# Columbus Acquisition Corp/Cayman Islands (COLAU) — merger/definitive [pending]
Source: SEC API (secapi.ai) · situation sit_75a3fdd33a4d8582054f · retrieved 2026-08-11T16:11:58.232Z

## Overview
Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle engaged in a business combination with WISeSat.Space Corp., a British Virgin Islands company.

Columbus Acquisition Corp (CAC), a Cayman Islands exempted company, entered into a First Amendment on August 6, 2026 to its Business Combination Agreement (originally dated November 9, 2025) with WISeSat.Space Holdings Corp. (Pubco), WISeSat Merger Sub Corp., WISeSat.Space Corp. (Target), WISeKey International Holding Ltd., and SEALSQ Corp (Sellers). The First Amendment extends the Outside Date—the deadline by which closing conditions must be satisfied—from its original date to October 31, 2026. Additionally, on August 6, 2026, SEALSQ agreed to invest $10,000,000 in Pubco Ordinary Shares at the Redemption Price (approximately $10.66 per share as of June 30, 2026, representing approximately 938,086 shares) contemporaneously with the business combination closing, with additional shares to be issued if the volume-weighted average price of Pubco shares falls below the purchase price in the 60 days following closing.

## Terms
- Counterparty: WISeSat.Space Holdings Corp., WISeSat.Space Corp., WISeKey International Holding Ltd., SEALSQ Corp · Deal value: $10.0M · Consideration: stock · Price/share: $10.66

## Key dates
- Announced 2026-06-04 · Expected close 2026-10-31

## Timeline
- 2026-06-04 · 425 (0001213900-26-064991): 425 - Columbus Acquisition Corp/Cayman Islands — *WISeSat develops secure satellite infrastructure and space-based services designed to support trusted communications, digital identity, secure data exchange and other security-sensitive applications.* WISeSat and its parent WISeKey International Holding Ltd. are combining with Columbus Acquisition Corp (Nasdaq: COLA), a special purpose acquisition company, pursuant to a definitive Business Combination Agreement dated November 9, 2025. Upon completion, WISeSat and CAC will each become subsidiaries of WISeSat.Space Holdings Corp. (Pubco), and the combined company is expected to trade on Nasdaq under the ticker symbol "WSAT." The transaction is subject to SEC review, CAC shareholder approval, effectiveness of the registration statement, and Nasdaq listing approval. WISeSat, a British Virgin Islands business company, develops secure satellite infrastructure and space-based services for trusted communications, digital identity, and secure data exchange.
  https://www.sec.gov/Archives/edgar/data/2028201/0001213900-26-064991.txt
- 2026-08-06 · 425 (0001213900-26-086249): 425 - Columbus Acquisition Corp/Cayman Islands — *Columbus Acquisition Corp is a Cayman Islands exempted company and blank-check acquisition vehicle engaged in a business combination with WISeSat.Space Corp., a British Virgin Islands company.* Columbus Acquisition Corp (CAC), a Cayman Islands exempted company, entered into a First Amendment on August 6, 2026 to its Business Combination Agreement (originally dated November 9, 2025) with WISeSat.Space Holdings Corp. (Pubco), WISeSat Merger Sub Corp., WISeSat.Space Corp. (Target), WISeKey International Holding Ltd., and SEALSQ Corp (Sellers). The First Amendment extends the Outside Date—the deadline by which closing conditions must be satisfied—from its original date to October 31, 2026. Additionally, on August 6, 2026, SEALSQ agreed to invest $10,000,000 in Pubco Ordinary Shares at the Redemption Price (approximately $10.66 per share as of June 30, 2026, representing approximately 938,086 shares) contemporaneously with the business combination closing, with additional shares to be issued if the volume-weighted average price of Pubco shares falls below the purchase price in the 60 days following closing.
  https://www.sec.gov/Archives/edgar/data/2028201/0001213900-26-086249.txt

## Citations
- 0001213900-26-064991 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026064991
- 0001213900-26-086249 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000121390026086249