Ref. POL. 083/2563 May 15th 2020 Re: Clarification of the Performance of S & P Syndicate Public Company Limited Dear The President The Stock Exchange of Thailand S & P Syndicate Public Company

MD & A - Q3-62 _สอบทาน__EN November 7, 2019 Subject : Management Discussion and Analysis For the second quarter ended 30 September 2019 (reviewed) To : Director and Manager The Stock Exchange of

November 13, 2019 Subject: Managing Discussion and Analysis for Q3/2019 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

Ref. APURE 005/2022 February 24, 2022 Subject : Financial Position and Operating Performance of year 2022 Attention : The Director and President of the Stock Exchange of Thailand Financial Position

higher than the PFA’s assessed fair value of 359 million baht and the internal rate of return (IRR) is lower than OTO’s cost of equity and cost of capital. Moreover, the proposed investment of 150 million

% yoy, +6% qoq) and non- mobile enterprise business grew 13% yoy. We continued on with cost optimization while expanding 5G network which resulted in controlled cost of service (+3% yoy, -0.5% qoq) and

Bt1,588mn, improving 30% YoY and 6.9% QoQ driven by robust demand for Cloud service and ICT solutions. Cost & Expense In 2Q22, the cost of service was Bt21,630mn, increasing 2.9% YoY and 0.4% QoQ mainly from

Disposal of Assets Transaction, and Acquisition of Assets Transaction To : Director and Manager The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Disposal of Komchadluek Business and

แบบแสดงรายการข้อมูลสำหรับการเสนอขายหลักทรัพย์ (แบบ 69-1) 1 No. WHAUP-CS002/2562 February 22, 2019 Attention: Managing Director – Stock Exchange of Thailand Subject: Report of Financial Results for

- ร่าง - 1 May 28, 2019 Subject Management Discussion and Analysis for the year ended 31st March 2019 To President of the Stock Exchange of Thailand Secretary of the Office of Securities and Exchange