{
  "spec_version": "3",
  "endpoint": "timeline",
  "stock_code": "9708",
  "company_name": "帝国ホテル",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/9708/",
  "api_url": "/api/9708/timeline.json",
  "updated": "2026-08-23",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/9708/",
  "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": "1887/12",
      "importance": 2,
      "event": "渋沢栄一・大倉喜八郎らの発起により資本金26万円の有限責任帝国ホテル会社を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1890/11",
      "importance": 2,
      "event": "東京・内山下町に帝国ホテルが落成し開業",
      "source": "有価証券報告書"
    },
    {
      "date": "1893/7",
      "importance": 1,
      "event": "株式会社に組織変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1907/1",
      "importance": 2,
      "event": "メトロポールホテルを合併し帝国ホテルに商号変更、資本金120万円",
      "source": "有価証券報告書"
    },
    {
      "date": "1933/5",
      "importance": 1,
      "event": "上高地帝国ホテルを起工、スイス式山小屋風の木造4階建として10月に完成",
      "source": "有価証券報告書"
    },
    {
      "date": "1945/9",
      "importance": 2,
      "event": "連合軍総司令部直属の将官宿舎として接収",
      "source": "有価証券報告書"
    },
    {
      "date": "1952/3",
      "importance": 2,
      "event": "接収を解除",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/10",
      "importance": 1,
      "event": "東京証券取引所市場第二部に上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1970/1",
      "importance": 1,
      "event": "帝国商事（現・帝国ホテルサービス）に営業の一部を譲渡",
      "source": "有価証券報告書"
    },
    {
      "date": "1970/3",
      "importance": 3,
      "event": "ライト設計の旧本館に代わる新本館が落成",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/2",
      "importance": 1,
      "event": "帝国ホテルハイヤーを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/8",
      "importance": 1,
      "event": "上高地帝国ホテルの改築が落成し9月に営業再開",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/3",
      "importance": 3,
      "event": "客室と賃貸オフィスを併設するインペリアルタワーが落成",
      "source": "有価証券報告書"
    },
    {
      "date": "1990/3",
      "importance": 1,
      "event": "アイ・エイチ・エス（現・帝国ホテルエンタープライズ）を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1990/11",
      "importance": 1,
      "event": "開業100周年",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/3",
      "importance": 3,
      "event": "東京以外の初の直営拠点として帝国ホテル大阪を開業",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/1",
      "importance": 1,
      "event": "東京国際フォーラムのケータリングサービス事業を運営受託",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/11",
      "importance": 1,
      "event": "ザ・クレストホテル柏を開業し運営を帝国ホテルエンタープライズに委託",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "東京証券取引所の市場区分見直しによりスタンダード市場に移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 2,
      "event": "帝国ホテル京都を起工",
      "source": "有価証券報告書"
    }
  ]
}