Thomas Ingalls

Member

Thomas focuses his practice on complex litigation matters and investigations, including white collar criminal defense, civil antitrust litigation, premerger review, and internal investigations. He represents companies and individuals in both criminal and civil matters. Thomas also maintains an active pro bono practice and has appeared in state and immigration court on behalf of clients seeking asylum.

Thomas received his J.D., magna cum laude, from The George Washington University Law School, where he was a Dean’s Fellow, an associate on The George Washington Law Review, and elected to the Order of the Coif. While at GW Law, Thomas interned for the Honorable Kathryn A. Oberly of the District of Columbia Court of Appeals and the Honorable Alfred S. Irving, Jr. of the Superior Court of the District of Columbia. Thomas received his Bachelor of Arts, magna cum laude, from Macalester College, where he was a member of Phi Beta Kappa.

Experience

News

Best Lawyers Honors More Than 200 Cozen O'Connor Attorneys in its Best Lawyers in America 2025 Edition

August 15, 2024

Best Lawyers selected 242 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2025 edition of The Best Lawyers in America and Best Lawyers: Ones to Watch in America.

Eleven Cozen O’Connor Attorneys Recognized as Washington, D.C., Super Lawyers and Rising Stars

April 22, 2024

Seven attorneys were recognized as Super Lawyers and four were named Rising Stars, a list that recognizes attorneys under the age of 40.

14 Cozen O'Connor Attorneys Named 2023 D.C. Super Lawyers and Rising Stars

May 30, 2023

Super Lawyers has named 14 Cozen O’Connor attorneys to its 2023 Washington D.C. Super Lawyers and Rising Stars lists.

13 Cozen O'Connor Attorneys Named 2022 D.C. Super Lawyers and Rising Stars

July 12, 2022

Super Lawyers has named 13 Cozen O’Connor attorneys to its 2022 Washington D.C. Super Lawyers and Rising Stars lists.

Cozen O'Connor Promotes 28 Attorneys to Member

March 25, 2022

Cozen O'Connor promoted 28 attorneys to member in March.

Twelve Cozen O’Connor Attorneys Recognized as Washington, D.C., Super Lawyers and Rising Stars

May 05, 2021

Super Lawyers has named 12 Cozen O'Connor attorneys to its 2021 Washington, D.C., Super Lawyers and Rising Stars list.

Fourteen Cozen O’Connor Attorneys Recognized as Washington, D.C., Super Lawyers and Rising Stars

April 20, 2020

Super Lawyers has named 14 Cozen O'Connor attorneys to its 2020 Washington, D.C., Super Lawyers and Rising Stars list.

Publications

DOJ Antitrust Division Endorses International Cooperation in Cartel Investigations [Alert]

August 20, 2020

J. Bruce Maffeo, Nicole H. Sprinzen, and Thomas Ingalls discuss the DOJ's the Guidance on Enhancing Cross-Border Leniency Cooperation.

Updated Government Guidance on Vertical Mergers [Alert]

July 15, 2020

Thomas Ingalls discusses the DOJ and FTC's new Vertical Merger Guidelines setting forth how they intend to analyze mergers between companies at different levels in a distribution chain.

United States-Mexico-Canada Agreement – A Tool to Fight Corruption

February 20, 2020

Rachel Collins-Clarke and Thomas Ingalls discuss the USMCA and why companies would be wise to proactively update their compliance programs in light of the recommendations contained within it.

Jury Finds Executive Acted As An Agent, Giving DOJ New Leverage To Pursue Foreign Nationals

November 11, 2019

Martin S. Bloor and Thomas Ingalls discuss a recent verdict and how it could be a new way of prosecuting foreign executives of international companies for FCPA violations even if they are never present in the United States.

DOJ Antitrust Division Now Gives Credit for Compliance Program in Cartel Investigations

July 22, 2019

Nicole H. Sprinzen and Thomas Ingalls discuss how, under the new Antitrust Division policy, an effective compliance policy would prevent antitrust violations but also remediate them when they do occur.

Events & Seminars

Upcoming Events

Health Care & Life Sciences 2025

December 05, 2024 - Philadelphia, PA

Cozen O'Connor will host Health Care & Life Sciences 2025, our annual in-person seminar exploring critical issues impacting health care and life sciences businesses.

Past Events

Health Law 2024

December 05, 2023 - Philadelphia, PA

Recent Developments in Antitrust Law

October 12, 2022 - Webinar

Education

  • George Washington University Law School, J.D., magna cum laude, 2014
  • Macalester College, B.A., magna cum laude, 2008

Awards & Honors

DC Super Lawyers’ Rising Stars (White Collar Defense & Investigations): 2020-2024

Best Lawyers in America "Ones to Watch" 2025

  • Virginia
  • District of Columbia
  • Minnesota
  • North Dakota
  • U.S. District Court -- Eastern District of Virginia
  • U.S. District Court -- Western District of Virginia
  • U.S. District Court -- Eastern District of Michigan
  • U.S. District Court -- District of Columbia

National LGBT Bar Association

LGBT Bar Association of DC

ABA Section of Antitrust Law

Executive Board Member, William B. Bryant Inn of Court