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MITSUI CHEMICALS , INC . Financial Summary Results for 1st Quarter of FY2026 & Outlook for 1st Half of FY2026 Mitsui Chemicals , Inc. < Remarks > FY2026 indicates the period from April 1 , 2026 to March 31 , 2027 . This summary contains forward - looking statements about the future plans , strategies , belief and performance of the Mitsui Chemicals Group as a whole and its individual consolidated companies . These forward - looking statements are not historical facts . They are expectations , estimates , forecasts and projections based on information currently available to the Mitsui Chemicals Group and are subject to a number of risks , uncertainties and assumptions , which , without limitation , include economic trends , fluctuations in foreign currency exchange rates , fluctuations in the price of raw materials , competition in markets where the Company is active , personal consumption , market demand , the tax system and other legislation . As such , actual results may differ materially from those projected and the Mitsui Chemicals Group cannot guarantee that these forward - looking statements are accurate or will be achieved . August 5 , 2026 Copyright © 2026 Mitsui Chemicals , Inc.
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Copyright © 2026 Mitsui Chemicals, Inc. Contents 1. Executive Summary 1）Executive Summary: 1Q FY2026 Financial Results(Operating Income before Special Items) ・・・1 2）Executive Summary: 1H FY2026 Financial Outlook(Operating Income before Special Items) ・・・2 2. Results for 1st Quarter of FY2026 (April 1, 2026 – June 30, 2026) 1) Trends of Key Market Indicators ･･･ 4 2) Major Investment Projects, etc. ･･･ 5 3) Consolidated Financial Highlights ･･･ 6-7 4) Sales Revenue and Operating Income before Special Items by Business Segment (compared with corresponding period of FY2025 results) ･･･ 8 5) Operating Income before Special Items and Business Overview by Business Segment (compared with corresponding period of FY2025 results) ･･･ 9-12 6) Non-recurring Items ･･･ 13 7) Consolidated Statement of Financial Position ･･･ 14 8) Consolidated Statement of Cash Flows ･･･ 15 3. Outlook for 1st Half of FY2026 (April 1, 2026 – September 30, 2026) 1) Highlights of Consolidated Financial Outlook ･･･ 17-18 2) Sales Revenue and Operating Income before Special Items by Business Segment (compared with corresponding period of FY2025 results) ・・・ 19 3) Operating Income before Special Items and Business Overview by Business Segment (compared with corresponding period of FY2025 results) ・・・ 20ー23 4) Consolidated Statement of Cash Flows ・・・ 24 4. Appendix ・・・ 26ー31 Please note that this document has been translated from the original Japanese into English for the convenience of our stakeholders. In the event of any discrepancy between the Japanese original and the English translation, the Japanese original shall prevail.
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Copyright © 2026 Mitsui Chemicals, Inc. 1. Executive Summary
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Copyright © 2026 Mitsui Chemicals, Inc. 26.6 50.1 0 10 20 30 40 50 60 FY25 1Q FY26 1Q 2.6 2.9 (2.6) 29.8 32.7 FY25 1Q Volume Terms of trade Costs, etc. FY26 1Q (2.9) 19.8 -5 0 5 10 15 20 25 FY25 1Q FY26 1Q １ １）Executive Summary：1Q FY2026 Financial Results (Operating Income before Special Items) Specialty chemicals domainsTotal ■Operating income before special items +2.9 +10% +23.5 ➢ The domestic standard naphtha price in 1Q FY2026 was 118,900 yen/KL, a significant increase of 52,500 yen/KL YoY. ➢ Entire Group: Operating income before special items increased to 50.1 billion yen in 1Q FY2026, up 23.5 billion yen YoY. This was driven bysales volume growth in the specialty chemicals domains, benefits from business restructuring, gains from yen depreciation, and temporary inventory valuation gains and other factors arising from higher naphtha prices, mainly in Basic & Green Materials (B&GM), despite the negative impact of the Middle East conflict. • Specialty chemicals domains: Operating income before special items rose to 32.7 billion yen, up 2.9 billion yen (+10%) YoY , as firm sales volumes in Life & Healthcare Solutions and ICT Solutions and gains from yen depreciation more than offset the negative impact of the Middle East conflict, mainly in Mobility Solutions. • B&GM: Operating income before special items was 19.8 billion yen, up 22.7 billion yen YoY. This was driven by benefits from business restructuring implemented in FY2025, rationalization, and other measures, as well as temporary inventory valuation gains and other factors arising from higher naphtha prices, despite the negative impact of the Middle East conflict. • The impact of the Middle East conflict* was negative approximately 5 billion yen, arising largely from production cutbacks, reduced sales, and deterioration in production yields and energy efficiency, mainly in B&GM and Mobility Solutions. (*Excluding inventory valuation gains and losses and other factors due to fluctuations in raw material prices.) B&GM +22.7 1. Executive Summary (Billions of Yen) () Denotes a minus Naphtha price 66,400 Yen/KL 118,900 Yen/KL
