PROMISSORY NOTE DATED APRIL 28, 2026, ISSUED TO MARKET TECHNOLOGY ACQUISITION SPONSOR LLC
Market Technology Acquisition Corp
THIS PROMISSORY NOTE (“NOTE”) HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”). THIS NOTE HAS BEEN ACQUIRED FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE THEREOF UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM, SCOPE AND SUBSTANCE TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.
PROMISSORY NOTE
Principal Amount: Up to $300,000
Dated as of April 28, 2026
New York, New York
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