Welcome to our dedicated page for Eureka Acquisition SEC filings (Ticker: EURK), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The SEC filings of Eureka Acquisition Corp (NASDAQ: EURK) provide detailed insight into its activities as a blank check company, or SPAC, formed to pursue a merger, share exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. Through Stock Titan, you can review these filings with AI-powered summaries that help explain the structure and implications of each document.
Eureka Acquisition Corp’s registration statement on Form S-1 and related prospectus describe the terms of its initial public offering of units, each consisting of one Class A ordinary share and one right to receive one-fifth of one Class A ordinary share. Its periodic reports, such as the Annual Report on Form 10-K, provide information on governance, risk factors and the status of its search for a business combination.
Current Reports on Form 8-K are especially important for EURK. These filings document material events including the deposit of monthly extension fees into the company’s trust account, the issuance of unsecured promissory notes to its sponsor, and the terms under which those notes may be converted into private units. Other Form 8-K filings summarize the business combination agreement with Marine Thinking Inc., outlining the proposed continuance of Eureka Acquisition Corp to Canada, the planned name change to Marine Thinking Holdings Inc. or another agreed name, and the amalgamation structure under the Canada Business Corporations Act.
On this page, you can also access information on the listing of EURK’s units, Class A ordinary shares and rights on The Nasdaq Stock Market LLC, as disclosed under Section 12(b) of the Exchange Act. Stock Titan’s tools surface key elements of complex filings, such as definitions of SPAC units, rights and share classes, conditions to closing the Marine Thinking transaction, and the mechanics of share conversions and redemptions. This helps investors interpret lengthy 10-Ks, 8-Ks and registration statements more efficiently while tracking the regulatory progress of Eureka Acquisition Corp’s proposed business combination.
Eureka Acquisition Corp: Karpus Management, Inc. reported beneficial ownership of 200,925 shares of common stock, representing 4.16% of the class as of the reporting period. The statement is filed on Schedule 13G/A and is signed by Karpus' Chief Compliance Officer.
Eureka Acquisition Corp issued an unsecured promissory note for $150,000 to Marine Thinking Inc. to reimburse a one-month extension fee, extending the period to consummate its initial business combination from March 3, 2026 to April 3, 2026.
The Extension Note dated March 13, 2026 bears no interest and is payable upon the earlier of consummation of the business combination or the company’s term expiry. Marine Thinking may convert principal into private Units at $10.00 per Unit by giving at least two business days’ written notice prior to closing.
Eureka Acquisition Corp entered into a new financing arrangement to extend the deadline for completing its initial business combination. Marine Thinking Inc. deposited a $150,000 Monthly Extension Fee into Eureka’s trust account, allowing the business combination deadline to move from March 3, 2026 to April 3, 2026.
In return, Eureka issued Marine Thinking an unsecured, interest-free $150,000 Extension Promissory Note dated March 13, 2026. The note is payable upon either completion of the business combination or expiry of Eureka’s term and may be converted, at Marine Thinking’s option, into Eureka private units at $10.00 per unit, each unit consisting of one Class A ordinary share and one right to receive one-fifth of a Class A share.
Eureka Acquisition Corp filed its quarterly report, showing it remains a pre‑revenue SPAC focused on completing a business combination. For the three months ended December 31, 2025, it recorded a net loss of $118,289, driven mainly by $417,642 of general and administrative expenses, partly offset by $299,353 of interest on its trust investments.
The trust account held $32,087,675 tied to 2,930,233 Class A ordinary shares subject to possible redemption, while the company had cash of $32,797 and a working capital deficit of $1,492,915 as of December 31, 2025. Management discloses substantial doubt about its ability to continue as a going concern if no business combination is completed by up to July 3, 2026.
Eureka details its signed business combination agreement with Marine Thinking Inc., including a planned continuance to Canada and subsequent amalgamation, plus related support, voting, registration rights, lock‑up, option and finder’s agreements. Shareholders previously redeemed 2,819,767 Class A shares for approximately $29 million, and the sponsor is funding monthly extension fees through non‑interest‑bearing promissory notes convertible into private units.
