William Rosenstadt


William Rosenstadt is a co-founder of Ortoli Rosenstadt LLP, head of the firm’s Capital Markets practice, and co-chair of the firm’s Asian practice.

William’s practice primarily focuses on representing entrepreneurs, public companies, hedge funds, private equity funds and other corporate entities on complex international and corporate transactions as well as EB-5 immigration matters utilizing both direct investment and regional centers.

William is deeply experienced in all types of public and private offerings, federal securities law compliance, venture capital financings, and international merger and acquisition transactions. He has taken companies public in the U.S. and European markets.

William commenced his career by clerking for the honorable James L. Garrity in the United States Bankruptcy Court for the Southern District of New York. Subsequently, William became general counsel to a private-equity firm specializing in small/mid-cap leveraged buyouts where he was responsible for all aspects of the company’s transactions. In 2007, he was a founding partner of Sanders Ortoli Vaughn-Flam Rosenstadt LLP, the predecessor firm to his current firm, Ortoli Rosenstadt LLP.

In addition to his law practice, William has been an Adjunct Professor of Law at Benjamin N. Cardozo School of Law since 2015, where he teaches Contract Negotiation and Drafting. He receives tremendous satisfaction from working with law students to further hone their drafting and reasoning skills.


  • Capital Markets
  • Corporate Immigration and Pre-Immigration Tax Planning
  • Corporate, Mergers & Acquisitions
  • Franchising
  • International Transactions


  • Biotech/Life Science
  • Cross-Border Corporate/Securities
  • Financial Enterprises
  • Franchising (EB-5)
  • Manufacturing
  • Medical Devices
  • Metals and Mining


Syracuse University, Syracuse, New York – B.A., 1990

Benjamin N. Cardozo School of Law, New York, NY, – J.D.,1995



New York, 1996

New Jersey, 1996