Publications Memos Go Back SEC Amends Issuer Common Stock Repurchase Safe Harbor 12.19.03 This memo explains the SEC amendments to Rule 10b-18 which provides a limited safe harbor from claims of market manipulation in the context of issuers repurchasing their own common stock. Related Insights 05.14.26 | Publications SEC Watch: SEC Division Directors on Private Credit Valuation, Retail Investors and AI 05.14.26 | Publications Simpson Thacher Sustainability and ESG: Regulatory Update – May 2026 05.12.26 | Publications EU Securitisation Reforms – May 2026 Related Services Related Practice Areas Corporate Capital Markets Debt