Anna T. Pletcher


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Anna Pletcher is an experienced litigator and former federal prosecutor who represents clients on a broad range of civil and criminal antitrust issues, as well as sensitive white collar and corporate investigations.

Prior to joining O’Melveny, Anna served for more than 10 years as a Trial Attorney for the United States Department of Justice Antitrust Division, where she investigated and prosecuted a variety of complex criminal and civil cases and served as Assistant Chief of the Antitrust Division’s San Francisco Office. Her experience on criminal matters includes prosecuting price fixing, bid rigging, market manipulation, fraud, and money laundering. Anna also served as a Special Assistant United States Attorney in the Major Crimes unit in San Francisco. On the civil side, Anna’s experience includes investigating proposed mergers and prosecuting a major technology company for entering into a no-poach agreement. 

During her decade-long tenure as a prosecutor, Anna worked closely with various components of the federal and state criminal justice systems, including the FBI, United States Probation, and the California Attorney General’s office. Recognized for her exemplary work, Anna received the Assistant Attorney General’s Award in 2014, 2011, and 2007.


Corporate & Government Experience

  • Financial Fraud Enforcement Task Force
  • Assistant Chief, San Francisco Office, US Department of Justice, Antitrust Division
  • Special Assistant US Attorney, Northern District of California

Honors & Awards

  • Selected as one of the Daily Journal’s “Top Antitrust Lawyers in California” (2021)
  • Recommended by The Legal 500 US (2020)
  • Minority Bar Coalition Unity Award (2020)
  • Assistant Attorney General’s Award (2007, 2011, 2014)


Bar Admissions

  • California

Court Admissions

  • US District Court, Eastern and Northern Districts of California
  • US Court of Appeals, First and Ninth Circuits


  • University of California at Berkeley, J.D.: California Law Review, Order of the Coif
  • Yale College, B.A

Professional Activities


  • Honorable Douglas P. Woodlock, United States District Court, District of Massachusetts

Adjunct Professor

  • University of California, Berkeley Law School (2014-2016)
  • University of California, Hastings College of Law (2012-2013)


  • Deputy Regional Director of Programs, Hispanic National Bar Association (2020)
  • Board Member, Bay Area Legal Aid (2020)
  • Board Member, Youth Leadership Institute (2020)
  • President, Association of Latino Marin Attorneys (2019-2020)
  • Board Member, Marin County Bar Association (2016-2019)
  • Steering Committee Member, Marin Coalition to End Human Trafficking (2015-2018)
  • Treasurer, Federal Bar Association, Criminal Section (2015-2017)
  • Chair, Marin Women’s Commission (2014-2016)
  • Bay Area Chapter Board Member, American Constitution Society (2009-2014)

Speaking Engagements

  • “The Defense Perspective on Hot Issues & Trends in White Collar, Securities, and Antitrust Enforcement,” Conference Sponsored by the Federal Bar Association, the ABA, and the Women’s White Collar Defense Association (February 2020)
  • “What Does a Price Fixer Look Like? Understanding the Profile of Criminal Antitrust Defendants,” ABA Antitrust Section Podcast (February 2020)
  • “Antitrust and Diversity” 12th Annual San Francisco and Silicon Valley Legal Market Conference (December 2019)
  • “Breaking Up Is So Hard to Do: Can the Antitrust Law Be Used to Bust Up “Big Tech” Companies?” Hispanic National Bar Association's Annual Convention (September 2019)

Recent Publications

  • “When Silence Is Not Golden: Real World Implications of Non-Parties “Taking the Fifth” in Civil Proceedings,” (co-authors Michael Tubach and Trisha Parikh), American Bar Association Antitrust Magazine Volume 35, No. 2 (Spring 2021)
  • Representing a performing rights society in its antitrust litigation with a consortium of radio station owners.
  • Defending the CEO of a multi-billion dollar company in a criminal price-fixing investigation.
  • Providing Covid-19 re-opening advice to several organizations including a global supplier of semiconductors and a computer hardware manufacturer.

