---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-089205"
form_type: "8-K"
ticker: "EURK"
cik: "0002000410"
company_name: "Eureka Acquisition Corp"
filed_at: "2026-08-13T20:57:45+00:00"
generated_at: "2026-08-13T20:59:25.299848+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Eureka Acquisition extends deadline to Sept 3, 2026; issues $8,253 note to Marine Thinking

## Summary
- Extended business combination deadline to September 3, 2026 by depositing $8,253.03 into trust account.
- Issued unsecured promissory note to Marine Thinking Inc. for $8,253.03, non-interest bearing, due upon business combination or expiry.
- Note convertible into private units at $10 per unit, each unit one Class A share and one right to acquire 1/5 share.
- Marine Thinking is the target per BCA dated Oct 29, 2025; extension keeps proposed business combination on track.
- If no business combination, note repaid only from non-trust funds; payee waives claims on trust account.

## SEC filing metadata
- accession: 0001213900-26-089205
- form_type: 8-K
- ticker: EURK
- cik: 0002000410
- company_name: Eureka Acquisition Corp
- filed_at: 2026-08-13T20:57:45+00:00
- event_type: debt
- 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/2000410/000121390026089205/0001213900-26-089205-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2000410/000121390026089205/ea0301982-8k425_eureka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-089205
- JSON: https://secwatch.observer/filing/0001213900-26-089205.json
- Plain text: https://secwatch.observer/filing/0001213900-26-089205.txt

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