Douglas M. Schafer Jr. - 18 Feb 2026 Form 4 Insider Report for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

Role
EVP and CIO
Signature
/s/ Barbara J. Comly, Attorney-in-fact
Issuer symbol
MIAX
Transactions as of
18 Feb 2026
Net transactions value
-$1,331,583
Form type
4
Filing time
20 Feb 2026, 16:33:09 UTC
Previous filing
12 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Schafer Douglas M. JR EVP and CIO C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON /s/ Barbara J. Comly, Attorney-in-fact 20 Feb 2026 0002079445

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MIAX Common Stock Tax liability $1,331,583 -32,565 -7.6% $40.89 396,681 18 Feb 2026 Direct F1
* 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 restricted stock awards and does not represent a sale by the reporting person.