Eureka Acquisition Corp extended the deadline to complete its initial business combination from February 3, 2026 to March 3, 2026 by depositing a $150,000 Monthly Extension Fee into its trust account. The fee was paid by its sponsor, Hercules Capital Management Corp.
In return, Eureka issued the sponsor an unsecured $150,000 Extension Promissory Note dated February 4, 2026. The note bears no interest and is due upon the earlier of completing a business combination or the company’s expiry date, and includes standard event-of-default triggers that can accelerate repayment.
The sponsor may choose to convert the principal into private units at $10.00 per unit, with each unit consisting of one Class A ordinary share and a right to receive one-fifth of a Class A ordinary share after a business combination. These units, if issued, are restricted from transfer until the business combination and carry registration rights.
Feis Equities LLC and Lawrence M. Feis filed an amended Schedule 13G reporting beneficial ownership of 285,592 Class A ordinary shares of Eureka Acquisition Corp, representing 8.43% of the class. This percentage is based on 3,388,233 Class A shares outstanding as of December 12, 2025.
The reporting persons state they have sole voting and dispositive power over these shares and no shared power. They also certify the holdings were not acquired to change or influence control of Eureka Acquisition Corp.
Eureka Acquisition Corp entered into two unsecured promissory notes with its sponsor, Hercules Capital Management Corp, to support its business combination process. On January 2, 2026, the sponsor deposited a $150,000 monthly extension fee into the company’s trust account, allowing Eureka to extend its deadline to complete an initial business combination from January 3, 2026 to February 3, 2026. In return, the company issued a zero-interest Extension Note for $150,000, payable at the earlier of a business combination or the company’s expiry, and convertible at the sponsor’s option into private units at $10.00 per unit, each unit consisting of one Class A ordinary share and a right to receive one-fifth of a Class A share.
On January 6, 2026, Eureka also issued a zero-interest Sponsor Note in a principal amount of up to $300,000 for general working capital, with similar maturity and default terms and the same optional conversion into units at $10.00 per unit. Any units issued upon conversion of these notes will be restricted from transfer, with limited exceptions, until the completion of the company’s initial business combination and will have registration rights.
Eureka Acquisition Corp, a Cayman Islands blank check company listed on Nasdaq, reports its first full fiscal year as a public SPAC and details a pending business combination.
In July 2024 it raised $57.5 million by selling 5,750,000 public units at $10.00 each and placing the proceeds in a trust account, alongside 228,000 private units. On June 30, 2025, holders redeemed 2,819,767 Class A shares, and approximately $29 million was released from the trust.
On October 29, 2025, EURK entered a business combination agreement with Marine Thinking Inc., an autonomous ship and fleet solutions company, and a Canadian subsidiary. The structure includes domestication to Canada as “Marine Thinking Holdings Inc.” followed by an amalgamation that will leave the combined operating company as a wholly owned subsidiary.
For the year ended September 30, 2025, EURK reported net income of $1,370,753, driven by $2,230,500 of interest on trust investments and $859,747 of general and administrative expenses. Cash outside the trust was $51,431 with a working capital deficiency of $625,273, and management cites substantial doubt about its ability to continue as a going concern if no business combination is completed by the current deadline.
Eureka Acquisition Corp reported a series of small insider sales of its Class A Ordinary Shares by an affiliated investment vehicle. Wolverine Flagship Fund Trading Limited sold a total of 2,454 shares in multiple open-market transactions between November 4 and December 10 at prices around $10.88–$11.07 per share. After these sales, the fund continued to hold 395,924 Class A Ordinary Shares indirectly. The filing lists Wolverine Asset Management, Wolverine Holdings, Wolverine Trading Partners, and individuals Robert R. Bellick and Christopher L. Gust as reporting persons, each disclaiming beneficial ownership beyond any pecuniary interest.
Eureka Acquisition Corp (EURK): Reporting persons disclosed open‑market sales of Class A Ordinary Shares indirectly held by Wolverine Flagship Fund Trading Limited. Transactions occurred at $10.88 per share on 11/04 (20 shares), 11/05 (18), 11/06 (4), and 11/07/2025 (1,000), totaling 1,042 shares.
Following these trades, indirect beneficial ownership stands at 397,336 Class A Ordinary Shares held through the fund, as reflected after the 11/07/2025 transaction.