SEC Rule 10b-5 makes it unlawful to misstate a material fact (or omit to say something if the omission would render misleading what you do say) in connection with the purchase or sale of a security. The Private Securities Litigation Reform Act (PSLRA) created a safe harbor for statements that are forward-looking and accompanied by meaningful cautionary language. In a recent decision, the D.C. Circuit revisited the standard for forward-looking statements, and placed special emphasis on the accompanying cautionary language, holding that statements which fail to account for historical facts cannot be meaningful. The opinion should serve as a timely reminder for companies to review and update their cautionary language.