José Alberto Sosa-Lloréns has advised clients on banking regulatory matters related to international banking, mergers, corporate reorganizations, securities activities of banks and has served as issuer's counsel in securities transactions of financial institutions, including tender offers and IPOs. He also has actively worked in the creation of investment companies, investment advisory firms and securities broker dealers in Puerto Rico. Another significant part of his practice includes serving as bond counsel and underwriters counsel in public finance transactions of the Commonwealth of Puerto Rico, its instrumentalities and political subdivisions. He has served as advisor to governmental entities in connection with the enactment of public finance legislation.

José has served as lead local counsel to private consortia bidding for public-private partnerships in various infrastructure projects in Puerto Rico, including representing the successful bidder for the 40-year lease of the Luis Muñoz Marín International Airport, the largest airport in the Caribbean region and the first airport under the Federal Aviation Administration (FAA) Pilot Program.

José has been engaged as counsel in various regulatory matters related to securities broker dealers, investment advisors and investment companies. His practice includes representing clients before the Commissioner of Financial Institutions, the Federal Deposit Insurance Corporation (FDIC), the Board of Governors of the Federal Reserve, the Financial Industry Regulatory Authority (FINRA), the New York Stock Exchange (NYSE), and the Securities and Exchange Commission (SEC), before the Corporate Finance Division. In addition to his regulatory and transactional work, José has represented securities broker dealers in securities arbitrations before FINRA and in complex mediation proceedings.