EC / Ecopetrol S.A. - Depositary Receipt (Common Stock) - SEC申報文件，年度報告，委任書

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Decisions of the Board of Directors of Ecopetrol

Decisions of the Board of Directors of Ecopetrol Bogota D.C., May 27, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (the “Company”) announces that its Board of Directors, at its universal meeting held today, authorized the postponement of the start date of the unpaid leave granted to the Company’s Chief Executive Officer, Ricardo Roa Barragán, which had been disclosed on April 6, 2026. This decis

Ecopetrol advances in the acquisition of an equity stake in Brava Energia S.A. through the launch of a tender offer in Brazil

Ecopetrol advances in the acquisition of an equity stake in Brava Energia S.A. through the launch of a tender offer in Brazil Bogota D.C., May 25, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that today its Brazilian subsidiary, Ecopetrol Investimentos do Brasil LTDA, after obtaining approval from B3, launched a voluntary Tender Offer (TO) on Brazil’s B3 stock exchange at a price of R$

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Ecopetrol advances acquisition of the Jemeiwaa Ka’I wind cluster in La Guajira with the purchase of a 49% interest in the JK1 and JK2 wind projects

Ecopetrol advances acquisition of the Jemeiwaa Ka’I wind cluster in La Guajira with the purchase of a 49% interest in the JK1 and JK2 wind projects Bogota D.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Ecopetrol releases quarterly report as of March 31, 2026

Ecopetrol releases quarterly report as of March 31, 2026 Bogota D.C., May 15, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that, in accordance with External Circular No. 012 of 2022 issued by the Superintendence of Finance of Colombia, it has published its Quarterly Periodic Report as of March 31, 2026. The Quarterly Periodic Report contains information regarding the Company’s financia

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Table 1: Financial and Operational Summary – Ecopetrol Group

We began 2026 in a challenging geopolitical environment resulting from the escalation of the conflict in the Middle East since March 2026.

Update from the Board of Directors of Ecopetrol S.A.

Update from the Board of Directors of Ecopetrol S.A. Bogota D.C., May 12, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) hereby announces that Mr. Juan Gonzalo Castaño Valderrama has submitted his resignation as a non-independent member of the Board of Directors, citing personal and professional reasons. His resignation became effective upon the conclusion of the Board of Directors meeting held to

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Ecopetrol informs on decision by Colombia’s General Prosecutor’s Office

Ecopetrol informs on decision by Colombia’s General Prosecutor’s Office Bogota D.C., May 11, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) hereby announces that, within the framework of an investigation conducted by Colombia’s General Prosecutor’s Office (Fiscalía General de la Nación) against Ecopetrol’s President, Ricardo Roa, such authority has formally charged Mr. Ricardo Roa with alleged vio

Ecopetrol S.A. Announces the Formalization of the Bylaws Amendment Approved by the General Shareholders’ Meeting

Ecopetrol S.A. Announces the Formalization of the Bylaws Amendment Approved by the General Shareholders’ Meeting Bogota D.C., May 11, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) hereby announces that it has duly registered with the Bogotá Chamber of Commerce the amendment to its Bylaws, as approved by the Company’s General Shareholders’ Meeting on November 11, 2025, and as set forth in Public D

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2026 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 i

Ecopetrol Files Its Form 20-F for the Fiscal Year 2025 with the U.S. Securities and Exchange Commission

Ecopetrol Files Its Form 20-F for the Fiscal Year 2025 with the U.S. Securities and Exchange Commission Bogota D.C., April 30, 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) hereby announces that it filed its Annual Report on Form 20-F for the fiscal year ended December 31, 2025, with the U.S. Securities and Exchange Commission (SEC) on April 30, 2026. By filing the Form 20-F, Ecopetrol fulfills i

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Convenience translation to English. Original in Spanish Loan Contract Bancolombia S.A. Ecopetrol S.A. Bogotá D.C., March 17, 2023

Exhibit 4.42 Convenience translation to English. Original in Spanish Loan Contract Between Bancolombia S.A. (“Lender”) and Ecopetrol S.A. (“Borrower”) Bogotá D.C., March 17, 2023 ECP-INFORMACION PUBLICA Loan Contract Ecopetrol S.A. – Confidential – List of Annexes Annex I - Certificate of Existence and Legal Representation of Bancolombia S.A. Annex II (a) - Certificate of Existence and Legal Repre

ECP-INFORMACION PUBLICA

Exhibit 4.44 AMENDMENT No. 2 TO THE INTERNAL LOAN AGREEMENT SIGNED ON MARCH 17, 2023 BETWEEN ECOPETROL S.A., AND BANCOLOMBIA S.A., UP TO THE SUM OF ONE TRILLION PESOS (COP1,000,000,000,000,000) COLOMBIAN LEGAL CURRENCY Among the signed, namely: i. Ecopetrol S.A., created by the authorization of Law 165 of 1948 by Decree 0030 of 1951, a mixed economy company, of a commercial nature, with its princi

Convenience translation to English. Original in Spanish

Exhibit 4.46 Convenience translation to English. Original in Spanish AMENDMENT No. 1 TO THE LOAN CONTRACT SIGNED ON JUNE TWENTY-EIGHT (28), TWO THOUSAND AND TWENTY-FOUR (2024) BETWEEN ECOPETROL S.A., AND BANCO DE BOGOTÁ S.A., BANCO DE OCCIDENTE S.A AND BANCO POPULAR S.A, AS LENDERS, UP TO THE SUM OF ONE TRILLION PESOS (COP 1,000,000,000,000) COLOMBIAN LEGAL CURRENCY Among the signed, namely: i. EC

CRUDE OIL SERVICES FRAMEWORK AGREEMENT GENERAL CONDITIONS CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH

Exhibit 4.37 H CRUDE OIL SERVICES FRAMEWORK AGREEMENT GENERAL CONDITIONS CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH AMENDMENT NO. 23 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. BOGOTÁ D.C., DECEMBER 24, 2025 Page 1 de 6 AMENDMENT N° 23 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Convenience translation to English. O

Convenience translation to English. Original in Spanish ADDENDUM No. 4 TO THE FRAMEWORK AGREEMENT FOR THE SALE OF ELECTRICITY ENTERED INTO BETWEEN GENERADORA Y COMERCIALIZADORA DEL ENERGÍA DEL CARIBE S.A. E.S.P. – GECELCA AND ECOPETROL S.A.

Exhibit 4.41 Convenience translation to English. Original in Spanish ADDENDUM No. 4 TO THE FRAMEWORK AGREEMENT FOR THE SALE OF ELECTRICITY ENTERED INTO BETWEEN GENERADORA Y COMERCIALIZADORA DEL ENERGÍA DEL CARIBE S.A. E.S.P. – GECELCA AND ECOPETROL S.A. The parties hereto are as follows: ECOPETROL S.A. (hereinafter “Ecopetrol”), a decentralized national entity, authorized by Law 1118 of 2006 as a

DEGOLYER AND MACNAUGHTON 5001 SPRING VALLEY ROAD SUITE 800 EAST DALLAS, TEXAS 75244 This is a digital representation of a DeGolyer and MacNaughton report.

