UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

For the month of March, 2018

Comission File Number 001-32535

Bancolombia S.A.

(Translation of registrant’s name into English)

Cra. 48 # 26-85
Medellín, Colombia
(Address of principal executive offices)

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-F þ                    Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):___

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(2):___

Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o                    No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-                    .

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BANCOLOMBIA S.A. ANNOUNCES REELECTION OF THE BOARD OF DIRECTORS

Medellin, Colombia, March 14, 2018

At a meeting held today, the General Shareholders’ Assembly of Bancolombia S.A. elected the following persons to the Board of Directors of the Bank from April 2018 to March 2020:

David Bojanini García

Gonzalo Alberto Pérez Rojas

Hernando José Gómez Restrepo

Roberto Ricardo Steiner Sampedro

Luis Fernando Restrepo Echavarría

Andres Felipe Mejía Cardona

Arturo Condo Tamayo

Messrs. Hernando José Gómez Restrepo, Roberto Ricardo Steiner Sampedro, Luis Fernando Restrepo Echavarría, Andres Felipe Mejía Cardona and Arturo Condo Tamayo will serve as independent directors.

Contacts
Jaime A. Velásquez	Jose Humberto Acosta	Alejandro Mejía
Strategy and Finance VP	Financial VP	IR Manager
Tel.: (574) 4042199	Tel: (571) 4885934	Tel.: (574) 4041837

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.

	BANCOLOMBIA S.A. (Registrant)
Date:  March 14, 2018	By:	/s/  JAIME ALBERTO VELÁSQUEZ B.
		Name:	Jaime Alberto Velásquez B.
		Title:	Vice President of Strategy and Finance