{
  "timeline": [
    {
      "date": "1878/11",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "千葉第九十八国立銀行設立",
      "detail": "千葉銀行の源流",
      "significance": "",
      "source": ""
    },
    {
      "date": "1901/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "千葉県内の銀行数が74行のピークに到達",
      "detail": "その多くが千葉銀行の前身銀行",
      "significance": "",
      "source": "",
      "amount": "74行"
    },
    {
      "date": "1931/1",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "県内6行体制に整理統合",
      "detail": "金融恐慌・小銀行抑制策の結果",
      "significance": "戦前千葉県銀行再編の到達点",
      "source": "",
      "amount": "6行"
    },
    {
      "date": "1943/3",
      "category": "会社設立",
      "region": "",
      "importance": 4,
      "event": "千葉合同銀行・第九十八銀行・小見川農商銀行の3行合併で千葉銀行設立",
      "detail": "一県一行主義の国策に従う。本店千葉市、70店舗",
      "significance": "戦時統制下の県内銀行統合完成",
      "source": "有価証券報告書",
      "amount": "資本金1000万円、70店舗"
    },
    {
      "date": "1944/3",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "千葉貯蓄銀行を合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1944/6",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "野田商誘銀行の営業を継承",
      "detail": "これにより県内唯一の本店銀行に",
      "significance": "県内唯一の本店銀行としての地位確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1948/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "金融機関再建整備法による最終処理で90%減資",
      "detail": "資本金138万円に",
      "significance": "戦後復興期の財務再建",
      "source": "",
      "amount": "資本金138万円"
    },
    {
      "date": "1948/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "資本金1億4000万円に増資",
      "detail": "",
      "significance": "",
      "source": "",
      "amount": "資本金1億4000万円"
    },
    {
      "date": "1956/1",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "融資問題で信用低下・業績悪化",
      "detail": "",
      "significance": "経営の転機",
      "source": ""
    },
    {
      "date": "1958/1",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "不正融資事件発生",
      "detail": "",
      "significance": "経営に大きな傷痕を残す",
      "source": ""
    },
    {
      "date": "1960/1",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "銀行史上稀にみる労働争議",
      "detail": "",
      "significance": "経営のもう1つの試練",
      "source": ""
    },
    {
      "date": "1959/9",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社総武設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1963/4",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "外国為替業務取扱開始",
      "detail": "",
      "significance": "国際業務への参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/1",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "「ひまわり」をバンクフラワーに制定",
      "detail": "",
      "significance": "企業イメージ刷新",
      "source": ""
    },
    {
      "date": "1970/10",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東京証券取引所市場第二部に上場（1971年8月第一部指定）",
      "detail": "",
      "significance": "株式市場経由の資本調達基盤",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "第一次オンラインシステム稼働開始",
      "detail": "",
      "significance": "事務処理の機械化",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/3",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "本店を千葉市中央から千葉港に新築移転",
      "detail": "",
      "significance": "経営基盤の象徴",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "創立30周年で全国地方銀行の上位にランクイン",
      "detail": "",
      "significance": "地銀上位への到達",
      "source": ""
    },
    {
      "date": "1976/5",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "第二次オンラインシステム稼働開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1978/5",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "ちばぎん保証株式会社設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/12",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "ちばぎんファイナンス（現ちばぎんリース）設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1987/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ニューヨーク支店開設",
      "detail": "",
      "significance": "国際業務の本格化",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/4",
      "category": "組織再編",
      "region": "中国",
      "importance": 2,
      "event": "香港支店開設",
      "detail": "",
      "significance": "アジア拠点の設置",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/2",
      "category": "組織再編",
      "region": "欧州",
      "importance": 2,
      "event": "ロンドン支店開設",
      "detail": "",
      "significance": "欧州拠点の設置",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "第三次オンラインシステム稼働開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/3",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "創立50周年",
      "detail": "記念事業として千葉大学寄付講座・環境文化賞・ひまわり基金等",
      "significance": "",
      "source": ""
    },
    {
      "date": "1998/3",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "中央証券（現ちばぎん証券）株式取得で子会社化",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/12",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "証券投資信託窓口販売業務取扱開始",
      "detail": "",
      "significance": "銀行窓販解禁への対応",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "損害保険商品窓口販売業務取扱開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/10",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "ちば債権回収設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/10",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "生命保険商品窓口販売業務取扱開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/2",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "証券仲介業務取扱開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/6",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "信託業務取扱開始",
      "detail": "",
      "significance": "フルラインサービス化",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "竹山正から佐久間英利へ頭取交代",
      "detail": "",
      "significance": "12年の長期体制の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "FY08経常利益93億円（リーマンショック影響）",
      "detail": "",
      "significance": "世界金融危機の直撃",
      "source": "有価証券報告書",
      "amount": "経常利益93億円、純利益123億円"
    },
    {
      "date": "2011/10",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "ちばぎん証券を株式交換で完全子会社化",
      "detail": "",
      "significance": "証券業務の完全内製化",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/6",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "佐久間英利から米本努へ頭取交代",
      "detail": "12年ぶりの頭取交代、DX成長戦略を掲げる",
      "significance": "DX時代の新体制",
      "source": ""
    },
    {
      "date": "2023/1",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "業務改善命令を受ける",
      "detail": "仕組債販売等に関する",
      "significance": "新体制下での信頼回復局面",
      "source": ""
    },
    {
      "date": "2024/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ちばぎんカードがちばぎんジェーシービーカードを吸収合併",
      "detail": "",
      "significance": "カード事業の集約",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/10",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "エッジテクノロジー社を株式取得（TOB）でグループ会社化",
      "detail": "AI人材獲得と法人・自治体向けAIソリューション展開",
      "significance": "地銀AI戦略の象徴",
      "source": "IR"
    },
    {
      "date": "2024/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "FY23経常利益902億円・純利益624億円",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書",
      "amount": "経常利益902億円、純利益624億円"
    },
    {
      "date": "2025/1",
      "category": "組織再編",
      "region": "東南アジア",
      "importance": 2,
      "event": "シンガポール支店開設",
      "detail": "",
      "significance": "アジア拠点の支店格上げ",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "FY24経常利益1075億円、純利益742億円",
      "detail": "金利上昇と貸出金増加の寄与",
      "significance": "マイナス金利解除後の収益拡大",
      "source": "有価証券報告書",
      "amount": "経常利益1075億円、純利益742億円"
    }
  ]
}