Exhibit 99.2 DEGOLYER AND MACNAUGHTON 5001 SPRING VALLEY ROAD SUITE 800 EAST DALLAS, TEXAS 75244 This is a digital representation of a DeGolyer and MacNaughton report. This file is intended to be a manifestation of certain data in the subject report and as such is subject to the same conditions thereof. The information and data contained in this file may be subject to misinterpretation; therefore,

SEC Proved Reserves Statement for Twenty-Two Fields in which Ecopetrol has an Interest, Colombia as of December 31, 2025

Exhibit 99.3 Gaffney, Cline & Associates, Inc. 14990 Yorktown Plaza Dr Houston, TX 77040 February 20, 2026 Fidel Delgado Loria Gerente de Reservas Ecopetrol S.A. Carrera 13 No. 36 – 24 Bogotá, D.C. Colombia [email protected] Dear Fidel, SEC Proved Reserves Statement for Twenty-Two Fields in which Ecopetrol has an Interest, Colombia as of December 31, 2025 Introduction This Proved rese

LOAN AGREEMENT ECOPETROL S.A., as Borrower, THE LENDERS PARTY HERETO, BANCO SANTANDER, S.A., as Administrative Agent, BANCO SANTANDER, S.A., as Lead Arranger Dated as of April 30, 2025

Exhibit 4.32 Execution version LOAN AGREEMENT among ECOPETROL S.A., as Borrower, THE LENDERS PARTY HERETO, and BANCO SANTANDER, S.A., as Administrative Agent, and BANCO SANTANDER, S.A., as Lead Arranger Dated as of April 30, 2025 TABLE OF CONTENTS Page SECTION 1 DEFINITIONS AND PRINCIPLES OF CONSTRUCTION 1.01. Defined Terms 1 1.02. Principles of Construction 21 1.03. Rates 22 SECTION 2 THE LOAN 2.

CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH CRUDE FRAMEWORK SERVICES AGREEMENT GENERAL CONDITIONS

Exhibit 4.36 CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH CRUDE FRAMEWORK SERVICES AGREEMENT GENERAL CONDITIONS AMENDMENT NO. 22 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. BOGOTÁ D.C., AUGUST 26, 2025 Page 1de 6 OTROSÍ N° 22 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Convenience translation to English. Original in S

HOUSTON, TEXAS 77002-5294

Exhibit 99.1 TBPELS REGISTERED ENGINEERING FIRM F-1580 1100 LOUISIANA SUITE 4600 HOUSTON, TEXAS 77002-5294 TELEPHONE (713) 651-9191 February 23, 2026 Ecopetrol Cra. 13 No. 36-24 Edificio Principal, Piso 7 Bogotá, D.C., Colombia Ladies and Gentlemen: At the request of Ecopetrol, Ryder Scott Company, L.P. (Ryder Scott) has prepared an estimate of the proved reserves attributable to certain interests

POLICY FOR THE USE OF INSIDE INFORMATION OF ECOPETROL S.A.

Exhibit 7.2 POLICY FOR THE USE OF INSIDE INFORMATION OF ECOPETROL S.A. INVESTOR RELATIONS OFFICE CODE: Elaborated: Version: GFI-POL-001 22/04/2026 5 OBJECTIVE This Policy aims to ensure compliance with applicable regulations for Ecopetrol S.A. (“Ecopetrol” or the “Company”) Administrators, Executive Officers, and Employees who, in the course of their duties, have access to inside information and t

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Exhibit 13.1 Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Ecopetrol S.A. (the “Company”), does hereby cert

ECOPETROL S.A. CLAWBACK POLICY

Exhibit 7.1 ECOPETROL S.A. CLAWBACK POLICY Ecopetrol S.A. (the "Company"), with the approval of the Board of Directors (the “Board”), has adopted this clawback policy (the "Policy"), in accordance with the applicable provisions of the New York Stock Exchange Company Manual (the "Clawback Rules"), enacted pursuant to the final rules adopted by the Securities and Exchange Commission in relation to c

Convenience translation to English. Original in Spanish Loan Contract Banco de Bogotá S.A., Banco de Occidente S.A. Banco Popular S.A. Ecopetrol S.A. Bogotá D.C., June 28, 2024

Exhibit 4.45 Convenience translation to English. Original in Spanish Loan Contract Among Banco de Bogotá S.A., Banco de Occidente S.A. and Banco Popular S.A. (“Lenders”) and Ecopetrol S.A. (“Borrower”) Bogotá D.C., June 28, 2024 ECP-PUBLIC INFORMATION Convenience translation to English. Original in Spanish Loan Contract Ecopetrol S.A. – Confidential – List of Annexes Annex I (a) - Certificate of E

Convenience translation to English. Original in Spanish

Exhibit 4.38 Convenience translation to English. Original in Spanish AMENDMENT NO. 23 TO THE FRAMEWORK CONTRACT FOR SERVICES FOR PRODUCTS Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. BOGOTÁ D.C. APRIL TWENTY-TWO (22), 2025 Convenience translation to English. Original in Spanish AMENDMENT NO. 23 TO THE FRAMEWORK SERVICE AGREEMENT FOR PRODUCTS This Amendment No. 23

FRAMEWORK SERVICE AGREEMENT FOR PRODUCTS GENERAL CONDITIONS CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH

Exhibit 4.35 FRAMEWORK SERVICE AGREEMENT FOR PRODUCTS GENERAL CONDITIONS CONVENIENCE TRANSLATION TO ENGLISH. ORIGINAL IN SPANISH AMENDMENT NO. 21 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. BOGOTÁ D.C., JUNE 12, 2025 Page 1 de 3 Amendment N° 21 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Convenience translation to English. Origi

Convenience translation to English. Original in Spanish

Exhibit 4.43 Convenience translation to English. Original in Spanish AMENDMENT No. 1 TO THE INTERNAL LOAN AGREEMENT SIGNED ON MARCH 17, 2023 BETWEEN ECOPETROL S.A., AND BANCOLOMBIA S.A., UP TO THE SUM OF ONE TRILLION PESOS (COP1,000,000,000,000,000) COLOMBIAN LEGAL CURRENCY Among the signed, namely: i. Ecopetrol S.A., created by the authorization of Law 165 of 1948, through Decree 0030 of 1951, a

CERTIFICATION

Exhibit 12.2 CERTIFICATION I, Alfonso Camilo Barco Muñoz, certify that: 1. I have reviewed this annual report on Form 20-F of Ecopetrol S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with re

Convenience translation to English. Original in Spanish

Exhibit 4.39 Convenience translation to English. Original in Spanish COMPENSATION DIFFERENTIALS PAYMENT AGREEMENT ENTERED INTO ON APRIL 1, 2026, BY AND AMONG THE NATION, ECOPETROL S.A. AND REFINERÍA DE CARTAGENA S.A.S. GERMÁN ÁVILA PLAZAS, identified with Colombian citizenship card No. 19,437,985 issued in Bogotá D.C., acting in his capacity as Minister of Finance and Public Credit, pursuant to De

CERTIFICATION

Exhibit 12.1 CERTIFICATION I, Juan Carlos Hurtado Parra, certify that: 1. I have reviewed this annual report on Form 20-F of Ecopetrol S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with res

U.S. $530,000,000 LOAN AGREEMENT dated as of November 25, 2025 by and among ECOPETROL S.A. as Borrower, THE LENDERS PARTY HERETO, BANCO LATINOAMERICANO DE COMERCIO EXTERIOR, S.A. as Administrative Agent BANCO LATINOAMERICANO DE COMERCIO EXTERIOR, S.A

Exhibit 4.33 Execution Version U.S. $530,000,000 LOAN AGREEMENT dated as of November 25, 2025 by and among ECOPETROL S.A. as Borrower, THE LENDERS PARTY HERETO, BANCO LATINOAMERICANO DE COMERCIO EXTERIOR, S.A. as Administrative Agent and BANCO LATINOAMERICANO DE COMERCIO EXTERIOR, S.A. and SUMITOMO MITSUI BANKING CORPORATION, as Joint Lead Arrangers and Joint Bookrunners TABLE OF CONTENTS Page SEC

