4212 Q3 2026 Earnings Presentation

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0 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Presentation of Financial Results for 3Q of FYE March 2026 January 2026 Sekisui Jushi Corporation TSE Prime Section Securities Code: 4212 Note: This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the Japanese original shall prevail.

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2 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Highlights Summary of 3Q cumulative results (sales and profits increased) Full-Year earnings outlook (unchanged) Repurchase of treasury stock  The acquisition of 1,000,000 shares was completed on January 9, 2026.  Net sales increased due to the steady performance of existing businesses, as well as the consolidation of RIKEN KOGYO Inc., which is engaged in the research, development, manufacturing, and sales of snow and wind protection products, into the Group.  On the profit side, despite the impact of continued investment in human capital and growth toward achieving the long-term vision, as well as amortization of goodwill associated with M&A activities, operating profit increased by 19.7% year on year. This was driven by sales expansion and the impact of the finalization of provisional accounting procedures related to the FYE March 2025.  The full-year forecast remains unchanged from the initial outlook announced on May 13, 2025.  In 4Q, the business environment is expected to remain highly uncertain due to persistently high prices of resources and raw materials, as well as rising costs such as logistics and labor. On the other hand, steady accumulation of sales in existing businesses, the continued penetration of price revisions, and expected contributions from certain businesses supported by seasonal demand are anticipated. As a result, the full-year earnings forecast has been maintained.

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4 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. (Unit: millions of yen) 3Q cumulative period of FYE March 2025 3Q cumulative period of FYE March 2026 Actual (Composition) Actual (Composition) YoY Amount of change Growth rate Net sales 51,712 54,582 +2,870 +5.5% (100.0%) (100.0%) Operating profit 2,715 3,250 +535 +19.7% (5.3%) (6.0%) Ordinary profit 3,080 3,700 +619 +20.1% (6.0%) (6.8%) Net income attributable to owners of parent 1,606 2,393 +787 +49.0% (3.1%) (4.4%) EBITDA (Operating profit + Depreciation + Goodwill amortization) 5,319 6,210 +890 +16.7% (10.3%) (11.4%) Summary of Results Consolidated results (overview) <April 1, 2025 to December 31, 2025> Note: Amounts are rounded down to the nearest unit Net sales increased due to the steady performance of existing businesses and the consolidation of RIKEN KOGYO as a Group company. Operating profit increased thanks to sales expansion, despite continued investment in human capital and growth

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5Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. 積水樹脂株式会社Analysis of Change in Profit (YoY Change) Analysis of change in operating profit +600 +100 -350 -150 +122 -100 +313 2,715 3,250 Cumulative 3Q of FYE March 2025 Sales expansion • Price revisions • Cost reduction initiatives • Raw material, etc. Investment in human capital Capital investment, etc. Other 3 newly consolidated companies PPA impact Cumulative 3Q of FYE March 2026 Existing businesses Change in operating profit WEMAS Group EXTILE RIKEN KOGYO 3 newly consolidated companies (operating profit) Previous 3Q cumulative total Goodwill amortization Goodwill amortization, etc. * Before new consolidations in previous period Newly consolidated companies Current 3Q cumulative total Previous 3Q cumulative total Current 3Q cumulative total Previous 3Q cumulative total Current 3Q cumulative total Goodwill amortization, etc. [Existing Businesses] Despite continued investment in human capital and growth, operating profit increased due to sales expansion, cost reduction initiatives, and other factors. [Three M&A Companies] • The WEMAS Group maintained steady performance, securing operating profit exceeding the amount of goodwill amortization. • EXTILE posted a decline in operating profit due to intensified market competition. • RIKEN KOGYO (with a Dec. FYE), reflecting its business structure with earnings concentrated in the second half, returned to profitability in 3Q (July–September), with the deficit narrowing. Unit: millions of yen; Amounts are rounded down to the nearest unit Cumulative 3Q of FYE March 2025 Sales expansion ● Price revisions ● Cost reduction initiatives ● Raw material, etc. Investment in human capital Capital investment, etc. 3 newly consolidated companies PPA impact Cumulative 3Q of FYE March 2026 Other

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6 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Results by Segment (Public Sector) Net sales and segment profit Cumulative 3Q of FYE March 2025 Cumulative 3Q of FYE March 2026 (Unit: millions of yen, %) YoY Actual (Composition) Actual (Composition) Amount of change Growth rate Net sales 26,103 28,154 +2,051 +7.9% (100.0%) (100.0%) Segment profit 743 1,248 +505 +67.9% (2.8%) (4.4%) Amount of change o/w Existing businesses WEMAS Group RIKEN KOGYO +2,051 +1,255 +251 +544 +505 +192 +425 −112  Sales in existing businesses remained steady. Growth was driven particularly by the Urban Environment and Sports Facility Products Businesses. Although investments in human capital and growth had some impact on profit, cost reduction initiatives and other factors contributed to higher earnings.  The WEMAS Group delivered a solid performance, contributing to consolidated results even after accounting for goodwill amortization.  The results of RIKEN KOGYO, newly consolidated into the Group, were included. ■ Breakdown of change Note: Amounts are rounded down to the nearest unit

