Under the Hart-Scott-Rodino (HSR) Act, parties to certain large mergers and acquisitions must file premerger notification and wait for government review.

This page is designed to capture all resources that provide guidance on the rules, the form and other HSR-related issues.

If the transaction is valued in excess of $50 million (as adjusted) but is $200 million (as adjusted) or less, the size of person test is met, and no exemption applies, an HSR filing must be made …

Sep 26, 2025 · Filing Guidance: The below resources offer general guidance about the HSR Form and how it has changed from the previous version. For guidance on whether and how to file in …

The Commission, in concurrence with the Antitrust Division, has issued the final rule changes to the premerger notification form and associated instructions, as well as the premerger …

Apr 10, 2025 · The HSR Rules outline the requirements for the premerger notification process under the Hart-Scott-Rodino (HSR) Act, which enables the Federal Trade Commission and the …

Oct 10, 2024 · The Federal Trade Commission voted unanimously to finalize changes to the premerger notification form and associated instructions, as well as the premerger notification …

Feb 6, 2025 · Here are the new filing fee thresholds, as well as the adjusted fee amounts, revised in accordance with the 2023 Consolidated Appropriations Act and effective on February 21, 2025:

Aug 31, 2017 · The Hart Scott Rodino (HSR) Act and Rules require that parties to certain mergers and acquisitions submit premerger notification filings and wait before consummating the …

The following rules of thumb should help parties determine the relevant thresholds and any resulting reporting obligations that apply based on when the filing is made, when the …