Thomas P. Gallagher, Chairman and CEO of MIAMI INTERNATIONAL HOLDINGS, INC. (NASDAQ:MIAX), acquired 70,000 shares of common stock through the exercise of nonqualified stock options and subsequently disposed of all 70,000 shares on July 13, 2026. The sale generated a total value of $2,976,400.
The shares were sold at prices ranging from $42.00 to $43.49, resulting in a weighted average sale price of $42.52 per share. The stock currently trades at $41.27, below Gallagher’s sale price. According to InvestingPro analysis, MIAX appears undervalued at current levels, with the company’s Fair Value suggesting upside potential. The $4.02 billion market cap exchange operator is trading at a high earnings multiple, one of several key insights available in the comprehensive Pro Research Report. These transactions were executed indirectly by Gallagher Investments, LLC, an entity over which Mr. Gallagher maintains beneficial ownership, including dispositive and voting control. Both the acquisition and subsequent sale were conducted pursuant to a Rule 10b5-1 trading plan established by Mr. Gallagher on December 29, 2025.
The exercise of the nonqualified stock options involved 70,000 shares of common stock at an exercise price of $12.00 per share, totaling $840,000 for the acquisition. These options were fully vested and had an expiration date of August 2, 2026.
Following these transactions, Mr. Gallagher, through Gallagher Investments, LLC, indirectly holds 1,723,275 shares of MIAMI INTERNATIONAL HOLDINGS, INC. common stock.
In other recent news, Miami International Holdings, Inc. reported a significant increase in trading activity, with the MIAX Exchange Group experiencing a 26% rise in year-to-date average daily volume, reaching 10.9 million contracts through June 2026. The company also disclosed unregistered stock issuances, having issued 1,881,554 shares of common stock to various investors and consultants between April and June. Shareholders of Miami International Holdings approved all fifteen nominees to the board of directors at the annual meeting, with vote totals ranging from over 50 million to nearly 67 million shares in favor. Additionally, the company has adopted a new Senior Executive Annual Bonus Plan for 2026, focusing on performance metrics for determining awards. This plan will be managed by the Compensation Committee for executive officers and by the CEO for other employees. Furthermore, the Options Clearing Corporation began providing clearing and settlement services for MIAX Futures Exchange, which started listing Bloomberg equity index futures in May. These developments reflect Miami International Holdings’ ongoing strategic initiatives and operational enhancements.
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