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7 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Results by Segment (Private Sector) Net sales and segment profit Cumulative 3Q of FYE March 2025 Cumulative 3Q of FYE March 2026 (Unit: millions of yen, %) YoY Actual (Composition) Actual (Composition) Amount of change Growth rate Net sales 25,608 26,427 +818 +3.2% (100.0%) (100.0%) Segment profit 2,675 2,652 −23 −0.9% (10.4%) (10.0%) Note: Amounts are rounded down to the nearest unit ■ Breakdown of change  In the Exterior Products Business, sales were in line with the previous year, but profit performance remained weak due to growth investments and other factors.  In the Material Handling Systems & Supplies and Agribusiness, sales of strong-performing product groups continued, but profit remained at the same level as the previous year due in part to increased depreciation expenses from operating production facilities.  Sekisui Jushi Plametal achieved significant growth by successfully expanding its customer base for its mainstay general-purpose product, the Art Panel  EXTILE strengthened its sales activities, but this was not sufficient to offset the impact of intensifying competition, resulting in continued weak performance. Amount of change o/w Existing businesses EXTILE +818 +864 −45 −23 +70 −93

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8 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Balance Sheet Consolidated balance sheet (overview) Note: Amounts are rounded down to the nearest unit (Unit: millions of yen) End of FYE March 2025 End of 3Q FYE March 2026 Amount of change Current assets 54,941 53,881 −1,060 Non-current assets 84,642 87,196 +2,553 Total assets 139,583 141,077 +1,493 Current liabilities 34,035 28,818 −5,216 Non-current liabilities 8,106 14,863 +6,756 Total liabilities 42,141 43,682 +1,540 Total net assets 97,441 97,395 −46 Total liabilities and net assets 139,583 141,077 +1,493 Equity ratio 68.5% 67.8% −0.8 pt * Equity capital: End of FYE March 2025: 95,670 million yen End of 3Q FYE March 2026: 95,616 million yen  Increase in non-current assets: Increased due to the expansion of production facilities and enhancement of R&D facilities  Increase in non-current liabilities: Increased due to the issuance of corporate bonds, among other factors  Decrease in net assets: Decreased due to repurchase of treasury stock, among other factors

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9 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. (Unit: millions of yen) Cumulative 3Q of FYE March 2025 Cumulative 3Q of FYE March 2026 Amount of change Cash flows from operating activities 3,303 5,380 +2,076 Cash flows from investing activities −3,117 −3,793 −676 Cash flows from financing activities −3,594 −2,240 +1,353 Effect of exchange rate change on cash and cash equivalents −41 82 +123 Net increase/decrease in cash and cash equivalents −3,450 −571 +2,878 Cash and cash equivalents at beginning of period 15,167 15,842 +675 Cash and cash equivalents at end of period 11,716 15,270 +3,553 Cash Flows Consolidated cash flow statement (overview) Note: Amounts are rounded down to the nearest unit  Cash flows from operating activities: Generated through steady business performance  Cash flows from investing activities: Continued investment for growth

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11Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. 積水樹脂株式会社Forecast of the Full-year Results for FYE March 2026 Full-year forecast: unchanged (Unit: millions of yen) FYE March 2025 FYE March 2026 Actual (Composition) Forecast (Composition) YoY Amount of change Growth rate Net sales 74,231 79,000 +4,768 +6.4% (100.0%) (100.0%) Operating profit 5,011 6,400 +1,388 +27.7% (6.8%) (8.1%) Ordinary profit 5,447 6,700 +1,252 +23.0% (7.3%) (8.5%) Profit attributable to owners of parent 3,544 4,300 +755 +21.3% (4.8%) (5.4%) Return on equity (ROE) 3.7% 4.5%  The full-year forecast remains unchanged from the initial outlook announced on May 13, 2025.  In 4Q, the business environment is expected to remain highly uncertain due to persistently high prices of resources and raw materials, as well as rising costs such as logistics and labor. On the other hand, steady accumulation of sales in existing businesses, the continued penetration of price revisions, and expected contributions from certain businesses supported by seasonal demand are anticipated. As a result, the full-year earnings forecast has been maintained.

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12 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. Efforts toward Management Conscious of the Cost of Capital and Share Price Repurchase of treasury stock Number of repurchased stock: 1,000,000 shares (all shares based on the above resolution) Repurchase amount: ¥2,090,784,100 Repurchase period: May 15, 2025 to January 9, 2026 Dividend forecast Year-end dividend is expected to increase by ¥1 to ¥36 compared to the previous fiscal year. Combined with the interim dividend (¥36), the annual dividend is expected to increase by ¥2 to ¥72 (increased for the 17th consecutive fiscal year). Repurchase in accordance with the Board of Directors’ resolution dated May 13, 2025 The acquisition of 1,000,000 shares was completed on January 9, 2026. (Reference) Target for shareholder returns Total return ratio policy: Through FYE March 2027, we aim to maintain a total return ratio—the sum of dividend of surplus and repurchased treasury stock—of at least 100%. During the period of SJC Group Vision 2030 (through FYE March 2030), we will provide progressive dividends as a basic policy and maintain a consolidated dividend payout ratio of at least 40%. Dividend policy :

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13 積水樹脂株式会社 Copyright ©2026 , SEKISUI JUSHI Corporation All Right Reserved. All forward-looking statements in this document are based on information available at the time of their preparation and are subject to change due to future changes in the business environment. Actual results may differ. ■ For inquiries about the contents, please contact ■ Please also visit our website. URL: Legal & Public Relations Department, Corporate Headquarters – Management Strategy & Planning 06-6365-3288 https://www.sekisuijushi.co.jp/en/

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