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Each RSU represents a right to receive one share of the Issuer's common stock."}],"balance_after":35921,"source":{"system":"sec-edgar","filing":"0002080762-26-000002","document":"wk-form4_1781730240.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2080762/000208076226000002/wk-form4_1781730240.xml","form_type":"4"}},{"id":1062491,"issuer":{"id":4026,"kind":"organization","name":"MIAMI INTERNATIONAL HOLDINGS, INC.","symbol":"MIAX"},"owners":[{"id":37366,"kind":"person","name":"Al-Bahar Talal Jassim","position":1,"cik":"0002080762","reported_name":"Al-Bahar Talal Jassim","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Nonvoting Common Stock","published_at":"2025-08-19T20:07:29.000Z","date":"2025-08-15","kind":"exercise","planned":false,"acquired":false,"shares":238462,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Arzan AM Limited"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."},{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":238462},"source":{"system":"sec-edgar","filing":"0001628280-25-040794","document":"wk-form4_1755634044.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2080762/000162828025040794/wk-form4_1755634044.xml","form_type":"4"}},{"id":1062490,"issuer":{"id":4026,"kind":"organization","name":"MIAMI INTERNATIONAL HOLDINGS, INC.","symbol":"MIAX"},"owners":[{"id":37366,"kind":"person","name":"Al-Bahar Talal Jassim","position":1,"cik":"0002080762","reported_name":"Al-Bahar Talal Jassim","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-08-19T20:07:29.000Z","date":"2025-08-15","kind":"exercise","planned":false,"acquired":true,"shares":238462,"ownership":{"direct":false,"nature":"By Arzan AM Limited"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Includes 238,462 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes of shares of Common Stock held by Arzan AM Limited (\"Arzan Limited\"), of which Mr. Al-Bahar is a director. Mr. Al-Bahar disclaims beneficial ownership of our securities held by Arzan Limited and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the reported shares for purposes of Section 16 or for any other purpose."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Includes of shares of Common Stock held by Arzan AM Limited (\"Arzan Limited\"), of which Mr. Al-Bahar is a director. Mr. Al-Bahar disclaims beneficial ownership of our securities held by Arzan Limited and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the reported shares for purposes of Section 16 or for any other purpose."}],"balance_after":3617296,"source":{"system":"sec-edgar","filing":"0001628280-25-040794","document":"wk-form4_1755634044.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2080762/000162828025040794/wk-form4_1755634044.xml","form_type":"4"}}]}