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Copyright © 2026 Mitsui Chemicals, Inc. 44.5 76.0 0 10 20 30 40 50 60 70 80 FY25 1H FY26 1H Outlook 1.0 10.5 (2.3) 56.8 66.0 FY25 1H Volume Terms of trade Costs, etc. FY26 1H Outlook (10.5) 15.0 -15 -10 -5 0 5 10 15 20 FY25 1H FY26 1H Outlook2 ２） Executive Summary ：1H FY2026 Financial Outlook (Operating Income before Special Items) ➢ The domestic standard naphtha price for 1H FY2026 is expected to be 104,500 yen/KL, up 39,600 yen/KL YoY. (2Q assumption: 90,000 yen/KL; down approximately 29,000 yen/KL from 1Q) ➢ Entire Group: Operating income before special items is expected to be 76.0 billion yen in 1H FY2026, an increase of 31.5 billion yen YoY. We expect business growth in the specialty chemicals domains, benefits from business restructuring, gains from yen depreciation, and temporary inventory valuation gains and other factors arising from higher naphtha prices, mainly in Basic & Green Materials (B&GM), despite the negative impact of the Middle East conflict. • Specialty chemicals domains: Operating income before special items is expected to be 66.0 billion yen, an increase of 9.2 billion yen (+16%) YoY, driven by sales volume growth in ICT Solutions, gains from yen depreciation, and other factors, despite the negative impact of the Middle East conflict and higher depreciation expenses resulting from capacity expansion, mainly in Mobility Solutions. • B&GM: Operating income before special items is expected to be 15.0 billion yen, an increase of 25.5 billion yen YoY, reflecting benefits from business restructuring implemented in FY2025, rationalization, and other measures, as well as temporary inventory valuation gains and other factors arising from higher naphtha prices, despite the negative impact of the Middle East conflict. • The impact of the Middle East conflict* is expected to be negative approximately 6 billion yen, arising largely from production cutbacks, reduced sales, and deterioration in production yields and energy efficiency, mainly in B&GM and Mobility Solutions. (*Excluding inventory valuation gains and losses and other factors due to fluctuations in raw material prices.) B&GM +25.5 +9.2 +16% +31.5 ■Operating income before special items (Billions of Yen) () Denotes a minusTotal Specialty chemicals domains 1. Executive Summary Naphtha price 64,900 Yen/KL 104,500 Yen/KL
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Copyright © 2026 Mitsui Chemicals, Inc. 2. Results for 1st Quarter of FY2026 (April 1, 2026 – June 30, 2026)
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Copyright © 2026 Mitsui Chemicals, Inc. 1Q 2Q 1Q→ 2Q Ophthalmic lens materials market Generally firm demand Generally firm demand expected Firm demand (demand growth for high- refractive-index lenses) Agrochemicals market Firm demand; inventory level adjustments seen in some regions Firm demand expected; inventory level adjustments seen in some regions Generally firm demand Automotive production (Global) * Japan North America China ASEAN Europe Semiconductor market Firm demand Firm demand expected Firm demand Smartphone market Contracted due to soaring memory chip prices Contraction expected due to soaring memory chip prices Affected by memory chip prices Basic ＆ Green Materials Naphtha cracker operating rates Low operating rate due to Middle East conflict Recovery expected from 26.1Q Affected by the Middle East conflict * Estimated from data by external information services Generally unchanged ICT Solutions No significant change in global production volume No significant change in global production volume expected Life ＆ Healthcare Solutions Mobility Solutions FY2026 1H (changes from FY2025 1H)Key Market FY20264 1) Trends of Key Market Indicators 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. Capacity expansion of MR™ High Refractive Index Ophthalmic Lens Material@Japan (Announced on January 15, 2025) 1H FY28 - Capacity expansion of MR™ High Refractive Index Ophthalmic Lens Material@Japan (Announced on June 3, 2026) 1H FY29 - DNA Chip Research Inc.: wholly owned subsidiary 1Q FY25 - Acquisition of Ultradent Products, Inc.