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SEC EDGARSEP 41 min read$MIAX

Teekell Judson Gray sold $231K of MIAX (indirect holdings)

Teekell Judson Gray sold 5,545 indirectly-held shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $41.58 ($0.23M total) on 2026-09-02 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Teekell Judson Gray
Published Sep 4, 2026, 8:21 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 4, 2026, 8:42 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
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MIAXNeutralLow
01

Why it matters

The disclosed sale is modest and unlikely to move the stock significantly, but it adds to the cumulative insider activity record.

02

Market read

A routine insider sale with limited price impact; useful for tracking insider trends but not a strong trading catalyst.

03

What to watch

The 10b5‑1 plan pre‑arranges sales, reducing the informational value of the transaction.

Relevance 3/10Novelty 4/10Timing: post‑sale filing (reported 2026‑09‑04)

Background

Form 4 filings disclose insider transactions; directors often use pre‑arranged plans to sell shares.

Company-level read

Ticker impact

$MIAXNeutralMedium confidence
Context

Director Teekell Judson Gray sold 5,545 shares of MIAX for $230,561 on 2026-09-02 via a 10b5‑1 plan.

Expected impact

Potential short‑term dip of 0.5‑1% if market reacts to the filing.

Evidence & confidence

The sale amount (~$230k) is small for a mid‑cap issuer; directors often use 10b5‑1 plans, limiting predictive power.

Market effects

Sector

No immediate sector impact; insider activity is isolated to MIAX.

Regional

Limited to U.S. equity market participants tracking insider activity.

Global

Negligible on a global scale.

Counterpoint

What could challenge this read

If the director anticipates near‑term weakness, the sell could foreshadow a short‑term decline.

Key entities

  • Director
    Teekell Judson Gray

    Director of Miami International Holdings who sold shares.

  • Company
    Miami International Holdings, Inc.

    Issuer of the MIAX ticker.

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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