Payment of Interim Dividend for the first half of 2026

Dividend payment / Omitted dividend payment Subject : Cash dividend payment Date of Board resolution : 31-Jul-2026 Type of dividend payment : Cash dividend payment Record date for the right to receive : 17-Aug-2026 dividends Ex-dividend date : 14-Aug-2026 Payment for : Common shareholders Cash dividend payment (baht per share) : 4.50 Par value (baht) : 1.00 Payment date : 28-Aug-2026 Paid from : Operating period from 01-Jan-2026 to 30-Jun-2026 and retained Earnings Remark : PTT Exploration and Production Public Company Limited, or PTTEP, is pleased to announce that the Board of Directors of the Company, at meeting No. 12/2569/601 held on 31 July 2026, approved the payment of an Interim Dividend based on the consolidated performance of PTTEP and its subsidiaries for the first half of 2026 at the rate of Baht 4.50 per share. The details are as follows; - Dividend at the rate of Baht 3.50 per share, will be paid from unappropriated retained earnings that have been subjected to petroleum income tax under the Petroleum Income Tax Act. Thus, individual shareholders shall not be entitled to a dividend tax credit under Section 47 bis of the Revenue Code and; - Dividend at the rate of Baht 1.00 per share, will be paid from unappropriated retained earnings that have been subjected to corporate income tax under the Revenue Code. Thus, individual shareholders shall be entitled to a dividend tax credit under Section 47 bis of the Revenue Code at a rate of 20% calculated as the dividend amount multiplied by 20/80 ______________________________________________________________________ The company hereby certifies that the information above is correct and complete. Signature _________________ ( Mr.Montri Rawanchaikul ) Chief Executive Officer Authorized person to disclose information ______________________________________________________________________ This announcement was prepared and disseminated by listed company or issuer through the electronic system which is provided for the purpose of dissemination of the information and related documents of listed company or issuer to the Stock Exchange of Thailand only. The Stock Exchange of Thailand has no responsibility for the correctness and completeness of any statements, figures, reports or opinions contained in this announcement, and has no liability for any losses and damages in any cases. In case you have any inquiries or clarification regarding this announcement, please directly contact listed company or issuer who made this announcement. If you would like to see the full details of this information, please click view "full details" in attached file.