William J. O’Brien > Paul, Weiss, Rifkind, Wharton & Garrison LLP > New York, United States > Lawyer Profile

Paul, Weiss, Rifkind, Wharton & Garrison LLP’s environmental practice is led in New York by counsel William O’Brien and associate Julia Quigley . It is particularly active in the M&A sphere and also handles environmental and ESG issues pertaining to strategic transactions, joint ventures, restructurings, financings, securities offerings and real estate deals, as well as providing support in regulatory matters and litigation. Clients include buyers, sellers, lenders, borrowers, investors, issuers of securities and underwriters, and the firm advises on both domestic and foreign transactions. O’Brien is a member of the firm’s Climate Change Working Group and advises clients on environmental issues relating to investments in private and public companies and the acquisition of portfolio companies.