Form DEFA14A MIAMI INTERNATIONAL HOLD

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April 27, 2026 7:21 AM EDT
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
(Amendment No. )
Filed by the Registrant ☒
Filed by a party other than the Registrant ☐
Check the appropriate box:
☐
Preliminary Proxy Statement
☐
Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐
Definitive Proxy Statement
☒
Definitive Additional Materials
☐
Soliciting Material under §240.14a-12
Miami International Holdings, Inc.
(Name of Registrant as Specified In Its Charter)
Thomas P. Gallagher
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):
☒
No fee required
☐
Fee paid previously with preliminary materials
☐
Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules
14a-6(i)(1) and 0-11
1
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