[6-K] Grupo Cibest S.A. Current Report (Foreign Issuer)

Rhea-AI Filing Summary

Grupo Cibest S.A. reported a change in its senior management structure. The Board of Directors approved the discontinuation of the position of Payments, Cash Flows and Insurance Vice Presidency at Grupo Cibest, which had been held by Liliana Patricia Vásquez Uribe.

Bancolombia S.A., a subsidiary of Grupo Cibest, created the new role of Payments, Flows and Insurance Corporate Vice Presidency and appointed Liliana Patricia Vásquez Uribe to that position. These decisions are effective as of May 26, 2026.

Key Figures

Form type: Form 6-K Effective date of changes: May 26, 2026 Medellín phone: (57 604) 4040858 +1 more

4 metrics

Form type Form 6-K Report of foreign private issuer for May 2026

Effective date of changes May 26, 2026 Senior management decisions effective date

Medellín phone (57 604) 4040858 Strategy and Financial VP contact

Bogotá phone (57 601) 4885950 Investor Relations Director contact

Key Terms

Senior Management, Board of Directors, Corporate Vice Presidency, foreign private issuer, +1 more

5 terms

Senior Management financial

"approved today the following decision in relation to its Senior Management"

Board of Directors financial

"its Board of Directors approved today the following decision"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

Corporate Vice Presidency financial

"the position of Payments, Flows and Insurance Corporate Vice Presidency of Bancolombia"

foreign private issuer regulatory

"REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

subsidiary financial

"Bancolombia S.A., a subsidiary of Grupo Cibest, announced the creation"

A subsidiary is a company that is controlled or owned by a larger company, known as the parent company. Think of it like a branch or division of a bigger organization; it operates separately but is ultimately guided by the parent. For investors, understanding subsidiaries helps clarify how a larger company is structured and where its resources and risks are concentrated.

Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

For the month of May,2026

Commission File Number 001-42656

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Grupo Cibest S.A.

(Translation of registrant’s name into English)

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Cra. 48 # 26-85

Medellín, Colombia

(Address of principal executive offices)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F þ Form 40-F o

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SIGNATURE

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, thereunto duly authorized.

			Grupo CIBEST S.A. (Registrant)
Date May, 26,2026			By:			/s/ MAURICIO BOTERO WOLFF.
			Name:			Mauricio Botero Wolff
			Title:			Vice President of Strategy and Finance

May 26, 2026

Medellin, Colombia

GRUPO CIBEST S.A. ANNOUNCES CHANGES IN SENIOR MANAGEMENT

Grupo Cibest S.A. (“Grupo Cibest”) announces that its Board of Directors approved today the following decision in relation to its Senior Management:

•The discontinuation of the position of Payments, Cash Flows and Insurance Vice Presidency of Grupo Cibest held by Liliana Patricia Vásquez Uribe.

Bancolombia S.A., a subsidiary of Grupo Cibest, announced the creation of the position of Payments, Flows and Insurance Corporate Vice Presidency of Bancolombia and the appointment of Liliana Patricia Vásquez Uribe to such position.

The decisions adopted by the Board of Directors are effective as of today’s date.

Contacts

Mauricio Botero Wolff			Catalina Tobón Rivera
Strategy and Financial VP			IR Director
Tel.: (57 604) 4040858			Tel.: (57 601) 4885950
ir@Grupocibest.com.co			ir@Grupocibest.com.co

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