MIAX EVP Barbara Comly Surrenders 43,420 Shares for Taxes

What Happened

• Barbara J. Comly, Executive Vice President, General Counsel & Corporate Secretary of Miami International Holdings, Inc. (MIAX), had 43,420 shares withheld/surrendered in connection with the net settlement of restricted stock awards. The reported per-share value was $42.41, for a total of $1,841,442. This transaction represents tax withholding/net settlement—not an open-market sale by the insider.

Key Details

• Transaction date: 2026-08-18
• Report filed: 2026-08-20 (timely; filed two days after the transaction)
• Shares affected: 43,420 shares
• Price/value reported: $42.41 per share; total $1,841,442 (reported as "disposed" for withholding purposes)
• Shares owned after transaction: not specified in this Form 4
• Footnote: F1 — Shares were surrendered to satisfy tax withholding related to net settlement of restricted stock awards and do not represent a sale by the reporting person
• Transaction code: F (tax withholding/net settlement)

Context

• This is a routine corporate tax-withholding action tied to restricted stock awards (a net settlement), where the company retains shares to cover the recipient's tax obligation. It differs from an open-market sale and does not, by itself, indicate a change in the insider’s view of the company.