Ecopetrol signs six-year labor deal with USO

Ecopetrol S.A. reports that it has reached a final six-year collective bargaining agreement with the Oil Workers Union (USO), effective from January 1, 2026.

Rhea-AI Filing Summary

Ecopetrol S.A. reports that it has reached a final six-year collective bargaining agreement with the Oil Workers Union (USO), effective from January 1, 2026. USO is described as the majority union and holder of the main collective agreement.

In parallel, the company completed 66 additional final agreements with other participating labor unions, following more than 990 negotiation sessions. The agreements include improved working conditions, expanded health and education benefits, stronger diversity, equity and inclusion initiatives, and increased social investment.

Ecopetrol states that these measures are meant to support employee and family well-being, reinforce relationships with key stakeholders, and remain consistent with its principles of reasonableness, efficiency and cost discipline. The company plans to complete formal filing of the agreement with Colombia’s Ministry of Labor and then conduct joint nationwide sessions with USO to explain the new terms.

Key Figures

Agreement term: Six years Additional union agreements: 66 final agreements Negotiation sessions: More than 990 sessions +3 more

6 metrics

Agreement term Six years Term of new collective bargaining agreement effective January 1, 2026

Additional union agreements 66 final agreements Agreements with other participating labor unions

Negotiation sessions More than 990 sessions Direct negotiation stage and its extension with unions

ISA ownership stake 51.4% of ISA shares Described ownership stake in ISA following its acquisition

Employee count More than 19,000 employees Ecopetrol workforce size described in company overview

Hydrocarbon production share More than 60% Share of Colombia’s hydrocarbon production for which Ecopetrol is responsible

Key Terms

collective bargaining agreement, diversity, equity, and inclusion, forward-looking statements, hydrocarbon production, +1 more

5 terms

collective bargaining agreement financial

"it reached a final agreement on a new collective bargaining agreement with the Oil Workers Union"

A collective bargaining agreement is a written contract negotiated between a group of employees (usually represented by a union) and their employer that sets wages, benefits, work rules and procedures for a fixed period. It matters to investors because it locks in labor costs, schedules changes and dispute-resolution rules—similar to a long-term service contract—so it affects a company’s expenses, operational stability and risk of strikes.

diversity, equity, and inclusion other

"the strengthening of diversity, equity, and inclusion initiatives, and social investment"

forward-looking statements regulatory

"This release contains statements that may be considered forward-looking statements within the meaning of Section 27A"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

hydrocarbon production financial

"it is responsible for more than 60% of the hydrocarbon production"

energy transmission financial

"the company participates in energy transmission, the management of real-time systems (XM)"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What labor agreement did Ecopetrol (EC) announce in June 2026?

Ecopetrol announced a final six-year collective bargaining agreement with the Oil Workers Union (USO). The deal covers working conditions, benefits, diversity initiatives and social investment, and follows an extensive negotiation process involving more than 990 sessions with union representatives.

How long is Ecopetrol’s new collective bargaining agreement with USO?

The new collective bargaining agreement between Ecopetrol and USO runs for six years. It is effective from January 1, 2026, providing a multi-year labor framework that governs working conditions, benefits and related commitments between the company and its majority union.

How many unions reached agreements with Ecopetrol (EC)?

Ecopetrol reports reaching one main collective agreement with USO and 66 final agreements with other labor unions. These agreements emerged from an extended negotiation process and collectively define labor conditions and related benefits for employees across the organization.

What kinds of benefits are included in Ecopetrol’s new labor agreements?

The agreements include improvements in working conditions and enhanced health and education benefits. They also emphasize diversity, equity and inclusion initiatives and social investment, aiming to support employees and their families while maintaining principles of efficiency and cost discipline.

What steps will Ecopetrol take to implement the new USO agreement?

Ecopetrol expects to complete formalization and filing of the agreement with Colombia’s Ministry of Labor. After that, the company and USO plan joint nationwide sessions to communicate and explain the agreed terms to employees across different locations.

How significant is Ecopetrol (EC) within Colombia’s energy sector?

Ecopetrol describes itself as Colombia’s largest company and a major integrated energy firm in the Americas. It is responsible for over 60% of Colombia’s hydrocarbon production and operates in transportation, refining, petrochemicals, gas distribution and power transmission through its stake in ISA.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/15/2026 - 06:03 AM EDT Learn about SEC filing dates

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, 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 incorporation or organization)

Carrera 13 No. 36 – 24

BOGOTA D.C. – COLOMBIA

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x      Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1)

Yes ¨      No x

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

Yes ¨      No x

Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ¨      No x

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

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Ecopetrol S.A.
	By:	/s/ Alfonso Camilo Barco
		Name:	Alfonso Camilo Barco
		Title:	Chief Financial Officer

Date: June 14, 2026

Ecopetrol and the Oil Workers Union (USO) Reach Final Agreement in Collective Bargaining Process

Bogota D.C., June 15, 2026

Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC, the “Company”) announces that, on June 13, 2026, as part of the collective bargaining process, it reached a final agreement on a new collective bargaining agreement with the Oil Workers Union (Unión Sindical Obrera – USO), the majority union and holder of the collective bargaining agreement. The new agreement has a term of six years, effective as of January 1, 2026.

In addition, in accordance with applicable law, the Company has entered into 66 final agreements with other participating labor unions.

This outcome reflects the discussions held during the direct negotiation stage and its extension, which took place over the course of more than 990 sessions in an environment grounded in dialogue, mutual respect, active listening, and collaborative engagement.

The agreements reached include improvements in working conditions, as well as enhanced benefits in health and education, the strengthening of diversity, equity, and inclusion initiatives, and social investment, among other aspects. These measures are intended to contribute to the well-being of employees and their families, strengthen relationships with key stakeholders, and align with the Company’s principles of reasonableness, efficiency, and cost discipline.

In the coming days, the Company expects to carry out the necessary procedures for the formalization and filing of the agreement with the Ministry of Labor. Subsequently, the Company and the USO negotiating teams intend to conduct joint nationwide sessions to communicate and explain the agreements reached. There can be no assurance as to the timing of such procedures or sessions.

The Company acknowledges and appreciates the work and commitment of all employees and union representatives who contributed their expertise and efforts to the successful completion of this process.

------------------------------------- 

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 

Filing Exhibits & Attachments

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