Deitzel Edward 4

4 · MIAMI INTERNATIONAL HOLDINGS, INC. · Filed Jul 7, 2026

AI-generated summary of this filing

Updated Jul 7, 2026

MIAX EVP Edward Deitzel Exercises Options, Sells 11,000 Shares

What Happened

Edward Deitzel, EVP / CRO / CCO of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), exercised 11,000 vested stock options and immediately sold 11,000 shares on July 6, 2026.
He acquired 7,333 shares for $12.00 each ($87,996) and 3,667 shares for $12.00 each ($44,004) — total exercise cost $132,000 — then sold 11,000 shares in the open market for a weighted-average price of $42.04, generating proceeds of $462,440.

Key Details

Transaction date: 2026-07-06; Form 4 filed 2026-07-07 (timely).
Exercise details: two option exercises (7,333 and 3,667 shares) at $12.00 per share (options fully vested — F3).
Sale details: 11,000 shares sold in multiple trades at prices ranging $42.00–$42.17; weighted average $42.04; total proceeds $462,440 (F2).
Plan disclosure: sale was effected pursuant to a previously established Rule 10b5-1 trading plan adopted 12/30/2025 (F1).
Shares owned after the transactions: not specified in the provided filing.

Context

This is a common “exercise-and-sell” event: vested options were exercised (conversion of derivative securities), and the resulting shares were sold the same day under a pre-established 10b5-1 plan. That structure is typically used to monetize option value while complying with insider-trading rules; the filing does not indicate insider intent or future views on the stock.

Form 4

Period: 2026-07-06

EVP, CRO, CCO MIAX Exchanges

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-07-06$12.00/sh+7,333$87,996→ 126,934 total
Exercise/Conversion
Common Stock
[F1]
2026-07-06$12.00/sh+3,667$44,004→ 130,601 total
Sale
Common Stock
[F1][F2]
2026-07-06$42.04/sh−11,000$462,440→ 119,601 total
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
[F1][F3]
2026-07-06−7,333→ 0 total
Exercise: $12.00Exp: 2028-05-17→ Common Stock (7,333 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
[F1][F3]
2026-07-06−3,667→ 88,000 total
Exercise: $12.00Exp: 2029-07-31→ Common Stock (3,667 underlying)

Footnotes (3)

[F1]This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 30, 2025.
[F2]This transaction was executed in multiple trades throughout the day at prices ranging from $42.00 to $42.17. The price reported above reflects the weighted average sales price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
[F3]The options are fully vested.

Signature

/s/Alessandra Maria Corona Henriques, Attorney-in-Fact|2026-07-07

1 file