Summary by Moomoo AI
United Airlines Holdings, Inc. has filed definitive additional materials with the United States Securities and Exchange Commission (SEC) as part of its proxy statement. This filing, pursuant to Section 14(a) of the Securities Exchange Act of 1934, indicates that the materials are intended for further communication with the company's shareholders in relation to the proxy solicitation. The document, identified as DEFA14A, was filed by United Airlines Holdings, Inc. itself, with no third parties involved in the submission. The company has confirmed that no filing fee was required for this submission.