Clare O’Brien regularly advises major US and international clients on their public and private mergers and acquisition transactions, including public company restructurings, joint ventures and large public transactions. She also provides counsel on corporate law questions, including corporate governance matters.

Ms. O’Brien has been consistently acknowledged as a leading M&A lawyer and has received a “Dealmaker of the Year” award by The American Lawyer.

Prior to joining Shearman & Sterling, Ms. O’Brien worked with the law firm of Brady & Tarpey, P.C., where her practice included cross-border corporate transactions, litigation and domestic relations. She began her legal career at the Irish law firm of Eugene F. Collins & Son.