Lindsey S. Champlin

Practice Areas

Lindsey Champlin, Global Vice Chair of the firm’s Antitrust & Competition Practice, counsels US and international companies on a range of antitrust issues, with a particular focus on securing antitrust clearances for all types of M&A transactions.

Drawing on her vast cross-border experience, Lindsey assists leading companies on their most significant antitrust matters, such as:

- Merger matters, including complex HSR filings and Second Request substantial compliance

- Merger remedy negotiations

- Merger litigation opposite the DOJ and FTC and merger arbitration

- Antitrust conduct and consent decree compliance investigations

She represents clients doing business in diverse industries, from the energy and automotive sectors to industrial equipment and machinery, retail, advertising, and live entertainment.

Lindsey leverages the firms’ global platform to help clients navigate overlapping multijurisdictional antitrust approvals from competition authorities around the world, involving the US Department of Justice (DOJ), the US Federal Trade Commission (FTC), the European Commission, the Canadian Competition Bureau, Mexico’s Comisión Federal de Competencia Económica, and China’s State Administration for Market Regulation.

She regularly counsels clients on competitor collaborations, information sharing, and sales and marketing practices. Lindsey also conducts economic analyses of mergers and other complex antitrust issues.

Lindsey maintains an active pro bono practice and served on Latham’s Pro Bono Committee. She has represented the Polaris Project, an anti-human trafficking organization; a tenant association in litigation involving housing code violations in Washington, D.C.; elder law clients; children in individualized education program proceedings against DC Public Schools; and guided clients through asylum applications.

Lindsey regularly writes and presents on topics related to antitrust law, including for law schools, academic journals, and the American Bar Association.

Lindsey serves as a member of the steering committee for GCR Antitrust Law Leaders Forum and as a member of W@Competition, an organization for women competition professionals.