{
  "spec_version": "5",
  "endpoint": "history",
  "stock_code": "8418",
  "company_name": "山口フィナンシャルグループ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8418/decisions/",
  "api_url": "/api/8418/history.json",
  "updated": "2026-10-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8418/decisions/",
  "source": {
    "chapters": {
      "html_url": "https://the-shashi.com/tse/8418/",
      "primary": [
        "社史",
        "有価証券報告書",
        "新聞・雑誌記事"
      ],
      "extraction": "一次資料を読み合わせて執筆"
    },
    "long_term": {
      "primary": [
        "有価証券報告書"
      ],
      "extraction": "EDINET の XBRL、旧有価証券報告書、会社年鑑・社史等からの転記",
      "row_field": "reference",
      "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること"
    }
  },
  "title": "山口フィナンシャルグループの歴史概略",
  "eras": [
    {
      "title": "第百十国立銀行の設立と普通銀行の百十銀行への改組",
      "start_year": 1878,
      "end_year": 1909,
      "phase": "founding"
    },
    {
      "title": "昭和恐慌と戦時下の百十銀行",
      "start_year": 1910,
      "end_year": 1943
    },
    {
      "title": "百十銀行など5行の合併による山口銀行の設立",
      "start_year": 1944,
      "end_year": 1979,
      "phase": "transformation"
    },
    {
      "title": "青島支店の開設ともみじHDとの資本業務提携",
      "start_year": 1980,
      "end_year": 2005,
      "phase": "growth"
    },
    {
      "title": "共同株式移転による山口FGの設立と北九州銀行の分離",
      "start_year": 2006,
      "end_year": 2026,
      "phase": "transformation"
    }
  ],
  "overview": [
    {
      "label": "決断",
      "text": "士族の救済から始め、港の商業金融へ本店ごと移って残った銀行である。1876年の国立銀行条例改正で金禄公債を紙幣発行の抵当にできるようになり、県の士族総代は毛利家と協議して銀行を興した。しかし山口だけを拠点にすれば官公金に依存する士族救済の融資に追われると経営陣はみた。そこで1879年9月に赤間関支店を開設し、1880年1月11日の株主総会で本店の赤間関への移転を決議した。1898年には営業満期に際して発券から離れ、普通銀行の百十銀行へ改組する。1901年の筑豊の炭鉱不況も毛利家の支援で乗り切り、百十銀行は1944年の5行合併で山口銀行の核となった。"
    },
    {
      "label": "現況",
      "text": "現在の姿は、山口・広島・北九州の地方銀行3行を傘下に置く持株会社である。2006年の共同株式移転で広島のもみじ銀行を傘下に入れ、2011年10月には山口銀行の九州域内の事業を会社分割で北九州銀行に承継させた。並行して、証券は東海東京証券、資産運用は大和証券グループ本社、保険は住友生命保険との合弁で補い、2024年4月にはドリームインキュベータを持分法適用関連会社とした。その結果、2026年3月期の連結経常収益は2,619億円、親会社株主に帰属する当期純利益は330億円となり、中期経営計画2022が最終年度に掲げた330億円の水準に並んだ。"
    }
  ],
  "profile": [
    {
      "key": "founding_business",
      "label": "祖業",
      "value": "山口県士族の出資による国立銀行"
    },
    {
      "key": "current_issue",
      "label": "現在の注力課題",
      "value": "ROEの引き上げと地域商社など非金融事業の拡大",
      "tags": [
        "資本効率",
        "多角化"
      ]
    }
  ],
  "lineage": {
    "path": "8418-lineage-top.v3.json"
  },
  "timelineLead": "1878年に設立された第百十国立銀行が起源。\n1944年に百十銀行など5行が合併して山口銀行が発足し、2006年にはもみじHDとの共同株式移転で県境を越えた持株会社を設けた。山口・広島・北九州を地盤とする地方銀行グループである。",
  "lineageLead": "1878年に設立した第百十国立銀行が前身である。\n1898年に百十銀行に改組し、1944年に5行の合併で山口銀行を設立した。2006年にもみじHDとの共同株式移転で持株会社を設立し、2011年に九州域内事業を北九州銀行へ承継させた。県境を越えた再編を持株会社の下で進める広域地銀グループである。",
  "foundingStory": true,
  "chapters": [
    {
      "start_year": 1878,
      "end_year": 1909,
      "main_title": "第百十国立銀行の設立と普通銀行の百十銀行への改組",
      "subsections": [
        {
          "title": "山口で興した第百十国立銀行と、赤間関へ移転した本店・20年満期で転じた百十銀行",
          "text": "第百十国立銀行は1878年11月25日に設立の免許を受け、翌1879年3月10日に山口米屋町で開業した。発足時の資本金は60万円、紙幣発行高は46万4000円で、全国の国立銀行で上位5行に入る規模。出資者は山口県の士族に限られ、初代頭取には士族就産所の頭取を務めた毛利藤内氏が就任した。1876年の国立銀行条例改正で金禄公債証書を紙幣発行の抵当にできるようになり、県の士族総代は旧藩主の毛利家と協議して銀行の設立を決めた。山口フィナンシャルグループは、1878年に創業したこの銀行をグループの源流に位置づけている。生計の道を失った士族の家産を守る策と、県内の殖産興業に資金を供給する策を、一つの銀行に兼ねさせた設計だったとみられる。\n\n第百十国立銀行は1880年、本店を山口から赤間関（現・下関市）へ移し、旧本店を山口支店とした。開業から半年後の1879年9月10日には赤間関に支店を開設しており、大蔵卿あての設置願は北国や九州の商船が集まる地であることを理由に挙げた。山口は旧藩以来の政治の中心で士族も多く住んだ一方、交通の未整備な当時の経済から見れば山間の町にとどまった。経営陣は、山口だけを拠点にすれば官公金に依存した士族救済の融資に追われ、国立銀行の趣旨に合わないと判断した。1880年1月11日の株主総会で、赤間関への本店の移転を決議。預金と為替の需要が集まる海峡の商港に本店を置き、融資の主な先を士族救済から商業金融へ移す狙いがあったと推察される。\n\n第百十国立銀行は1898年11月25日、国立銀行条例が定めた営業年限の満期を迎え、株式会社百十銀行に改組した。発券の権限は日本銀行の開業で失われており、発行済みの紙幣は日本銀行との約定にもとづいて毎年順に消却された。改組の前後の山口県では山陽鉄道の建設と日清戦争後の好況で銀行の設立が相次ぎ、1902年には県内に本店を置く普通銀行と貯蓄銀行が26行。資本金60万円で県内の他行を大きく上回った百十銀行も、1901年には筑豊の炭鉱不況の影響を受け、毛利家の支援で立て直した。百十銀行は1944年3月31日、宇部・華浦・大島・船城の4行と合併して発足した山口銀行の核となった。発券から預金と貸出に軸を移した普通銀行への転換が、昭和の銀行合同で県内の中心に立つ素地をつくったのだろう。",
          "references": [
            {
              "title": "山口銀行『目でみるやまぎん100年のあゆみ』1978年「前史・創業（第百十国立銀行の時代）」",
              "year": null,
              "month": null,
              "date": null,
              "url": null,
              "quotes": []
            },
            {
              "title": "山口銀行『山口銀行史』1968年「第百十国立銀行」店舗（赤間関支店の開設・本店の移転）",
              "year": null,
              "month": null,
              "date": null,
              "url": null,
              "quotes": []
            },
            {
              "title": "山口フィナンシャルグループ『統合報告書 2022』経営方針「YMFGのあゆみ」",
              "year": null,
              "month": null,
              "date": null,
              "url": null,
              "quotes": []
            },
            {
              "title": "証券 39(1)(454) 1987年（新規上場会社紹介）1.沿革",
              "year": null,
              "month": null,
              "date": null,
              "url": null,
              "quotes": []
            }
          ],
          "start_year": 1878,
          "opinionPos": [
            [
              315
            ],
            [
              311
            ],
            [
              338
            ]
          ]
        }
      ]
    }
  ],
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      "reference": "有価証券報告書"
    },
    {
      "year": 2011,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1641,
      "operating_profit_jp": "営業利益",
