---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-071300"
form_type: "8-K"
ticker: "EURK"
cik: "0002000410"
company_name: "Eureka Acquisition Corp"
filed_at: "2025-08-04T23:59:59+00:00"
generated_at: "2026-05-17T21:37:41.463108+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Eureka Acquisition Corp extends deadline to Sep 3, 2025 with $150K sponsor deposit

## Summary
- Sponsor Hercules Capital Management deposited $150,000 into trust to extend business combination deadline by one month to September 3, 2025.
- Company issued unsecured promissory note for $150,000 to sponsor; no interest, payable upon business combination or term expiry.
- Sponsor can convert note into private units at $10.00/unit, each unit consisting of one Class A share and one right to acquire one-fifth share.
- Extension avoids immediate liquidation; note repaid only from non-trust funds if no business combination is completed.

## SEC filing metadata
- accession: 0001213900-25-071300
- form_type: 8-K
- ticker: EURK
- cik: 0002000410
- company_name: Eureka Acquisition Corp
- filed_at: 2025-08-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2000410/000121390025071300/0001213900-25-071300-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2000410/000121390025071300/ea0251491-8k_eureka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-071300
- JSON: https://secwatch.observer/filing/0001213900-25-071300.json
- Plain text: https://secwatch.observer/filing/0001213900-25-071300.txt

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