Exhibit 99.1 EXHIBITS Exhibit Number Page 99.1 Copies of the disclosure letters that PLDT Inc. (the “Company”) filed on March 27, 2024 with the Philippine Stock Exchange, the Philippine Securities and Exchange Commission, and the Philippine Dealing and Exchange Corporation in connection with the following: (a Press release entitled “PLDT Files 2023 Annual Report ) with Sustainability Report on Form 17-A with the Philippines Securities and Exchange Commission”; and (b Press release entitled “PLDT Files 2023 ...