---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-028606"
form_type: "8-K"
ticker: "EURK"
cik: "0002000410"
company_name: "Eureka Acquisition Corp"
filed_at: "2026-03-17T23:59:59+00:00"
generated_at: "2026-05-15T11:03:30.215238+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Eureka Acquisition Corp extends deadline to April 3, 2026 via $150K trust deposit

## Summary
- Deposited $150,000 into trust account to extend business-combination deadline by one month to April 3, 2026.
- Extension funded by Marine Thinking Inc. (target company) via unsecured promissory note dated March 13, 2026.
- Promissory note is non-interest bearing, payable at combination or expiry, convertible into units at $10.00 per unit.
- Business Combination Agreement with Marine Thinking (autonomous ship & fleet solutions) was signed October 29, 2025.

## SEC filing metadata
- accession: 0001213900-26-028606
- form_type: 8-K
- ticker: EURK
- cik: 0002000410
- company_name: Eureka Acquisition Corp
- filed_at: 2026-03-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2000410/000121390026028606/0001213900-26-028606-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2000410/000121390026028606/ea0281939-8k425_eureka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-028606
- JSON: https://secwatch.observer/filing/0001213900-26-028606.json
- Plain text: https://secwatch.observer/filing/0001213900-26-028606.txt

## Source-grounded claims
- claim_id: 1bf480b358248c009a36381de254ff8f573fec97
  claim: Eureka Acquisition Corp incurred loan of $150,000 with Marine Thinking Inc. at bears no interest maturing upon 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.
  evidence_excerpt: The Company issued an unsecured promissory note in the aggregate principal amount of $150,000 (the " Extension Note ") dated March 13, 2026 to Marine Thinking in connection with the payment of the Monthly Extension Fee.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2000410/000121390026028606/0001213900-26-028606-index.htm

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