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 2.3 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 CONTENTS American Depositary Shares 2 8.625% Notes due January 19, 2029 (“2029 Notes”) 10 6.875% Notes due April 29, 2030 (“2030 Notes”) 28 4.625% Notes due November 2, 2031 (“2031 Notes”) 46 7.750% Notes due February 1, 2032 (“2032 Notes”) 64 8.875% Notes due January 13,

BYLAWS OF ECOPETROL S.A. CHAPTER I: LEGAL NATURE, CORPORATE NAME, INCORPORATION, DOMICILE AND DURATION

Exhibit 1.1 BYLAWS OF ECOPETROL S.A. CHAPTER I: LEGAL NATURE, CORPORATE NAME, INCORPORATION, DOMICILE AND DURATION ARTICLE ONE. LEGAL NATURE – CORPORATE NAME.- ECOPETROL S.A. is a corporation, of commercial nature, comprised of public and private shareholders, that carries out its corporate purpose in a competitive manner with private entities. Hereinafter and for the purposes of this document, it

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

FIRST AMENDMENT TO THE LOAN AGREEMENT

Exhibit 4.34 Execution Version FIRST AMENDMENT TO THE LOAN AGREEMENT This First Amendment, dated as of December 30, 2025 (this “Amendment”), to that certain Loan Agreement, dated as of May 15, 2023, by and among Ecopetrol S.A., as borrower (the “Borrower”), MUFG Bank, Ltd., as administrative agent (the “Administrative Agent”), and the lenders party thereto from time to time (the “Lenders”) (the “L

Convenience translation to English. Original in Spanish FRAMEWORK CONTRACT FOR THE COMMERCIALIZATION OF ENERGY ECOPETROL S.A. GENERADORA Y COMERCIALIZADORA DE ENERGÍA DEL CARIBE S.A. E.S.P. – GECELCA BOGOTÁ, D.C., AUGUST 12, 2022

Exhibit 4.40 Convenience translation to English. Original in Spanish FRAMEWORK CONTRACT FOR THE COMMERCIALIZATION OF ENERGY Between ECOPETROL S.A. AND GENERADORA Y COMERCIALIZADORA DE ENERGÍA DEL CARIBE S.A. E.S.P. – GECELCA BOGOTÁ, D.C., AUGUST 12, 2022 Page 1 de 49 ECP-PUBLIC INFORMATION Convenience translation to English. Original in Spanish TABLE OF CONTENT CONSIDERATIONS 4 CLAUSES 5 CLAUSE 1

Ecopetrol announces the dates for the release of its first quarter 2026 earnings report and conference call

Ecopetrol announces the dates for the release of its first quarter 2026 earnings report and conference call Bogota D.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

ECP-INFORMACION PUBLICA Moody’s Downgrades Ecopetrol’s Global Credit Rating to Ba2 and Affirms Its Stand‑Alone Credit Profile at b1 Bogota D.C., April 23, 2026 Ecopetrol S.A (BVC: ECOPETROL; NYSE: EC) hereby informs that today, the credit rating agen

ECP-INFORMACION PUBLICA Moody’s Downgrades Ecopetrol’s Global Credit Rating to Ba2 and Affirms Its Stand‑Alone Credit Profile at b1 Bogota D.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Ecopetrol enters into an Agreement to acquire an equity stake in Brava Energia S.A. a company domiciled in Brazil

Ecopetrol enters into an Agreement to acquire an equity stake in Brava Energia S.A. a company domiciled in Brazil Bogota D.C., April 23, 2026 Ecopetrol S.A (BVC: ECOPETROL; NYSE: EC) hereby announces that on April 23, 2026, it entered into a Share Purchase Agreement with Jive, Yellowstone and Bloco Somah Printemps Quantum, which together constitute a group of significant shareholders holding appro

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Ecopetrol publishes its year-end periodic report for fiscal year 2025

Bogota D.C., April 21, 2026 Ecopetrol publishes its year-end periodic report for fiscal year 2025 Ecopetrol S.A (BVC: ECOPETROL; NYSE: EC) hereby announces that, in compliance with External Circulars No. 031 of 2021 and No. 012 of 2022 issued by the Superintendence of Finance of Colombia, it has published its Year-End Periodic Report for fiscal year 2025, which is included as part of the 2025 Inte

EX-99.1

Bogota D.C., April 8, 2026 Standard & Poor’s Global Ratings (S&P) Affirms Ecopetrol’s Stand‑Alone Credit Profile and Revises Its Global Credit Rating Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol”) informs that S&P Global Ratings, in its report dated April 8, 2026, revised Ecopetrol’s global credit rating from BB to BB-, with a stable outlook, in line with the adjustment made to the sovere

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Decisions of Ecopetrol’s Board of Directors

Decisions of Ecopetrol’s Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol”) announces that its Board of Directors, at a meeting held on April 6, 2026, approved an unpaid leave of absence requested by the Company’s President, Mr. Ricardo Roa Barragán. This unpaid leave of absence was authorized in accordance with Section 3 of Article 23 of the Company’s Bylaws and the Decisi

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Ecopetrol S.A. obtains authorization to carry out a debt management transaction of up to USD 1.25 billion

Ecopetrol S.A. obtains authorization to carry out a debt management transaction of up to USD 1.25 billion Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” and together with its subsidiaries, the “Ecopetrol Group”) hereby reports that, as part of its comprehensive debt management strategy, through Resolution No. 0666 dated April 1, 2026, the Ministry of Finance and Public Credit (“MHCP”) auth

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2026 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

Ecopetrol S.A. and Refinería de Cartagena S.A.S. Execute Agreement with the Nation for the Outstanding Payment of the FEPC Corresponding to the First Quarter of 2025

Ecopetrol S.A. and Refinería de Cartagena S.A.S. Execute Agreement with the Nation for the Outstanding Payment of the FEPC Corresponding to the First Quarter of 2025 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that: 1. Through Resolutions 00368 and 00369 dated March 31, 2026, the Hydrocarbons Directorate of the Ministry of Mines and Energy ordered the payment of the outstanding balance of

Decisions Adopted by the Shareholders in Ordinary General Meeting held on March 27, 2026

Decisions Adopted by the Shareholders in Ordinary General Meeting held on March 27, 2026 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

Statement by Ecopetrol’s Board of Directors

Statement by Ecopetrol’s Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that its Board of Directors concluded a meeting on March 24, 2026, during which, among other matters, the following issues were discussed: i) The communication sent by the UNIÓN SINDICAL OBRERA (“USO”) titled “Request for Dr. Ricardo Roa Barragán to Be Removed from His Position as President of Ecopetrol

Statement on Decision by the Attorney General's Office

Statement on Decision by the Attorney General's Office Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) reports that the Attorney General's Office, as part of an investigation into Ecopetrol’s President Ricardo Roa, has decided to bring charges against him for his alleged responsibility for the crime of influence peddling by a public servant. This proceeding was held before the 35th Court of Guarantees o

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

Ecopetrol publishes chapter on social and environmental issues, including climate, for 2025

Ecopetrol publishes chapter on social and environmental issues, including climate, for 2025 Ecopetrol S.

