Ecopetrol Announces the Second Convening of Bondholders' Meetings for Domestic Public Debt Bonds

Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC ) (the "Company" or "Ecopetrol") hereby announces that, as disclosed in the publication dated August 18, 2026, the first-call meetings of the holders of ordinary domestic public debt bonds issued in the 2010 and 2013 issuances (the "Bondholders") did not achieve the deliberative and decision-making quorums required under applicable regulations. Such meetings, previously convened by the legal representatives of the Bondholders, Alianza Valores Fiduciaria S.A. and Itaú Fiduciaria Colombia S.A. (the "Bondholders' Representatives"), were held on that date as scheduled. Accordingly, the Bondholders' Representatives have issued a second call for the aforementioned meetings, through a notice published in the newspaper La República, for the purpose of submitting to the consideration of the local Bondholders the proposed merger by absorption between Ecopetrol S.A. (as the surviving company) and Parque Solar Portón del Sol S.A.S. (as the absorbed company). This merger was approved by Ecopetrol's General Shareholders' Meeting on March 27, 2026, in accordance with Article 6.4.1.1.22 of Decree 2555 of 2010, under the following terms:

2010 Outstanding Bond Issuance Alianza Valores Fiduciaria S.A. hereby gives notice that it has convened a meeting of bondholders to be held on September 04, 2026, at 2:00 p.m. (Bogotá, D.C. time). Bondholders may attend the meeting either (i) in person, at Carrera 37 No. 24-24, Centro de Innovación Bogotá, Bogotá , D.C., Colombia, or (ii) virtually, via videoconference through the electronic platform of Colombia's Central Securities Depository (Depósito Centralizado de Valores de Colombia — Deceval S.A.). The meeting is being convened in accordance with Article 19 of Law 222 of 1995 and Decree 398 of 2020 of Colombia. The link for virtual attendance is set forth below: https://asambleadebonosecopetrol2010.azurewebsites.net The outstanding 2010 issuance, Series A, consisting of CPI-linked bonds denominated in Colombian pesos, has the following characteristics: Issuance Placement Date Maturity Date Term (Years) Coupon Rate Outstanding Amount (COP million) COC04CBVP023 Dec. 1, 2010 Dec. 1, 2040 30 CPI + 4.90% 284,300 Agenda Verification of quorum. Review and approval of the agenda. Delegation to the Bondholders' Representatives for the appointment of the Chairperson and Secretary of the meeting, in accordance with Section 4.3.3 of Chapter I, Title I, Part III of Legal Circular 006 of 2025 issued by the Superintendencia Financiera de Colombia (Colombian Financial Superintendence). Appointment of the committee responsible for approving the minutes of the meeting. Presentation of Ecopetrol's report regarding the proposed Merger. Report on the opinion issued by Alianza Fiduciaria S.A., in its capacity as Legal Representative of the Holders of the Domestic Public Debt Bonds issued in 2010. Reading of the opinion issued by Fitch Ratings Colombia S.A.S. Vote and decision by the bondholders with respect to the proposed Merger.

2013 Outstanding Bond Issuance Itaú Fiduciaria Colombia S.A. hereby gives notice that it has convened a meeting of bondholders to be held on September 04, 2026, at 3:30 p.m. (Bogotá, D.C. time). Bondholders may attend the meeting either (i) in person at Carrera 37 No. 24-24, Centro de Innovación Bogotá , Bogotá, D.C., Colombia, or (ii) virtually, via videoconference through the electronic platform of Colombia's Central Securities Depository (Depósito Centralizado de Valores de Colombia — Deceval S.A.). The meeting is convened in accordance with Article 19 of Law 222 of 1995 and Decree 398 of 2020 of Colombia. The link for virtual attendance is set forth below: https://asambleadebonosecopetrol2013.azurewebsites.net The outstanding 2013 CPI-linked bond issuance denominated in Colombian pesos has the following characteristics: Issuance Placement Date Maturity Date Term (Years) Coupon Rate Outstanding Amount (COP