Company: CIB
Filing Date: 2025-05-16
Form Type: 8-K12B
Source: 0001193125-25-121701
Chunk: 2

Company: Grupo Cibest S.A.
Filing Date: 2025-05-16
Form: 8-K12B
Chunk 2
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under Grupo Cibest’s CIK number in accordance with Rule 12g-3(f)under the Exchange Act for the purpose of establishing Grupo Cibest as a successor issuer to Bancolombia with respect to the Grupo Cibest ADSs, and to disclose certain other matters. Pursuant to Rule 12g-3(a)under the Exchange Act, the Grupo Cibest ADSs are deemed registered under Section 12(b) of the Exchange Act. Accordingly, as of the date of this Report on Form 6-K,Grupo Cibest is required to and will file periodic reports under the Exchange Act. The Grupo Cibest ADSs are expected to begin trading on the New York Stock Exchange (the “NYSE”) at the start of trading on May 19, 2025 under the symbol “CIB”, the same symbol under which the Bancolombia ADSs were traded on the NYSE prior to the Corporate Structure Changes. The CUSIP for the Grupo Cibest ADSs is 40090E 106. The NYSE will file a Form 25 with the SEC to remove the listing of the Bancolombia ADSs on the NYSE and from registration under Section 12(b) of the Exchange Act. The foregoing description of the Corporate Structure Changes and related matters is not complete and is qualified in its entirety by reference to the related descriptions included in the Registration Statement and by subsequent filings made by Bancolombia with the SEC under the Exchange Act, to the extent applicable. Grupo Cibest has issued a press release announcing the completion of the Corporate Structure Changes which is included as Exhibit 99.1 to this Report on Form 6-K. EXHIBIT LIST

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