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Sullivan & Cromwell LLP

Work +1 310 712 6600
Fax +1 310 712 8800

Robert A. Sacks

Work (310) 712-6640
Sullivan & Cromwell LLP

Work Department





Partner since 1990. Extensive experience in wide range of complex business disputes. Represents clients in securities, M&A, antitrust, contracts, corporate governance, investigations and IP matters. Appears in federal/state courts, arbitrations, and before SEC and other agencies. Has handled numerous trials and appeals. Clients: JPMorgan Chase, Cablevision, Goldman Sachs, j2 Global Communications, CIM Group, Amgen, Philips Electronics, Stifel Nicolaus, Goldcorp, BP, Softbank, Thomas Weisel, Frank H. McCourt and VeriFone.


Member, California and New York Bars; ABA; LACBA.


University of Texas Law School (JD, 1982); Harvard University (AB, 1979).

United States: Antitrust

Civil litigation/class actions

Within: Civil litigation/class actions

Steven Holley and Yvonne Quinn (both in New York) and Daryl Libow jointly head the practice at Sullivan & Cromwell LLP, which handles follow-on actions arising from criminal antitrust investigations, standalone class actions (where no government investigation is involved) and private inter-competitor litigation. The firm is particularly successful in handling cutting-edge mandates for financial institutions. In a recent highlight, Libow and Amanda Flug Davidoff defended JPMorgan Chase & Co against three silver futures rigging lawsuits brought by silver futures traders. New York-based Richard Pepperman successfully represented Goldman Sachs as a defendant in a class action involving an alleged zinc price-fixing conspiracy. Recently promoted partner Joseph Matelis as well Robert Sacks and Adam Paris in Los Angeles are other key individuals in the team. Unless stated otherwise, named lawyers are based in Washington DC.

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United States: Dispute resolution

M&A: litigation: defense

Within: Leading lawyers

Robert Sacks - Sullivan & Cromwell LLP

Within: M&A: litigation: defense

Sullivan & Cromwell LLP’s litigation and transactional teams have become one of the dominant forces in the M&A market. John Hardiman, who won a $1.5bn victory for a European telecoms company in a multi-jurisdictional ICC arbitration concerning an international acquisition, and Brian Frawley are leading lights in New York. Frawley’s highlights included representing Columbia Pipeline Group in a challenge to its $13bn acquisition by TransCanada, in which he defeated a request to expedite litigation. Robert Sacks in Los Angeles, who has built a strong reputation in appraisal litigation, achieved a favorable settlement for ACE Ltd in a consolidated class action arising from the $28bn acquisition through merger with Chubb Corporation. Frawley and Sacks represented Valeant Pharmaceuticals in a securities class action filed in California that alleged the company provided inside information to Pershing Square Capital Management about its $55bn attempted takeover of Allergan. The firm’s client list includes AT&T, Onyx Pharmaceuticals and Everbank.

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