@USA 2Q FY26 (scheduled) Establishment of new TAFMER™ plant@Singapore April.'26 120KT New plant for high-performance PP@Japan 2H FY26 200KT Capacity expansion of ICROS™ Tape@Taiwan June.'24 3.8MM㎡ Splitting of Mitsui Chemicals Tohcello and transfer of a portion of its shares April.'24 - Capacity expansion of Polyurethane Dispersions (PUD) @Japan June.'25 +100% Capacity expansion of special isocyanate XDI @Japan September.'25 +20% Production facilities for CNT pellicles for use in next-gen EUV lithography @Japan October.'26 5,000 sheets Investment to strengthen materials development in semiconductor & assembly solutions March.'25 - Capacity expansion of MDI, Kumho Mitsui Chemicals @Korea September.'24 200KT Capacity expansion of MDI, Kumho Mitsui Chemicals @Korea (Announced on December 15, 2025) May.'27 100KT Establishment of second CVC fund(321Catalyst™) May.'25 - Restructuring Shutdown of PET Production @Japan October.'24 145KT Optimization of TDI production capacity @Japan July.'25 120KT→50KT Shutdown of Phenol Plant at Ichihara Works @Japan October.'25 190KT Transfer of Equity Interest of PH business joint venture@China October.'25 - Integration of domestic Polyolefins business July.'26 Joint deliberations on consolidation of Chiba ethylene complexes to optimize production FY27 - Promote decarbonization and optimize production capacity of ethylene production in western Japan Around FY30 - Share transfer of Mobility Solutions segment subsidiary @Japan (Industrial materials) April.'25 - Share transfer of ICT Solutions segment subsidiary @Japan September.'24 Shutdown of nitrogen trifluoride (NF3) production @Japan March.'26 - FY27~FY25 FY26 Mobility Solutions Major Investment projects Date Capacity Life & Healthcare Solutions ICT Solutions New business /New products FY24 B＆GM 2) Major Investment Projects, etc. 5 Commercial operation launched in FY26, etc. Shutdown Share transfer Optimization Shutdown Optimization Shutdown Transfer of Equity Interest Decision made in FY26 Share transfer Optimization Optimization 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 6 3-1) Consolidated Financial Highlights (Billions of Yen) () Denotes a minus FY2025 1Q FY2026 1Q Increase (Decrease) % 415.4 460.0 44.6 11% 26.6 50.1 23.5 88% 4.4 6.9 2.5 57% (13.8) (1.7) 12.1 - 12.8 48.4 35.6 280% (2.8) (0.7) 2.1 - 10.0 47.7 37.7 379% 0.7 32.1 31.4 - Exchange rate (Yen/US$) 145 159 ＋ 14 Domestic standard naphtha price (Yen/KL) 66,400 118,900 ＋ 52,500 Items Sales revenue Operating income before special items Non-recurring items Operating income (inc. Equity in earnings) Income before taxes Net income attributable to owners of the parent Financial incomes/expenses 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 29.8 49.8 32.7 (2.9) 19.8 26.6 50.1 -4 6 16 26 36 46 56 Terms of trade +22.9 Costs, etc. +0.3 ・Inventory valuation [+] ・Foreign exchange impact [+] ・Mid-East conflict [-] 7 [+] denotes profit trigger [-] denotes loss trigger +23.5 (Billions of Yen) () Denotes a minus FY25.1Q FY26.1QOthers Specialty chemicals domains Volume +0.3 YoY 3-2) Consolidated Financial Highlights (Operating Income before Special Items) Basic & Green Materials ・Vision care [+] ・Semiconductor applications [+] ・Mid-East conflict [-] Basic & Green Materials ＋2.9 Specialty chemicals domains Others Specialty chemicals domains ・Business restructuring [+] ・Equity in earnings[+] ・Capacity expansion [-] Volume Terms of trade Costs, etc. Decline in sales volume due to production cutbacks caused by the Middle East conflict. Deterioration in production yields and energy efficiency due to production cutbacks caused by the Middle East conflict. Increase in fixed costs, such as depreciation expenses, due to capacity expansions. ・Vision care materials increased, driven by growing demand for high-refractive-index lenses. ・Semiconductor applications increased due to growing demand in the cutting-edge applications, driven by the expansion of generative AI. ・Temporary inventory valuation gains and other factors due to higher raw material prices. ・Terms of trade improved, reflecting foreign exchange impact. ・Improvement in profitability from business restructuring. ・Improvement in equity in earnings. Factors Comments Main factors contributing to the increase[+] Main factors contributing to the decrease[-] 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 4) Sales Revenue and Operating Income before Special Items by Business Segment (compared with corresponding period of FY2025 results) 8 (ROS:10.7%) (11.6%) (Billions of Yen) () Denotes a minus FY2025 1Q FY2026 1Q Incr. (Decr.) FY2025 1Q FY2026 1Q Incr. (Decr.) Volume Terms of trade Costs Life & Healthcare Solutions 56.3 62.2 5.9 6.2 6.8 0.6 2.1 (0.5) (1.0) Mobility Solutions 130.2 142.5 12.3 14.6 14.8 0.2 (1.2) 2.4 (1.0) ICT Solutions 69.0 77.8 8.8 9.0 11.1 2.1 1.7 1.0 (0.6) Specialty chemicals domains 255.5 282.5 27.0 29.8 32.7 2.9 2.6 2.9 (2.6) Basic & Green Materials 156.2 173.6 17.4 (2.9) 19.8 22.7 (2.3) 20.0 5.0 Others 3.7 3.9 0.2 (0.3) (2.4) (2.1) - - (2.1) Total 415.4 460.0 44.6 26.6 50.1 23.5 0.3 22.9 0.3 Segment Sales revenue Operating income before special items Breakdown[11.6%][ROS:11.7%] 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 6.2 6.8 FY25.1Q FY26.1Q Volume +2.1 Terms of trade (0.5) Costs, etc. (1.0) ・Vision care [+] ・Agrochemicals [+] () Denotes a minus ＋0.6 5-1) Life & Healthcare Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) ・Restructuring [＋] ・Costs [-] 9 (Billions of Yen) Trend Vision care [+] Sales volume [-] Costs Oral care [+] Restructuring Agrochemicals [+] Sales volume [-] Costs Business Overview of FY26.1Q Movement of Operating Income before Special Items Main factors contributing to the increase[＋] Main factors contributing to