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 10.27.26 | Publications Treasury Issues Proposed Rule to Implement the COINS Act and Expand the Outbound Investment Security Program 10.09.26 | Publications Treasury Announces First Enforcement Penalty for Violation of the Outbound Investment Security Program 10.08.26 | Publications The Ad Standard: Monthly Update - October 2026 Related Services Related Practice Areas Litigation Antitrust and Trade Regulation Complex Commercial Litigation