Amended Securities Report – 135th Fiscal Period (2025/04/01 – 2026/03/31)

Sumitomo Bakelite Co., Ltd. Amended Securities Report – 135th Fiscal Period (2025/04/01 – 2026/03/31)

This report is an amended securities report submitted by Sumitomo Bakelite Co., Ltd. pursuant to the Financial Instruments and Exchange Act, containing information on the company's business performance, financial condition, and operations for the 135th fiscal period (from April 1, 2025, to March 31, 2026). The amendment is being made because certain financial data in the previously filed report contained errors or required additional disclosures, and this document is being submitted in accordance with regulatory procedures.

The company has long been engaged in the development, manufacturing, and sales of high-performance materials such as phenolic resins, epoxy resins, electronic materials, and automotive-related materials within the chemical industry, supplying products to various industrial sectors both domestically and internationally. The purpose of this report is to ensure transparency in corporate management and provide shareholders, investors, financial institutions, and other stakeholders with essential information for making informed investment decisions.

Key sections of the report include consolidated financial statements, management policies and performance highlights, business overview, financial and funding conditions, capital expenditure status, research and development activities, employee and compensation systems, executive officers, share and shareholder information, and audit-related matters. This information is publicly available via EDINET (Electronic Disclosure for Investors' NET), the Financial Services Agency's electronic disclosure system, and can be freely accessed by the public.

Going forward, the company will continue to comply with relevant regulations and maintain prompt and accurate information disclosure, aiming for enhanced corporate value and sustainable growth.