The new premerger filing form and rules for complying with the Hart-Scott-Rodino Act (HSR Act) are now effective. While a legal challenge to the changes remains pending, any revisions or recissions by a federal court or the Trump Administration’s Federal Trade Commission or Antitrust Division leadership have not stopped today’s implementation.
As such, parties to all M&A transactions that require an HSR Act filing must use the new notification forms, which require the submission of substantially more information and documents. Parties should be prepared to spend additional time and to incur increased costs associated with HSR Act compliance.

The Federal Trade Commission has just announced its annual adjustment to the notification thresholds that determine whether proposed transactions may trigger a filing obligation under the Hart-Scott-Rodino (HSR) Antitrust Improvements Act of 1976, as amended. The corresponding adjustments to the HSR filing fee schedule also were included in the announcement. The adjusted notification thresholds and filing-fee schedule will apply to transactions that close on or after the effective date, which will be 30 days after publication in the Federal Register and no earlier than 12 February 2025.