Form 8-K

8-K — Columbus Acquisition Corp/Cayman Islands

Accession: 0001213900-26-061006

Filed: 2026-05-26

Period: 2026-05-22

CIK: 0002028201

SIC: 6770 (BLANK CHECKS)

Item: Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

Documents

8-K — ea0292174-8k_columbus.htm (Primary)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — CURRENT REPORT

8-K (Primary)

Filename: ea0292174-8k_columbus.htm · Sequence: 1

false

Singapore

0002028201

Columbus Acquisition Corp/Cayman Islands

00-0000000

0002028201

2026-05-22

0002028201

COLA:UnitsConsistingOfOneOrdinaryShare0.0001ParValueAndOneRightToAcquireOneseventhOfOneOrdinaryShareMember

2026-05-22

0002028201

COLA:OrdinarySharesParValue0.0001PerShareMember

2026-05-22

0002028201

COLA:RightsEachWholeRightToAcquireOneseventhOfOneOrdinaryShareMember

2026-05-22

iso4217:USD

xbrli:shares

iso4217:USD

xbrli:shares

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):

May 22, 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

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:

☐

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 3.01. Notice of Delisting or Failure to

Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

Nasdaq Minimum Holders Requirement

On May 22, 2026, Columbus

Acquisition Corp, a Cayman Islands exempted company (the “Company”) received written notice (the “Minimum

Holders Notice”) from the Listing Qualifications Staff of the Nasdaq Stock Market LLC (“Nasdaq”) indicating

that the Company no longer complies with the Nasdaq Global Market continued listing criteria set forth in Listing Rule 5450 (a)(2) (the

“Minimum Holders Rule”), which requires the Company to maintain a minimum of 400 holders for continued listing on Nasdaq.

The Minimum Holders Notice is only a notification of deficiency, not of imminent delisting, and has no current effect on the listing or

trading of the Company’s securities on the Nasdaq.

The Minimum Holders Notice

states that the Company has 45 calendar days, or until July 6, 2026, to submit a plan to regain compliance with the Minimum Holders Rule.

If the Company is unable to regain compliance by that date, the Company intends to submit a plan to regain compliance with the Minimum

Holders Rule within the required timeframe. If Nasdaq accepts the Company’s compliance plan, then Nasdaq may grant the Company an

extension of up to180 calendar days from the date of the Minimum Holders Notice to evidence compliance. If Nasdaq does not accept the

Company’s plan, then the Company will have the opportunity to appeal that decision to a Nasdaq Hearings Panel.

Nasdaq Market Value of Listed Securities

Requirement

On the same day, the Company

received written notice (the “MVLS Notice”) from the Listing Qualifications Department of Nasdaq that, for the previous

30 consecutive business days, the market value of listed securities (“MVLS”) for the Company was below the $50 million minimum

MVLS requirement for continued listing on the Nasdaq Global Market under Nasdaq Listing Rule 5450(b)(2)(A) (the “MVLS Rule”).

The MVLS Notice is only a notification of deficiency, not of imminent delisting, and has no current effect on the listing or trading of

the Company’s securities.

In accordance with Nasdaq

Listing Rule 5810(c)(3)(C), the Company will have 180 calendar days, or until November 18, 2026 (the “Compliance Period”),

to regain compliance with the MVLS Rule. To regain compliance with the MVLS Rule, the MVLS for the Company must be at least $50 million

for a minimum of 10 consecutive business days at any time during this Compliance Period. If the Company regains compliance with the MVLS

Rule, Nasdaq will provide the Company with written confirmation and will close the matter.

If the Company does not regain

compliance with the MVLS Rule during the Compliance Period, Nasdaq will provide written notification that its securities will be subject

to delisting. In the event of such notification, the Nasdaq rules permit the Company an opportunity to appeal to Nasdaq’s determination.

The MVLS Notice notes that the Company may be eligible to transfer the listing of its securities to the Nasdaq Capital Market, provided

that it then satisfies the requirements for continued listing on the Capital Market.

The Company is monitoring

its MLVS and evaluating options to regain compliance with the MVLS Rule. However, there can be no assurance that the Company will be able

to regain or maintain compliance with the MVLS Rule.

Forward-Looking Statements

The Company makes forward-looking

statements in this report within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements

relate to expectations or forecasts for future events. These forward-looking statements are based on information available to us as of

the date of this report, and involve substantial risks and uncertainties. Actual results may vary materially from those expressed or implied

by the forward-looking statements herein due to a variety of factors, including the Company’s ability to submit a plan of compliance

satisfactory to Nasdaq, its ability to evidence that it has a minimum of 400 holders, its ability to regain compliance with MVLS

Rules and other risks and uncertainties set forth in the Company’s reports filed with the Securities and Exchange Commission. The

Company does not undertake any obligation to update forward-looking statements as a result of new information, future events, or developments

or otherwise.

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

By:

/s/ Fen Zhang

Name:

Fen Zhang

Title:

Chief Executive Officer

Date: May 26, 2026

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 7

v3.26.1

Cover

May 22, 2026

Document Type

8-K

Amendment Flag

false

Document Period End Date

May 22, 2026

Entity File Number

001-42485

Entity Registrant Name

Columbus Acquisition Corp/Cayman Islands

Entity Central Index Key

0002028201

Entity Tax Identification Number

00-0000000

Entity Incorporation, State or Country Code

Entity Address, Address Line One

14 Prudential Tower

Entity Address, City or Town

Singapore

Entity Address, Country

Entity Address, Postal Zip Code

049712

City Area Code

Local Phone Number

949 899 1827

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Entity Emerging Growth Company

true

Elected Not To Use the Extended Transition Period

false

Units, consisting of one ordinary share, $0.0001 par value, and one Right to acquire one-seventh of one ordinary share

Title of 12(b) Security

Units, consisting of one ordinary share, $0.0001 par value, and one Right to acquire one-seventh of one ordinary share

Trading Symbol

COLAU

Security Exchange Name

NASDAQ

Ordinary shares, par value $0.0001 per share

Title of 12(b) Security

Ordinary shares, par value $0.0001 per share

Trading Symbol

COLA

Security Exchange Name

NASDAQ

Rights, each whole right to acquire one-seventh of one ordinary share

Title of 12(b) Security

Rights, each whole right to acquire one-seventh of one ordinary share

Trading Symbol

COLAR

Security Exchange Name

NASDAQ

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

ISO 3166-1 alpha-2 country code.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCountry

Namespace Prefix:

dei_

Data Type:

dei:countryCodeItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 7A

-Section B

-Subsection 2

+ Details

Name:

dei_EntityExTransitionPeriod

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Details

Name:

us-gaap_StatementClassOfStockAxis=COLA_UnitsConsistingOfOneOrdinaryShare0.0001ParValueAndOneRightToAcquireOneseventhOfOneOrdinaryShareMember

Namespace Prefix:

Data Type:

Balance Type:

Period Type:

- Details

Name:

us-gaap_StatementClassOfStockAxis=COLA_OrdinarySharesParValue0.0001PerShareMember

Namespace Prefix:

Data Type:

Balance Type:

Period Type:

- Details

Name:

us-gaap_StatementClassOfStockAxis=COLA_RightsEachWholeRightToAcquireOneseventhOfOneOrdinaryShareMember

Namespace Prefix:

Data Type:

Balance Type:

Period Type: