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SEC EDGARSEP 41 min read$MIAX

Schafer Douglas M. JR sold $1.9M of MIAX

Schafer Douglas M. JR (EVP and CIO) sold 48,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $40.48 ($1.94M total) on 2026-09-02 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Schafer Douglas M. JR
Published Sep 4, 2026, 8:25 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 4, 2026, 8:43 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
Neutral
medium confidence
Mentioned
$MIAX
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MIAXNeutralLow
01

Why it matters

The disclosed sale is modest and pre‑arranged, suggesting limited immediate impact.

02

Market read

Routine insider sale with minimal trading relevance.

03

What to watch

Potential upcoming corporate actions or market conditions not disclosed.

Relevance 5/10Novelty 4/10Timing: filed Sep 4 2026

Background

Form 4 filings provide transparent disclosure of insider transactions.

Company-level read

Ticker impact

$MIAXNeutralMedium confidence
Context

Executive officer sold 48,000 shares for $1.94M via a 10b5-1 plan.

Expected impact

Potential modest short-term downside.

Evidence & confidence

Sale size is modest relative to holdings and market cap; insider used pre-arranged plan.

Market effects

Sector

No significant sector impact; insider sale is company‑specific.

Regional

Limited to US equity market where MIAX trades.

Global

Low global relevance.

Counterpoint

What could challenge this read

Sale could be interpreted as confidence in liquidity rather than lack of faith.

Key entities

  • Officer
    Schafer Douglas M. JR

    EVP and CIO 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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