      "operating_profit": 358,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 358,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 192,
      "net_margin": 11.7,
      "employees": null,
      "reference": "有価証券報告書"
    },
    {
      "year": 2012,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1551,
      "operating_profit_jp": "営業利益",
      "operating_profit": 364,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 364,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 179,
      "net_margin": 11.54,
      "employees": 4269,
      "reference": "有価証券報告書"
    },
    {
      "year": 2013,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1580,
      "operating_profit_jp": "営業利益",
      "operating_profit": 438,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 438,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 272,
      "net_margin": 17.215,
      "employees": 4143,
      "reference": "有価証券報告書"
    },
    {
      "year": 2014,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1611,
      "operating_profit_jp": "営業利益",
      "operating_profit": 498,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 498,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 312,
      "net_margin": 19.366,
      "employees": 3921,
      "reference": "有価証券報告書"
    },
    {
      "year": 2015,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1590,
      "operating_profit_jp": "営業利益",
      "operating_profit": 473,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 473,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 305,
      "net_margin": 19.182,
      "employees": 3804,
      "reference": "有価証券報告書"
    },
    {
      "year": 2016,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1655,
      "operating_profit_jp": "営業利益",
      "operating_profit": 497,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 497,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 323,
      "net_margin": 19.516,
      "employees": 3734,
      "reference": "有価証券報告書"
    },
    {
      "year": 2017,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1636,
      "operating_profit_jp": "営業利益",
      "operating_profit": 468,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 468,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 316,
      "net_margin": 19.315,
      "employees": 4543,
      "reference": "有価証券報告書"
    },
    {
      "year": 2018,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1613,
      "operating_profit_jp": "営業利益",
      "operating_profit": 478,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 478,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 329,
      "net_margin": 20.396,
      "employees": 4484,
      "reference": "有価証券報告書"
    },
    {
      "year": 2019,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1626,
      "operating_profit_jp": "営業利益",
      "operating_profit": 334,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 334,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 231,
      "net_margin": 14.206,
      "employees": 4549,
      "reference": "有価証券報告書"
    },
    {
      "year": 2020,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1754,
      "operating_profit_jp": "営業利益",
      "operating_profit": 366,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 366,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 254,
      "net_margin": 14.481,
      "employees": 4541,
      "reference": "有価証券報告書"
    },
    {
      "year": 2021,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 1833,
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      "operating_profit": 370,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 370,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 250,
      "net_margin": 13.638,
      "employees": 4415,
      "reference": "有価証券報告書"
    },
    {
      "year": 2022,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "経常収益",
      "sales": 1470,
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      "operating_profit": -76,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": -76,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": -130,
      "net_margin": -8.844,
      "employees": 3979,
      "reference": "有価証券報告書"
    },
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      "year": 2023,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 1573,
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      "operating_profit": 257,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 257,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 179,
      "net_margin": 11.379,
      "employees": 3797,
      "reference": "有価証券報告書"
    },
    {
      "year": 2024,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 1848,
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      "operating_profit": 373,
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      "net_margin": 13.636,
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      "reference": "有価証券報告書"
    },
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      "year": 2025,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
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      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 2134,
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      "reference": "有価証券報告書"
    },
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      "year": 2026,
      "month": 3,
      "company_name": "山口フィナンシャルグループ",
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    }
  ]
}
