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 41h ago
HOUSE PTR1h ago
SEC 13F1h ago
ROBINHOOD CHAIN1h ago
SEC FORM 4/Open-market saleVerified dataRule 10b5-1 plan

Chang Stephen Chunping sold AOSL

Director, Chief Executive Officer · ALPHA & OMEGA SEMICONDUCTOR Ltd · Common Share

Side
SELL
Value
$49K
Shares
1,492
Price
$32.9
Executed
Apr 17, 2026
Disclosed
Apr 20, 2026
Disclosure timeline3 days from execution to publication · legal deadline 2 business days
Apr 17 executedApr 20, 2026 disclosed

AOSL · 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
15/ 100 · ROUTINE
Methodology →
  • Transaction type+6 / 20

    Open-market sale

  • Relative size+1 / 25

    $49K reported value · 0.2% 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 & 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

  • 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 · AOSL

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    18
    CC
    Chang Stephen ChunpingDirector, Chief Executive Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Gift
    		G—
    100.9K sh
    		Aug 24, 2026Sep 11, 2026
    traded Aug 24, 2026
    		+18dSEC FORM 4

    Evidence

    22
    CF
    Chang Mike FDirector, 10% Owner
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Gift
    		G—
    100.9K sh
    		Aug 24, 2026Sep 11, 2026
    traded Aug 24, 2026
    		+18dSEC FORM 4

    Evidence

    18
    CC
    Chang Stephen ChunpingDirector, Chief Executive Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Open-market sale · 10b5-1 plan
    		SELL$118K
    3,481 sh
    		Apr 17, 2026Apr 20, 2026
    traded Apr 17, 2026
    		+3dSEC FORM 4

    Evidence

    21
    CC
    Chang Stephen ChunpingDirector, Chief Executive Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Open-market sale · 10b5-1 plan
    		SELL$346K
    9,911 sh
    		Apr 17, 2026Apr 20, 2026
    traded Apr 17, 2026
    		+3dSEC FORM 4

    Evidence

    18
    XB
    Xue BingEVP-WW Sales & Bus Development
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Open-market sale · 10b5-1 plan
    		SELL$57K
    1,832 sh
    		Apr 16, 2026Apr 20, 2026
    traded Apr 16, 2026
    		+4dSEC FORM 4

    Evidence

    21
    LY
    Liang YifanCFO and Corp Secretary
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Open-market sale · 10b5-1 plan
    		SELL$302K
    8,625 sh
    		Apr 17, 2026Apr 20, 2026
    traded Apr 17, 2026
    		+3dSEC FORM 4

    Evidence

    12
    LW
    Li WenjunChief Operating Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Tax withholding
    		F$70K
    3,272 sh
    		Mar 16, 2026Mar 18, 2026
    traded Mar 16, 2026
    		+2dSEC FORM 4

    Evidence

    13
    LW
    Li WenjunChief Operating Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Grant or award
    		A—
    10.0K sh
    		Mar 16, 2026Mar 18, 2026
    traded Mar 16, 2026
    		+2dSEC FORM 4

    Evidence

    9
    LW
    Li WenjunChief Operating Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Tax withholding
    		F$49K
    2,267 sh
    		Mar 16, 2026Mar 18, 2026
    traded Mar 16, 2026
    		+2dSEC FORM 4

    Evidence

    13
    LW
    Li WenjunChief Operating Officer
    AOSLALPHA & OMEGA SEMICONDUCTOR Ltd
    Grant or award
    		A—
    10.0K sh
    		Mar 16, 2026Mar 18, 2026
    traded Mar 16, 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
    0001628280-26-025993
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Apr 17, 2026
    Published
    Apr 20, 2026
    Ingested by INSIDER
    Nov 5, 04:03 UTC
    Last re-read
    Nov 5, 04:03 UTC

    Extracted facts

    Filer
    Chang Stephen Chunping
    Role
    Director, Chief Executive Officer
    Transaction
    Open-market saleAs filed: “S”
    Asset
    ALPHA & OMEGA SEMICONDUCTOR Ltd
    Ticker
    AOSL
    Shares
    1,492
    Price per share
    $32.9
    Value
    $49,087
    Execution date (reported)
    Apr 17, 2026
    Owned after transaction
    649.3K 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: 1,492
    • Price: $32.9

    = $49,087

    What this establishes

    Chang Stephen Chunping filed this Form 4 reporting a open-market sale of AOSL on Apr 17, 2026. It became public on Apr 20, 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
    Director, Chief Executive Officer
    Chang Stephen Chunpingcik:0001722000
    Issuer
    ALPHA & OMEGA SEMICONDUCTOR Ltdcik:0001387467

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.