Company: CIB
Filing Date: 2025-05-20
Form Type: 6-K
Source: 0002058897-25-000007
Chunk: 1

Company: Grupo Cibest S.A.
Filing Date: 2025-05-20
Form: 6-K
Chunk 1
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’s shareholders (excluding Grupo Cibest) have become shareholders of Grupo Cibest. Grupo Cibest issued, on their behalf, the same number and class of shares (common shares and preferred shares with no voting rights), under the same terms and conditions as those previously held in Bancolombia as of May 16, 2025, thereby maintaining the same ownership percentage they held in Bancolombia.

As of May 16, 2025, following the completion of the distribution of certain assets and subsidiaries, the shareholders of Grupo Cibest with an ownership percentage greater than 5% of the share capital are as follows:

| Name                                              |     |      Shares |     | Common Shareholding |     | Preferred Shareholding |     | Total Shareholding |
| Grupo de Inversiones Suramericana S.A.            |     | 235,012,336 |     | 46.11%              |     | 0.00%                  |     | 24.43%             |
| ADR Grupo Cibest S.A.                             |     | 117,373,308 |     | 0.00%               |     | 25.96%                 |     | 12.20%             |
| Fondo de Pensiones Obligatorias Porvenir Moderado |     |  49,424,268 |     | 8.06%               |     | 1.85%                  |     | 5.14%              |
| Fondo Bursátil ISHARES MSCI COLCAP                |     |  48,184,359 |     | 3.41%               |     | 6.82%                  |     | 5.01%              |

The new composition of Grupo Cibest’s share capital is the result of applying the exchange ratio between Bancolombia and Grupo Cibest of 1:1, which was determined using the book value as the valuation method.

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

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