the decrease[-] Volume increased, driven by growing demand for high-refractive-index lenses Costs increased, associated with capacity expansion initiatives - -Sales remained firm mainly in the domestic market Comments [+] denotes profit trigger [-] denotes loss trigger Improvement in profitability from business restructuring 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 14.6 14.8 FY25.1Q FY26.1Q Volume (1.2) Terms of trade +2.4 Costs, etc. (1.0) () Denotes a minus +0.2 10 5-2) Mobility Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) ・Capacity expansions [-] ・Restructuring [＋] (Billions of Yen) Trend Elastomers [-] Sales volume [+] Foreign exchange impact [-] Costs Composite materials (PP compounds, Performance compounds) [+] Foreign exchange impact [+] Inventory Solutions business [-] Sales volume [+] Restructuring Comments [+] denotes profit trigger [-] denotes loss trigger Decrease in orders received due to reduction of development spending by OEMs caused by the Middle East conflict Business Overview of FY26.1Q Movement of Operating Income before Special Items Main factors contributing to the increase[＋] Main factors contributing to the decrease[-] Terms of trade improved, reflecting foreign exchange impact ・Decline in sales volume due to production cutbacks caused by the Middle East conflict ・Fixed costs increased, such as depreciation expenses, due to capacity expansions ・Terms of trade improved, reflecting foreign exchange impact ・Temporary inventory valuation gains and other factors due to higher raw material prices ー Improvement in profitability from business restructuring ・Foreign exchange impact [+] ・Inventory [＋] ・Mid-East conflict [-] 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 9.0 11.1 ・Semiconductor & optical materials [+] ・ICT films & sheets [+] Volume +1.7 Terms of trade +1.0 Costs, etc. (0.6)・Foreign exchange impact [+] ＋2.1 5-3) ICT Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) FY25.1Q FY26.1Q11 ・Costs [+] ・Inventory [-] (Billions of Yen) Trend Semiconductor & optical materials [+] Sales volume [+] Foreign exchange impact [-] Inventory Coating ＆ engineering materials [+] Foreign exchange impact [-] Inventory ICT films & sheets [+] Sales volume [+] Foreign exchange impact Nonwovens [＋] Costs Business Overview of FY26.1Q Movement of Operating Income before Special Items ・Demand growth, particularly in semiconductor markets ・Terms of trade improved, reflecting foreign exchange impact ー Reduction in fixed costs ー Terms of trade improved, reflecting foreign exchange impact ー Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase[＋] Main factors contributing to the decrease[-] ・Demand growth, particularly in semiconductor markets ・Terms of trade improved, reflecting foreign exchange impact ー () Denotes a minus 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. (2.9) 19.8 Mid-East conflict approx. (3) Restructuring, Rationalization, etc. approx. +8 () Denotes a minus+22.7 12 5-5) Basic & Green Materials: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) (Billions of Yen) Trend Petrochemicals [-] Sales volume [-] Terms of trade [+] Inventory valuation Basic chemicals [-] Sales volume [+] Restructuring [+] Inventory valuation Polyurethanes [+] Restructuring [+] Equity in earnings Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase[＋] Main factors contributing to the decrease[-] ・Temporary inventory valuation gains and other factors due to higher raw material prices ・Contribution from rationalization efforts, etc. Decline in sales volume and deterioration in production yields and energy efficiency due to production cutbacks caused by the Middle East conflict ・Temporary inventory valuation gains and other factors due to higher raw material prices. ・Improvement in profitability from business restructuring and rationalization efforts, etc. Decline in sales volume due to production cutbacks caused by the Middle East conflict ・Improvement in profitability from business restructuring ・Increase in equity in earnings ー Business Overview of FY26.1Q Movement of Operating Income before Special Items FY25.1Q FY26.1Q Temporary inventory valuation gains, etc. approx.+18Earnings excluding temporary factors approx. 2 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 6) Non-recurring Items 13 () Denotes a minus FY2025 1Q FY2026 1Q Incr. (Decr.) Impairment loss (12.4) (1.4) 11.0 Loss on related business (0.9) (0.0) 0.9 Others (0.5) (0.3) 0.2 Non-recurring items total (13.8) (1.7) 12.1 Items Major items of impairment loss FY25 1Q Transfer of Equity Interest of PH business joint venture@China* (12.4) FY26 1Q ー *Full-year FY2025: The total impact was (7.9) billion yen, including a realized gain of 4.5 billion yen in 3Q FY2025 from foreign currency translation adjustment. 