In 2025, Ecopetrol S.A. and its subsidiaries (the “Ecopetrol Group,” and Ecopetrol S.A. on a standalone basis, “Ecopetrol” or the “Company”) the Ecopetrol Group generated an EBITDA of COP 46.7 trillion, a net income of COP 9.0 trillion and an EBITDA

At the Ecopetrol Group, we work with the purpose of maintaining our operational strength and financial discipline as the pillars that sustain our capacity to fulfill the commitments set.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2026 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

Ecopetrol’s 2025 Earnings Distribution Proposal

Ecopetrol’s 2025 Earnings Distribution Proposal Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) announces that, the Company’s proposal for the distribution of 2025 earnings, which has been approved by its board of directors, and is intended to be submitted for the consideration of the General Shareholders’ Meeting expected to be held on March 26, 2026. 2025 EARNINGS DISTRI

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

Ecopetrol publishes measures aimed at ensuring the adequate representation of Shareholders at the Annual General Meeting to be held on March 27th, 2026

Ecopetrol publishes measures aimed at ensuring the adequate representation of Shareholders at the Annual General Meeting to be held on March 27th, 2026 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol”) hereby summons all shareholders to the General Shareholders’ Meeting (the “Meeting”) to be held on Friday, March 27, 2026, starting at 9:00 a.m., at Centro Internacional de Negocios y Exposi

The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol”) hereby summons all shareholders to the General Shareholders’ Meeting (the “Meeting”) to be held on Friday, March 27, 2026, starting at 9:00 a.m., at Centro Internacional de Negocios y Exposiciones (Corferias), located on Carrera 37 No. 24 - 67 in Bogota, D.C. The meeting is planned to be held in person and also is also planned to be strea

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

Ecopetrol S.A. Board of Directors Announcement

Ecopetrol S.A. Board of Directors Announcement Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) informs that the board of directors, in its session held on February 18 and 19, 2026, elected Ángela María Robledo Gómez and Hildebrando Vélez Galeano as chairwoman and vice chairman of the board of directors, respectively. The board of directors also appointed members for its su

Ecopetrol records 1,944 billion barrels of oil equivalent in proven reserves at the close of 2025, replacing 121% of production, with the highest contribution in the last four years

Ecopetrol records 1,944 billion barrels of oil equivalent in proven reserves at the close of 2025, replacing 121% of production, with the highest contribution in the last four years · Proven reserves totaled 300 mmboe, the highest value in the last four years.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

Ecopetrol announces the dates for the presentation of its fourth quarter and full-year 2025 results report and conference call

Ecopetrol announces the dates for the presentation of its fourth quarter and full-year 2025 results report and conference call Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2026 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

Resolutions Adopted by the Extraordinary Shareholders' Meeting of February 5th 2026

Resolutions Adopted by the Extraordinary Shareholders' Meeting of February 5th 2026 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Ecopetrol S.A. submitted the Corporate Governance Best Practices Implementation Report – Código País for 2025

Ecopetrol S.A. submitted the Corporate Governance Best Practices Implementation Report – Código País for 2025 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol”) announces that it submitted its Corporate Governance Best Practices Implementation Report – Código País (the “Report”) to the Financial Superintendence of Colombia today. The report outlines the corporate governance practices adopted

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Update on the VAT proceedings related to fuel imports

Update on the VAT proceedings related to fuel imports Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (the “Company” or “Ecopetrol”) reports that on January 22, 2026, the Colombian National Tax and Customs Authority (“DIAN”) notified Ecopetrol of Resolution 000571 (the “Resolution”), in accordance with its interpretation and customs procedures. By means of this Resolution, DIAN confirmed its prior decis

Ecopetrol publishes measures aimed at ensuring the adequate representation of Shareholders at the Extraordinary Meeting to be held on February 5th, 2026

Ecopetrol publishes measures aimed at ensuring the adequate representation of Shareholders at the Extraordinary Meeting to be held on February 5th, 2026 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Recommendations

The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol” or the “Company”) hereby summons all shareholders to the extraordinary General Shareholders’ Meeting to be held on February 5, 2026, starting at 8:00 a.m., at Ecopetrol´s main building located on Carrera 13 No. 36 - 24 in Bogota, D.C The planned agenda for the meeting is the following: 1. Safety guidelines 2. Quorum verification 3. Opening

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Ecopetrol Announces Hydrocarbon-Producing Departments’ Nominee to the Board of Directors on Slate Proposed by Government of Colombia

Ecopetrol Announces Hydrocarbon-Producing Departments’ Nominee to the Board of Directors on Slate Proposed by Government of Colombia Ecopetrol S.

Ecopetrol announces the formalization of the slate of candidates for the Board of Directors

Ecopetrol announces the formalization of the slate of candidates for the Board of Directors Ecopetrol S.

Ecopetrol Announces Minority Shareholders’ Nominee to the Board of Directors on Slate Proposed by Government of Colombia

Ecopetrol Announces Minority Shareholders’ Nominee to the Board of Directors on Slate Proposed by Government of Colombia Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Ecopetrol Announces Employee Elected to the Board of Directors on Slate Proposed by Government of Colombia as a Result of Voting Process

Ecopetrol Announces Employee Elected to the Board of Directors on Slate Proposed by Government of Colombia as a Result of Voting Process Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

Renegotiations of Collective Bargaining Agreement

Renegotiations of Collective Bargaining Agreement Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) informs that, in addition to the information published on December 24th 2025 were it was stated that Unión Sindical Obrera (USO) had filled a complaint with the Ministry of Labor of the Collective Bargaining Agreement, the labor organizations Adeco, Sindispetrol, Asopetrogas,

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January, 2026 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 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

Renegotiations of Collective Bargaining Agreement with Unión Sindical Obrera

Renegotiations of Collective Bargaining Agreement with Unión Sindical Obrera Ecopetrol S.

Ecopetrol Assumes 100% Interest in Offshore Blocks in the Southern Caribbean

Ecopetrol Assumes 100% Interest in Offshore Blocks in the Southern Caribbean Ecopetrol S.

Fitch Ratings Downgrades Ecopetrol’s Global Rating Following Sovereign Cut

Fitch Ratings Downgrades Ecopetrol’s Global Rating Following Sovereign Cut Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 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

Ecopetrol Comments on Recent News Reports on a Potential Transaction

Ecopetrol Comments on Recent News Reports on a Potential Transaction Given recent news reports about a potential acquisition in Brazil by Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 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

Decisions of the Board of Directors of Ecopetrol S.A.

Decisions of the Board of Directors of Ecopetrol S.A. Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that, at its board of directors meeting held on December 10 and 11, 2025, and following the previously disclosed resignations of directors Mónica de Greiff Lindo and Guillermo García Realpe, its board of directors approved the new composition of its supporting committees as follows: AUDIT AND

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Ecopetrol S.A. Negotiates Acquisition of a Portfolio of up to 88.2 MWp in Solar Photovoltaic Projects in Colombia

Ecopetrol S.A. Negotiates Acquisition of a Portfolio of up to 88.2 MWp in Solar Photovoltaic Projects in Colombia Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” and together with its subsidiaries, the “Ecopetrol Group”) announces that on November 28, 2025, it successfully concluded negotiations with Grenergy Renovables S.A. for the potential acquisition by Ecopetrol of seven (7) companies

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Ecopetrol Group to Invest Between COP 22 and 27 Trillion in 2026

Ecopetrol Group to Invest Between COP 22 and 27 Trillion in 2026 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” and together with its subsidiaries, the “Ecopetrol Group”) announces that its board of directors has approved the Ecopetrol Group’s Annual Investment Plan for 2026 (the “2026 Annual Investment Plan”), with an amount ranging between COP 22 and 27 trillion[1]. This plan maintains i

Updates from Ecopetrol S.A.’s Board of Directors

Updates from Ecopetrol S.A.’s Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company” and together with its subsidiaries, the “Ecopetrol Group”) announces that, during its meeting held on November 27, 2025, the board of directors elected Ángela María Robledo Gómez as Chairwoman and Álvaro Torres Macías as Vice Chairman of the Board. Additionally, Ecopetrol report

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Ecopetrol S.A. Obtains Authorization to Enter into a Loan Agreement with International Banks for up to USD 530 Million

Ecopetrol S.A. Obtains Authorization to Enter into a Loan Agreement with International Banks for up to USD 530 Million Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company” and together with its subsidiaries, the “Ecopetrol Group”) announces that, through Resolution 3047 dated November 21, 2025 (the “Resolution”), the Ministry of Finance and Public Credit (“MHCP”) authorized the

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Decision of the Board of Directors of Ecopetrol S.A.

