---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-106080"
form_type: "8-K"
ticker: "COLA"
cik: "0002028201"
company_name: "Columbus Acquisition Corp/Cayman Islands"
filed_at: "2026-10-02T11:05:52+00:00"
generated_at: "2026-10-12T14:31:01.783465+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Columbus Acquisition extends SPAC deadline to Oct 22, 2026 with $100,000 in extension notes

## Summary
- Columbus extended its initial business combination deadline from Aug 22, 2026 to Oct 22, 2026 via two $50,000 monthly extension fee deposits.
- Sponsor Hercules Capital Management VII Corp paid $25,000 for each extension; Target WISeSat.Space Corp also paid $25,000 for each extension.
- Company issued unsecured notes: $25,000 to Sponsor on Aug 30, $50,000 to Target on Sep 22, and $25,000 to Sponsor on Sep 30, 2026.
- Sponsor notes convert into units at $10.00; Target note converts at $10.00 per unit or $5.00 per share if BCA is terminated under Section 10.1(e).
- BCA dated Nov 9, 2025 involves WISeSat.Space Corp, Pubco, Merger Sub, and WISeKey International Holding Ltd.; CEO Fen Zhang signed the filing.

## SEC filing metadata
- accession: 0001213900-26-106080
- form_type: 8-K
- ticker: COLA
- cik: 0002028201
- company_name: Columbus Acquisition Corp/Cayman Islands
- filed_at: 2026-10-02T11:05:52+00:00
- event_type: debt
- 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/2028201/000121390026106080/0001213900-26-106080-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2028201/000121390026106080/ea0307412-8k425_columbus.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-106080
- JSON: https://secwatch.observer/filing/0001213900-26-106080.json
- Plain text: https://secwatch.observer/filing/0001213900-26-106080.txt

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