{
  "timeline": [
    {
      "date": "2018",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "指名委員会等設置会社へ移行",
      "detail": "グループCEO体制を明文化",
      "significance": "ガバナンス改革の節目、機関設計を変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2023",
      "category": "",
      "region": "",
      "importance": 5,
      "event": "ビッグモーター不正請求問題が表面化",
      "detail": "損保ジャパンの保険金不正請求関与が社会問題化",
      "significance": "SOMPO史上最大の信頼危機、ガバナンス改革の引き金",
      "source": ""
    },
    {
      "date": "2009/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "損保ジャパンと日本興亜が共同持株会社設立に合意",
      "detail": "株式移転計画書を作成、経営統合契約を締結",
      "significance": "2008年金融危機後の損保再編第1幕、業界2位連合の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "両社臨時株主総会で持株会社設立を承認",
      "detail": "NKSJホールディングス設立を可決",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "ＮＫＳＪホールディングス設立",
      "detail": "損保ジャパンと日本興亜損保の共同株式移転で誕生",
      "significance": "業界2位の損保連合体が発足、損保業界3メガ体制が確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東証・大証市場第一部に上場",
      "detail": "共同株式移転による新規上場",
      "significance": "設立と同時に1部上場、グループ持株会社として資本市場入り",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "佐藤正敏が初代社長に就任",
      "detail": "損保ジャパン出身、2012年まで在任",
      "significance": "旧損保ジャパン主導の統合運営を象徴する人事",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/5",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 1,
      "event": "シンガポールTenet Insurance Companyを買収",
      "detail": "損保ジャパン経由で全株取得",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "損保ジャパン日本興亜アセットマネジメント発足",
      "detail": "アセマネ子会社2社の合併",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/11",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "トルコFiba Sigorta（後Sompo Sigorta）を買収",
      "detail": "発行済株式の99.07%取得",
      "significance": "新興国損保への足がかり、トルコ市場参入",
      "source": "有価証券報告書",
      "amount": "99.07%"
    },
    {
      "date": "2011/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "設立初年度に当期純損失▲129億円",
      "detail": "JGAAP連結",
      "significance": "発足直後に統合費用と東日本大震災等で赤字スタート",
      "source": "有価証券報告書",
      "amount": "純損失▲129億円"
    },
    {
      "date": "2011/6",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 1,
      "event": "マレーシアBerjaya Sompo Insuranceを連結子会社化",
      "detail": "持分法関連→子会社化",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ＮＫＳＪひまわり生命保険発足",
      "detail": "損保ジャパンひまわり生命と日本興亜生命の合併",
      "significance": "グループ生保事業の一本化",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "2期連続で当期純損失▲923億円",
      "detail": "タイ洪水・自然災害が直撃",
      "significance": "設立2年で巨額損失、統合効果発現が後ずれ",
      "source": "有価証券報告書",
      "amount": "純損失▲923億円"
    },
    {
      "date": "2012/4",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "櫻田謙悟が第2代社長に就任",
      "detail": "2022年3月まで10年在任",
      "significance": "以後10年に及ぶ櫻田体制の起点、財界活動にも注力",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/9",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "損保ジャパン日本興亜ホールディングスに商号変更",
      "detail": "NKSJ呼称を改める",
      "significance": "旧NKSJ時代を脱し、損保ジャパンブランドを前面に",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/9",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "損害保険ジャパンと日本興亜損保が合併",
      "detail": "損害保険ジャパン日本興亜株式会社が発足",
      "significance": "2010年統合から4年越しの事業会社統合、シナジー本格化",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/10",
      "category": "組織再編",
      "region": "米州",
      "importance": 1,
      "event": "ブラジルYasuda Maritima Seguros発足",
      "detail": "現地子会社2社の合併",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/12",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "ワタミの介護を取得しSOMPOケアネクストに",
      "detail": "介護事業に参入",
      "significance": "損保以外の事業の柱として介護事業を本格展開",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/3",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "株式会社メッセージを買収",
      "detail": "介護大手、後のSOMPOケアメッセージ",
