Partner

425 Lexington Ave
New York, NY 10017

+1 212 455 2750

Litigation Star


Jurisdiction:

New York

Practice area:

Competition/antitrust


Peter Guryan, Global Co-Chair of the Firm’s Antitrust and Trade Regulation Practice, is a Partner resident in the Firm’s New York office. Peter has extensive experience in civil and criminal antitrust matters for major corporations and private equity firms. He has represented clients in obtaining antitrust approvals in numerous high-profile and challenging transactions, often global in scope, and in other government antitrust investigations before the Department of Justice, the Federal Trade Commission and competition authorities outside of the United States.


Peter’s recent work highlights include:

  • L3Harris Technologies, Inc. as antitrust counsel in connection with its acquisition of
    Aerojet Rocketdyne Holdings, Inc.;
  • Refinitiv as global antitrust counsel in its $27 billion acquisition by London Stock
    Exchange Group;
  • The Bountiful Company in its $5.75 billion acquisition by Nestlé;
  • First Data Corporation as global antitrust counsel in connection with obtaining
    antitrust approvals for its $22 billion merger with Fiserv;
  • L3 Technologies, Inc. in connection with the antitrust review of its $33.5 billion
    merger of equals combination with Harris Corporation;
  • Buckeye Partners in its $435 million acquisition by Magellan Midstream Partners;
  • Ferro Corporation in its $2.1 billion acquisition by Prince International Corporation;
  • The Cosmopolitan of Las Vegas in its acquisition by MGM Resorts International;
  • Blackstone and related portfolio companies, as antitrust counsel, in a variety of
    transactions, including: Ancestry; Array Technologies; MagicLab; MB Aerospace;
    and Thomson euters’ Financial & Risk Business;
  • Sedgwick in connection with its acquisition of York Risk Services Group;
  • Gerdau S.A. in connection with its sale of certain U.S. steel operations to Commercial
    Metals Company;
  • KKR and related portfolio companies, as antitrust counsel, in a variety of transactions,
    including: BMC Software; Coty Inc.; Envision Healthcare; and PharMerica;
  • NXP Semiconductors N.V. in connection with its $11.8 billion acquisition of
    Freescale Semiconductor, Ltd.;
  • ChemChina in securing antitrust clearance for its $43 billion acquisition of Swiss
    agrochemical company Syngenta AG; and
  • Tradeweb Markets in an antitrust class action alleging several financial institutions
    and trading platforms conspired to limit competition in the $320 trillion market for
    interest rate swaps; secured a dismissal of all claims.


Peter began his career at the Antitrust Division of the Department of Justice, where he played a significant role in the successful challenge of the proposed merger between WorldCom and Sprint.


He is consistently recognized as a leading antitrust lawyer by Chambers USA and The Legal 500, where sources describe him as “calm and collected” and “extremely bright and business friendly” with a “tremendous depth of knowledge.”


Peter received his J.D., cum laude, in 1996 from Cornell Law School and his B.A. in 1992 from Cornell University.


Updated Aug 2023