Lance Emmons - 16 Dec 2025 Form 4 Insider Report for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

Role
EVP and CFO
Signature
/s/ Barbara J. Comly, Attorney-in-fact
Issuer symbol
MIAX
Transactions as of
16 Dec 2025
Net transactions value
+$499,964
Form type
4
Filing time
17 Dec 2025, 16:22:33 UTC
Previous filing
18 Aug 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Emmons Lance EVP and CFO C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON /s/ Barbara J. Comly, Attorney-in-fact 17 Dec 2025 0002080679

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MIAX Common Stock Options Exercise $299,984 +22,221 +24% $13.50 116,377 16 Dec 2025 Direct
transaction MIAX Common Stock Options Exercise $99,987 +6,195 +5.3% $16.14 122,572 16 Dec 2025 Direct
transaction MIAX Common Stock Options Exercise $99,994 +5,040 +4.1% $19.84 127,612 16 Dec 2025 Direct

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 -22,221 -100% $0.000000 0 16 Dec 2025 Common Stock 22,221 $13.50 Direct F1
transaction MIAX Incentive Stock Option (Right to Buy) Options Exercise $0 -6,195 -100% $0.000000 0 16 Dec 2025 Common Stock 6,195 $16.14 Direct F1
transaction MIAX Incentive Stock Option (Right to Buy) Options Exercise $0 -5,040 -50% $0.000000 5,040 16 Dec 2025 Common Stock 5,040 $19.84 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The options are fully vested.
F2 5,040 of the shares subject to this incentive stock option are vested and the remaining 5,040 will vest on March 29, 2026 subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date.