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

Council Representative:

Koslov, Tara


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


Chugh, Randy
Piehl, Matthew

Committee Roster  


Committee Events

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

December 5, 2016
Section Events

    Nuts & Bolts of Premerger Conduct: Where’s the Line in the Sand?


    This program brings together a panel of experienced antitrust practitioners to discuss the restrictions that apply to parties to a transaction before the close of that transaction, both in the U.S. and E.U. Expect both practical guidance and a lively discussion of recent trends and the impact of recent ...

    Class Action Reform: Necessary or Nocuous?


    The Fairness in Class Action Litigation Act of 2017 proposes controversial changes to Rule 23 could significantly reduce the number of class-action lawsuits. Hear from practitioners and thought leaders on both sides of the debate about the ramifications of this far-reaching legislation. FREE : Antitrust ...

    Balancing Business Objectives and Antitrust Compliance: Benchmarking Best Practices for Competition Counsel


    This is a pilot of a new series of in-person programs sponsored by the Corporate Counseling Committee, focusing on compliance issues common to companies across the spectrum. The program will be open to all, but will be of greatest interest to in-house counsel with direct compliance responsibilities. ...

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Modified by Julian-Robert Wiley on November 17, 2017

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