Workiva is trading at $55.12, down 21.04%, after falling sharply from its September 22 regular-session close of $69.81; the cause of the after-hours decline remains unconfirmed. - No credible company-specific announcement, earnings release, analyst action, or regulatory filing identified for September 22 explains the move. - Recent coverage called regular-session weakness profit-taking after a rally, but this does not establish the extended-hours cause. The Nasdaq Composite gained 0.62%, while the S&P 500 fell 0.05%; recheck for delayed news.