Summary by Moomoo AI
AT&T Inc. has filed definitive additional materials with the United States Securities and Exchange Commission (SEC) as part of its proxy statement schedule 14A, pursuant to Section 14(a) of the Securities Exchange Act of 1934. This filing, which is not a preliminary proxy statement and does not require a filing fee, is an amendment to the company's proxy materials. The materials are intended for further informing AT&T's shareholders in relation to the proxy solicitation process. The definitive additional materials indicate that AT&T is in the process of finalizing its proxy statement for upcoming shareholder meetings or decisions.