William Sheehan > Simpson Thacher & Bartlett LLP > New York, United States > Lawyer Profile

Simpson Thacher & Bartlett LLP
NEW YORK, NY 10017-3954
United States
William  Sheehan photo


Corporate Partner William Sheehan regularly represents financial institutions and companies in connection with syndicated leveraged finance, direct lending and other commercial lending transactions. His practice covers a wide range of bank finance—including acquisition-related credit facilities, bridge financings, general corporate and investment grade transactions, asset-based loans, restructurings and debtor-in-possession financings. He has handled transactions for JPMorgan, Citibank, Credit Suisse, Bank of America, UBS and Teleflex.


Joined Firm 1996.


Member of The New York City Bar Association and the American Bar Association.


Columbia Law School (J.D., Harlan Fiske Stone Scholar, 1996), Brown University (A.B., 1993).

Lawyer Rankings

United States > Finance > Commercial lending

(Leading lawyers)

William Sheehan –Simpson Thacher & Bartlett LLP

One of New York’s premier finance firms, Simpson Thacher & Bartlett LLP is noted for its continued ability to sit at the very top of both the lender and borrower side markets, representing an impressive range of leading investment banks, private equity sponsors, direct lenders and corporate borrowers in numerous high-value, complex transactions every year. The group’s lender practice is best known for its longstanding relationship with JP Morgan; William Sheehan is a key name in this regard and recently co-led a team, alongside practice head Patrick Ryan, which represented the bank in a $41.5bn senior unsecured bridge loan to finance the combination of AT&T’s WarnerMedia with Discovery. With regards to borrower work, James Cross continues to advise on acquisition financing, while Jennifer Hobbs assists corporate borrowers such as Dell Technologies with securing multi-billion credit facilities. Outside of New York, the firm expanded its partner ranks in January 2021 with the promotion of Michael Vernace in California.