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SEC EDGARSEP 41 min read$MIAX

Teekell Judson Gray sold $123K of MIAX

Teekell Judson Gray sold 3,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $40.89 ($0.12M 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
Bearish
medium confidence
Mentioned
$MIAX
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MIAXBearishLow
01

Why it matters

The transaction adds modest selling pressure; traders may watch for further insider activity.

02

Market read

Small insider sale; low immediate trading relevance but useful for monitoring insider trends.

03

What to watch

The director retains a sizable stake (69,251 shares) indicating continued confidence.

Relevance 3/10Novelty 4/10Timing: post‑market filing on 2026-09-04

Background

SEC Form 4 filing discloses an insider sale by a director of MIAX.

Company-level read

Ticker impact

$MIAXBearishMedium confidence
Context

Director Teekell Judson Gray sold 3,000 MIAX shares for $122,670 on 2026-09-02 via a 10b5‑1 plan.

Expected impact

Potential short‑term dip of 1‑2% as the market digests the sale.

Evidence & confidence

Sale size is small relative to total holdings (69,251 shares) but director-level sales are watched by traders.

Market effects

Sector

Minimal impact on the broader exchange‑trading services sector.

Regional

Negligible effect on U.S. markets.

Global

Limited to investors tracking insider activity.

Counterpoint

What could challenge this read

The sale could be a routine liquidity event unrelated to company fundamentals.

Key entities

  • Director
    Teekell Judson Gray

    Director of MIAX who sold shares under a 10b5‑1 plan.

  • Company
    Miami International Holdings, Inc.

    Operator of the MIAX exchange platform.

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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