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MIAX's CEO Cashed In Options Struck at $12. Here's What to Know

Thomas Gallagher exercised vested options under a pre-established trading plan, retaining 1.7 million shares and 235,000 derivative securities through an investment LLC.

MIAX's CEO Cashed In Options Struck at $12. Here's What to Know

Published August 11, 2026 · Category: Finance

Overview

Thomas P. Gallagher, chairman and CEO of Miami International Holdings, Inc. (NYSE:MIAX), reported a sale of 48,334 shares on August 4, according to a SEC Form 4 filing.

Transaction value based on SEC Form 4 weighted average sale price ($45.69); post-transaction value based on the August 4 market close ($45.34).

Details

Miami International Holdings is a mid-cap financial services infrastructure provider with a $4.4 billion market capitalization that operates as a critical marketplace operator in U.S. capital markets. The company's diversified platform architecture across options, equities, and futures segments positions it to capture trading volume across multiple asset classes. MIAX maintains competitive advantages through its technology infrastructure, regulatory approvals across multiple asset classes, and established relationships with market participants seeking alternative execution venues.

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Source

Originally published at www.fool.com.

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