2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 7) Consolidated Statement of Financial Position 14 (Billions of Yen) () Denotes a minus Current assets 993.2 1,112.5 119.3 Liabilities 1,162.9 1,264.7 101.8 Cash and cash equivalents 183.1 217.8 34.7 Operating payables 133.6 176.6 43.0 Operating receivables 327.6 349.6 22.0 Interest-bearing liabilities 795.8 876.4 80.6 Inventories 414.5 467.2 52.7 Other liabilities 233.5 211.7 (21.8) Other current assets 68.0 77.9 9.9 Non-current assets 1,158.5 1,149.8 (8.7) Equity 988.8 997.6 8.8 Property, plant and equipment & right-of-use assets 720.8 712.9 (7.9) Equity attributable to owners of the parent 864.7 873.2 8.5 Goodwill and Intangible assets 98.0 97.2 (0.8) Non-controlling interests 124.1 124.4 0.3 Other non-current assets 339.7 339.7 0.0 Total 2,151.7 2,262.3 110.6 Total 2,151.7 2,262.3 110.6 Items End of Mar.2026 End of Jun.2026 Incr. (Decr.)Items End of Mar.2026 End of Jun.2026 Incr. (Decr.) Total assets were 2,262.3 billion yen, up 110.6 billion yen from the end of FY2025, mainly due to increases in operating receivables and inventories driven by higher raw material prices.2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 8) Consolidated Statement of Cash Flows 15 (Billions of Yen) () Denotes a minus FY2025 1Q FY2026 1Q Incr. (Decr.) Ⅰ．Cash flows from operating activities (a) 45.4 14.0 (31.4) ( of which working capital ) 28.2 (29.6) (57.8) Ⅱ．Cash flows from investing activities (b) (24.7) (29.2) (4.5) ( of which cash inflows from divestments, etc. ) 9.7 0.5 (9.2) Free cash flows (a)+(b) 20.7 (15.2) (35.9) Ⅲ．Cash flows from financing activities (8.8) 47.1 55.9 Ⅳ．Others ( Effect of exchange rate change on cash and cash equivalents ) (2.0) 2.8 4.8 Net incr.(decr.) in cash and cash equivalents 9.9 34.7 24.8 Items ・Cash flows from operating activities: Decreased to 14.0 billion yen, a year-on-year decline of 31.4 billion yen, mainly due to increases in working capital driven by higher raw material prices.2. Results for FY2026.1Q
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Copyright © 2026 Mitsui Chemicals, Inc. 3. Outlook for 1st Half of FY2026 (April 1, 2026 – September 30, 2026)
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Copyright © 2026 Mitsui Chemicals, Inc. 17 1-1) Highlights of Consolidated Financial Outlook 3. Outlook for FY2026.1H (Billions of Yen) () Denotes a minus 1st Half 1st Half 1st Half ％ 813.6 957.0 143.4 18% 44.5 76.0 31.5 71% (16.6) (10.0) 6.6 ー 27.9 66.0 38.1 137% (1.7) (5.0) (3.3) ー 26.2 61.0 34.8 133% 7.8 34.0 26.2 336% Exchange rate (Yen/US$) 146 160 ＋ 14 Domestic standard naphtha price (Yen/KL) 64,900 104,500 ＋ 39,600 Interim Interim Incr.(Decr.) 37.5 37.5 －Dividend (Yen/Share) Financial incomes/expenses Income before taxes Net income attributable to owners of the parent Operating income FY2025 FY2026 Outlook Incr. (Decr.) Operating income before special items Non-recurring items Sales revenue Items
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Copyright © 2026 Mitsui Chemicals, Inc. 56.8 77.8 66.0 (10.5) 15.0 44.5 76.0 -15 5 25 45 65 85FY25.1H FY26.1H Outlook (Billions of Yen) ±０ Volume Terms of trade +31.5 ・Vision care [+] ・Semiconductor applications [+] ・Mid-East conflict [-] 18 [+] denotes profit trigger [-] denotes loss trigger () Denotes a minus +31.5 Others Basic & Green Materials ・Restructuring [+] ・Equity in earnings [+] ・Capacity expansion [-] YoY Specialty chemicals domains ＋9.2 Specialty chemicals domains Specialty chemicals domains Others 1-2) Highlights of Consolidated Financial Outlook (Operating Income before Special Items) 3. Outlook for FY2026.1H Volume Terms of trade Costs, etc. Fixed costs expected to increase, such as depreciation expenses, due to capacity expansions. ・Vision care materials expected to increase, driven by growing demand for high-refractive-index lenses. ・Semiconductor applications expected to increase due to growing demand in the cutting-edge applications, driven by the expansion of generative AI. ・Expecting temporary inventory valuation gains and other factors due to higher raw material prices. ・Expecting improvement in terms of trade due to foreign exchange impact. ・Expecting improvement in profitability from business restructuring ・Expecting improvement in equity in earnings. Expecting decline in sales volume due to production cutbacks caused by the Middle East conflict. Expecting deterioration in production yields and energy efficiency due to production cutbacks caused by the Middle East conflict. Factors Comments Main factors contributing to the increase [+] Main factors contributing to the decrease [-] ・Inventory valuation [+] ・Foreign exchange impact [+] ・Mid-East conflict [-] ±０ Costs, etc. Basic & Green Materials
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Copyright © 2026 Mitsui Chemicals, Inc. (Billions of Yen) () Denotes a minus Life & Healthcare Solutions 115.3 125.0 9.7 13.0 13.0 0.0 (0.5) 0.0 0.5 Mobility Solutions 258.2 295.0 36.8 26.0 30.0 4.0 (2.5) 8.5 (2.0) ICT Solutions 137.0 160.0 23.0 17.8 23.0 5.2 4.0 2.0 (0.8) Specialty chemicals domains 510.5 580.0 69.5 56.8 66.0 9.2 1.0 10.5 (2.3) Basic & Green Materials 295.6 370.0 74.4 (10.5) 15.0 25.5 (1.0) 21.0 5.5 Others 7.5 7.0 (0.5) (1.8) (5.0) (3.2) - - (3.2) Total 813.6 957.0 143.4 44.5 76.0 31.5 0.0 31.5 0.0 Volume Sales revenue Operating income before special items Breakdown FY2025 1H Segment Terms of trade CostsFY2026 1H Outlook Incr.(Decr.) FY2025 1H FY2026 1H Outlook Incr.(Decr.)19 2) Sales Revenue and Operating Income before Special Items by Business Segment (compared with corresponding period of FY2025 results) 3. Outlook for FY2026.1H [ROS:11.1%] [11.4%]
