4043.T earnings: revenue missed by 8.8%

Guidance “As of Mar 31,2026 As of Jun 30,2026 Changes Amount % Total assets 569.6 577.9 +8.2 +1 Current assets 212.0 215.8 +3.7 +2 Tangible fixed assets 190.2 192.8 +2.5 +1 Intangible fixed assets 75.5 75.0 (0.5) (0) Investments and other assets 91.7 94.2 +2.5 +3 As of Mar 31,2026 As of Jun 30,2026 Changes Amount % Total liabilities 271.8 275.9 +4.1 +2 Current liabilities 121.4 124.1 +2.6 +2 Long-term liabilities 150.3 151.8 +1.4 +1 Total net assets 297.8 301.9 +4.1 +1 24 Consolidated Financial Statements Balance Sheets (Billions of yen) Appendix © Tokuyama Corporation All rights reserved. 25 106.2 120.0 9.7 10.0 9% 8% FY2025 Results FY2026 Forecasts 27.4 24.8 26.8 27.0 24.6 2.8 2.8 2.1 1.8 0.5 Q1/FY25 Q2/FY25 Q3/FY25 Q4/FY25 Q1/FY26 Chemicals Higher earnings on higher sales Operating Profit Margin Performance Forecasts by Business Segment (Billions of yen) Net sales Operating profit Qualitative information • The business environment expected to remain difficult from a profitability perspective, in light of such factors as trends in raw material and fuel prices, as well as overseas market conditions for the Company’s major products • Under these circumstances, Tokuyama will work diligently to secure earnings in the Chemicals segment by strengthening competitiveness through reductions in manufacturing costs and implementing measures that address changes in the business environment Appendix © Tokuyama Corporation All rights reserved. 26 66.8 67.0 9.5 7.0 14% 10% 16.0 16.3 17.8 16.6 16.0 2.5 2.3 2.4 2.2 2.5 Q1/FY25 Q2/FY25 Q3/FY25 Q4/FY25 Q1/FY26 Cement Lower earnings on higher sales Operating Profit Margin FY2025 Results FY2026 Forecasts Performance Forecasts by Business Segment (Billions of yen) Net sales Operating profit Qualitative information • In light of changes in the business environment, resolved to transfer the domestic sales business for cement and solidification agents; prioritizing efforts aimed at minimizing the impact on the supply chain while moving forward with preparations for closing on October 1, 2026 *Forecast data for fiscal 2026 excludes the impact of the transfer of the domestic sales business for cement and solidification agents Appendix © Tokuyama Corporation All rights reserved. 27 91.6 106.5 15.6 16.0 17% 15% 21.2 21.3 20.8 28.2 22.3 2.8 4.1 3.4 5.2 3.1 Q1/FY25 Q2/FY25 Q3/FY25 Q4/FY25 Q1/FY26 Electronic & Advanced Materials Higher earnings on higher sales Operating Profit Margin FY2025 Results FY2026 Forecasts Performance Forecasts by Business Segment (Billions of yen) Net sales Operating profit Qualitative information • Despite a full-scale recovery in the general-purpose segment taking a certain amount of time, the semiconductor market is expected to experience growing demand over the medium to long term, driven by such factors as the boom in AI data centers • Further enhance the Group’s significance in cutting-edge fields by strengthening its global network and working to differentiate itself through quality Appendix © Tokuyama Corporation All rights reserved. 49.3 63.0 7.8 11.5 16% 18% 28 9.0 10.1 14.3 15.7 14.6 1.7 2.3 1.6 2.1 2.6 Q1/FY25 Q2/FY25 Q3/FY25 Q4/FY25 Q1/FY26 Life Science Higher earnings on higher sales Operating Profit Margin FY2025 Results FY2026 Forecasts Performance Forecasts by Business Segment (Billions of yen) Net sales Operating profit Qualitative information (Dental materials / Plastic lens-related materials) • Earnings earnings increased thanks to robust sales volumes and the impact of movements in foreign currency exchange rates as a result of the weak yen (Diagnostic) • In addition to expanding earnings following the inclusion of TLS Group in the Company’s scope of consolidation from the second half of fiscal 2025, promote in vitro diagnostic reagents Appendix © Tokuyama Corporation All rights reserved. 