Clare O'Brien > Shearman & Sterling LLP > New York, United States > Lawyer Profile

Shearman & Sterling LLP Offices

Shearman & Sterling LLP
599 LEXINGTON AVENUE
NEW YORK, NY 10022-6069
NEW YORK
United States
Visit website 1 212 848 4000 1 212 848 7179

Clare O'Brien

Clare O'Brien photo
+1 212 848 8966 cobrien@shearman.com View profile View profile

Work Department

Mergers & Acquisitions

Position

Partner

Career

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 numerous accolades including “Dealmaker of the Year”  by The American Lawyer, Top U.S.A. Women Dealmaker by the Global M&A Network 2021  as well as being named one of The Deal’s Top Women in Dealmaking 2021 and 2022 Lists for her work in Mergers & Acquisitions.

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.

Memberships

  • New York
  • Ireland

Education

Incorporated Law Society of Ireland

Irish Roll of Solicitors

Trinity College, Dublin

B.A. in Legal Science

Lawyer Rankings

United States > M&A/corporate and commercial > M&A: large deals ($1bn+)

(Leading lawyers)

Clare O’Brien – Shearman & Sterling LLP

Delivering multi-jurisdictional and multi-disciplinary advice, Shearman & Sterling LLP is highly capable in the full gamut of M&A matters, including high-profile company deals, joint ventures, and carve-out transactions. Scott Petepiece – Americas team head – concentrates on large-scale M&A in the infrastructure, energy and manufacturing industries, while deputy leader Daniel Litowitz has worked on sector-defining deals in the worlds of media, telecoms, healthcare and consumer goods; both practitioners are based in New York. In the same office, George Casey enjoys a strong reputation in this space, advising on restructurings, joint ventures, and acquisitions, which are also among Clare O’Brien‘s notable areas of practice. The firm offers further transactional experience in Texas and the Bay Area, with a special emphasis on core industries like technology and energy. Daniel Mitz in Menlo Park is recommended for his knowledge of tech transactions.

Lawyer Rankings

Top Tier Firm Rankings

Firm Rankings