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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 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 419m ago
HOUSE PTR19m ago
SEC 13F19m ago
ROBINHOOD CHAIN18m ago
SEC FORM 4/Grant or awardVerified data

Chen Sean Chihhsiang reported AMBQ

President and COO · Ambiq Micro, Inc. · Common Stock

Side
A
Value
—
Shares
64.2K
Price
—
Executed
Mar 6, 2026
Disclosed
Mar 10, 2026
Disclosure timeline4 days from execution to publication · legal deadline 2 business days
Mar 6 executedMar 10, 2026 disclosed

AMBQ · 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
21/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Grant or award — administrative, little informational value

  • Relative size+13 / 25

No reported dollar value · 114.7% 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 · AMBQ

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    18
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$378K
    7,539 sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    11
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$189K
    3,700 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    8
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$29K
    600 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    8
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$11K
    200 sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    11
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$214K
    4,000 sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    11
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$93K
    1,800 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    8
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$25K
    500 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    0
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M—
    15.0K sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    8
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$25K
    500 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    11
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$105K
    2,000 sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M$57K
    7,000 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    0
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M—
    5,000 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    11
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$143K
    2,800 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    0
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M—
    7,000 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    11
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$62K
    1,200 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    11
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$65K
    1,261 sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    EF
    Esaka FumihideDirector, Chief Executive Officer
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M$41K
    5,000 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    8
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale · 10b5-1 plan
    		SELL$45K
    900 sh
    		Oct 15, 2026Oct 16, 2026
    traded Oct 15, 2026
    		+1dSEC FORM 4

    Evidence

    0
    CC
    Chen Sean ChihhsiangPresident and COO
    AMBQAmbiq Micro, Inc.
    Option exercise · 10b5-1 plan
    		M$122K
    15.0K sh
    		Oct 14, 2026Oct 16, 2026
    traded Oct 14, 2026
    		+2dSEC FORM 4

    Evidence

    24
    HM
    Hanson Scott McLeanDirector, Chief Technology Officer
    AMBQAmbiq Micro, Inc.
    Open-market sale
    		SELL$32K
    452 sh
    		Oct 2, 2026Oct 6, 2026
    traded Oct 2, 2026
    		+4dSEC 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
    0002078559-26-000002
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Mar 6, 2026
    Published
    Mar 10, 2026
    Ingested by INSIDER
    Nov 5, 04:12 UTC
    Last re-read
    Nov 5, 04:12 UTC

    Extracted facts

    Filer
    Chen Sean Chihhsiang
    Role
    President and COO
    Transaction
    Grant or awardAs filed: “A”
    Asset
    Ambiq Micro, Inc.
    Ticker
    AMBQ
    Shares
    64.2K
    Price per share
    $0
    Execution date (reported)
    Mar 6, 2026
    Owned after transaction
    120.3K shares
    Days from execution to publication
    4

    What this establishes

    Chen Sean Chihhsiang filed this Form 4 reporting a grant or award of AMBQ on Mar 6, 2026. It became public on Mar 10, 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 COO
    Chen Sean Chihhsiangcik:0002078559
    Issuer
    Ambiq Micro, Inc.cik:0001500412

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.