Publications Memos Go Back Final Rules Detailing Merger Filing Thresholds for New Competition Law In China Issued August 4, 2008 08.06.08 Related Insights 02.24.26 | Publications UK Securitisation Reform 2026: What FCA and PRA Proposals Mean for Market Participants 01.15.26 | Publications Simpson Thacher Sustainability and ESG: Regulatory Update – January 2026 12.15.25 | Publications Simpson Thacher Sustainability and ESG: Regulatory Update – December 2025 Related Services Related Practice Areas Corporate Mergers and Acquisitions Antitrust and Trade Regulation