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 12.05.25 | Publications The Ad Standard: Monthly Update - December 2025 12.04.25 | Publications SEC Division of Examinations Announces 2026 Examination Priorities 11.12.25 | Publications The Constitutionality of the False Claims Act Qui Tam Provisions Remains Uncertain Related Services Related Practice Areas Litigation Antitrust and Trade Regulation Complex Commercial Litigation