Edward Deitzel, Miami International Holdings' executive vice president, chief revenue officer and chief commercial officer for MIAX Exchanges, executed a sale of 12,335 shares of common stock on April 7 and April 8, 2026, realizing approximately $518,221 in proceeds. The stock traded between $42.00 and $42.02 on those dates - marginally above the share price cited in the filing of $41.35.
In concert with the sales, Deitzel also exercised options to acquire 12,335 shares of Miami International Holdings common stock at an exercise price of $12.00 per share, representing a total outlay of $148,020. The dual transactions - the option exercise and subsequent sale - were carried out under a pre-arranged Rule 10b5-1 trading plan that the company says was adopted on December 30, 2025.
MIAX's stock performance over the trailing year has been positive, delivering a 37% return, although the shares are noted to be down nearly 5% year-to-date. The filings do not indicate any other change to executive roles or compensation tied to these transactions beyond the use of the 10b5-1 plan.
Investors and analysts looking for deeper valuation context and executive transaction detail are pointed to InvestingPro, which the filing remarks provides Fair Value assessments and a Pro Research Report on the $3.91 billion exchange operator.
Recent operating and financial highlights
Miami International Holdings reported a strong fourth quarter for 2025. Adjusted diluted earnings per share came in at $0.52, exceeding the cited forecast of $0.33. Revenue for the quarter totaled $125 million, a year-over-year increase of 52%.
The MIAX Exchange Group - comprising MIAX, MIAX Pearl, MIAX Emerald and MIAX Sapphire - posted notable growth in trading activity. Year-to-date average daily trading volume rose 26.6% to 10.9 million contracts through March 2026. For February 2026 specifically, the group's average daily volume was 10.8 million contracts, a 25.4% gain versus February 2025.
Market share in the U.S. equity options market also expanded: the group captured 17.1% in February 2026, up from 8.1% in the comparable month the prior year.
Boardroom developments
The company announced that director Lee Becker will not stand for reelection at the 2026 Annual Meeting of Shareholders; Becker will remain on the board until the meeting. Separately, Miami International Holdings confirmed the death of board member Murray Stahl. According to the company's statement, Stahl had been with MIAX since 2025 and had served on MIAX Futures since 2013.
Context for investors
The combination of an executive option exercise and near-term sale under a pre-arranged trading plan, robust quarterly results and accelerating volume and market-share metrics paints a mixed but data-rich picture for stakeholders. The filings provide precise transaction details and company-reported operating metrics, but do not attach commentary beyond the factual disclosures.