---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-083652"
form_type: "8-K/A"
ticker: "COLA"
cik: "0002028201"
company_name: "Columbus Acquisition Corp/Cayman Islands"
filed_at: "2026-07-31T12:57:14+00:00"
generated_at: "2026-07-31T13:00:07.849083+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Columbus Acquisition extends deadline to June 22, 2026; issues $25k convertible notes to sponsor and target

## Summary
- Deposited $50,000 into trust to extend business combination deadline from May 22 to June 22, 2026.
- Sponsor Hercules Capital and target WISeSat.Space each contributed $25,000 of the extension fee.
- Issued $25,000 unsecured convertible promissory note to WISeSat.Space (Target Extension Note) on May 21, 2026.
- Issued $25,000 unsecured convertible promissory note to Sponsor on July 29, 2026 (Sponsor Extension Note).
- Notes bear no interest; convertible into private units at $10/unit or into shares at $5/share under certain conditions.

## SEC filing metadata
- accession: 0001213900-26-083652
- form_type: 8-K/A
- ticker: COLA
- cik: 0002028201
- company_name: Columbus Acquisition Corp/Cayman Islands
- filed_at: 2026-07-31T12:57:14+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2028201/000121390026083652/0001213900-26-083652-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2028201/000121390026083652/ea0297562-8ka1425_columbus.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-083652
- JSON: https://secwatch.observer/filing/0001213900-26-083652.json
- Plain text: https://secwatch.observer/filing/0001213900-26-083652.txt

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