Expert in advising national and international companies and funds on M&A transactions, private equity, and project finance.

Oscar Trelles heads the Cuatrecasas M&A Practice in Latin America and coordinates the Private Equity Practice in the Lima office. He also specializes in financing and project finance. He has participated in some of the most sophisticated and important national and international transactions, including multijurisdictional transactions, in recent years.

Before joining Cuatrecasas, he worked in different international law firms in Lima and New York, including Curtis, Mallet - Prevost, Colt & Mosle and Simpson Thacher & Bartlett, where he participated in complex multijurisdictional transactions.

He is a member of the New York and Lima bar associations.

He lectures on M&A and project finance in the Master of Laws at the Pontificia Universidad Católica del Perú and in the International Financial Management Program at Universidad de Piura.

He also contributes to publications and writes legal articles for different specialized journals and other written media.


  • Private Equity Program
    The Wharton School, Philadelphia, 2019

    International Financial Management Program (PAD)
    Universidad de Piura, Peru, 2014

    Harvard Law School, Cambridge, Massachusetts, USA, 2007

    Bachelor of Laws (summa cum laude)
    Pontificia Universidad Católica del Perú, Peru, 2004

Directory Mentions

Recommended lawyer
Chambers & Partners (Global & Latin America), Legal 500, Latin Lawyer, IFLR, LACCA, Leaders League and Best Lawyers in Corporate M&A, Project Finance and Private Equity

Publications and News