Form 4: MIAX CEO Gallagher Reports Tax-Related Stock Transaction

Miami International Holdings CEO Thomas P. Gallagher reported a disposition of 192,220 shares for tax withholding purposes related to restricted stock awards.

Summary

• Thomas P. Gallagher, Chairman & CEO of Miami International Holdings, Inc. (MIAX), reported a transaction on August 26, 2025.
• 192,220 shares of Common Stock were disposed of at a price of $33.9 per share.
• This disposition was not a sale but represented shares surrendered to the company to satisfy tax withholding and remittance obligations related to the net settlement of restricted stock awards.
• Following this transaction, Mr. Gallagher directly owns 587,963 shares of Common Stock.
• An additional 1,848,274 shares are indirectly owned through Gallagher Investments, LLC, where Mr. Gallagher maintains beneficial ownership.
• The direct holdings were corrected to reflect an additional 2,000 shares purchased on August 13, 2025, held jointly with his spouse with right of survival.

Sentiment

Score: 7

Explanation: The transaction is a routine tax-related disposition, not a market sale, which is generally neutral to slightly positive as it indicates the vesting of awards. The correction for an additional purchase is also a positive sign, reflecting continued investment.

Positives

• The disposition of 192,220 shares was for tax withholding purposes, not a market sale, indicating a vesting event of restricted stock awards rather than a divestment of confidence.
• The reporting person's overall beneficial ownership remains substantial, totaling 2,436,237 shares (1,848,274 indirectly and 587,963 directly).
• Direct holdings were corrected to include an additional 2,000 shares purchased on August 13, 2025, reflecting a recent acquisition.

Future Outlook

No forward-looking statements or guidance are provided in this Form 4 filing, which is a transactional report on insider ownership changes.

Management Comments

• Shares have been surrendered to the Company to satisfy tax withholding and remittance obligations in connection with the net settlement of restricted stock awards and do not represent a sale by the reporting person.

Industry Context

This Form 4 filing details a routine insider transaction related to executive compensation, specifically the vesting of restricted stock awards and the associated tax withholding. Such transactions are common across industries for publicly traded companies that utilize equity-based compensation plans.

Related Party Transactions

• Indirect beneficial ownership of 1,848,274 shares through Gallagher Investments, LLC, where Mr. Gallagher maintains dispositive and voting control.
• Direct beneficial ownership includes 2,000 shares purchased on August 13, 2025, held jointly with his spouse with right of survival.

Stakeholder Impact

• Shareholders: Provides transparency on executive stock ownership and compensation events. The transaction itself is neutral as it's tax-related, not a discretionary sale, and does not signal a change in management's confidence.
• Employees: Reflects the vesting of restricted stock awards, a common form of executive compensation, which can be a positive signal regarding the company's performance and retention strategies.

Key Dates

Recommendation

This Form 4 reports a routine tax-related disposition of shares due to restricted stock award vesting, not a discretionary market sale. It also includes a correction for a prior small purchase. Such transactions are generally neutral and do not indicate a change in the company's fundamental outlook or the insider's confidence. Therefore, a 'hold' recommendation is appropriate as this filing alone does not provide new information to warrant a change in investment thesis.

Keywords

Miami International Holdings, MIAX, Thomas P. Gallagher, Insider Transaction, Form 4, Stock Ownership, Restricted Stock, Tax Withholding, CEO, Director