6.1 6.5 0.6 0.5 11% 8% 29 1.4 1.2 1.5 1.9 1.0 0.1 0.0 0.1 0.2 (0.0) Q1/FY25 Q2/FY25 Q3/FY25 Q4/FY25 Q1/FY26 Eco Business Lower earnings on higher sales Operating Profit Margin FY2025 Results FY2026 Forecasts Performance Forecasts by Business Segment (Billions of yen) Net sales Operating profit Qualitative information • We will accelerate the expansion of existing businesses, such as ion-exchange membranes and waste gypsum board recycling, that contribute to the realization of a sustainable society • Building on a distinctive technology platform toward the Tokuyama Group’s next pillar of growth Appendix © Tokuyama Corporation All rights reserved. 244.1 263.4 256.4 238.7 206.5 250.0 254.5 250.8 257.5 63.9 61.2 59.6 63.6 87.3 101.7 87.4 92.2 91.8 308.0 324.6 316.0 3024.0 293.8 351.7 341.9 343.0 349.3 392.0 0.0 100.0 200.0 300.0 400.0 FY2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 19.6 34.2 19.9 24.5 28.0 9.3 17.7 23.3 22.2 26.0 41.2 35.2 34.2 30.9 24.5 14.3 25.6 29.9 37.0 34.0 0.0 30.0 60.0 FY2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 ■ Profit attributable to owners of parents■Operating profit 30 Performance Trend Net sales (Billions of yen) (Billions of yen) Forecast Forecast Appendix © Tokuyama Corporation All rights reserved. 31 Net sales FY2025 FY2026 Q1 Q2 Q3 Q4 Q1 Consolidated Results 81.8 81.9 87.7 97.9 85.6 Chemicals 27.4 24.8 26.8 27.0 24.6 Cement 16.0 16.3 17.8 16.6 16.0 Electronic & Advanced Materials 21.2 21.3 20.8 28.2 22.3 Life Science 9.0 10.1 14.3 15.7 14.6 Eco Business 1.4 1.2 1.5 1.9 1.0 Operating profit FY2025 FY2026 Q1 Q2 Q3 Q4 Q1 Consolidated Results 7.8 11.2 5.5 12.3 6.0 Chemicals 2.8 2.8 2.1 1.8 0.5 Cement 2.5 2.3 2.4 2.2 2.5 Electronic & Advanced Materials 2.8 4.1 3.4 5.2 3.1 Life Science 1.7 2.3 1.6 2.1 2.6 Eco Business 0.1 0.0 0.1 0.2 (0.0) (Billions of yen) Performance Trend by Business Segment Appendix © Tokuyama Corporation All rights reserved. 15.9 18.5 23.7 26.4 33.3 35.6 29.7 24.6 32.7 46.1 13.9 15.0 16.1 17.0 19.7 20.7 17.6 19.6 20.9 23.8 7.9 8.0 9.1 10.8 12.6 13.6 14.4 16.0 17.7 21.3 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 FY2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 CAPEX Depreciatin R&D expenses 32 CAPEX, Depreciation and R&D Expenses Trend Forecast (Billions of yen) *The depreciation method for property, plant and equipment was changed from the declining balance method to the straight-line method from fiscal year 2023 Appendix © Tokuyama Corporation All rights reserved. 61.8 38.5 52.3 43.3 25.9 (11.8) 55.8 52.3 50.9 (12.6) (16.1) (20.5) (19.2) (33.7) (33.7) (30.4) (23.4) (122.9) 49.2 22.3 31.8 24.0 (7.8) (45.5) 25.4 28.8 (71.9) (150.0) (100.0) (50.0) 0.0 50.0 100.0 FY2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 Operating CF Investing CF Free CF 33 Forecast (Billions of yen) Cash Flow Trend *Forecast data for fiscal 2026 excludes the impact of the transfer of the domestic sales business for cement and solidification agents Appendix © Tokuyama Corporation All rights reserved.”

Guidance “While the impact of the Middle East situation is unavoidable, we are securing earnings mainly in the Life Science and the Electronic & Advanced Materials segment Segment Business environment (Updates from the information disclosedfor the fiscal year ending March 2026 are in blue) Chemicals ・Weak domestic demand ・Weak PVC market conditions despite rising costs, due to inflows of lower-priced imported products ・Despite the procurement of such raw materials as ethylene returning to normal from the second quarter of 2026, domestic naphtha prices are projected to remain at high levels throughout fiscal 2026 ・Continued increases in manufacturing costs, logistics expenses, and other costs across a wide range of products, including soda ash and caustic soda Cement ・Contracting domestic demand (30 million tons/year*) ・Higher coal prices ・Clearance of antitrust review for the transfer of the domestic sales business for cement and solidification agents.”