# Columbus Acquisition Corp/Cayman Islands (COLAU) — capital_raise/private_placement [completed]
Source: SEC API (secapi.ai) · situation sit_ff90bbe993177851b19e · retrieved 2026-08-11T16:11:02.841Z

## Overview
Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle seeking to complete an initial business combination with WISeSat.Space Holdings Corp. and WISeKey International Holding Ltd.

Columbus Acquisition Corp issued two unsecured convertible promissory notes totaling $50,000 on July 30, 2026, to extend its business combination deadline by one month from July 22, 2026 to August 22, 2026. The Target Extension Note of $25,000 was issued to WISeSat.Space Corp., and the Sponsor Extension Note of $25,000 was issued to Hercules Capital Management VII Corp (the Sponsor). Both notes bear no interest and are convertible into private units at $10.00 per unit, each consisting of one ordinary share and one right to receive one-seventh of one ordinary share upon consummation of a business combination. The notes are payable upon the earliest of: (i) termination of the Business Combination Agreement (for the Target note only), (ii) consummation of the business combination, or (iii) winding up of the Company.

## Terms
- Counterparty: WISeSat.Space Corp. and Hercules Capital Management VII Corp. · Deal value: $50,000 · Consideration: mixed · Price/share: $10

## Key dates
- Expected close 2026-08-22 · Completed 2026-07-31

## Timeline
- 2026-07-31 · 8-K/A (0001213900-26-083652): 8-K/A - Columbus Acquisition Corp/Cayman Islands — *Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle pursuing a business combination with WISeSat.Space Corp., a British Virgin Islands company, and WISeKey International Holding Ltd., a Swiss company.* Columbus Acquisition Corp extended its business combination deadline by one month from May 22, 2026 to June 22, 2026 by depositing $50,000 into its trust account on May 21, 2026. The extension fee was split equally: $25,000 paid by Sponsor Hercules Capital Management VII Corp and $25,000 paid by Target WISeSat.Space Corp. In connection with these payments, the Company issued two unsecured convertible promissory notes: a $25,000 Target Extension Note (dated May 21, 2026) and a $25,000 Sponsor Extension Note (dated July 29, 2026). Both notes are convertible into private units at $10.00 per unit, each consisting of one ordinary share and one right to receive one-seventh of one ordinary share upon consummation of a business combination. The notes bear no interest and are payable upon the earlier of business combination consummation or company wind-up.
  https://www.sec.gov/Archives/edgar/data/2028201/0001213900-26-083652.txt
- 2026-08-04 · 8-K (0001213900-26-085077): 8-K - Columbus Acquisition Corp/Cayman Islands — *Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle seeking to complete an initial business combination with WISeSat.Space Holdings Corp. and related entities.* Columbus Acquisition Corp issued two unsecured convertible promissory notes on July 29, 2026: a $25,000 note to WISeSat.Space Corp. (the Target) and a $25,000 note to Hercules Capital Management VII Corp. (the Sponsor), each bearing no interest. The notes were issued to fund the monthly extension fee required to extend the Company's deadline to complete its initial business combination from June 22, 2026 to July 22, 2026. Each note is convertible at the payee's option into private units at $10.00 per unit (consisting of one ordinary share and one right to receive one-seventh of one ordinary share upon business combination consummation). The Target Extension Note is payable upon the earliest of: (i) termination of the Business Combination Agreement (other than by the Company), (ii) consummation of the business combination, or (iii) winding up of the Company. The Sponsor Extension Note is payable upon the earlier of: (i) consummation of the business combination, or (ii) winding up of the Company.
  https://www.sec.gov/Archives/edgar/data/2028201/0001213900-26-085077.txt
- 2026-08-04 · 8-K (0001213900-26-085084): 8-K - Columbus Acquisition Corp/Cayman Islands — *Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle seeking to complete an initial business combination with WISeSat.Space Holdings Corp. and WISeKey International Holding Ltd.* Columbus Acquisition Corp issued two unsecured convertible promissory notes totaling $50,000 on July 30, 2026, to extend its business combination deadline by one month from July 22, 2026 to August 22, 2026. The Target Extension Note of $25,000 was issued to WISeSat.Space Corp., and the Sponsor Extension Note of $25,000 was issued to Hercules Capital Management VII Corp (the Sponsor). Both notes bear no interest and are convertible into private units at $10.00 per unit, each consisting of one ordinary share and one right to receive one-seventh of one ordinary share upon consummation of a business combination. The notes are payable upon the earliest of: (i) termination of the Business Combination Agreement (for the Target note only), (ii) consummation of the business combination, or (iii) winding up of the Company.
  https://www.sec.gov/Archives/edgar/data/2028201/0001213900-26-085084.txt

## Citations
- 0001213900-26-083652 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026083652
- 0001213900-26-085077 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026085077
- 0001213900-26-085084 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026085084