MIAX EVP Barbara Comly Exercises Options, Sells 29,667 Shares

What Happened Barbara J. Comly, EVP, General Counsel & Corporate Secretary of Miami International Holdings, exercised 29,667 fully vested stock options at $12.00 per share (cost $356,004) and sold the same 29,667 shares in the open market on April 15, 2026 for a weighted average price of $43.64, generating approximately $1,294,668 in proceeds. The filing shows the option-to-stock conversion and the subsequent sale on the same day.

Key Details

• Transaction date: April 15, 2026; Form 4 filed April 17, 2026 (appears timely).
• Exercise: 29,667 shares at $12.00 each; total exercise cost $356,004.
• Sale: 29,667 shares sold at a weighted average price of $43.64; total proceeds ~$1,294,668.
• Sale price range (per footnote): $42.68–$44.37; weighted average reported per F2.
• Footnotes: F1 — transaction executed under a Rule 10b5-1 plan established Dec 18, 2025; F3 — options were fully vested.
• Filing does not report the reporter’s shares owned after the transactions in the provided excerpt.

Context Because the options were exercised and the same number of shares were sold the same day, this functions like a cashless exercise (exercise followed by immediate sale). The use of a pre-established 10b5-1 plan indicates the trades followed a pre-set schedule, which is common and can limit inferences about the insider’s short-term view of the company.