{
  "spec_version": "3",
  "endpoint": "timeline",
  "stock_code": "8341",
  "company_name": "七十七銀行",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8341/",
  "api_url": "/api/8341/timeline.json",
  "updated": "2026-09-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8341/",
  "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": "1878/12",
      "importance": 2,
      "event": "第七十七国立銀行を設立",
      "source": null
    },
    {
      "date": "1898",
      "importance": 3,
      "event": "営業満期により株式会社七十七銀行に改組",
      "source": null
    },
    {
      "date": "1932/1",
      "importance": 3,
      "event": "東北実業銀行・五城銀行と合併し七十七銀行を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1932/12",
      "importance": 1,
      "event": "原町銀行を買収",
      "source": "有価証券報告書"
    },
    {
      "date": "1941/9",
      "importance": 2,
      "event": "宮城銀行を合併",
      "source": "有価証券報告書"
    },
    {
      "date": "1942/2",
      "importance": 1,
      "event": "仙南銀行の営業譲受",
      "source": "有価証券報告書"
    },
    {
      "date": "1945/5",
      "importance": 2,
      "event": "東北貯蓄銀行の営業譲受",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/12",
      "importance": 1,
      "event": "外国為替業務を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/10",
      "importance": 1,
      "event": "東京証券取引所市場第二部・札幌証券取引所に上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/8",
      "importance": 1,
      "event": "東京証券取引所市場第一部に指定替え",
      "source": "有価証券報告書"
    },
    {
      "date": "1974/11",
      "importance": 1,
      "event": "七十七リースを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/9",
      "importance": 1,
      "event": "本社を移転",
      "source": "有価証券報告書"
    },
    {
      "date": "1978/10",
      "importance": 2,
      "event": "総合オンラインシステムの稼働を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/2",
      "importance": 1,
      "event": "七十七カードを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/4",
      "importance": 1,
      "event": "信託代理店業務を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/12",
      "importance": 2,
      "event": "証券投資信託の窓口販売を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/3",
      "importance": 2,
      "event": "ニューヨーク支店とロンドン駐在員事務所を廃止",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/4",
      "importance": 1,
      "event": "損害保険代理店業務を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/10",
      "importance": 1,
      "event": "生命保険代理店業務を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/4",
      "importance": 1,
      "event": "証券仲介業務を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/3",
      "importance": 3,
      "event": "東日本大震災で沿岸部の店舗が被災",
      "source": null
    },
    {
      "date": "2016/1",
      "importance": 2,
      "event": "共同利用システム「MEJAR」の利用を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/11",
      "importance": 2,
      "event": "七十七リースなど4社を完全子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/1",
      "importance": 2,
      "event": "七十七証券設立準備を七十七証券に商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "プライム市場に移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/4",
      "importance": 2,
      "event": "信託業務を開始",
      "source": "有価証券報告書"
    }
  ]
}