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SEC EDGARSEP 41 min read$MIAX

Comly Barbara J. sold $1.8M of MIAX

Comly Barbara J. (EVP, GC & Corporate Secretary) sold 44,445 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $40.49 ($1.80M total) on 2026-09-02 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Comly Barbara J.
Published Sep 4, 2026, 8:31 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 4, 2026, 8:51 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$MIAX
Bearish
medium confidence
Mentioned
$MIAX
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MIAXBearishMed
01

Why it matters

Insider sale size and role suggest material information for traders

02

Market read

First disclosure of a significant insider sale; may influence short-term price action

03

What to watch

Pre-arranged 10b5-1 plan reduces timing risk

Relevance 5/10Novelty 7/10Timing: post-market 2026-09-02

Background

Form 4 filing reports insider transaction for Miami International Holdings

Company-level read

Ticker impact

$MIAXBearishMedium confidence
Context

Insider EVP sold 44,445 shares for $1.8M via 10b5-1 plan

Expected impact

Potential short-term pressure on MIAX stock

Evidence & confidence

Exec-level insider sale of $1.8M is material and could influence investor perception

Market effects

Sector

May affect perception of the exchange services sector

Regional

Limited to US equity markets

Global

Low

Counterpoint

What could challenge this read

Sale could be routine liquidity management, not a bearish signal

Key entities

  • Officer
    Comly Barbara J.

    EVP, General Counsel & Corporate Secretary of MIAX

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

MIAX insider trading history →

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