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Copyright © 2026 Mitsui Chemicals, Inc. 13.8 11.2 15.3 13.0 15.4 18.8 18.8 21.2 29.2 30.0 34.1 34.2 13.0 2H 1H Volume (0.5) Terms of trade ±0 Costs, etc. +0.5 20 ±0 ・Vision care [+] ・Agrochemicals [-] 3-1) Life & Healthcare Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) FY22 FY23 FY26.1H OutlookFY24 FY25 ・FY25 temporary factor [+] ・Restructuring [+] ・Costs [-] () Denotes a minus 3. Outlook for FY2026.1H Trend Vision care [+] Sales volume [+] Temporary factor [-] Costs Oral care [+] Restructuring Agrochemicals [-] Sales volume Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase [＋] Main factors contributing to the decrease [-] Improvement in profitability from business restructuring ー ・Volume expected to increase, driven by growing demand for high-refractive-index lenses ・Elimination of FY2025 negative temporary factor (production suspension at Omuta Works) Higher fixed costs from planned capacity expansion initiatives, etc. Business Overview of FY26.1H (Outlook): Movement of Operating Income before Special Items ー Some overseas sales are expected to shift into the second half (Billions of Yen)
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Copyright © 2026 Mitsui Chemicals, Inc. 23.4 26.9 28.4 26.0 25.9 30.8 26.7 25.0 49.3 57.7 55.1 51.0 30.0 Volume (2.5) Terms of trade +8.5 Costs, etc. (2.0) ・Mid-East conflict [-] 21 () Denotes a minus +4.0 ・Foreign exchange impact [+] ・Inventory [+](Billions of Yen) ・Capacity expansion [-] ・Restructuring [+] 3-2) Mobility Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) 3. Outlook for FY2026.1H FY22 FY23 FY26.1H OutlookFY24 FY25 1H 2H Trend Elastomers [-] Sales volume [+] Foreign exchange impact [-] Costs Composite materials (PP compounds, Performance compounds) [+] Foreign exchange impact [+] Inventory Solutions business [-] Sales volume [+] Restructuring Business Overview of FY26.1H (Outlook): Movement of Operating Income before Special Items Improvement in profitability from business restructuring Decrease in orders received due to reduction of development spending by OEMs caused by the Middle East conflict Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase [＋] Main factors contributing to the decrease [-] Improvement in terms of trade due to foreign exchange impact ・Decline in sales volume due to production cutbacks caused by the Middle East conflict ・Higher fixed costs due to capacity expansion, such as depreciation expenses ・Improvement in terms of trade due to foreign exchange impact ・Temporary inventory valuation gains and other factors due to higher raw material prices
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Copyright © 2026 Mitsui Chemicals, Inc. 15.0 12.9 12.8 17.8 8.8 10.7 13.9 19.1 23.8 23.6 26.7 36.9 23.0 Volume ＋4.0 Terms of trade +2.0 Costs, etc. (0.8) 22 () Denotes a minus +5.2 ・Semiconductor & optical materials [+] ・ICT films & sheets [+] (Billions of Yen) 3-3) ICT Solutions: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) 3. Outlook for FY2026.1H FY22 FY23 FY26.1H OutlookFY24 FY25 Foreign exchange impact [+] 1H 2H Trend Semiconductor & optical materials [+] Sales volume [+] Foreign exchange impact [-] Costs Coating ＆ engineering materials [+] Foreign exchange impact ICT films & sheets [+] Sales volume [+] Foreign exchange impact [-] Costs Nonwovens [＋] Costs ・Demand growth, particularly in semiconductor markets ・Improvement in terms of trade due to foreign exchange impact Start-up costs for CNT pellicles for use in next-gen EUV lithography Business Overview of FY26.1H (Outlook): Movement of Operating Income before Special Items Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase [＋] Main factors contributing to the decrease[-] Improvement in terms of trade due to foreign exchange impact ー ・Demand growth, particularly in semiconductor markets ・Improvement in terms of trade due to foreign exchange impact Increase in costs associated with sales expansion Reduction in fixed costs ー
