American Bar Association
Mergers and Acquisitions

Mergers and Acquisitions



On behalf of the Mergers & Acquisitions Committee, welcome to our committee webpage.

We have designed this webpage to be a resource for merger and acquisition practitioners - a "one-stop shop" for the most current government and private materials related to merger policy and enforcement. In addition, we will regularly post recent developments in the merger area, as well as advise you of continuing Committee activities. If you have any suggestions of features we should add or improve, please let us know by contacting any of the Committee leadership.

Again, welcome and we hope you come back often.

Norman Armstrong and Ronan Harty, Co-Chairs

Committee Resources

The M & A Committee provides content critical to a regulatory practice, including:

  • The Threshold: The Committee newsletter provides critical analysis and insight into current and substantive merger and acquisition topics.
  • The Market Definition Catalog: Contains detailed information covering all U.S. federal merger cases from 1999 to Q1 2017.
  • No Action Statements: Provides valuable insights into the agencies' merger review process from 2002 to 2010.
  • Consent Decrees: Includes summary information on consent decrees from 1999 to 2012.
  • Mergers Contract Provision Database: Database of publicly-available, antitrust-related provisions to assist practitioners that are in the process of negotiating a merger or acquisition agreement from, updated through 2015.

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Join the Mergers & Acquisitions Committee

The Mergers & Acquisition Committee has had a very active year. Committee members are working hard to present interesting and useful programs to the membership, including developing upcoming brown bags and Spring Meeting programs. Members also are actively involved in substantive projects on a range of issues affecting merger process and analysis. In addition, Committee members continue to contribute to significant publications. If you are a current member of the Antitrust Section and would like to become a member of the Committee and get involved in these and other activities, please click here.

Recent Developments and Information About Upcoming Programs

Please view our Connect page for up-to-date information about recent developments and information about upcoming Committee events.

Mergers & Acquisitions Committee

Annual Plan, Long Range Plan

The Threshold

Three times each year, the Mergers & Acquisitions Committee publishes a newsletter, The Threshold, containing substantive articles on merger policy and enforcement. If you would like to participate in preparing the newsletter or would like to submit an article for consideration, please contact Committee Vice-Chair Michael Keeley,, or one of the editors of The Threshold.



Armstrong, Norman
Harty, Ronan


Conner, Ian
Halladay, Casey
Keeley, Michael
Knight, Michael
Marks, Mary

Committee Roster  


Committee Events

[Program Materials] (12/05/2016) Hot Documents in Recent Merger Litigation

December 5, 2016
Section Events

    Use (and Misuse) of Statistical Sampling in False Claims Act Litigation


    Statistical sampling is increasingly used in FCA litigation where the analysis of the full population at issue would be too costly. The goal of sampling is to draw conclusions about the population based on a subset of the data. Obtaining a proper sample requires statistical expertise and careful data ...

    Brexit: Implications for UK and EU competition policy and law enforcement


    With the delivery of the UKs Article 50 notice on March 29, 2017, Theresa May launched the two-year negotiating process leading to the first exit of a Member State from the European Union (EU). The negotiations will affect virtually every economic and policy area in Europe, including competition policy. ...

    Consumer Privacy & Data Security Developments


    This hour-long session provides privacy law practitioners with timely and relevant updates on consumer privacy and data security activities covering regulation, legislation, and litigation in both the United States and international. Moderator: Matt, Sullivan, Sprint Corporation Speakers: Reed ...

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Modified by Julian-Robert Wiley on June 5, 2017

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