Thomas P. Gallagher, serving as both Chairman and Chief Executive Officer of Miami International Holdings, Inc. (NASDAQ: MIAX), executed a series of stock transactions totaling approximately $2.95 million in early July 2026. The executive's activity involved both the sale of common stock and the exercise of nonqualified stock options, all conducted under a pre-existing Rule 10b5-1 trading plan. This structured approach to liquidity events underscores a methodical management of personal holdings while the broader company navigates operational shifts and market performance metrics.
The disposal of shares occurred on July 6 and July 7, 2026, with the total transaction value reaching $2,951,381. The sales were executed at prices ranging between $42.00 and $42.50 per share. Specifically, Gallagher sold 41,772 shares on July 6 at a weighted average price of $42.09. The following day, July 7, he sold an additional 28,228 shares at a weighted average price of $42.27. The price range for July 6 transactions spanned from $42.00 to $42.32, while July 7 prices extended up to $42.50. This stock activity coincides with a period of market movement, as MIAX shares have since climbed to $43.72, reflecting a 12.65% gain over the past week. According to InvestingPro analysis, MIAX currently appears overvalued relative to its Fair Value, with the company's market capitalization standing at approximately $3.97 billion.
Preceding these sales, Mr. Gallagher acquired the same number of shares, 70,000, through the exercise of nonqualified stock options at a price of $12.00 per share. These option exercises, totaling $840,000, also occurred on July 6 and July 7, 2026. The options were fully vested at the time of exercise. All reported transactions were effected indirectly through Gallagher Investments, LLC, over which Mr. Gallagher maintains beneficial ownership, including dispositive and voting control. These transactions were carried out pursuant to a Rule 10b5-1 trading plan, which Mr. Gallagher adopted on December 29, 2025.
While executive transactions provide insight into internal capital management, Miami International Holdings has also reported broader operational developments. The company disclosed a significant 26% increase in year-to-date average daily options trading volume across its MIAX Exchange Group, which includes MIAX, MIAX Pearl, MIAX Emerald, and MIAX Sapphire. Additionally, the company disclosed the issuance of 1,881,554 shares of common stock to an accredited investor, a current consultant, and nine former consultants between April 1 and June 17. At the recent annual meeting of stockholders, all fifteen nominees to the board of directors were elected to serve until the 2027 annual meeting, with varying vote totals and some broker non-votes recorded.
Furthermore, Miami International Holdings announced the adoption of a new Senior Executive Annual Bonus Plan, effective for performance periods starting January 1, 2026. This plan will be administered by the Compensation Committee for executive officers, while the CEO will oversee it for other participants. In another development, the Options Clearing Corporation has begun providing clearing and settlement services for the MIAX Futures Exchange, which started listing Bloomberg equity index futures on May 17, 2026. These recent developments reflect the company's ongoing strategic initiatives and operational activities.