Deals & Cases

Schellenberg Wittmer advises Maurel & Prom on the acquisition of Gran Tierra’s assets in Colombia and Ecuador

14.10.2026

Schellenberg Wittmer acted as Swiss counsel to Etablissements Maurel & Prom S.A. (Maurel & Prom), an oil and gas company listed on Euronext Paris, on the acquisition of Gran Tierra’s assets in Colombia and Ecuador, for a total transaction value of USD 1.33 billion.

The transaction covers all of Gran Tierra’s exploration and production assets in both countries, including producing fields, development projects and exploration licences. It represents a major strategic milestone for Maurel & Prom, significantly strengthening its presence in Latin America. The total transaction value amounts to USD 1.33 billion, including the assumption of certain debt instruments.

Completion of the transaction remains subject to obtaining the required regulatory approvals in Colombia and Ecuador and is expected to occur by the end of 2026.

The Schellenberg Wittmer team consisted of Lorenzo Olgiati, Florian Angstmann and Sahra Cade (all Corporate/M&A), Philippe Borens and Dominic Wälchli (both Banking), David Mamane and Laura Macht (both Competition) as well as Michael Nordin and Veysel Oruclar (both Tax).

Herbert Smith Freehills Kramer acted as international lead counsel to Maurel & Prom in this transaction. Maurel & Prom was also advised by Robalino Abogados on Ecuadorian law matters and by Chalela I Abogados S.A.S. on Colombian law matters.

 

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