---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-108714"
form_type: "8-K"
ticker: "EURK"
cik: "0002000410"
company_name: "Eureka Acquisition Corp"
filed_at: "2026-10-13T11:30:57+00:00"
generated_at: "2026-10-13T11:35:18.092865+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Eureka Acquisition extends SPAC deadline to Oct 3, 2026; $8,253.03 note issued to Marine Thinking

## Summary
- Marine Thinking Inc. deposited $8,253.03 into Eureka's trust account on Sept 3, 2026, extending the initial business combination deadline one month to Oct 3, 2026.
- Eureka issued an unsecured, non-interest-bearing $8,253.03 promissory note dated Oct 7, 2026 to Marine Thinking, payable at deal closing or trust expiry.
- Marine Thinking may convert the note into private units at $10.00 per unit; each unit is one Class A share plus a right to 1/5 of a Class A share.
- Charter permits further one-month extensions up to July 3, 2027, each requiring another $8,253.03 monthly deposit into the trust account.
- Business combination agreement with Marine Thinking Inc. (Canadian autonomous ship company) and Amalgamation Sub 17358750 Canada Inc. is dated Oct 29, 2025.

## SEC filing metadata
- accession: 0001213900-26-108714
- form_type: 8-K
- ticker: EURK
- cik: 0002000410
- company_name: Eureka Acquisition Corp
- filed_at: 2026-10-13T11:30:57+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2000410/000121390026108714/0001213900-26-108714-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2000410/000121390026108714/ea0307983-8k425_eureka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-108714
- JSON: https://secwatch.observer/filing/0001213900-26-108714.json
- Plain text: https://secwatch.observer/filing/0001213900-26-108714.txt

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