Mr Ruben Diaz > Hughes Hubbard & Reed LLP > Miami, United States > Lawyer Profile

Hughes Hubbard & Reed LLP
MIAMI, FLORIDA 33131-4332
United States


Ruben Diaz Jr. is an international transactional partner in Hughes Hubbard’s corporate group and is co-chair of Hughes Hubbard’s Latin America practice. After starting his career in private practice, Ruben served as Chief Legal Officer and General Counsel of a privately-held Central American group with businesses in key sectors, including financial institutions and investment advisory services, agro-industrial, communications, automotive, energy, information technology, retail and consumer products, health care and real estate. He also previously served as Head of the Latin America Legal Practice at Ernst & Young.


  • University of Chicago Law School, J.D., 1983
  • Princeton University, A.B., 1980, cum laude

Lawyer Rankings

Latin America: International firms > City focus - Miami

Hughes Hubbard & Reed LLP‘s Latin America practice is primarily located in Miami, where it has an outstanding record in Brazil financings, especially bilateral and syndicated loans. It is also at the forefront of aviation finance and has further capabilities in sovereign bond offerings (notably for the Republic of Paraguay), and extensive expertise in cross-border M&A, including inbound and outbound transactions between Latin America and the US. Amy Dulin is a big name in bilateral and syndicated loans to major Brazilian businesses, acting for a range of international investment banks; Emilio Saiz is another emerging talent in Brazil financings, having been elevated to partner in 2021. Co-chair of the Latin America team, Federico Goudie was raised in Brazil and has represented the Republic of Paraguay for over 20 years, recently representing the state on its $500m sovereign bond offering. His fellow co-chair, Ruben Diaz specialises in cross-border investment and M&A, and Mark Denham  is at the forefront of the aviation finance field; he advised United Airlines on its landmark $10.75bn senior secured debt financing, involving substantially all slots, routes and gate leaseholds in Latin America. Luis O’Naghten is a key partner for international arbitration in the region, particularly acting for multinationals in investor-state arbitrations.

United States > Tax > International tax

Based in New York, Hughes Hubbard & Reed LLP advises on tax-related matters concerning international M&A, spinoffs, and off-shore investment funds. The team has sector-specific expertise in the life sciences, media, and entertainment industries. Practice chair Andrew Braiterman covers tax aspects of M&A, hedge funds, and private equity funds. Alan Kravitz deals with tax matters related to aviation and equipment finance, while Jerry Harrison advises on international tax planning projects. Cross-border M&A tax expert Ruben Diaz was promoted to managing partner of the Miami office in March 2021. Employment tax specialist Charles Wachsstock joined from Arnold & Porter in May 2021.