Summary by Moomoo AI
United States Steel Corporation has filed a DEFA14A with the United States Securities and Exchange Commission (SEC), indicating the dissemination of proxy materials. The filing, which is not accompanied by a filing fee, suggests that the materials are definitive additional materials rather than a preliminary proxy statement or soliciting material. These materials were initially posted to the company's internal news application, X App, on April 9, 2024. The filing is a routine part of corporate governance, allowing shareholders to review pertinent information ahead of voting on corporate matters.