Eureka Acquisition Corp Extends SPAC Deadline; Issues $8,253 Extension Note

What Happened
Eureka Acquisition Corp (EURK) filed an 8-K reporting that on August 3, 2026 an $8,253.03 payment was deposited into its trust account to extend the company’s deadline to complete an initial business combination by one month, from August 3, 2026 to September 3, 2026. The payment was made by Marine Thinking Inc. under the parties’ business combination agreement dated October 29, 2025. On August 11, 2026 Eureka issued an unsecured, non‑interest bearing promissory note to Marine Thinking for the $8,253.03 (the “Extension Note”), payable on the earlier of the closing of the business combination or the company’s expiry.

Key Details

• Extension fee deposited: $8,253.03 on August 3, 2026, extending the SPAC deadline to September 3, 2026.
• Promissory note: $8,253.03, issued August 11, 2026, unsecured, no interest, payable at closing or company expiry; contains standard default events and acceleration rights.
• Conversion right: Marine Thinking (or assignees) may convert all or part of the note into private Units at $10.00 per Unit (i.e., up to 825.303 Units for $8,253.03), with each Unit consisting of one Class A ordinary share and a right to receive 1/5 of a Class A share upon consummation of the business combination; conversion requires written notice at least two business days before closing.
• Securities status: Units issuable on conversion would be unregistered and subject to transfer restrictions until the company’s business combination; they are entitled to registration rights. The company has filed an S-4 registration statement (File No. 333-295483) in connection with the proposed transaction.

Why It Matters
This filing shows the SPAC obtained a one‑month extension to pursue its announced combination with Marine Thinking, funded by the target rather than public shareholders or the sponsor. The Extension Note creates a small creditor claim that Marine Thinking can convert into private units at closing, which, if converted, would increase the number of shares/units issued in the transaction and could dilute existing holders. Investors should review the S-4/proxy materials when available for full transaction terms, timing, and potential shareholder votes.