---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-067308"
form_type: "8-K"
ticker: "EURK"
cik: "0002000410"
company_name: "Eureka Acquisition Corp"
filed_at: "2026-06-10T20:00:17+00:00"
generated_at: "2026-06-10T20:01:18.096497+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Eureka Acquisition receives $150k extension loan from Marine Thinking; merger deadline extended to July 3, 2026

## Summary
- Principal amount $150,000 unsecured promissory note issued to Marine Thinking for one-month extension to July 3, 2026.
- Note bears no interest, due at earlier of business combination completion or SPAC expiry.
- Note convertible into private units at $10/unit upon closing of business combination.
- Extension fee deposited on June 2, 2026; originally needed to complete by June 3, 2026.
- Marine Thinking is the target company under the existing business combination agreement.

## SEC filing metadata
- accession: 0001213900-26-067308
- form_type: 8-K
- ticker: EURK
- cik: 0002000410
- company_name: Eureka Acquisition Corp
- filed_at: 2026-06-10T20:00:17+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2000410/000121390026067308/0001213900-26-067308-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2000410/000121390026067308/ea0294302-8k425_eureka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-067308
- JSON: https://secwatch.observer/filing/0001213900-26-067308.json
- Plain text: https://secwatch.observer/filing/0001213900-26-067308.txt

## Key facts
- Debt Financings
  Eureka Acquisition Corp incurred loan of aggregate principal amount of $150,000 with Marine Thinking Inc. at bears no interest maturing the earlier to occur of (i) the consummation of the Company's business combination or (ii) the date of expiry of the term of the Company.
  - Instrument: loan
  - Principal: aggregate principal amount of $150,000
  - Counterparty: Marine Thinking Inc.
  - Rate: bears no interest
  - Maturity: the earlier to occur of (i) the consummation of the Company's business combination or (ii) the date of expiry of the term of the Company
  - Event: incurrence
  source text: The Company issued an unsecured promissory note in the aggregate principal amount of $150,000 (the " Extension Note ") dated June 8, 2026 to Marine Thinking in connection with the payment of the Monthly Extension Fee.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2000410/000121390026067308/0001213900-26-067308-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.