Form 4: MIAX EVP Boosts Common Stock Holdings Post-IPO

John Smollen, EVP at Miami International Holdings, Inc., converted preferred and nonvoting stock and exercised a substantial number of options into common stock.

Summary

• John Smollen, EVP Traded Products & Relation at Miami International Holdings, Inc. (MIAX), reported equity transactions effective August 15, 2025, under a Rule 10b5-1 plan.
• He converted 65,947 shares of Nonvoting Common Stock into Common Stock, contributing to a direct beneficial ownership of 68,173 Common Stock shares following the reported transactions.
• An additional 91,666 shares of Series B Preferred Stock were converted into Common Stock, held indirectly through Quivetneck Capital LLC, where Mr. Smollen is a managing member. This resulted in an indirect beneficial ownership of 91,666 Common Stock shares following the reported transactions.
• Mr. Smollen also exercised a total of 487,500 stock options (both Incentive Stock Options and Nonqualified Stock Options), converting them into Common Stock.
• These options had strike prices ranging from $12.00 to $25.78 per share and were fully vested.
• These conversions and option exercises occurred upon the closing of the Company's Initial Public Offering (IPO).

Sentiment

Score: 8

Explanation: The filing indicates a significant increase in executive ownership through option exercises and conversions post-IPO, which is generally a strong positive signal of insider confidence and alignment with shareholder interests. The transactions are part of a planned process (10b5-1 box checked) and reflect the realization of long-term incentives.

Positives

• A key executive significantly increased their direct and indirect common stock holdings, indicating strong confidence in the company's future prospects.
• The exercise of a large number of options suggests the executive is realizing value from their compensation, potentially aligning their interests further with shareholders.
• The conversions of preferred and nonvoting stock into common stock simplify the capital structure and increase the float of common shares.

Risks

• The filing itself does not detail specific risks, but the exercise of options could lead to future selling pressure if the executive decides to liquidate some of their holdings.

Future Outlook

The filing indicates that the conversions and option exercises occurred upon the closing of the Company's Initial Public Offering (IPO), suggesting a transition in the company's capital structure and executive equity incentives post-IPO.

Management Comments

• The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions.
• The options are fully vested.

Industry Context

This filing reflects a standard process for executives to convert pre-IPO equity instruments (such as preferred stock, nonvoting common stock, and options) into publicly tradable common stock following an Initial Public Offering. This is a common event in the lifecycle of a newly public company, allowing executives to realize value from their long-term incentives and align their holdings with the public share class.

Comparison to Industry Standards

• The conversion of various share classes (Nonvoting Common Stock, Series B Preferred Stock) into Common Stock upon IPO is a standard practice to simplify capital structure and facilitate public trading, comparable to actions taken by companies like Coinbase (COIN) or Palantir (PLTR) during their direct listings or IPOs where complex share structures were streamlined.
• The exercise of a large volume of vested stock options by an executive is typical post-IPO, allowing them to convert illiquid options into liquid common stock. This is consistent with executive compensation structures seen across the financial services sector, where equity incentives are a significant component of total compensation. For example, executives at companies like Nasdaq (NDAQ) or Cboe Global Markets (CBOE) would similarly exercise options as part of their compensation realization strategy.

Corporate Governance

Related Party Transactions

• Indirect ownership of 91,666 Common Stock shares is held by Quivetneck Capital LLC, of which Mr. Smollen is a managing member. This represents a related party holding.

Stakeholder Impact

• Shareholders: Increased alignment of executive interests with shareholders due to higher common stock ownership. Potential for increased liquidity of common shares due to conversions.
• Employees: No direct impact mentioned, but executive equity realization can be a positive signal for employee morale regarding the value of their own equity incentives.

Key Dates

Recommendation

The significant increase in a key executive's direct and indirect common stock holdings through option exercises and conversions, particularly post-IPO, signals strong insider confidence in the company's long-term prospects. This action aligns the executive's financial interests directly with those of public shareholders, suggesting a belief in future share price appreciation. The transactions are part of a planned process, indicating strategic financial management by the executive. This insider buying activity, especially from a high-ranking officer, is a powerful positive indicator for investors.

Keywords

Miami International Holdings, MIAX, John Smollen, SEC Form 4, Insider Transaction, Stock Option Exercise, Common Stock, Preferred Stock Conversion, Nonvoting Common Stock, Executive Compensation, IPO, Quivetneck Capital LLC