Company: CIB
Filing Date: 2025-05-16
Form Type: 6-K
Source: 0001193125-25-121769
Chunk: 1

Company: Grupo Cibest S.A.
Filing Date: 2025-05-16
Form: 6-K
Chunk 1
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 of Directors |

| 6. | Approval of the change in the purpose of the legal reserve, approval of the creation of a reserve for the 
 repurchase of shares, and approval of a share repurchase program.                                         |

Shareholders may be represented at the Meeting by granting powers of attorney in writing to authorized representatives, in accordance with Colombian law. To expedite entry into the meeting and the registration process, we recommend sending a scanned copy of the power of attorney to the following email address: asamblea.cibest@grupocibest.com.co, no later than June 6 at 3:00 p.m. Powers of attorney may not be granted to Grupo Cibest employees nor to any other person directly or indirectly related to the management of Grupo Cibest. Information about the proposal to be presented for the General Shareholders’ Meeting consideration will be available on the company’s website https://www.grupocibest.com, in accordance with the provisions of our Good Governance Code. We invite our shareholders to visit the website https://www.grupocibest.comto stay permanently informed about matters related to the General Shareholders’ Meeting. 3

JUAN CARLOS MORA URIBE CEO Management of Grupo Cibest confirms that all required processes and authorizations needed for the Extraordinary General Shareholder’s Meeting notice have been performed or obtained. Forward looking statements This release contains statements that may constitute “forward-looking statements.” These forward-looking statements are not based on historical facts but rather represent our beliefs regarding future events, many of which, by their nature, are inherently uncertain and beyond our control. Words such as “anticipate,” “believe,” “estimate,” “approximate,” “expect,” “may,” “intend,” “plan,” “predict,” “target,” “forecast,” “guideline,” “should,” “project,” and similar words and expressions are intended to identify forward-looking statements. Actual results may differ, possibly materially, from the anticipated results indicated in these forward-looking statements. Forward-looking statements speak only as of the date they are made, and no obligation is assumed to publicly update or revise any forward-looking statement after the date it is made in light of new information, future events, and other factors. Contacts

| Mauricio Botero Wolff  |     | Catalina Tobón Rivera  |
| Financial VP           |     | IR Director            |
| Tel.: (57 604) 4040858 |     | Tel.: (57 601)