Ryan's practice focuses on defending mergers and acquisitions before the Federal Trade Commission, Department of Justice, state antitrust authorities, and foreign competition authorities.

He also counsels clients on a range of antitrust matters including private and class action litigation as well as government investigations.

Ryan has represented clients in a variety of industries including aerospace and defense, aggregates, agribusiness, alcohol beverages, chemicals, healthcare, media, metals, oil and gas, pharmaceuticals, and transportation. He has been praised by clients in The Legal 500 for providing "excellent service," as well as "practical and thoughtful advice."

Prior to joining the firm, Ryan worked as an associate for another international law firm on antitrust matters. He also interned with the U.S. Securities and Exchange Commission's Division of Enforcement and the New Orleans Saints.



Representative matters

Chevron Corporation in its proposed acquisition of Hess Corporation.

JetBlue Airways in its proposed acquisition of Spirit Airlines.

JetBlue Airways in its Northeast Alliance with American Airlines.

Chevron Corporation in its acquisition of Noble Energy, Inc.

ViacomCBS in its proposed sale of Simon & Schuster to Penguin Random House.

Raytheon Company in its merger with United Technologies Corporation.

Bunge Limited in its sale of certain grain elevators to Zen-Noh Grain Corporation.

Glatfelter Corporation in its acquisition of Georgia-Pacific's U.S. nonwovens business.

Glatfelter Corporation in its acquisition of Jacob Holm Group.

LANXESS it is acquisition of Emerald Kalama Chemical.

Citrix Systems in its acquisition of Wrike, Inc.

Boston Scientific in the sale of its specialty pharmaceuticals group to SERB SAS and Stark International Lux S.A.R.L.

ViacomCBS in its sale of CNET Media Group to Red Ventures.

Vice Media in its acquisition of Refinery 29.

Bemis Company in its sale to Amcor Limited.*

Martin Marietta Materials in its acquisition of Bluegrass Materials Company.*

An international specialty chemical company in its acquisition of a U.S. competitor.*

A private label food manufacturer in its acquisition of a private label division of a competitor.*

A data and telecommunications equipment provider in several acquisitions of competitors.*

A nonprofit hospital in its acquisition of a competing local hospital.*

A major alcohol beverage company in its compliance with consent agreements with the Department of Justice requiring purchase and expansion of a brewing facility.*

An engineered materials manufacturer in a Department of Justice investigation into a consummated merger.*

A steel company in class action lawsuit alleging price fixing and coordinated output reductions.*

A containerboard producer in a class action lawsuit alleging price fixing and coordinated capacity reduction.*

* Denotes prior firm experience.

Published Work

  • Co-Author, "Merger Remedies in the US: An overview of the leading cases", Concurrences (July 2022)
  • Co-Author, "How to Deal with New Vertical Merger Enforcement Risks",Law360 (February 2018)
  • Co-Author, "Antitrust Concerns in Defense Transactions Under Trump", Law360 (December 2016)

Leadership Positions And Professional Affiliations

  • American Bar Association, Section of Antitrust Law
  • Corporate Counseling Committee, Young Lawyer Representative 2020-2021, 2023-2024



Attorney-at-Law, District of Columbia

Attorney-at-Law, New York

Attorney-at-Law, New Jersey


United States District Court for the District of Columbia


Tulane University Law School J.D., magna cum laude

Order of the Coif
Managing Editor, Tulane Law Review
Senior Articles Editor, The Sports Lawyer

The Wharton School University of Pennsylvania B.S., cum laude

University of Pennsylvania B.A., cum laude

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.