Decision of the Board of Directors of Ecopetrol S.A. Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that the Board of Directors appointed Mr. Juan Carlos Hurtado Parra as Alternate Legal and Commercial Representative of Ecopetrol S.A. on November 18, 2025. Bogota D.C., November 18, 2025 - Ecopetrol is the largest company in Colombia and one of the main integrated energy companies in the Ameri

Stable operations in the refining segment, control of operating expenditures (“opex”), and improved results in Interconexión Eléctrica S.A. (“ISA” and together with its subsidiaries) translated into 42% recovery in net profit compared to 2Q 2025, ami

During the first-nine-months of the year, we focused our efforts on strengthening the operation of our traditional business, maintaining rigorous capital discipline, driving sustainable value through the consolidation of strategic projects that enable the country’s energy transition and reinforcing energy security.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Ecopetrol S.A. Announces the Acquisition of a Solar Project Portfolio in Colombia

Ecopetrol S.A. Announces the Acquisition of a Solar Project Portfolio in Colombia Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that it has successfully closed the transaction with Statkraft European Wind and Solar Holding AS (“Statkraft”) on November 13, 2025 for the acquisition of one company engaged in the development and operation of Statkraft’s portfolio in Colombia, and six special pur

General Shareholders’ Meeting Approves Bylaws Amendment

General Shareholders’ Meeting Approves Bylaws Amendment Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that the Ecopetrol’s shareholders approved the amendment to its bylaws during the extraordinary General Shareholders’ Meeting held on November 11, 2025 at 8:35 a.m., which was duly convened in compliance with the applicable legal and statutory requirements, in accordance with Article 187, pa

Ecopetrol Announces Changes in Senior Management

Ecopetrol Announces Changes in Senior Management Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that the Board of Directors appointed the following leadership positions , during its meeting on November 11, 2025, all of which will be effective as of November 16: Juan Carlos Hurtado Parra as Executive Vice President of Hydrocarbons. Mr. Hurtado, who previously served as Vice President of Explor

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

Ecopetrol Group Releases Its First Financial Sustainability Report, Incorporating Reference Elements from the International Sustainability Standards Board (ISSB) Framework

Ecopetrol Group Releases Its First Financial Sustainability Report, Incorporating Reference Elements from the International Sustainability Standards Board (ISSB) Framework Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

Fitch Ratings Affirms Ecopetrol’s National and International Credit Ratings

Fitch Ratings Affirms Ecopetrol’s National and International Credit Ratings Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

Ecopetrol announces the dates for the publication of its third quarter of 2025 earnings report and conference call

Ecopetrol announces the dates for the publication of its third quarter of 2025 earnings report and conference call Ecopetrol S.

Ecopetrol S.A. has obtained authorization to execute a loan with local financial institutions for COP 700,000 million, under a committed credit line structure

Ecopetrol S.A. has obtained authorization to execute a loan with local financial institutions for COP 700,000 million, under a committed credit line structure Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) hereby informs the market that, through Resolution 2691 dated October 21, 2025 (the “Resolution”), the Ministry of Finance and Public Credit (“MHCP”) authorized the Com

The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol”) hereby summons all Shareholders to the extraordinary Assembly of the General Shareholders’ Meeting to be held on Tuesday, November 11th, 2025, starting at 8:00 a.m., at the Auditorium of the

The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol”) hereby summons all Shareholders to the extraordinary Assembly of the General Shareholders’ Meeting to be held on Tuesday, November 11th, 2025, starting at 8:00 a.m., at the Auditorium of the Centro Internacional de Negocios y Exposiciones (Corferias), located on Carrera 37 No. 24 - 67 in Bogota, D.C. The meeting will be held in person and

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

General Shareholders’ Meeting of Ecopetrol S.A.

General Shareholders’ Meeting of Ecopetrol S.A. Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) announces that, The Chief Executive Officer of Ecopetrol S.A. (“Ecopetrol”) hereby summons all Shareholders to the extraordinary Assembly of the General Shareholders’ Meeting to be held on Tuesday, November 11th, 2025, starting at 8:00 a.m., at the Auditorium of the Centro Inter

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 Commission File Number 001-34

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2025 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

Ecopetrol S.A. Board of Directors Announcements

Ecopetrol S.A. Board of Directors Announcements Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) announces that, through a letter dated October 14, 2025, Dr. Mónica De Greiff Lindo communicated her intention to resign from her position as an independent member of the board of directors. The resignation becomes effective as of today. Ecopetrol expects to notify its majority

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOPETROL S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOPETROL S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) REPUBLIC OF COLOMBIA (State or other jurisdiction of incorporation or organization) 001-34175 (Commission File Number) Not Applicable (IRS Employer Identification No.) Carrera 13 No. 36 – 24 BOGOTA – COLOMBIA (Address of

EX-2.01.SCH

99900 - Disclosure - Standard And Custom Axis Domain Defaults link:presentationLink link:calculationLink link:definitionLink This member stands for Upstream.

Subsidiary /Vicepresidency

EXHIBIT 2.01 PAYMENTS BY SEGMENT Upstream: Subsidiary /Vicepresidency Country of jurisdiction Project / Field Resource (Oil / Natural Gas) Method of Extraction (if applicable) Concept Government receiving payment Type of Payment Currency of payment Value in USD Millions (Exchange rate: COP 4,071/ USD 1.00) Fiscal Year Upstream vice-presidency Colombia CPO-9 Oil Conventional Royalties Colombia Cash

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September, 2025 Commission File Number 001-

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September, 2025 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 (Jurisdictio

Ecopetrol comments on information published in the media

Ecopetrol comments on information published in the media Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) hereby informs the market that, in connection with certain news recently disseminated by national media outlets, the Company entered into a confidentiality agreement with Canadian gas producer Canacol Energy during the final days of August of the current year. The purpose of this agreement is to faci

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2025 Commission File Number 001-341

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2025 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 o

Decisions of the Board of Directors of Ecopetrol S.A.

