Miami International Holdings, Inc.

MIAX·NYSE·$49.21Share Price as of 11/2·$5BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2605/08/26 10-KFY 202503/06/26 10-QQ3 ended 09/30/2511/07/25

Disclosures

8-KCurrent report10/29/26 8-KCurrent report08/05/26 8-KCurrent report07/21/26 8-KCurrent report06/22/26 8-KCurrent report06/18/26

Prospectuses and Registrations

S-8Registration of securities for employees03/06/26 424B4Prospectus12/15/25 POS AMPost-effective amendment12/12/25 S-1Registration statement (IPO)12/09/25 424B4Prospectus08/14/25

Proxies

DEF 14ADefinitive proxy04/27/26 DEFA14AAdditional proxy materials04/27/26

Ownership

Form 4Insider transaction10/26/26 Form 4Insider transaction10/26/26 Form 4Insider transaction10/06/26 144Proposed sale of securities10/02/26 Form 4Insider transaction09/29/26

Other

ARSAnnual report to shareholders04/27/26 EFFECTRequest for effectiveness12/11/25 CORRESPCorrespondence with the SEC12/09/25 DRSDRS11/26/25 8-A12B8-A12B08/13/25