Press Releases

In the News

Alerts and Publications

Prompted by Sweeping Executive Order on Competition, New Leadership at US Antitrust Agencies to Launch Review of Merger Guidelines; Similar Initiatives in Europe and China May Signal Greater Convergence in Enforcement Across Jurisdictions

July 26, 2021

Unanimous Supreme Court Affirms Injunction Barring NCAA Rules that Limit Education-Related Compensation to Student Athletes

June 30, 2021

Supreme Court Holds That FTC Cannot Sue for Monetary Relief: AMG Capital Management v. FTC

April 26, 2021

ABA ANTITRUST Magazine: When Silence Is Not Golden - Real World Implications of Non-Parties “Taking the Fifth” in Civil Proceedings

April 22, 2021

European Commission Extends Reach Over Non-Reportable Transactions

April 6, 2021

Senator Klobuchar Unveils Broad New Proposed Antitrust Legislation

February 8, 2021

FTC Adjusts New 2021 HSR Reporting Thresholds Downward

February 3, 2021

Daily Journal: Antitrust Issues to Watch During the Biden Administration

February 1, 2021

EU Commission Publishes Text of EU-China Comprehensive Agreement on Investment

January 27, 2021

The Department of Justice Antitrust Division Brings First-Ever Criminal No-Poach Case

January 22, 2021

Germany Strengthens Antitrust Enforcement Powers to Rein in Big Tech

January 19, 2021

China Expands National Security Review of Foreign Investments

January 12, 2021

European Commission Plan to Reform Europe’s Digital Space - Part 2 - Draft Digital Services Act

December 23, 2020

European Commission Plan to Reform Europe’s Digital Space - Part 1 - Draft Digital Markets Act

December 21, 2020

The Department of Justice Antitrust Division Brings First-Ever Criminal Labor Market Collusion Case

December 17, 2020

New Guidelines Clarify When Antitrust Division Will Consider Using Arbitration

December 1, 2020

The UK National Security and Investment Bill: Strengthening scrutiny of investment in the UK and introducing the UK’s first mandatory notification regime

November 20, 2020

China Publishes “Unreliable Entities” Rules Targeting Foreign Enterprises

September 22, 2020

DOJ Issues Letter Encouraging IEEE to Change Policy on Standard Essential Patents

September 18, 2020

Hong Kong Competition Tribunal Approves First Cartel Settlement

August 13, 2020

Congress Reauthorizes ACPERA and Repeals Sunset Provision

July 17, 2020

DOJ’s Prosecution of Generic Drug Companies Continues as it Announces Price-Fixing Charges Against Glenmark Pharmaceuticals, Inc.

July 2, 2020

The UK’s Competition and Markets Authority Targets Big Tech

July 2, 2020

DOJ and FTC Issue New Vertical Merger Guidelines

July 1, 2020

Germany’s Federal Cartel Office Calls for the EU Court of Justice’s Guidance on Important Patent Licensing Issues

June 25, 2020

Germany’s Supreme Court Sides with National Antitrust Enforcer in Facebook Abuse of Dominance Case

June 23, 2020

May Price Gouging Update

June 4, 2020

Updates on Recent US Merger Control Developments - May 2020

May 22, 2020

New Proposed Legislation in California Increases Antitrust Scrutiny in M&A and Other Activities in the Healthcare Industry

May 19, 2020

COVID-19 Antitrust M&A Considerations

May 7, 2020

Collusion in the Healthcare Industry: DOJ Charges Oncology Group for its Participation in a Criminal Antitrust Conspiracy

May 6, 2020

Price Gouging Update—April 2020

April 30, 2020

Gun-Jumping Concerns for Pending Transactions When There Is No Such Thing as “Ordinary Course of Business”

April 27, 2020

The Failing Firm Merger Defense in Times of Economic Turmoil: Past Lessons and the COVID-19 Crisis

April 23, 2020

Antitrust Agencies Watch for Labor Market Collusion in the Healthcare Industry

April 20, 2020

DOJ and FTC on Alert for Anticompetitive Conduct in Labor Markets for COVID-19 Essential Workers

April 15, 2020

Nationwide Shortages Open New Frontiers in Fight Against COVID-19-Related Price Gouging

April 14, 2020

Hong Kong Competition Commission Consults on Proposed Commitments Offered by Online Travel Agents to Remove Parity Clauses from Agreements with Accommodation Providers

April 9, 2020

China Adopts Antitrust Enforcement Policy to Fight COVID-19 and Spur Economic Recovery

April 8, 2020

Antitrust Implications of the President’s Invocation of the Defense Production Act

April 2, 2020

Department of Health and Human Services Triggers Price Gouging and Hoarding Provisions of Defense Production Act

April 1, 2020

Hong Kong Competition Commission Issues Statement on the Application of the Competition Rules to Cooperation Agreements Between Companies Responding to the COVID-19 Pandemic

March 30, 2020

Competitor Collaborations and Communications in Time of Crisis: Practical Guidance

March 26, 2020

Antitrust Agencies Provide Guidance for Competitor Collaborations in Healthcare Sector as COVID-19 Outbreak Deepens

March 25, 2020

European Antitrust in the Time of COVID-19

March 25, 2020

ABA Antitrust Law Podcast: What Does a Price Fixer Look Like? Understanding the Profile of Criminal Antitrust Defendants

February 17, 2020