Decisions of the Board of Directors of Ecopetrol S.A. Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that during the Board of Directors meeting held on August 19, 2025, Dr. Guillermo García Realpe voluntarily resigned from his role as Chairman of the Board for personal reasons. However, he will continue to serve as a member of the Board and as Chair of the Compensation, Nomination, and Cultur

In the first half of 2025, the Ecopetrol Group generated net income of COP 4.9 trillion, EBITDA of COP 24.4 trillion, with an EBITDA margin of 40%. The results highlight: i) the increase in crude oil production leveraged by the contribution of Permia

During the first half of 2025, we maintained a solid operating performance, demonstrating our ability to generate sustainable value and respond in advance and effectively to challenging market conditions such as the decline in Brent benchmark crude prices, external environment events, and geopolitical tensions.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2025 Commission File Number 001-341

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2025 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 o

Ecopetrol announces the dates for the publication of its second quarter of 2025 earnings report and conference call

Ecopetrol announces the dates for the publication of its second quarter of 2025 earnings report and conference call Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 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

Ecopetrol Announces Changes in Senior Management

Ecopetrol Announces Changes in Senior Management Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” and together with its subsidiaries, the “Ecopetrol Group”) announces that in its session on July 25, 2025, the board of directors approved the following appointments: · Sergio Andrés Moreno Acevedo has been appointed Corporate Vice President of Science, Technology and Innovation, effective July

Ecopetrol S.A. acquires Wind Autogeneración S.A.S., owner of the Windpeshi renewable energy wind project, located in La Guajira

Ecopetrol S.A. acquires Wind Autogeneración S.A.S., owner of the Windpeshi renewable energy wind project, located in La Guajira Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company” or “Ecopetrol” and together with its subsidiaries, the “Ecopetrol Group”) has completed the acquisition of 100% of the shares of Wind Autogeneración S.A.S., from Enel S.A.S. The transaction was approved by Ecopetrol’

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 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

Ongoing Customs Adjustment Procedure Initiated by the Colombian Tax and Customs Authority

Ongoing Customs Adjustment Procedure Initiated by the Colombian Tax and Customs Authority Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 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

Ecopetrol S.A. obtains authorization from the Financial Superintendency of Colombia to amend its Local Public Bond and Commercial Paper Issuance and Placement Program

Ecopetrol S.A. obtains authorization from the Financial Superintendency of Colombia to amend its Local Public Bond and Commercial Paper Issuance and Placement Program Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company” or “Ecopetrol”) announces that the Financial Superintendency of Colombia (SFC), through Resolution 1139 dated June 11, 20251, authorized an amendment to the prospectus for the i

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2025 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

Moody’s Affirms Ecopetrol’s Global and Standalone Credit Ratings

Moody’s Affirms Ecopetrol’s Global and Standalone Credit Ratings Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (the “Company” or “Ecopetrol”) announces that the credit rating agency Moody’s has affirmed the Company’s global credit rating at Ba1 with a stable outlook. The agency also confirmed Ecopetrol’s standalone rating at b1. Moody’s stated that the Ba1 global rating reflects Ecopetrol’s position a

S&P Global Ratings affirms Ecopetrol’s Stand-Alone Credit Profile (SACP) while adjusting its global credit rating

EX-99.1 2 ex99-1.htm EX-99.1 S&P Global Ratings affirms Ecopetrol’s Stand-Alone Credit Profile (SACP) while adjusting its global credit rating Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company”) informs that on June 27, 2025, the credit rating agency S&P Global Ratings downgraded Ecopetrol’s global credit rating from BB+ to BB and maintained the negative outlook. This action is aligned with t

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

6-K 1 ec202506276k1.htm 6-K 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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

Continuation of the customs adjustment process initiated by the Tax Authority

Continuation of the customs adjustment process initiated by the Tax Authority Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

Ecopetrol's Change of Auditors

Ecopetrol's Change of Auditors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company”) informs that it is furnishing this current report on Form 6-K to report that Ernst & Young Audit S.A.S. (the “Former Auditors”) concluded its nine-year engagement as the Company’s auditor and that the Company, pursuant to its rotation policy, has appointed Deloitte & Touche S.A.S. (the “Successor Auditors”) as

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

S&P maintains Ecopetrol's global credit rating at BB+

S&P maintains Ecopetrol's global credit rating at BB+ Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company”) informs that S&P Global Ratings maintained the Company's global credit rating at BB+ as well as its negative outlook, as reported today, June 3, 2025. Additionally, the agency lowered the Company's Stand Alone Credit Profile (SACP) rating from bbb- to bb+. S&P mentioned that lower oil pri

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2025 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

Ecopetrol Announces Changes in Senior Management

Ecopetrol Announces Changes in Senior Management Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that the Board of Directors appointed Rodolfo Mario García Paredes as Acting Corporate Compliance Director and Interim Anti-Money Laundering Compliance Officer at its June 3, 2025 meeting, effective as of June 4, 2025. Mr. García Paredes, who has most recently served as Legal Manager of Hydrocarbon

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 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 i

Ecopetrol S.A. signs an agreement to acquire a portfolio of up to 1,300 megawats of solar and wind energy projects in Colombia

Ecopetrol S.A. signs an agreement to acquire a portfolio of up to 1,300 megawats of solar and wind energy projects in Colombia Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that it executed an asset purchase purchase agreement with Statkraft European Wind and Solar Holding, AS (“Statkraft”) on May 20, 2025, for the potential acquisition of its portfolio in Colombia. This portfolio includes o

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 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 i

The Ecopetrol Business Group generated net profit of COP 3.1 trillion in 1Q25, EBITDA of COP 13.3 trillion, and EBITDA margin of 42%. The quarterly results show an outstandng recovery in production growth, planned maintenance in the Refining segment

EX-99.1 2 ex99-1.htm EX-99.1 We started 2025 with results supported by our operational and financial strength. We are facing an environment affected by exogenous variables, geopolitical tensions and mainly with a strong impact from the fall in the prices of Brent benchmark crude oil. The Ecopetrol Group continues to demonstrate its operational resilience, supported by its diversification of market

Ecopetrol’s Position on DIAN Concept

Ecopetrol’s Position on DIAN Concept Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that Ecopetrol informs that the National Tax and Customs Directorate (“DIAN”) issued Concept No. 100202208-2305 on December 19, 2024, stating that, according to its interpretation, the importation and nationalization of gasoline and diesel fuel (ACPM) are subject to the Value Added Tax (VAT) at the general rat

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 Commission File Number 001-34175

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 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 i

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

Ecopetrol S.A. obtains authorization to execute a loan agreement with an international bank for five hundred million dollars

Ecopetrol S.A. obtains authorization to execute a loan agreement with an international bank for five hundred million dollars Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that the Ministry of Finance and Public Credit (“MHCP”) authorized the company to execute a loan agreement of up to USD 500 million with [Banco Santander, S.A.], by means of Resolution 0910 dated April 25, 2025. The term of

Ecopetrol is evaluating the strategy to ensure the continuity of gas projects in the Southern Caribbean

Ecopetrol is evaluating the strategy to ensure the continuity of gas projects in the Southern Caribbean Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

Ecopetrol S.A. Board of Directors Announcement

Ecopetrol S.A. Board of Directors Announcement Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) informs that the Board of Directors, in its session on April 22 and 23, 2025, decided that Guillermo García Realpe and Mónica de Greiff Lindo will continue in their roles as Chairperson and Vice-Chairperson of the Board of Directors, respectively. The Board of Directors also approved the formation of its suppo

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

Ecopetrol Announces New Appointments in Senior Management

Ecopetrol Announces New Appointments in Senior Management Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces that in its session on April 23, 2025, the following appointments were approved: · Julián Fernando Lemos as Corporate Vice President of Strategy and New Business, effective May 1, 2025. Julián has been serving as Acting Vice President since September 16, 2024. He holds a degree in Mechanic

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

Ecopetrol files its Form 20-F for the Fiscal Year 2024

Ecopetrol files its Form 20-F for the Fiscal Year 2024 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) informs the filing of its annual report under Form 20-F for the fiscal year ended December 31, 2024, with the U.S. Securities and Exchange Commission (the “SEC”). With the filing of its annual report under Form 20-F, the Company complies with its reporting obligations with the SEC, the New York Stock E

HOUSTON, TEXAS 77002-5294

Exhibit 99.1 TBPELS REGISTERED ENGINEERING FIRM F-1580 1100 LOUISIANA SUITE 4600 HOUSTON, TEXAS 77002-5294 TELEPHONE (713) 651-9191 February 18, 2025 Ecopetrol Cra. 13 No. 36-24 Edificio Principal, Piso 7 Bogotá, D.C., Colombia Ladies and Gentlemen: At the request of Ecopetrol, Ryder Scott Company, L.P. (Ryder Scott) has prepared an estimate of the proved reserves attributable to certain interests

Ecopetrol announces the dates for the publication of its first quarter of 2025 earnings report and conference call

Ecopetrol announces the dates for the publication of its first quarter of 2025 earnings report and conference call Ecopetrol S.

