Company: CIB
Filing Date: 2025-05-16
Form Type: 6-K
Source: 0001193125-25-121778
Chunk: 1

Company: Grupo Cibest S.A.
Filing Date: 2025-05-16
Form: 6-K
Chunk 1
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 • |     | Accept powers of attorney conferred by the shareholders as valid if all legal requirements have not been                                                                                                       
 fulfilled. Powers of-attorney must be granted in writing, indicating the name of the representative, the person who can replace the representative, if applicable, and the date of the meeting. Legal entities 
 that grant powers-of-attorney must include a recent certificate of good standing that proves their existence and representation in accordance with the law.                                                    |

| • |     | Suggest or determine the names of those who will act as representatives of the shareholders at the meetings. |

| • |     | Recommend that shareholders vote for a certain list. This does not restrict the Board of Directors or the CEO, in 
 the exercise of their duties, from presenting proposals for the consideration of the shareholders’ meeting.       |

| • |     | Coordinate or enter into an agreement with any shareholder or with any representative of shareholders to vote in 
 favor or against any proposal that is presented in the shareholders’ meeting.                                    |

The activities described above will also be prohibited when they are carried out through a legal representative, agent or intermediary. 3

Pursuant to these measures, the management of Grupo Cibest will need to implement the following procedures to ensure a fair treatment of the shareholders:

| • |     | To encourage the delegation of powers of attorney in compliance with legal requirements in the Extraordinary                                                               
 General Shareholders’ Meeting, Grupo Cibest will make available on its website templates of these legal documents that can be downloaded and completed by any shareholder. |

| • |     | Shareholders will have full discretion to appoint their proxy holders. |

| • |     | Management will not suggest or coordinate with any of the shareholders to vote in favor or against any proposal 
 that is presented in the Extraordinary General Shareholders’ Meeting.                                           |

| • |     | Grupo Cibest will make a team available at the Extraordinary General Shareholders’ Meeting to confirm                                                                 
 compliance of the powers of attorneys conferred by the shareholders with legal requirements and that the proxy holders are not included in the database of employees. |

Management and employees, while in the exercise of their duties, may not exercise their powers to represent shares other than their own in shareholders’ meetings, nor substitute the powers granted to them. This prohibition does not apply to legal representation. Management and employees may also not vote, even with their own shares, on the matters related to approving end of the year or liquidation balance sheets and accounts. The management