Career
Guillermo is a capital markets and finance lawyer through and through. He started working for clients in the financial industry even before opening his own savings account.
Clients reach out to Guillermo when they are looking for an experienced, reliable lawyer that anticipates their needs and communicates well.
Guillermo advises some of the largest and finest companies in Mexico and participating in the most relevant and innovative transactions. On the bank side, he represents all the first-tier banks doing business in the country. He is also recognized as a Mexican leader in Sustainable Finance and is a part of the ESG team at the Firm.
He is innately a teacher, both within the office and in academic circles. He always mentors young lawyers through the mentoring programs at Galicia and Abogadas MX. He lectures at Escuela Libre de Derecho and Universidad Panamericana and regularly publishes banking and finance articles.
Guillermo obtained his Law Degree from Escuela Libre de Derecho in Mexico City, and a few years later, his LL.M. from Duke University School of Law.
He spent a year as a foreign associate at Davis Polk & Wardwell in New York City, where he developed several other skills.
Guillermo is recognized as an expert and leader in the financial and capital markets legal sectors in Mexico by renowned international publications, such as Chambers Latin American Guide, Chambers Global Guide and The Legal 500 Latin American Guide. Leaders League ranks him as an expert in the Banking and Finance practice. IFLR1000 and Latin Lawyer list him as a leader in the Mexican legal market.
Guillermo is a member of the Executive Committee of the Firm.
Clients
Client Quotes:
"Guillermo Pérez Santiago is a lawyer who is second to none; he's one of the best in Mexico for financial and banking sector matters. He's always available and always there to help."
"Guillermo Pérez Santiago's proactive approach and leadership are instrumental in driving success in our capital markets transactions."
"Guillermo Pérez Santiago is one of the leading lawyers in Mexico and our go-to lawyer for complex transactions. He is extremely business-oriented and always finds a solution."
"Guillermo Pérez Santiago is the best capital markets lawyer in the market in Mexico. He is practical, business-oriented, knowledgeable, flexible, widely experienced, and has great availability."