CERTIFICATION

Exhibit 12.2 CERTIFICATION I, Alfonso Camilo Barco Muñoz, certify that: 1. I have reviewed this annual report on Form 20-F of Ecopetrol S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with re

DeGolyer and MacNaughton 5001 Spring Valley Road Suite 800 East Dallas, Texas 75244 February 21, 2025

Exhibit 99.2 DeGolyer and MacNaughton 5001 Spring Valley Road Suite 800 East Dallas, Texas 75244 February 21, 2025 Board of Directors Ecopetrol S.A. Carrera 13 No. 36-24 Bogota, D.C. Colombia Ladies and Gentlemen: Pursuant to your request, this report of third party presents an independent evaluation, as of December 31, 2024, of the extent of the estimated net proved hydrocarbon reserves of certai

LOAN AGREEMENT ECOPETROL S.A., as Borrower, THE LENDERS PARTY HERETO, BANCO BILBAO VIZCAYA ARGENTARIA, S.A. NEW YORK BRANCH, as Administrative Agent, THE BANK OF NOVA SCOTIA, BBVA SECURITIES INC., BANK OF AMERICA, N.A., JPMORGAN CHASE BANK, N.A., ITA

Exhibit 4.31 EXECUTION VERSION LOAN AGREEMENT among ECOPETROL S.A., as Borrower, THE LENDERS PARTY HERETO, and BANCO BILBAO VIZCAYA ARGENTARIA, S.A. NEW YORK BRANCH, as Administrative Agent, and THE BANK OF NOVA SCOTIA, BBVA SECURITIES INC., BANK OF AMERICA, N.A., JPMORGAN CHASE BANK, N.A., ITAU CHILE NEW YORK BRANCH AND STANDARD CHARTERED BANK (HONG KONG) LIMITED, as Joint Lead Arrangers and Join

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Exhibit 13.1 Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Ecopetrol S.A. (the “Company”), does hereby cert

AMENDMENT NO. 25 TO THE BICENTENARIO TRANSPORT AGREEMENT Cenit Transporte y Logística de Hidrocarburos S.A.S. Ecopetrol S.A. Bogotá D.C., June 21, 2024

Exhibit 4.30 AMENDMENT NO. 25 TO THE BICENTENARIO TRANSPORT AGREEMENT Between Cenit Transporte y Logística de Hidrocarburos S.A.S. and Ecopetrol S.A. Bogotá D.C., June 21, 2024 AMENDMENT NO. 25 TO THE BICENTENARIO TRANSPORT AGREEMENT This Amendment No. 25 (hereinafter, the “Amendment”) to the Bicentenario Transport Agreement is entered into by the following parties: 1. CENIT TRANSPORTE Y LOGÍSTICA

AMENDMENT No. 3 TO THE TRANSPORT AGREEMENT ENTERED INTO BETWEEN OLEODUCTO CENTRAL S.A. THE SHIPPER AMENDMENT No. 3 TO THE TRANSPORT AGREEMENT

Exhibit 4.25 AMENDMENT No. 3 TO THE TRANSPORT AGREEMENT ENTERED INTO BETWEEN OLEODUCTO CENTRAL S.A. OCENSA AND THE SHIPPER AMENDMENT No. 3 TO THE TRANSPORT AGREEMENT Between the undersigned OLEODUCTO CENTRAL S.A., a company legally incorporated and existing pursuant to the laws of the Republic of Colombia, with its main domicile in the city of Bogotá D.C., represented in this act by JOSE ALEJANDRO

AMENDMENT No. 24 TO THE BICENTENARIO TRANSPORT AGREEMENT Cenit Transporte y Logística de Hidrocarburos S.A.S. ECOPETROL S.A. BOGOTA D.C., MAY 30, 2024

Exhibit 4.29 AMENDMENT No. 24 TO THE BICENTENARIO TRANSPORT AGREEMENT Between Cenit Transporte y Logística de Hidrocarburos S.A.S. and ECOPETROL S.A. BOGOTA D.C., MAY 30, 2024 AMENDMENT No. 24 TO THE BICENTENARIO TRANSPORT AGREEMENT This Amendment No. 24 (hereinafter, the “Amendment”) to the Bicentenario Transport Agreement is entered into by the following parties: 1. CENIT TRANSPORTE Y LOGÍSTICA

U.S. $250,000,000 LOAN AGREEMENT dated as of September 30, 2024 by and between ECOPETROL S.A. as Borrower, Sumitomo Mitsui Banking Corporation, as Lender

Exhibit 4.32 EXECUTION VERSION U.S. $250,000,000 LOAN AGREEMENT dated as of September 30, 2024 by and between ECOPETROL S.A. as Borrower, and Sumitomo Mitsui Banking Corporation, as Lender TABLE OF CONTENTS Page Section 1 DEFINITIONS AND PRINCIPLES OF CONSTRUCTION 1.01. Defined Terms 1 1.02. Principles of Construction 19 1.03. Rates 20 Section 2 THE LOAN 2.01. Commitment 20 2.02. Mechanics for Req

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

Exhibit 4.37

Exhibit 4.37

Ecopetrol Publishes Periodic Year-End Report for 2024

Ecopetrol Publishes Periodic Year-End Report for 2024 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) has published the periodic year-end report for 2024, which contains sections related to company practices, policies, processes and indicators in connection with social and environmental matters, including climate issues. This report was published pursuant to External Circulars 012 of 2022 and 031 of 202

PRODUCTS SERVICE FRAMEWORK AGREEMENT AMENDMENT NO. 22

Exhibit 4.28 PRODUCTS SERVICE FRAMEWORK AGREEMENT AMENDMENT NO. 22 Amendment No. 22 to the Products Service Framework Agreement Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. Bogota, D.C. April 9, 2024 PRODUCTS SERVICE FRAMEWORK AGREEMENT AMENDMENT NO. 22 Amendment No. 22 to Products Service Framework Agreement This Amendment No. 22 to the Products Servicer Framewo

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

POLICY ON USE OF PRIVILEGED INFORMATION OF ECOPETROL S.A.

