$MIAX

Comly Barbara J. sold $1.2M of MIAX

Comly Barbara J. (EVP, GC & Corporate Secretary) sold 28,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $41.98 ($1.18M total) on 2026-07-13 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Comly Barbara J.
Published Jul 14, 2026, 8:07 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Jul 14, 2026, 8:18 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.
AlphAI market briefInsider activity
Primary signal
$MIAX
Neutral
high 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 newest concrete fact is the reported open-market sale of 28,000 shares by an EVP under a 10b5-1 plan; this typically has limited fundamental impact.

02

Market read

Traders may note the insider sale for sentiment monitoring, but there is no new operational or financial catalyst in the text.

03

What to watch

The article provides only the sale details; it does not indicate whether other insiders are selling, whether there are concurrent purchases, or any changes in company outlook.

Relevance 5/10Novelty 2/10Timing: Filed 2026-07-14 after-hours; reflects sale executed 2026-07-13.

Background

The article is an SEC Form 4 insider transaction disclosure for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).

Company-level read

Ticker impact

$MIAXNeutralHigh confidence
Context

MIAX Form 4 shows EVP, GC and Corporate Secretary Barbara J. Comly sold 28,000 shares at $41.98 on 2026-07-13 under a 10b5-1 plan.

Expected impact

Likely minimal near-term price impact; any effect would be sentiment-driven rather than fundamental.

Evidence & confidence

The filing is an insider transaction (not an earnings, guidance, deal, or regulatory event) and explicitly states a pre-arranged 10b5-1 plan, which typically reduces interpretive value.

Market effects

No sector-level implications; this is company-specific insider trading disclosure.

None indicated.

None indicated.

Counterpoint

Even with a 10b5-1 plan, repeated insider selling can sometimes coincide with broader internal caution, so traders may watch for follow-on filings.

Key entities

  • MIAX

    Miami International Holdings, Inc., the company whose insider transaction was disclosed on Form 4.

  • Barbara J. Comly

    EVP, GC and Corporate Secretary who sold 28,000 shares at $41.9800 under a 10b5-1 plan.

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.

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