Harish Jayabalan - Sep 9, 2025 Form 4 Insider Report for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

Role
EVP, CISO and CRO
Signature
/s/Alessandra Maria Corona Henriques, Attorney-in-Fact
Stock symbol
MIAX
Transactions as of
Sep 9, 2025
Transactions value $
$226,146
Form type
4
Date filed
9/11/2025, 04:09 PM
Previous filing
Aug 19, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Jayabalan Harish EVP, CISO and CRO C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON /s/Alessandra Maria Corona Henriques, Attorney-in-Fact 2025-09-11 0002080538

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MIAX Common Stock Options Exercise $264K +22K +43.66% $12.00 72.4K Sep 9, 2025 Direct
transaction MIAX Common Stock Options Exercise $36K +3K +4.15% $12.00 75.4K Sep 9, 2025 Direct
transaction MIAX Common Stock Tax liability -$73.9K -1.98K -2.63% $37.30 73.4K Sep 9, 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MIAX Incentive Stock Option (Right to Buy) Options Exercise $0 -22K -100% $0.00 0 Sep 9, 2025 Common Stock 22K $12.00 Direct F2
transaction MIAX Nonqualified Stock Option (Right to Buy) Options Exercise $0 -3K -100% $0.00 0 Sep 9, 2025 Common Stock 3K $12.00 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares that have been surrendered to the Company to satisfy tax withholding and remittance obligations in connection with the net settlement of options exercised and does not represent a sale by the reporting person.
F2 The options are fully vested.