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

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Ecopetrol (NYSE: EC) reported that Mr. Juan Gonzalo Castaño Valderrama resigned as a non-independent member of the Board of Directors, effective at the end of the May 12, 2026 board meeting. The remaining members keep sufficient quorum and majorities to deliberate and decide under applicable regulations.

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BOGOTA, Colombia, May 12, 2026 /PRNewswire/ -- 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 today.

Following this resignation, the Board of Directors will continue to operate with its remaining members, maintaining the quorum necessary to deliberate and the majorities required to make decisions in accordance with applicable regulations.

Ecopetrol and its Board of Directors extend their gratitude to Mr. Juan Gonzalo Castaño Valderrama for his valuable contributions, as well as for his ongoing availability, dedication, and expertise demonstrated throughout his tenure.

Ecopetrol and its Board of Directors wish him continued success in his future personal and professional endeavors.

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Ecopetrol is the largest company in Colombia and one of the main integrated energy companies in the American continent, with more than 19,000 employees. In Colombia, it is responsible for more than 60% of the hydrocarbon production of most transportation, logistics, and hydrocarbon refining systems, and it holds leading positions in the petrochemicals and gas distribution segments. With the acquisition of 51.4% of ISA's shares, the company participates in energy transmission, the management of real-time systems (XM), and the Barranquilla - Cartagena coastal highway concession. At the international level, Ecopetrol has a stake in strategic basins in the American continent, with Drilling and Exploration operations in the United States (Permian basin and the Gulf of Mexico), Brazil, and Mexico, and, through ISA and its subsidiaries, Ecopetrol holds leading positions in the power transmission business in Brazil, Chile, Peru, and Bolivia, road concessions in Chile, and the telecommunications sector. 

This release contains statements that may be considered forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended. All forward-looking statements, whether made in this release or in future filings or press releases, or orally, address matters that involve risks and uncertainties, including in respect of the Company's prospects for growth and its ongoing access to capital to fund the Company's business plan, among others. Consequently, changes in the following factors, among others, could cause actual results to differ materially from those included in the forward-looking statements: market prices of oil & gas, our exploration, and production activities, market conditions, applicable regulations, the exchange rate, the Company's competitiveness and the performance of Colombia's economy and industry, to mention a few. We do not intend and do not assume any obligation to update these forward-looking statements. 

For more information, please contact: 

Investor Relations Office
Email: investors@ecopetrol.com.co 

Head of Corporate Communications (Colombia)
Marcela Ulloa
Email: marcela.ulloa@ecopetrol.com.co 

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SOURCE Ecopetrol S.A.

FAQ

Why did Ecopetrol (NYSE: EC) board member Juan Gonzalo Castaño resign on May 12, 2026?

Juan Gonzalo Castaño resigned from Ecopetrol’s board for personal and professional reasons. According to Ecopetrol, his resignation became effective at the close of the May 12, 2026 board meeting, ending his tenure as a non-independent director.

What is the effective date of Juan Gonzalo Castaño’s resignation from Ecopetrol’s board?

His resignation took effect at the conclusion of Ecopetrol’s Board of Directors meeting on May 12, 2026. According to Ecopetrol, the board will continue operating with its remaining members after his departure.

Does Ecopetrol’s board still have quorum after the May 12, 2026 resignation?

Ecopetrol states that the board will continue to operate with its remaining members while maintaining the necessary quorum and required majorities. According to Ecopetrol, this allows the board to keep deliberating and making decisions under applicable regulations.

What role did Juan Gonzalo Castaño hold on the Ecopetrol (EC) board?

Juan Gonzalo Castaño served as a non-independent member of Ecopetrol’s Board of Directors. According to Ecopetrol, he contributed expertise, availability, and dedication during his tenure, for which the company and board expressed formal gratitude.

How did Ecopetrol respond to the resignation of board member Juan Gonzalo Castaño?

Ecopetrol and its board thanked Juan Gonzalo Castaño for his valuable contributions and dedication. According to Ecopetrol, they also wished him ongoing success in his future personal and professional endeavors after leaving the board.

What are Ecopetrol’s main business activities and geographic presence for NYSE: EC investors?

Ecopetrol is Colombia’s largest company and a major integrated energy player. According to Ecopetrol, it leads in hydrocarbon production, refining, petrochemicals, gas distribution, and, via a 51.4% stake in ISA, power transmission and infrastructure across multiple Latin American countries.