Kenneth S. Reinker

Contact:Read more about Kenneth S. Reinker

The following is part of our annual publication Selected Issues for Boards of Directors in 2026. Explore all topics or download the PDF.

Antitrust in 2025 was marked by policy developments and antitrust enforcement that, while remaining aggressive, became less overtly anti-business. The U.S. continued a number of cases from the Biden administration, but became more open to settlements, while continuing implementation of the new and more burdensome HSR merger notification form and of the more aggressive and less economically focused 2023 Merger Guidelines. The European Commission conducted a series of DMA enforcement actions and launched a broad-sweeping consultation on the Merger Guidelines. The UK CMA continued a tack toward a more restrained approach to enforcement, taking greater account of growth and suggesting it would allow greater flexibility in merger remedies. The Chinese State administration for Market Regulation started to intervene in transactions below the filing thresholds and continued to keep antitrust in its toolbox for tackling geo-political tensions.

The following is part of our annual publication Selected Issues for Boards of Directors in 2025. Explore all topics or download the PDF.

Antitrust in 2024 was marked by evolving policy developments, vigorous enforcement, and eye-catching court decisions. In the U.S., an aggressive enforcement approach lead to unpredictability and lengthy merger review process across sectors. In the EU, enforcement of the Digital Markets Act (DMA) intensified scrutiny on digital platforms, while a landmark ruling in the Illumina/GRAIL matter clarified the scope of the EU Commission’s merger jurisdiction. In the UK, the Competition and Markets Authority (CMA) cleared the Vodafone/Three merger with behavioral remedies, signaling a significant departure from its historic practice to require structural remedies. 2025 will see new antitrust leadership on both sides of the Atlantic with an expectation that the U.S. will largely return to a more traditional approach on antitrust under the Trump Administration and that Europe will continue to enforce digital rules and bring cases related to AI with a focus on promoting growth in clean tech and AI sectors.

The following post was originally included as part of our recently published memorandum “Selected Issues for Boards of Directors in 2024”.

Antitrust in 2023 was marked by a series of policy developments—some still nascent, some ripe for enforcement for the first time.  In the U.S., the FTC and DOJ finalized their drastically transformed merger guidelines.  In the EU, landmark new digital regulations became applicable for the first time.  And the UK government introduced a bill promising major new digital and consumer protection rules. 

The recent Consolidated Appropriations Act of 2023 includes significant changes to the filing fees for Hart Scott Rodino Act filings.