MIAMI INTERNATIONAL (MIAX) CFO Lance Emmons Sells 35,000 Shares

What Happened
Lance Emmons, Executive Vice President and Chief Financial Officer of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), sold 35,000 shares on August 17, 2026. The sales were reported at a weighted average price of $42.83 per share for total proceeds of $1,499,050. The Form 4 lists the transaction as a sale (code S), executed in multiple trades throughout the day.

Key Details

• Transaction date: 2026-08-17; filing date: 2026-08-19 (filed two days after the trade). No late filing is indicated.
• Prices: trades ranged from $42.23 to $43.54; reported weighted average = $42.83.
• Shares sold: 35,000; proceeds ≈ $1,499,050.
• Shares owned after transaction: Not specified in the provided summary — see the full Form 4 for holdings.
• Footnotes: (1) Sale was effected pursuant to a previously established Rule 10b5-1 plan adopted Dec 17, 2025. (2) Multiple trades; Reporting Person can provide detailed per-trade quantities/prices upon request.

Context: The sale was made under a pre-arranged 10b5-1 plan, which is a scheduling mechanism that lets insiders sell shares at predetermined times and is commonly used to avoid trading on nonpublic information. Sales under 10b5-1 plans are generally viewed as more routine than ad-hoc sales; purchases typically carry more weight when assessing insider sentiment.