Transaction overview
Shelly Brown, who serves as Executive Vice President and Chief Strategy Officer at Miami International Holdings, Inc. (MIAX), completed a sale of 16,434 common shares on April 8, 2026. The proceeds from the sale totaled approximately $691,542, with a weighted average execution price of $42.08 per share. Individual trades in the block were carried out at prices ranging from $42.00 to $42.26.
On the same day, Brown exercised options that allowed her to acquire 16,434 shares at an exercise price of $12.00 per share, representing a total exercise cost of $197,208. After the option exercise and the subsequent sale, Brown directly holds 325,047 shares of Miami International Holdings common stock.
Context around the sale
The disposition was carried out pursuant to a pre-arranged Rule 10b5-1 trading plan that Brown adopted on December 22, 2025. At the time of the sale the stock was trading near $41.35. Over the preceding 12 months the share price had risen about 37%.
InvestingPro analysis cited alongside the transaction indicates the shares are slightly overvalued relative to InvestingPro’s Fair Value assessment. The subscription service is also noted as providing six additional exclusive tips and comprehensive financial metrics for MIAX to its subscribers.
Recent operating and financial developments
Miami International Holdings reported strong operational and financial momentum in recent disclosures. For the fourth quarter of 2025 the company posted earnings per share of $0.52, materially above the expected $0.33. Revenue for the period rose 52% year-over-year to $125 million.
Options trading activity has expanded as well: MIAX reported a 26.6% increase in year-to-date average daily options volume through March 2026 versus the same period in 2025. The MIAX Exchange Group also increased its share of the U.S. equity options market to 17.1% in February 2026, up from 8.1% a year earlier.
Despite the recent quarter's profitability, the company was not profitable over the last twelve months. Analysts, however, are projecting a return to profitability with forecast earnings of $1.68 per share for calendar-year 2026.
Governance and board developments
Miami International Holdings also reported changes and developments at the board level. Director Lee Becker has informed the company he will not stand for reelection at the 2026 Annual Meeting of Shareholders, though he will remain on the board until that meeting. The company additionally announced the death of board member Murray Stahl, who had served on the MIAX board since July 2025 and who was involved with MIAX Futures and the Bermuda Stock Exchange Council.
What this means
The disclosed share sale and option exercise provide a clear record of an insider monetizing equity while simultaneously exercising long-held options at a substantially lower strike. The broader company disclosures show accelerating revenue, rising options volume and growing market share, alongside a recent profitable quarter and an analyst consensus projecting earnings in 2026. At the same time, MIAX was not profitable over the last twelve months and governance changes will alter the board composition going into 2026.