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Copyright © 2026 Mitsui Chemicals, Inc. 27.3 (8.7) (2.6) (10.5)(9.5) (2.9) (8.8) (7.9) 17.8 (11.6) (11.4) (18.4) 15.0 Middle-East Conflict approx.(3) 23 () Denotes a minus +25.5 (Billions of Yen) 3-4) Basic & Green Materials: Operating Income before Special Items and Business Overview (compared with corresponding period of FY2025 results) 3. Outlook for FY2026.1H FY22 FY23 FY26.1H Outlook FY24 FY25 Trend Petrochemicals [-] Sales volume [-] Terms of trade [+] Inventory valuation [+] Temporary factor Basic chemicals [-] Sales volume [+] Inventory valuation [+] Restructuring Polyurethanes [+] Restructuring [+] Equity in earnings [+] Temporary factor Comments [+] denotes profit trigger [-] denotes loss triggerMain factors contributing to the increase [＋] Main factors contributing to the decrease [-] ・Temporary inventory valuation gains and other factors due to higher raw material prices ・Elimination of FY2025 negative temporary factors (reinspection-related cracker suspension at Osaka Works) ・Contribution from rationalization efforts, etc. Decline in sales volume and deterioration in energy efficiency due to production cutbacks caused by the Middle East conflict. ・Temporary inventory valuation gains and other factors due to higher raw material prices ・Improvement in profitability from business restructuring and rationalization efforts, etc. Decline in sales volume due to production cutbacks caused by the Middle East conflict. ・Improvement in profitability from business restructuring ・Increase in equity in earnings ・Elimination of FY2025 negative temporary factor (production suspension at Omuta Works) ー Business Overview of FY26.1H (Outlook): Movement of Operating Income before Special Items 1H 2H Earnings excluding temporary factors approx. 1 ・Elimination of FY2025 negative temporary factors ・Business restructuring and rationalization efforts, etc. approx.+14 Temporary inventory valuation gains, etc. just over +14
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Copyright © 2026 Mitsui Chemicals, Inc. 4) Consolidated Statement of Cash Flows 3. Outlook for FY2026.1H (Billions of Yen) () Denotes a minus 1st Half 1st Half Ⅰ．Cash flows from operating activities (a) 127.2 94.0 (33.2) Ⅱ．Cash flows from investing activities (b) (57.6) (206.5) (148.9) Free cash flows (a)+(b) 69.6 (112.5) (182.1) Ⅲ．Cash flows from financing activities (72.8) 89.0 161.8 Ⅳ．Others ( Effect of exchange rate change on cash and cash equivalents ) 1.5 0.0 (1.5) Net incr.(decr.) in cash and cash equivalents (1.7) (23.5) (21.8) FY2025 FY2026 Outlook Incr.(Decr.)Items ・Cash flows from operating activities: Expected to be 94.0 billion yen, a year-on-year decline of 33.2 billion yen, mainly due to increases in working capital driven by higher raw material prices. ・Cash flows from investing activities: Expecting a US$900 million expenditure for the acquisition of Ultradent Products, Inc. in USA. 24
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Copyright © 2026 Mitsui Chemicals, Inc. 4. Appendix 1) Trends in Product Prices 2) Sales Revenue Increase/Decrease (Year on Year) by Business Segment 3) Sales Revenue and Operating Income before Special Items by Business Segment 4) Outline of Business Segments 5) Data Highlights
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Copyright © 2026 Mitsui Chemicals, Inc. (Naphtha prices are Domestic Standard Naphtha Price ) (PE, PP, PH, BPA(Japan): Change in Prices and Raw Materials Prices in Japan / TDI: Chinese Market Price) (ACP) : Asian contract price Year Month Jul.-Sep. Oct.-Dec. Jan.-Mar. Apr.-Jun. Jul.-Sep. Oct.-Dec. Jan.-Mar. Apr.-Jun. Jul.-Sep. Oct.-Dec. Jan.-Mar. Apr.-Jun. Naphtha (Yen/KL) 63,700 72,800 72,500 79,100 76,900 73,200 73,400 66,400 63,400 65,600 65,700 118,900 PE (Yen/KG) about (6) about +20 about (3) about +22 about (5) about (7) about (1) about (11) about (5) about +4 → about +120 PP (Yen/KG) about (6) about +20 about (3) about +22 about (5) about (7) about (1) about (11) about (5) about +4 → about +120 PH (Formula Price) (Yen/KG) → → → → → → → → → → → → BZ(ACP) (US$/T) 870 950 995 1,085 1,040 930 930 770 765 700 750 1,100 → → → +19 From Jun. → （14） From Oct. （10） From Jan. → （25） From Sep. +5 From Oct. +2 From Feb. +65 From Apr. negotiation based on BZ price and BPA market price TDI (US$/T) 2,060 1,950 1,920 1,950 1,880 1,750 1,780 1,560 1,690 1,680 1,980 2,380 2025 2026 BPA(Japan) (Yen/KG) 2023 202426 1) Trends in Product Prices 4. Appendix
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Copyright © 2026 Mitsui Chemicals, Inc. 27 2) Sales Revenue Increase/Decrease（Year on Year）by Business Segment 4. Appendix (Billions of Yen) () Denotes a minus Life & Healthcare Solutions 56.3 62.2 5.9 2.7 3.2 Volume）Sales of vision care were firm. [＋] Prices）Sales price revision reflecting higher raw material price. [+] Foreign exchange impact, etc. [+] Mobility Solutions 130.2 142.5 12.3 (2.0) 14.3 Volume）Middle East conflict impact. [-] Prices）Sales price revision reflecting higher raw material price. [+] Foreign exchange impact, etc. [+] ICT Solutions 69.0 77.8 8.8 1.7 7.1 Volume）Sales of Semiconductor applications were firm. [＋] Prices）Sales price revision reflecting higher raw material price. [+] Foreign exchange impact, etc. [+] Specialty chemicals domains 255.5 282.5 27.0 2.4 24.6 Basic & Green Materials 156.2 173.6 17.4 (18.8) 36.2 Volume）Middle East conflict impact. [-] Business restructuring (Plant Shutdown, etc.) [-] Prices）Sales price revision reflecting higher raw material price. [+] Others 3.7 3.9 0.2 - 0.2 Total 415.4 460.0 44.6 (16.4) 61.0 Breakdown VolumeFY2025 1Q FY2026 1Q Incr.(Decr.) Segment Comments Sales revenue Prices
