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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 46h ago
HOUSE PTR6h ago
SEC 13F6h ago
ROBINHOOD CHAIN6h ago
SEC FORM 4/Option exerciseVerified data

Comly Barbara J. reported MIAX

EVP, GC & Corporate Secretary · MIAMI INTERNATIONAL HOLDINGS, INC. · Common Stock

Side
M
Value
$200K
Shares
16.7K
Price
$12
Executed
Mar 9, 2026
Disclosed
Mar 10, 2026
Disclosure timeline1 days from execution to publication · legal deadline 2 business days
Mar 9 executedMar 10, 2026 disclosed

MIAX · 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

    Option exercise — administrative, little informational value

  • Relative size+4 / 25

$200K reported value · 2.0% 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

    • 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 · MIAX

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    5
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$480K
    40.0K sh
    		Nov 3, 2026Nov 5, 2026
    traded Nov 3, 2026
    		+2dSEC FORM 4

    Evidence

    0
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    8,000 sh
    		Nov 4, 2026Nov 5, 2026
    traded Nov 4, 2026
    		+1dSEC FORM 4

    Evidence

    7
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    40.0K sh
    		Nov 3, 2026Nov 5, 2026
    traded Nov 3, 2026
    		+2dSEC FORM 4

    Evidence

    19
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$1.36M
    40.0K sh
    		Nov 3, 2026Nov 5, 2026
    traded Nov 3, 2026
    		+2dSEC FORM 4

    Evidence

    12
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$280K
    8,000 sh
    		Nov 4, 2026Nov 5, 2026
    traded Nov 4, 2026
    		+1dSEC FORM 4

    Evidence

    0
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$96K
    8,000 sh
    		Nov 4, 2026Nov 5, 2026
    traded Nov 4, 2026
    		+1dSEC FORM 4

    Evidence

    0
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$106K
    8,799 sh
    		Nov 4, 2026Nov 4, 2026
    traded Nov 4, 2026
    		+0dSEC FORM 4

    Evidence

    12
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$819K
    23.3K sh
    		Nov 2, 2026Nov 4, 2026
    traded Nov 2, 2026
    		+2dSEC FORM 4

    Evidence

    0
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    23.3K sh
    		Nov 2, 2026Nov 4, 2026
    traded Nov 2, 2026
    		+2dSEC FORM 4

    Evidence

    5
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$567K
    47.2K sh
    		Nov 4, 2026Nov 4, 2026
    traded Nov 4, 2026
    		+0dSEC FORM 4

    Evidence

    7
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    47.2K sh
    		Nov 4, 2026Nov 4, 2026
    traded Nov 4, 2026
    		+0dSEC FORM 4

    Evidence

    1
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$280K
    23.3K sh
    		Nov 2, 2026Nov 4, 2026
    traded Nov 2, 2026
    		+2dSEC FORM 4

    Evidence

    19
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$1.96M
    56.0K sh
    		Nov 4, 2026Nov 4, 2026
    traded Nov 4, 2026
    		+0dSEC FORM 4

    Evidence

    0
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    8,799 sh
    		Nov 4, 2026Nov 4, 2026
    traded Nov 4, 2026
    		+0dSEC FORM 4

    Evidence

    7
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    12.3K sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 2026
    		+4dSEC FORM 4

    Evidence

    12
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$280K
    8,000 sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 2026
    		+4dSEC FORM 4

    Evidence

    0
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M—
    8,000 sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 2026
    		+4dSEC FORM 4

    Evidence

    0
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$148K
    12.3K sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 2026
    		+4dSEC FORM 4

    Evidence

    0
    SM
    Schafer Douglas M. JREVP and CIO
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Option exercise · 10b5-1 plan
    		M$96K
    8,000 sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 2026
    		+4dSEC FORM 4

    Evidence

    12
    CJ
    Comly Barbara J.EVP, GC & Corporate Secretary
    MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
    Open-market sale · 10b5-1 plan
    		SELL$431K
    12.3K sh
    		Oct 22, 2026Oct 26, 2026
    traded Oct 22, 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
    0002080878-26-000002
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Mar 9, 2026
    Published
    Mar 10, 2026
    Ingested by INSIDER
    Nov 5, 04:12 UTC
    Last re-read
    Nov 5, 04:12 UTC

    Extracted facts

    Filer
    Comly Barbara J.
    Role
    EVP, GC & Corporate Secretary
    Transaction
    Option exerciseAs filed: “M”
    Asset
    MIAMI INTERNATIONAL HOLDINGS, INC.
    Ticker
    MIAX
    Shares
    16.7K
    Price per share
    $12
    Value
    $199,992
    Execution date (reported)
    Mar 9, 2026
    Owned after transaction
    845.3K shares
    Days from execution to publication
    1

    Calculation

    Value = shares × reported price per share

    • Shares: 16.7K
    • Price: $12

    = $199,992

    What this establishes

    Comly Barbara J. filed this Form 4 reporting a option exercise of MIAX on Mar 9, 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
    EVP, GC & Corporate Secretary
    Comly Barbara J.cik:0002080878
    Issuer
    MIAMI INTERNATIONAL HOLDINGS, INC.cik:0001438472

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.