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Gregory E. Neppl

Partner

Greg Neppl鈥檚 antitrust practice focuses on antitrust counseling, merger analysis and HSR notification preparation, government investigation response, antitrust compliance program development, and litigating antitrust and intellectual property matters. He also counsels numerous hedge funds and other institutional investors pursuing event-driven and risk arbitrage investment strategies. Greg has significant jury and bench trial experience from his private and government practices. He is a partner in Foley鈥檚 Antitrust & Competition, Government Enforcement Defense & Investigations, and Trade Association Practices.

Prior to joining Foley, Greg served as Senior Antitrust and Regulatory Counsel for Litton Industries, Inc., a subsidiary of Northrop Grumman Corporation as of 2001. In that position, he provided day-to-day antitrust counseling to defense and aerospace businesses; advised on teaming agreements, strategic alliances, and patent licenses; prepared HSR notifications and facilitated agency approvals; responded to antitrust agency investigations and inquiries; and developed and implemented antitrust compliance training programs.

Greg also previously served as a Trial Attorney with the Antitrust Division of the U.S. Department of Justice (Litigation II Section). In that role, he conducted numerous civil and criminal antitrust investigations. He also served as Special Assistant U.S. Attorney in Washington, D.C., where he prosecuted criminal matters in D.C. Superior Court. Prior to joining the Department of Justice, Greg practiced as a general commercial litigator in Tampa, Florida.

Awards and Recognition

  • Mondaq Thought Leadership Award for Antitrust/Competition Law (Spring 2025)
  • Peer Review Rated as AV庐 Preeminent鈩, the highest performance rating in Martindale-Hubbell’s peer review rating system

Affiliations

  • Knight, International Order of Saint Hubertus
  • The Federalist Society

Presentations and Publications

  • Author, 鈥淔TC Finalizes Long-Awaited Rules that Will Substantially Increase the Scope and Detail of Premerger Antitrust Filings under Hart-Scott-Rodino Act,鈥 Foley Viewpoints, October 14, 2024.
  • Author, 鈥淒OJ and FTC Release Significantly Expanded Merger Guidelines,鈥 Foley Viewpoints, December 20, 2023.
  • Author, 鈥淒OJ and FTC Propose Comprehensive Overhaul of Merger Guidelines, Including Presumption against Horizontal Mergers that Result in Market Shares Above 30%,鈥 Foley Viewpoints, July 20, 2023.
  • Author, 鈥2022 Antitrust Outlook 鈥 Significant Changes Under the Biden Administration,鈥 Top Legal Issues Facing the Automotive Industry in 2022, Foley Insights, March 17, 2022.
  • Co-author, 鈥淧resident Biden鈥檚 Executive Order on Competition Could Mean Broad Changes Across a Range of Industries,鈥 Foley Insights, July 15, 2021.
  • Author, 鈥2021 Antitrust Outlook 鈥 A New Administration and State Activism Present聽 Enforcement Uncertainty,鈥 Foley Insights, April 7, 2021.
  • Author, 鈥2020 Antitrust Outlook 鈥 Antitrust Agency Divergence, the Standards Debate and State Activism Present Enforcement Uncertainty,鈥 Top Legal Issues Facing the Automotive Industry in 2020, Foley Insights, February 12, 2020.
  • Author, 鈥淒OJ Issues Merger Remedies Manual 鈥 Structural Remedies 鈥楽trongly Preferred鈥,鈥 Foley Insights, September 11, 2020.
  • Co-author, 鈥淔TC and DOJ Issue Final Vertical Merger Guidelines,鈥 Foley Insights, July 22, 2020.
  • Author, 鈥淎ntitrust Enforcement 鈥楻eform鈥 as a Political Issue: The Good, the Bad, and the Ugly,鈥 Foley Insights, November 7, 2019.
  • Author, 鈥淎ntitrust Surprises from DOJ during the Trump Administration 鈥 Predicting the Consequences,鈥 Foley Insights, October 10, 2019.
April 20, 2026 Deals and Wins

Foley Guides Brady Corporation in Acquisition of Honeywell鈥檚 Productivity Solutions and Services Business

番茄社区; Lardner LLP served as legal advisor to Brady Corporation (NYSE: BRC), a world leader in identification solutions, its definitive agreement with Honeywell (Nasdaq: HON) to acquire Honeywell鈥檚 Productivity Solutions and Services (PSS) business.
April 10, 2026 Deals and Wins

Foley Advises Valencia Technologies in Acquisition by Boston Scientific

番茄社区; Lardner LLP served as legal advisor to Valencia Technologies Corporation, a privately held medical technology company focused on developing and commercializing innovative solutions to treat bladder dysfunction, in its acquisition by global medical technology leader Boston Scientific Corporation.
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March 20, 2026 Foley Viewpoints

Federal Court Invalidates Biden-Era HSR Rule

In invalidating the Biden-era changes, the court held that the FTC failed to show that the changes鈥 benefits outweighed their significant costs to merging parties, in particular, to the vast majority (historically, 92%) of parties whose transactions require no antitrust investigation whatsoever.聽
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January 20, 2026 Foley Viewpoints

Hart-Scott-Rodino Reporting Threshold Increases by $7.5 Million After Latest Yearly Adjustment

Because these annual adjustments are pegged to changes in gross national product, the HSR reporting thresholds tend to increase every year, except for periods of recession.
October 10, 2025 In the News

Gregory Neppl Shares Insight on Government Shutdown Impact for M&A Review

番茄社区; Lardner LLP partner Gregory Neppl commented on the federal government shutdown's consequences for pending mergers in the Bloomberg Law article, "Shutdown Threatens to Add Merger Costs, Delay Deal Approvals."
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October 7, 2025

Navigating HSR Filings During a Government Shutdown: What Clients Need to Know

As the federal government enters a shutdown, many clients involved in ongoing transactions are asking: What does this mean for Hart-Scott-Rodino (HSR) filings and antitrust reviews?