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  "updated": "2026-09-06",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4208/",
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    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
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      "date": "1897/6",
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      "event": "沖ノ山炭鉱を匿名組合として設立",
      "source": "有価証券報告書"
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      "event": "宇部新川鉄工所を設立",
      "source": "有価証券報告書"
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    {
      "date": "1923/9",
      "importance": 2,
      "event": "宇部セメント製造を設立",
      "source": "有価証券報告書"
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      "date": "1933/4",
      "importance": 2,
      "event": "宇部窒素工業を設立",
      "source": "有価証券報告書"
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    {
      "date": "1942/3",
      "importance": 2,
      "event": "4社合併で宇部興産を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/5",
      "importance": 1,
      "event": "東京証券取引所に上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1951/1",
      "importance": 1,
      "event": "中央研究所を新設",
      "source": "有価証券報告書"
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      "date": "1955/12",
      "importance": 2,
      "event": "宇部カプロラクタム工場を新設",
      "source": "有価証券報告書"
    },
    {
      "date": "1957",
      "importance": 3,
      "event": "石炭事業から撤退",
      "source": null,
      "link": "/tse/4208/decisions/ube-coal-withdrawal-1957/"
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    {
      "date": "1957",
      "importance": 2,
      "event": "7,000名の配置転換を断行",
      "source": null
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      "date": "1964/6",
      "importance": 1,
      "event": "NY・デュッセルドルフ駐在員事務所を開設",
      "source": "有価証券報告書"
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      "date": "1964/10",
      "importance": 1,
      "event": "千葉石油化学工場を新設",
      "source": "有価証券報告書"
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      "event": "堺工場を新設",
      "source": "有価証券報告書"
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      "date": "1968/9",
      "importance": 1,
      "event": "高分子研究所を新設",
      "source": "有価証券報告書"
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      "date": "1969/6",
      "importance": 1,
      "event": "宇部アンモニア工業を設立",
      "source": "有価証券報告書"
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      "date": "1982/10",
      "importance": 1,
      "event": "145千KW石炭専焼自家発電所が完成",
      "source": "有価証券報告書"
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    {
      "date": "1994/9",
      "importance": 1,
      "event": "Productos Quimicos del Mediterraneo S.A.の経営権を獲得",
      "source": "有価証券報告書"
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      "date": "1997/5",
      "importance": 3,
      "event": "カプロラクタム・ナイロン工場の操業を開始",
      "source": "有価証券報告書",
      "link": "/tse/4208/decisions/caprolactam-global-expansion-1955-2005/"
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      "date": "1997/6",
      "importance": 1,
      "event": "創業100周年",
      "source": "有価証券報告書"
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      "date": "1998/7",
      "importance": 2,
      "event": "宇部三菱セメントを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/10",
      "importance": 1,
      "event": "宇部興産機械を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/10",
      "importance": 1,
      "event": "宇部日東化成を株式交換で完全子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/10",
      "importance": 1,
      "event": "宇部丸善ポリエチレンを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/6",
      "importance": 1,
      "event": "田村浩章が代表取締役社長に就任（FY08）",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/2",
      "importance": 1,
      "event": "タイ拠点2社を合併しUBE Chemicals （Asia）を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/6",
      "importance": 1,
      "event": "竹下道夫が代表取締役社長に就任（FY10）",
      "source": "有価証券報告書"
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      "date": "2014/6",
      "importance": 1,
      "event": "山本謙が代表取締役社長に就任（FY14）",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/3",
      "importance": 1,
      "event": "子会社2社を合併しUBE CORPORATION EUROPE体制に集約",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/4",
      "importance": 1,
      "event": "泉原雅人が代表取締役社長に就任（FY18）",
      "source": "有価証券報告書"
    },
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      "date": "2022/4",
      "importance": 1,
      "event": "商号をUBEに変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 3,
      "event": "セメント関連事業をUBE三菱セメントに承継",
      "source": "有価証券報告書",
      "link": "/tse/4208/decisions/cement-succession-ube-rename-2022/"
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      "date": "2023/3",
      "importance": 2,
      "event": "FY22で純損失を計上",
      "source": "有価証券報告書"
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    {
      "date": "2025/2",
      "importance": 1,
      "event": "西田祐樹への社長交代を発表",
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}