Company: CIB
Filing Date: 2025-11-06
Form Type: 6-K
Source: 0002058897-25-000050
Chunk: 0

Company: Grupo Cibest S.A.
Filing Date: 2025-11-06
Form: 6-K
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>--------------------</div>

#### FORM 6-K
<div align='center'>--------------------</div>

### REPORT OF FOREIGN PRIVATE ISSUER

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

#### THE SECURITIES EXCHANGE ACT OF 1934

#### For the month of November,2025

#### Commission File Number 001-42656
<div align='center'>--------------------</div>

#### Grupo Cibest S.A.
<div align='center'>(Translation of registrant’s name into English)

--------------------</div>

#### Cra. 48 # 26-85

#### Medellín, Colombia
<div align='center'>(Address of principal executive offices)

--------------------</div>

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-Fþ |     | Form 40-Fo |

| 1 |

### 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 November, 6, 2025 |     | By:               |     | /s/ MAURICIO BOTERO WOLFF.             |
|                        |     | Name:             |     | Mauricio Botero Wolff                  |
|                        |     | Title:            |     | Vice President of Strategy and Finance |

November 6, 2025

Medellin, Colombia

GRUPO CIBEST S.A. ANNOUNCES THAT THE FINANCIAL SUPERINTENDENCY OF COLOMBIA HAS GRANTED NEQUI S.A. COMPAÑÍA DE FINANCIAMIENTO THE AUTHORIZATION CERTIFICATE (OPERATING PERMIT)

Grupo Cibest S.A. (“Grupo Cibest”) announces that the Financial Superintendency of Colombia, through No. 2002 dated October 31, 2025, as amended by Resolution No. 2021 dated November 4, 2025 (the “Resolution”), has authorized Nequi S.A. Compañía de Financiamiento (“