6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUERPURSUANT TO RULE 13a-16 OR 15d-16 UNDERTHE SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2021

Commission File Number 001-34175

ECOPETROL S.A.

(Exact name of registrant as specified in its charter)

N.A.

(Translation of registrant’s name into English)

COLOMBIA

(Jurisdiction of incorporation or organization)

Carrera 13 No. 36 – 24

BOGOTA D.C. – 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 x      Form 40-F ¨

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)

Yes ¨      No x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7)

Yes ¨      No x

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 ¨      No x

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

SIGNATURES

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.

Ecopetrol S.A.
By:	/s/ Jaime Caballero Uribe
	Name:	Jaime Caballero Uribe
	Title:	Chief Financial Officer

Date: July 29, 2021

EX-99.1

Ecopetrol opposes to the preliminary injunctive relief requested in a public action (“Acción Popular”) filed against the sale of ISA

Ecopetrol S.A. (BVC: Ecopetrol; NYSE: EC) hereby reports that on July 28, 2021, it filed a statement in opposition to the preliminary injunctive relief requested within a public action (acción popular) to which it was named as defendant by means of a judicial order notified on July 21, 2021.

The acción popular is being processed by the First Section of the Administrative Court of Cundinamarca and was filed by Fundación Defensa de la Información Legal y Oportunidad – Dilo Colombia. The claimant is requesting the Court to issue a preliminary injunctive relief measure to cause the Ministry of Finance and Public Credit and Ecopetrol "... to refrain from continuing the process to sell the Nation's share ownership in ISA to Ecopetrol ..."

Ecopetrol opposes to the injunctive relief on the grounds that the claim has no legal basis. In its statement, Ecopetrol exposes the technical, financial, and legal arguments that show that Fundación Dilo Colombia did not comply with the legal requirements for said preliminary injunctive relief measure to be granted. In addition, Ecopetrol explained that the potential sale of the Nation’s ownership in ISA is allowed by Colombian legislation, maximizes benefits to the Nation and to Ecopetrol, and does not threaten or violate any of the collective rights invoked by the claimant.

Ecopetrol will continue to defend the legality of the potential ISA transaction in all stages of the judicial process described herein.

Bogotá D.C., July 29, 2021 

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Ecopetrol is the largest company in Colombia and one of the main integrated oil and gas conglomerates in Latin America, with more than 13,000 employees. It accounts for more than 60% of the hydrocarbon production in Colombia, and it owns the largest refineries and most of the country's oil-pipelines and multi-purpose pipelines network. It also participates in the commercialization of energy and in the distribution of gas. At the international level, Ecopetrol focuses on strategic basins on the American continent, with E&P operations in the United States (the Permian basin and the Gulf of Mexico), Brazil and Mexico. This press release contains statements relating to business prospects, estimates of operating and financial results, and Ecopetrol’s growth prospects. All are projections, and therefore are based solely on management’s expectations of the company’s future and its continuous access to capital to finance its sales plan. Achieving these estimates in the future depends on its performance under given market conditions, regulations, competition, the performance of the Colombian economy and industry, and other factors; therefore, they are subject to change without prior notice. 

For further details, please contact: 

Head of Capital Markets 

Tatiana Uribe Benninghoff 

Phone: +571-234-5190 

Email: investors@ecopetrol.com.co 

Media Engagement (Colombia) 

Jorge Mauricio Tellez 

Phone: + 571-234-4329 

Email: mauricio.tellez@ecopetrol.com.co