Exhibit 7.2 POLICY ON USE OF PRIVILEGED INFORMATION OF ECOPETROL S.A. RELATIONSHIPS WITH INVESTORS DEPARTMENT CODE Prepared Version: GFI-POL-001 25/03/2025 3 1. OBJECTIVE This Policy is intended for overseeing compliance with applicable norms by Directors and Officials of Ecopetrol S.A. (“Ecopetrol” or the “Company”) who, in performance of their duties, have access to privileged information and ne

Exhibit 4.36

Exhibit 4.36

Exhibit 4.38

Exhibit 4.38

AMENDMENT No. 3 TRANSPORT AGREEMENT ENTERED INTO BETWEEN OLEODUCTO CENTRAL S.A. THE SHIPPER

Exhibit 4.26 AMENDMENT No. 3 TRANSPORT AGREEMENT ENTERED INTO BETWEEN OLEODUCTO CENTRAL S.A. OCENSA AND THE SHIPPER AMENDMENT No. 3 TO THE TRANSPORT AGREEMENT Between the undersigned OLEODUCTO CENTRAL S.A., a company legally incorporated and existing pursuant to the laws of the Republic of Colombia, with its main domicile in the city of Bogotá D.C., represented in this act by JOSE ALEJANDRO ALZATE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

AMENDMENT NO. 19 CRUDE OIL SERVICES FRAMEWORK AGREEMENT

Exhibit 4.27 AMENDMENT NO. 19 CRUDE OIL SERVICES FRAMEWORK AGREEMENT AMENDMENT NO. 19 CRUDE OIL SERVICES FRAMEWORK AGREEMENT Between CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. and ECOPETROL S.A. BOGOTÁ D.C., MAY 28, 2024 Page 1 of 6 AMENDMENT NO. 19 CRUDE OIL SERVICES FRAMEWORK AGREEMENT AMENDMENT NO. 19 TO THE CRUDE OIL SERVICES FRAMEWORK AGREEMENT This Amendment No. 19 (the “Amendment”

FIRST AMENDMENT TO THE LOAN AGREEMENT

Exhibit 4.33 Execution Version FIRST AMENDMENT TO THE LOAN AGREEMENT This First Amendment, dated as of October 4, 2024 (this “Amendment”), to that certain Loan Agreement, dated as of September 30, 2024, by and among Ecopetrol S.A., as borrower (the “Borrower”) and Sumitomo Mitsui Banking Corporation, as lender (the “Lender”). RECITALS: WHEREAS, the Borrower and the Lender are party to that certain

CERTIFICATION

Exhibit 12.1 CERTIFICATION I, Ricardo Roa Barragán, certify that: 1. I have reviewed this annual report on Form 20-F of Ecopetrol S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

SEC Proved Reserves Statement for Twenty-Two Fields in which Ecopetrol has an Interest, Colombia as of December 31, 2024

Reserves Statement of Certain Fields, Colombia as of December 31, 2024 Prepared for Ecopetrol S.

2 power to complete performance of the applicable obligations irrespective of the cost to the performing Party. 1.7 “Contract Month” shall mean a period of time commencing at 7:00 a.m. (Central Time) on the first day of a calendar month and ending at

Exhibit 4.35 EXECUTION COPY POLYMER GRADE PROPYLENE PURCHASE AND SALE AGREEMENT (SPLITTERS) This POLYMER GRADE PROPYLENE PURCHASE AND SALE AGREEMENT (SPLITTERS) dated as of May 1, 2021 (the “Effective Date”), is by and between ENTERPRISE PRODUCTS OPERATING LLC, a Texas limited liability company (“Enterprise”), and ESENTTIA S.A., a corporation organized and existing under the laws of Colombia (“Pur

Ecopetrol and AES Colombia sign an agreement to build the Jemeiwaa Ka’I wind cluster in La Guajira

Ecopetrol and AES Colombia sign an agreement to build the Jemeiwaa Ka’I wind cluster in La Guajira Ecopetrol signed an Investment Framework Agreement with AES Colombia & CIA SCA E.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

Decisions Adopted at the Shareholders’ Meeting of March 28, 2025

Decisions Adopted at the Shareholders’ Meeting of March 28, 2025 Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) informs that during the ordinary General Shareholders’ Meeting held on March 28, 2025, which was duly convened in accordance with the legal and statutory requirements applicable to the Company, the shareholders cast their votes on each of the below items on the agenda: · Approval of the agend

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

6-K 1 ec202503146k1.htm 6-K 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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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 Englis

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

Fitch Ratings maintains Ecopetrol's credit rating at BB+ and changes its outlook from stable to negative

Fitch Ratings maintains Ecopetrol's credit rating at BB+ and changes its outlook from stable to negative

Ecopetrol Announces Start Dates for the Market Maker program for its Shares on the Colombian Stock Exchange

Ecopetrol Announces Start Dates for the Market Maker program for its Shares on the Colombian Stock Exchange Ecopetrol S.

Ecopetrol publishes draft chapter on social and environmental issues, including climate, for the year 2024

Ecopetrol publishes draft chapter on social and environmental issues, including climate, for the year 2024 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

Minority Shareholders Nominate Candidate for Board of Directors

Minority Shareholders Nominate Candidate for Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) announces that, in accordance with the declaration of the Nation as the majority shareholder and following the established procedure therein, the representatives of the minority shareholders formally informed the Company that they had agreed to nominate Dr. Luis

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

Ecopetrol Announces Changes in the Board of Directors

Ecopetrol Announces Changes in the Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) announces the resignation of Dr. Edwin Palma Egea, which was submitted today to the Board of Directors and effective as of March 6, 2025. As a result, the Board of Directors appointed Ms. Angela María Robledo Gómez to replace Dr. Palma as a member of the Business Committee during its session on March 5,

Ecopetrol Announces Nomination of Candidate for Board of Directors

Ecopetrol Announces Nomination of Candidate for Board of Directors Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) announces that, in accordance with the declaration of the Nation, as the majority shareholder and following the established procedure therein, representatives of the hydrocarbon producing departments in which Ecopetrol operates have unanimously agreed to nomin

Ecopetrol’s 2024 Earnings Distribution Proposal

Ecopetrol’s 2024 Earnings Distribution Proposal Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC) (“Ecopetrol” or the “Company”) hereby announces the Company’s proposal for the distribution of 2024 earnings, which has been approved by its board of directors, and is intended to be submitted for the consideration of the General Shareholders’ Meeting that will be held on March 28, 2025: 2024 EARNINGS DISTRIB

The Ecopetrol Business Group achieved: i) the highest production level in the last 9 years at 746 kboed, ii) a record sales volume of 1,012 kboed, iii) high levels of capital investment amounting to USD 6.1 billion, iv) efficiencies incorporation by

2024 concluded with a robust operating performance that boosted our results across the company aligned with the goals set out at the beginning of the year.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 Commission File Number 001-3417

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2025 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

Ecopetrol Announces Agreement for Launching the Market Maker program for its Shares on the Colombian Stock Exchange

Ecopetrol Announces Agreement for Launching the Market Maker program for its Shares on the Colombian Stock Exchange Ecopetrol S.

Moody's Maintains Ecopetrol's Global Credit Rating at Ba1 with a Stable Outlook

Moody's Maintains Ecopetrol's Global Credit Rating at Ba1 with a Stable Outlook Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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

Ecopetrol publishes measures to guarantee the adequate representation of its Shareholders at the Ordinary General Shareholders' Meeting to be held on March 28, 2025

Ecopetrol publishes measures to guarantee the adequate representation of its Shareholders at the Ordinary General Shareholders' Meeting to be held on March 28, 2025 Ecopetrol S.

GENE R A L SHA REHOL D E R S ’ MEETING OF ECOPETROL S.A.

GENE R A L SHA REHOL D E R S ’ MEETING OF ECOPETROL S.A.

Ecopetrol Group replaced 104% of its production, doubling the 2023 incorporation of proven reserves.

Ecopetrol Group replaced 104% of its production, doubling the 2023 incorporation of proven reserves.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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

Ecopetrol announces the dates for the publication of its fourth quarter and full year 2024 earnings report and conference call

Ecopetrol announces the dates for the publication of its fourth quarter and full year 2024 earnings report and conference call Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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

Ecopetrol announces the completion of the transaction with Repsol to acquire 45% of its participation in Block CPO-09

Ecopetrol announces the completion of the transaction with Repsol to acquire 45% of its participation in Block CPO-09 Ecopetrol S.

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 Commission File Number 001-3

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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2025 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