Publications Memos Go Back Amendments and Proposed Rules to Hart-Scott-Rodino Act 01.29.01 This memorandum discusses the most significant amendments to the Hart-Scott-Rodino Antitrust Improvements Act of 1976 for implementation on February 1, 2001. Related Insights 05.23.25 | Publications Supreme Court: Settles Circuit Split on Pleading Standards for Prohibited-Transaction Claims 05.20.25 | Publications New Guidance From the SEC’s Division of Trading and Markets Signals a Welcome Shift on the SEC’s Approach to Crypto Asset Activities and Distributed Ledger Technology 05.15.25 | Publications Simpson Thacher Sustainability and ESG: Regulatory Update – May 2025 Related Services Related Practice Areas Litigation Antitrust and Trade Regulation Complex Commercial Litigation