# 【表紙】

【提出書類】 | 有価証券報告書
【根拠条文】 | 金融商品取引法第24条第１項
【提出先】 | 関東財務局長
【提出日】 | 2026年６月23日
【事業年度】 | 第82期（自　2025年４月１日　至　2026年３月31日）
【会社名】 | 積水化成品工業株式会社
【英訳名】 | Sekisui Kasei Co., Ltd.
【代表者の役職氏名】 | 代表取締役社長　　古林　育将
【本店の所在の場所】 | 大阪市北区西天満２丁目４番４号
【電話番号】 | 大阪０６（６３６５）３０１４番
【事務連絡者氏名】 | 執行役員コーポレート戦略本部財務経理部長　　大浦　公一
【最寄りの連絡場所】 | 東京都新宿区西新宿２丁目７番１号
【電話番号】 | 東京０３（３３４７）９６２３番
【事務連絡者氏名】 | 執行役員コーポレート戦略本部経営企画部長　　舟橋　勝博
【縦覧に供する場所】 | 積水化成品工業株式会社東京本部※ （東京都新宿区西新宿２丁目７番１号） 株式会社東京証券取引所 （東京都中央区日本橋兜町２番１号）

（注）※は金融商品取引法の規定による縦覧に供すべき場所ではありませんが、株主等の縦覧の便宜のために備えるものであります。

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