Resolutions Adopted by the Extraordinary Shareholders' Meeting Held on September 15, 2026

BOGOTÁ, Colombia , Sept. 16, 2026 /PRNewswire/ -- Ecopetrol S.A. (BVC: ECOPETROL) (NYSE: EC ) (the "Company") hereby reports that, at the Extraordinary General Shareholders' Meeting held on September 15, 2026, commencing at 11:00 a.m. (Bogotá, Colombia time), and duly convened in accordance with applicable legal requirements and the Company's bylaws, the shareholders voted on each item of the agenda, with the results set forth below:

i. Approval of the Agenda The proposed agenda for the meeting was approved.

ii. Appointment of the Chair of the General Shareholders' Meeting Mr. Francisco Reyes Villamizar was appointed Chair of the Meeting.

iii. Appointment of the Elections and Vote Counting Committee The Elections and Vote Counting Committee of the General Shareholders' Meeting was appointed, as proposed by shareholder Ingrid Deza Darwish.

iv. Appointment of the Principal and Alternate Committees for the Review and Approval of the Minutes The Principal Committee and the Alternate Committee for the Review and Approval of the Minutes of the General Shareholders' Meeting were appointed, as proposed by shareholder Carolina Zarama Caycedo.

v. Approval of the Amendment to Article 20 of the Company's Bylaws Regarding the Composition, Renewal, and Election of the Board of Directors The proposed amendment was made available prior to the meeting at the following link: https://www.ecopetrol.com.co/wps/portal/Home/en/investors/general-shareholders-meeting/2026-second-extraordinary-shareholders-meeting The shareholders approved the amendment to Article 20 of the Company's bylaws concerning the composition, renewal, and election procedures of the Board of Directors, as proposed by the Nation of Colombia, acting through the Ministry of Finance and Public Credit.

vi. Approval of Instructions to the Company's Board of Directors, Including the Board Elected at this Meeting, to Align the Board Succession Policy and Other Internal Corporate Governance Instruments with the Amendment to Article 20 of the Bylaws The shareholders approved instructing the Company's Board of Directors, including the Board elected at this Meeting, to align the Board Succession Policy and all other internal corporate governance instruments with the amendment to Article 20 of the bylaws described in Item v above. The shareholders further resolved that, pending completion of such alignment, any internal provisions inconsistent with the amended Article 20—including, without limitation, any requirement mandating the inclusion of a minimum number of incumbent Board members—shall not apply and shall not constitute a prior requirement, condition precedent, or impediment to the full election of the Board of Directors contemplated at this Meeting.

vii. Consideration of, and, if Necessary, Approval of, a Waiver for the Company and/or the Board of Directors Regarding the Preparation and Delivery of Information on Nominees and Certain Internal Review, Verification, Supplementation, and Support Actions Contemplated Under the Succession Policy That Could Not Be Completed Prior to the Election The shareholders determined that no such waiver was necessary for the Company and/or the Board of Directors with respect to the preparation and delivery of information on nominees, or with respect to the internal review, verification, supplementation, and support actions contemplated under the Succession Policy. Accordingly, this item was not submitted to a shareholder vote.

viii. Election of the Nine Members of the Company's Board of Directors, by Electoral Quotient, for the Remainder of the 2025–2029 Institutional Term The shareholders approved the election of the members of the Board of Directors for the remainder of the 2025–2029 institutional term, as set forth below: Slate Name Status First Carlos Augusto Suárez Rojas Independent Second Jorge Alberto Jaller Jaramillo Non-Independent Third José Camilo Manzur Jattin Independent Fourth Ludmila Del Carmen Vergara Rosales Non-Independent Fifth Be...