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  "company_name": "LIXIL",
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  "updated": "2026-09-04",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5938/",
  "source": {
    "primary": [
      "有価証券報告書"
    ],
    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
    "row_field": "source"
  },
  "timeline": [
    {
      "date": "1949/9",
      "importance": 1,
      "event": "日本建具工業を創設",
      "source": "有価証券報告書"
    },
    {
      "date": "1953/8",
      "importance": 1,
      "event": "既存工場を買収",
      "source": "有価証券報告書"
    },
    {
      "date": "1953/8",
      "importance": 1,
      "event": "葛飾工場として操業を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1967/9",
      "importance": 1,
      "event": "東洋サッシを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1967/9",
      "importance": 1,
      "event": "アルミサッシの一貫工場を新設",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/8",
      "importance": 1,
      "event": "商号をトーヨーサッシへ変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/10",
      "importance": 1,
      "event": "東洋ドアー他4社を吸収合併",
      "source": "有価証券報告書"
    },
    {
      "date": "1974/11",
      "importance": 1,
      "event": "東洋エクステリアを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/4",
      "importance": 2,
      "event": "ビバホーム（のちのトステムビバ）を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/9",
      "importance": 1,
      "event": "ビル建材事業に参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/5",
      "importance": 2,
      "event": "アイフルホーム（フランチャイズ住宅）を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/2",
      "importance": 2,
      "event": "三井軽金属加工の営業を譲り受けビル建材事業に本格参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/8",
      "importance": 1,
      "event": "東京証券取引所市場第二部に株式を上場（1987年3月に一部指定）",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/11",
      "importance": 1,
      "event": "厨房事業に参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/12",
      "importance": 1,
      "event": "超高層ビルサッシ部門に参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1990/1",
      "importance": 1,
      "event": "中低層サッシ部門を拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/7",
      "importance": 1,
      "event": "商号をトステムへ変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/6",
      "importance": 1,
      "event": "トップ商事（のちのLIXILビバ）を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/10",
      "importance": 1,
      "event": "トステムセラ・日本レポールを吸収合併",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/7",
      "importance": 1,
      "event": "日本住宅保証検査機構を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/10",
      "importance": 1,
      "event": "東洋エクステリア・アイフルホームテクノロジー・鈴木シャッター工業を子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/10",
      "importance": 3,
      "event": "INAXを子会社化",
      "source": "有価証券報告書",
      "link": "/tse/5938/decisions/tostem-inax-merger-2001/"
    },
    {
      "date": "2001/10",
      "importance": 2,
      "event": "INAXトステム・HDに商号変更し純粋持株会社へ移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/10",
      "importance": 1,
      "event": "商号を住生活グループへ変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/7",
      "importance": 1,
      "event": "中国・東南アジアの衛生陶器事業を子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/4",
      "importance": 2,
      "event": "トステムがINAX・新日軽・東洋エクステリア等を吸収合併しLIXILに商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/8",
      "importance": 3,
      "event": "藤森義明氏が代表執行役社長兼CEOに就任",
      "source": null,
      "link": "/tse/5938/decisions/fujimori-ceo-appointment-2011/"
    },
    {
      "date": "2011/12",
      "importance": 2,
      "event": "カーテンウォール大手Permasteelisa S.p.A.の株式を取得",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/7",
      "importance": 1,
      "event": "LIXILグループに商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/9",
      "importance": 3,
      "event": "グローエ・グループの買収を発表（負債込み約3,800億円）",
      "source": null,
      "link": "/tse/5938/decisions/american-standard-grohe-acquisition-2013/"
    },
    {
      "date": "2020/9",
      "importance": 2,
      "event": "Permasteelisa S.p.A.の株式を売却",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/11",
      "importance": 2,
      "event": "LIXILビバの株式を売却",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/12",
      "importance": 1,
      "event": "子会社LIXILを吸収合併しLIXILに商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/1",
      "importance": 1,
      "event": "川島織物セルコンの株式を売却",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/11",
      "importance": 1,
      "event": "本社を移転",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/4",
      "importance": 1,
      "event": "LIXILホームファイナンスを清算",
      "source": "有価証券報告書"
    }
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}