Form 8-K Filing by Eureka Acquisition Corp

Eureka Acquisition Corp (the Company) has entered into an agreement for a one-month extension to complete its initial business combination, moving the deadline from April 3, 2026, to May 3, 2026. This extension was facilitated by a $150,000 deposit into the Company's trust account, paid by Marine Thinking Inc. In connection with this payment, the Company issued an unsecured promissory note of $150,000 to Marine Thinking Inc. This note is due upon the consummation of the business combination or the expiry of the Company's term. Marine Thinking Inc. has the option to convert the note into private units of the Company under certain conditions. The issuance of the note is claimed to be exempt from registration under Section 4(a)(2) of the Securities Act of 1933.