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

Rhea-AI Filing Summary

Grupo Cibest S.A. filed a Form 6-K announcing completion of a corporate reorganization involving its Panamanian operations. The company finalized two steps: the merger of Sociedad Beneficiaria VB Panamá S.A. into Banistmo S.A. after certain portfolios were spun off to Sociedad Beneficiaria VB, and the partial spin-off by Banistmo of 100% of the shares it held in Valores Banistmo S.A. to Cibest Panamá Assets S.A., a wholly owned subsidiary of Grupo Cibest.

Approvals were obtained from the Superintendency of Banks of Panama and the shareholders of the relevant entities. The company states there are no new ultimate shareholders and no changes to the control structure. Valores Banistmo remains a Grupo Cibest subsidiary, keeps its brokerage and investment manager licenses in Panama, and is now part of the Cibest Capital brand with no material changes to its business model.

Insights

Banking & LatAm Corporate Reorg Analyst

Structural reorg completed; control and licenses unchanged.

Grupo Cibest completed a Panama-focused reorganization by merging Sociedad Beneficiaria VB into Banistmo and spinning off Banistmo’s 100% stake in Valores Banistmo to a wholly owned vehicle, Cibest Panamá Assets. Required approvals from the Superintendency of Banks of Panama and shareholders were obtained.

The company states no new ultimate shareholders and no changes to control, indicating continuity. Valores Banistmo retains its brokerage and investment manager licenses and moves under the Cibest Capital brand, with no material changes to its business model per the disclosure.

Operational implications hinge on integration under the Cibest Capital brand; subsequent filings may provide performance details by unit if the company reports brand-aligned metrics.

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 October, 2025

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 October 21, 2025			By:			/s/ MAURICIO BOTERO WOLFF.
			Name:			Mauricio Botero Wolff
			Title:			Vice President of Strategy and Finance

October 21, 2025

Medellin, Colombia

GRUPO CIBEST S.A. ANNOUNCES THE COMPLETION OF THE CORPORATE REORGANIZATION OF BANISTMO S.A. AND OTHER SUBSIDIARIES OF GRUPO CIBEST IN PANAMA

Grupo Cibest S.A. (“Grupo Cibest”) announces that, as part of the reorganization steps disclosed to the market on September 29, 2025, aimed at evolving its corporate structure through a corporate restructuring of its Panamanian subsidiary Banistmo S.A. (“Banistmo”) and other affiliated entities in Panama, and upon obtaining the corresponding authorizations from the Superintendency of Banks of Panama and the Shareholders’ Meetings of Banistmo and the other subsidiaries, the following transactions have been duly completed as of today:

1.The merger of Sociedad Beneficiaria VB Panamá S.A. (“Sociedad Beneficiaria VB”) with Banistmo. Prior to the merger, Sociedad Beneficiaria VB Panamá S.A. received certain portfolios of assets that were partially spun off by Valores Banistmo S.A. (“Valores Banistmo”) and Banistmo Capital Markets Group Inc.

2.The partial spin-off by Banistmo of 100% of the shares it holds in Valores Banistmo in favor of Cibest Panamá Assets S.A. (“Cibest Panamá Assets”), a Panamanian corporation wholly owned by Grupo Cibest.

As of today, Valores Banistmo S.A. will continue to be a subsidiary of Grupo Cibest. The reorganization does not result in the introduction of any new ultimate shareholders nor changes to the control structure. Additionally, Valores Banistmo is now incorporated into the Cibest Capital brand, which consolidates and enhances the regional capabilities in securities, investment banking, and capital markets-related products of Grupo Cibest across the countries in which it operates.

Valores Banistmo retains its licenses as a securities brokerage firm and investment manager, both granted by the Superintendency of the Securities Market of Panama. There are no material changes to its business model.

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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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FAQ

What did CIB (Grupo Cibest) announce in this 6-K?

It completed a corporate reorganization in Panama, merging Sociedad Beneficiaria VB Panamá S.A. into Banistmo and spinning off Banistmo’s 100% stake in Valores Banistmo to Cibest Panamá Assets S.A.

Does the reorganization change control or ownership at CIB?

No. The company states there are no new ultimate shareholders and no changes to the control structure.

What happens to Valores Banistmo S.A. after the reorganization?

It remains a subsidiary of Grupo Cibest, joins the Cibest Capital brand, and keeps its brokerage and investment manager licenses in Panama.

Were regulatory and shareholder approvals obtained for CIB’s Panama reorganization?

Yes. Approvals came from the Superintendency of Banks of Panama and the shareholders of the involved entities.

Is there any change to Valores Banistmo’s business model?

The company states there are no material changes to its business model.

Which entity received Banistmo’s shares of Valores Banistmo?

Cibest Panamá Assets S.A., a Panamanian corporation wholly owned by Grupo Cibest.