug 27, 2026
    traded Aug 26, 2026
    		+1dSEC FORM 4

    Evidence

    2
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Option exercise
    		M$16K
    39.0K sh
    		Aug 26, 2026Aug 27, 2026
    traded Aug 26, 2026
    		+1dSEC FORM 4

    Evidence

    8
    OO
    Offer OrChief Executive Officer
    SMWBSIMILARWEB LTD.
    Option exercise
    		M$426K
    140.0K sh
    		Aug 26, 2026Aug 27, 2026
    traded Aug 26, 2026
    		+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
    0001976408-26-000856
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Sep 17, 2026
    Published
    Sep 18, 2026
    Ingested by INSIDER
    Nov 5, 02:16 UTC
    Last re-read
    Nov 5, 02:16 UTC

    Extracted facts

    Filer
    Offer Or
    Role
    Chief Executive Officer
    Transaction
    Open-market saleAs filed: “S”
    Asset
    SIMILARWEB LTD.
    Ticker
    SMWB
    Shares
    30.4K
    Price per share
    $8.35
    Value
    $253,718
    Execution date (reported)
    Sep 17, 2026
    Owned after transaction
    4.18M shares
    Rule 10b5-1 plan
    Yes, as checked by the filer
    Days from execution to publication
    1

    Calculation

    Value = shares × reported price per share

    • Shares: 30.4K
    • Price: $8.346

    = $253,718

    What this establishes

    Offer Or filed this Form 4 reporting a open-market sale of SMWB on Sep 17, 2026. It became public on Sep 18, 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 Executive Officer
    Offer Orcik:0001910424
    Issuer
    SIMILARWEB LTD.cik:0001842731

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.