{
  "spec_version": "3",
  "endpoint": "timeline",
  "stock_code": "8359",
  "company_name": "八十二長野銀行",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8359/",
  "api_url": "/api/8359/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/8359/",
  "source": {
    "primary": [
      "有価証券報告書（沿革）"
    ],
    "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": "1877/10",
      "importance": 1,
      "event": "第十九国立銀行が設立",
      "source": null
    },
    {
      "date": "1878/10",
      "importance": 1,
      "event": "第六十三国立銀行が設立",
      "source": null
    },
    {
      "date": "1931/8",
      "importance": 3,
      "event": "第十九銀行と六十三銀行が合併し八十二銀行を設立",
      "source": null
    },
    {
      "date": "1943/3",
      "importance": 2,
      "event": "上伊那銀行・佐久銀行・信州銀行の営業を譲受",
      "source": null
    },
    {
      "date": "1943/12",
      "importance": 2,
      "event": "飯田銀行を吸収合併",
      "source": null
    },
    {
      "date": "1950/11",
      "importance": 1,
      "event": "長野県商工信用組合が設立",
      "source": null
    },
    {
      "date": "1962/1",
      "importance": 1,
      "event": "外国為替業務を開始",
      "source": null
    },
    {
      "date": "1969/9",
      "importance": 1,
      "event": "本社ビルが竣工",
      "source": null
    },
    {
      "date": "1971/4",
      "importance": 1,
      "event": "総合オンラインを開始",
      "source": null
    },
    {
      "date": "1971/10",
      "importance": 1,
      "event": "東京証券取引所市場第二部に上場",
      "source": null
    },
    {
      "date": "1972/8",
      "importance": 1,
      "event": "東京証券取引所市場第一部に指定替え",
      "source": null
    },
    {
      "date": "1983/4",
      "importance": 1,
      "event": "公共債の窓口販売を開始",
      "source": null
    },
    {
      "date": "1989/2",
      "importance": 1,
      "event": "長野相互銀行を長野銀行に商号変更",
      "source": null
    },
    {
      "date": "1989/5",
      "importance": 1,
      "event": "新総合オンライン・システムが稼働",
      "source": null
    },
    {
      "date": "1993/10",
      "importance": 1,
      "event": "信託業務を開始",
      "source": null
    },
    {
      "date": "1998/12",
      "importance": 1,
      "event": "投資信託の窓口販売を開始",
      "source": null
    },
    {
      "date": "2002/10",
      "importance": 1,
      "event": "個人年金保険の販売を開始",
      "source": null
    },
    {
      "date": "2005/5",
      "importance": 1,
      "event": "証券仲介業務を開始",
      "source": null
    },
    {
      "date": "2006/4",
      "importance": 2,
      "event": "八十二証券を完全子会社化",
      "source": null
    },
    {
      "date": "2008/6",
      "importance": 1,
      "event": "銀行本体でのクレジットカード発行を開始",
      "source": null
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "プライム市場に移行",
      "source": null
    },
    {
      "date": "2023/6",
      "importance": 3,
      "event": "長野銀行を完全子会社化",
      "source": null
    },
    {
      "date": "2025/3",
      "importance": 2,
      "event": "静岡銀行および山梨中央銀行と業務提携",
      "source": null
    },
    {
      "date": "2026/1",
      "importance": 3,
      "event": "長野銀行を吸収合併",
      "source": null
    },
    {
      "date": "2026/1",
      "importance": 2,
      "event": "八十二長野銀行に商号変更",
      "source": null
    }
  ]
}