# EDGAR Filing Document

**Accession Number:** 0002028201
**File Stem:** 0001213900-26-047502
**Filing Date:** 2026-4
**Character Count:** 5742
**Document Hash:** 6645eea81ea337cdb91eb3e0c640a2ff
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-047502.hdr.sgml**: 20260424

**ACCESSION NUMBER**: 0001213900-26-047502

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260420

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260424

**DATE AS OF CHANGE**: 20260424

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Columbus Acquisition Corp/Cayman Islands
- **CENTRAL INDEX KEY:** 0002028201
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42485
- **FILM NUMBER:** 26893434

**BUSINESS ADDRESS:**
- **STREET 1:** 89 NEXUS WAY
- **STREET 2:** CAMANA BAY
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-9009
- **BUSINESS PHONE:** 212-451-2930

**MAIL ADDRESS:**
- **STREET 1:** 89 NEXUS WAY
- **STREET 2:** CAMANA BAY
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-9009

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **April 20, 2026**

---

| |
|:---|
| **COLUMBUS ACQUISITION CORP** |
| (Exact name of registrant as specified in its charter) |

---

---

| | | |
|:---|:---|:---|
| **Cayman Islands** | **001-42485** | **N/A** |
| (State or other jurisdiction | (Commission File Number) | (IRS Employer |
| of incorporation) |  | Identification Number) |

---

---

| |
|:---|
| **14 Prudential Tower**<br> **Singapore 049712** |
| (Address of principal executive offices) |

---

**(+1) 949 899 1827**

**(**Registrant's telephone number, including area code)

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

&nbsp;&nbsp;&nbsp;&nbsp;☒ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act.

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol** | **Name of each exchange on which registered** |
| Units, consisting of one ordinary share, $0.0001 par value, and one Right to acquire one-seventh of one ordinary share | COLAU | The Nasdaq Stock Market LLC |
| Ordinary shares, par value $0.0001 per share | COLA | The Nasdaq Stock Market LLC |
| Rights, each whole right to acquire one-seventh of one ordinary share | COLAR | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

**Item 8.01. Other Events.**

Pursuant to the amended and restated memorandum and articles of association (the "**Charter**") of Columbus Acquisition Corp, a Cayman Islands exempted company (the "**Company**"), the Company had until April 22, 2026 to complete its initial business combination, however the Company may extend the period of time to consummate a business combination up to January 22, 2027, each by a one-month extension, subject to the deposit of $50,000 (the "**Monthly Extension Fee**") into the trust account of the Company (the "**Trust Account**").

On or about April 20, 2026, an aggregate of $50,000 of the Monthly Extension Fee was deposited into the Trust Account for the public shareholders, which enabled the Company to extend the period of time it has to consummate its initial business combination by one month from April 22, 2026 to May 22, 2026. Among the Monthly Extension Fee, $25,000 was paid from the Company's working capital, and the remaining $25,000 was paid by WISeSat.Space Corp., a British Virgin Islands business company (the "**Target**") pursuant to that certain business combination agreement dated as of November 9, 2025 (as it may be amended, supplemented, or otherwise modified from time to time, the "**Business Combination Agreement**") by and among the Company, the Target and other parties thereto in connection with a proposed business combination.

**Item 9.01 Financial Statements and Exhibits.**

---

| | |
|:---|:---|
| **Exhibit No.** | **Description of Exhibits** |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **Columbus Acquisition Corp** | **Columbus Acquisition Corp** |
|  | By: | /s/ Fen Zhang |
|  | Name: | Fen Zhang |
|  | Title: | Chief Executive Officer |
| Date: April 24, 2026 |  |  |

---