Publications Memos Go Back HSR Report Form Change to NAICS Codes 05.09.01 This memorandum deals with an interim rule effective July 1, 2001 that implements changes to certain reporting requirements on the Premerger Notification and Report Form under the Hart-Scott-Rodino Act. Related Insights 12.09.25 | Publications Changes to the Outbound Investment Rule On the Horizon 12.08.25 | Publications SEC Watch: Monthly Takeaways for Asset Managers - December 2025 12.05.25 | Publications The Ad Standard: Monthly Update - December 2025 Related Services Related Practice Areas Litigation Antitrust and Trade Regulation Complex Commercial Litigation