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SEC EDGARJUL 71 min read$MIAX

Schafer Douglas M. JR sold $2.0M of MIAX

Schafer Douglas M. JR (EVP and CIO) sold 48,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $41.22 ($1.98M total) on 2026-07-02 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Schafer Douglas M. JR
Published Jul 7, 2026, 8:06 PM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Jul 7, 2026, 8:10 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

Traders may monitor insider activity for sentiment, but this specific disclosure lacks any fundamental catalyst (no earnings, guidance, deal, or regulatory action).

02

Market read

A newly filed insider sale in MIAX can create short-term sentiment noise, but the 10b5-1 framing limits interpretability.

03

What to watch

The filing does not disclose reasons for the sale, and it provides no offsetting insider buys or company performance updates that would strengthen a directional thesis.

Relevance 5/10Novelty 4/10Timing: New Form 4 filed 2026-07-07 for a sale executed 2026-07-02.

Background

The article is a SEC Form 4 insider transaction: Schafer Douglas M. Jr (EVP and CIO) sold 48,000 MIAX shares at $41.2200/share on 2026-07-02 under a 10b5-1 plan.

Company-level read

Ticker impact

$MIAXNeutralMedium confidence
Context

MIAX reports an EVP/CIO open-market sale of 48,000 shares at $41.22 on a 10b5-1 plan, per a new Form 4 filing.

Expected impact

Low likelihood of a sustained price move; any reaction is likely brief and sentiment-driven.

Evidence & confidence

The filing is a routine 10b5-1 open-market sale by an executive, with no accompanying guidance, operational update, or regulatory/legal development in the text.

Market effects

Sector

None stated; the article contains only an insider transaction disclosure.

Regional

None stated.

Global

None stated.

Counterpoint

What could challenge this read

Because the sale is explicitly under a pre-arranged 10b5-1 plan, it may reflect scheduled liquidity rather than bearish expectations.

Key entities

  • issuer
    MIAMI INTERNATIONAL HOLDINGS, INC.

    Subject of the Form 4 insider transaction; executive sale disclosed on SEC EDGAR.

  • insider
    Schafer Douglas M. JR

    EVP and CIO who executed the open-market sale under a 10b5-1 plan.

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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