Sergei Zaslavsky


Thank you for your interest. Before you communicate with one of our attorneys, please note: Any comments our attorneys share with you are general information and not legal advice. No attorney-client relationship will exist between you or your business and O’Melveny or any of its attorneys unless conflicts have been cleared, our management has given its approval, and an engagement letter has been signed. Meanwhile, you agree: we have no duty to advise you or provide you with legal assistance; you will not divulge any confidences or send any confidential or sensitive information to our attorneys (we are not in a position to keep it confidential and might be required to convey it to our clients); and, you may not use this contact to attempt to disqualify O’Melveny from representing other clients adverse to you or your business. By clicking "accept" you acknowledge receipt and agree to all of the terms of this paragraph and our Disclaimer.


Sergei Zaslavsky is an antitrust attorney who specializes in merger litigation, regulatory review of mergers and second requests, conduct investigations, antitrust audits, and antitrust counseling related to joint ventures and licensing agreements.

Sergei effectively represents his clients in matters by being detail oriented and understanding their business needs. He strives to obtain a thorough understanding of how his clients bring their products to market and the competitive issues they face. By doing this, he is able to contextualize the relevant facts, risks, and opportunities associated with their matters.


Bar Admissions

  • District of Columbia
  • Maryland


  • Harvard University, J.D.: magna cum laude
  • Dartmouth College, A.B., Economics: summa cum laude

Professional Activities


  • ABA Antitrust Section
  • Representing US Airways in litigation against the DOJ in its merger with American Airlines
  • Second-chairing economic experts’ direct and cross examinations at merger trial
  • Representing Fortune 100 Company in FTC investigation relating to joint venture agreement and IP licensing issues
  • Representing Honeywell in its acquisition of Intermec
  • Representing manufacturer of a weight loss product in an FTC Bureau of Consumer Protection investigation