      "significance": "2件目の介護M&Aで業界トップクラスの介護事業者へ",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "当社の連結子会社である株式会社全国訪問健康指導協会と、当社の子会社である損保ジャパン日本興亜リスクマネジメント株式会社および損保ジャパン日本興亜ヘルスケアサービス株式会社は合併し、商号をＳＯＭＰＯリスケアマネジメント株式会社とした。",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/10",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "ＳＯＭＰＯホールディングスに商号変更",
      "detail": "損保ジャパン日本興亜HDから現社名へ",
      "significance": "SOMPOブランドへの統一、グローバル金融サービス企業を志向",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "SOMPOケアメッセージを完全子会社化",
      "detail": "東証JASDAQ上場廃止",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/3",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "Endurance Specialty Holdings（バミューダ）を買収",
      "detail": "Sompo International Holdingsを設立し買収、後にEnduranceは清算",
      "significance": "海外保険事業の中核となる大型買収、SIブランドの起点",
      "source": "有価証券報告書",
      "amount": "買収総額約63億ドル"
    },
    {
      "date": "2018/1",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "SI Insurance (Europe), SAを設立",
      "detail": "欧州事業の現地法人",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "SOMPOケア株式会社に統合",
      "detail": "介護4社（ケア・ケアネクスト・ジャパンケア・プランニングケア）合併",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/1",
      "category": "組織再編",
      "region": "欧州",
      "importance": 1,
      "event": "欧州損保子会社を統合",
      "detail": "SI Insurance (Europe)に集約",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "セゾン自動車火災・そんぽ24を合併",
      "detail": "ダイレクト損保事業の集約、後にSOMPOダイレクト損害保険に",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/4",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "SOMPOワランティを連結子会社化",
      "detail": "延長保証事業",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ＳＯＭＰＯ Light Vortexを設立",
      "detail": "エネルギー・脱炭素事業",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "社長交代",
      "region": "",
      "importance": 3,
      "event": "奥村幹夫が第3代社長に就任",
      "detail": "櫻田は会長兼グループCEOに残留、2023年に退任",
      "significance": "櫻田体制10年からの世代交代、現場・データ重視への転換",
      "source": ""
    },
    {
      "date": "2022/4",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "東証プライム市場へ移行",
      "detail": "市場区分再編",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/2",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "エヌ・デーソフトウェアを買収",
      "detail": "介護向けソフトウェア大手",
      "significance": "介護事業のDX強化、6,000億円成長投資枠の主要案件",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "当期純利益が264億円に急減",
      "detail": "ハリケーン・イアン等で前年▲1,984億円",
      "significance": "海外自然災害でグループ利益が一時的に大幅減",
      "source": "有価証券報告書",
      "amount": "純利益264億円（前年比▲88%）"
    },
    {
      "date": "2023/12",
      "category": "",
      "region": "",
      "importance": 4,
      "event": "金融庁から業務改善命令",
      "detail": "ビッグモーター問題と政策株式保有慣行を指摘",
      "significance": "業務改善命令を機に政策株式削減ペース加速とガバナンス再構築へ",
      "source": "IR"
    },
    {
      "date": "2024/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "当期純利益4,160億円で過去最高",
      "detail": "海外保険事業の運用利益拡大が牽引",
      "significance": "危機の一方で最高益、SI買収効果が結実",
      "source": "有価証券報告書",
      "amount": "純利益4,160億円"
    },
    {
      "date": "2024/4",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "株式1→3分割を実施",
      "detail": "株価8,000円超と東証ガイドラインを踏まえた個人投資家層拡大",
      "significance": "個人株主基盤拡大とバリュエーション向上の狙い",
      "source": "IR",
      "amount": "1→3"
    },
    {
      "date": "2024/10",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "社外取締役登壇の株主対話を開催",
      "detail": "内部監査部長を取締役会に参加させる体制を導入",
      "significance": "ビッグモーター問題を受けた3線管理改革とガバナンス再構築の象徴",
      "source": "IR"
    },
    {
      "date": "2025/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "IFRS移行後の保険収益5兆655億円",
      "detail": "会計基準をJGAAPからIFRSへ",
      "significance": "IFRS移行で国際比較可能性を確保",
      "source": "有価証券報告書",
      "amount": "保険収益5兆655億円"
    }
  ]
}