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Copyright © 2026 Mitsui Chemicals, Inc. 28 * 3) Quarterly Sales Revenue and Operating Income before Special Items by Business Segment 4. Appendix (Billions of Yen) () Denotes a minus Sales revenue FY2025 FY2026 Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Sep outlook Life & Healthcare Solutions 56.3 59.0 58.8 85.0 62.2 62.8 Mobility Solutions 130.2 128.0 124.6 132.6 142.5 152.5 ICT Solutions 69.0 68.0 71.4 71.1 77.8 82.2 Specialty chemicals domains 255.5 255.0 254.8 288.7 282.5 297.5 Basic & Green Materials 156.2 139.4 146.9 157.4 173.6 196.4 Others 3.7 3.8 3.4 4.0 3.9 3.1 Total 415.4 398.2 405.1 450.1 460.0 497.0 Operating income before special items FY2025 FY2026 Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Sep outlook Life & Healthcare Solutions 6.2 6.8 4.0 17.2 6.8 6.2 Mobility Solutions 14.6 11.4 11.5 13.5 14.8 15.2 ICT Solutions 9.0 8.8 10.7 8.4 11.1 11.9 Specialty chemicals domains 29.8 27.0 26.2 39.1 32.7 33.3 Basic & Green Materials (2.9) (7.6) (2.3) (5.6) 19.8 (4.8) Others (0.3) (1.5) (0.4) (1.5) (2.4) (2.6) Total 26.6 17.9 23.5 32.0 50.1 25.9 Segment Segment
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Copyright © 2026 Mitsui Chemicals, Inc. 29 4) Outline of Business Segments 4. Appendix Segment Businesses Main Products Life & Healthcare Solutions Vision Care Materials, Personal Care Materials, Oral Care, Agrochemicals and Medical Business Development Ophthalmic lens materials (MR™, Do Green™), Medical materials (taurine), Oral care materials (restoratives, adhesives, digital equipment), Agrochemicals (dinotefuran, TENEBENAL™) Mobility Solutions Elastomers, Composite Materials and Mobility Solutions TAFMER™, Mitsui EPT™, LUCANT™, PP compounds, Performance compounds (ADMER™, MILASTOMER™, ARLEN™) ICT Solutions Semiconductor & Optical Materials, Coating & Engineering Materials, ICT films & sheets, ICT Materials and Nonwovens* Mitsui PELLICLE™ (EUV, DUV, FPD), APEL™, TPX™, Semiconductor gas, High-performance food packaging materials (sealants, adhesives, coating agents, eco-friendly packaging), ICT films & sheets (ICROS™ Tape, SP-PET™) Nonwovens (hygiene materials, industrial materials), Basic & Green Materials Phenols, Industrial Chemicals, Sustainable Feedstocks, Polyolefins, Licensing, Polyurethanes and Green Sustainable Chemicals Phenol, Bisphenol A, Acetone, EO, Hydroquinone, Ammonia, Exhaust gas reduction agent (AdBlue™*), Polyolefins, TDI, MDI *AdBlue is a trademark of the VDA (Verband der Automobilindustrie).
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Copyright © 2026 Mitsui Chemicals, Inc. 115.0 174.3 92.6 101.2 161.3 200.5 213.0 (85.2) (77.5) (205.2) (106.3) (123.9) (165.0) (134.8) 29.8 96.8 (112.6) (5.1) 37.4 35.5 78.2 (250.0) (200.0) (150.0) (100.0) (50.0) 0.0 50.0 100.0 150.0 200.0 250.0 '19 '20 '21 '22 '23 '24 '25 Operating CF Investing CF FCF 71.6 85.1 161.8 113.9 96.2 101.0 100.0 105.0 37.9 57.9 110.0 82.9 50.0 32.2 34.4 45.0 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 '19 '20 '21 '22 '23 '24 '25 '26 Operating income/Operating income before special items Profit attributable to owners of parent/ Net income attributable to owners of the parent 1,480.1 1,558.1 1,935.0 2,068.2 2,215.8 2,154.0 2,151.7 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 '19 '20 '21 '22 '23 '24 '25 1,339.0 1,211.7 1,612.7 1,879.5 1,749.7 1,809.2 1,668.8 1,900.0 0 500 1,000 1,500 2,000 2,500 '19 '20 '21 '22 '23 '24 '25 '26 Net Sales/Sales Revenue Operating income/Operating income before special items & Profit attributable to owners of parent/ Net income attributable to owners of the parent （Outlook) Total Assets Cash Flows （Outlook) () Denotes a minusFY19：J-GAAP / FY20～：IFRS （Billions of Yen） 30 （Billions of Yen） （Billions of Yen） （Billions of Yen） 5-1) Data Highlights 4. Appendix
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Copyright © 2026 Mitsui Chemicals, Inc. Depreciation & AmortizationCapital Expenditure 76.3 93.2 207.1 168.0 185.7 145.2 162.2 134.0 0.0 50.0 100.0 150.0 200.0 250.0 '19 '20 '21 '22 '23 '24 '25 26 52.1 76.6 84.2 92.1 95.2 99.8 104.7 121.0 0.0 50.0 100.0 150.0 '19 '20 '21 '22 '23 '24 '25 '26 R&D Expenses Net D/E Ratio 36.4 33.8 38.1 43.0 44.7 45.8 46.4 50.0 0.0 10.0 20.0 30.0 40.0 50.0 '19 '20 '21 '22 '23 '24 '25 '26 （Outlook) （Outlook) （Outlook) 0.76 0.60 0.75 0.77 0.69 0.73 0.70 0.40 0.90 1.40 0 500 1,000 '19 '20 '21 '22 '23 '24 '25 Net Interest-bearing Liabilities Equity / Equity attributable to owners of the parent Net D/E Ratio *1 FY19：J-GAAP / FY20～：IFRS （Billions of Yen） *2 *1. Includes increase due to recognition of regular maintenance and repair costs etc. under IFRS *2. Includes increase due to recognition of regular maintenance and repair costs etc. under IFRS 31 （Billions of Yen） （Billions of Yen） （Billions of Yen） 4. Appendix 5-2) Data Highlights
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Copyright © 2026 Mitsui Chemicals, Inc. Challenge Diversity One Team Chemistry for Sustainable World