{
  "timeline": [
    {
      "date": "1888/5",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "日本石油株式会社の前身を創立",
      "detail": "内藤久寛、山口権三郎等が有限責任日本石油会社を設立（1894年日本石油株式会社に商号変更）",
      "significance": "日本の民族系石油産業の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1893/5",
      "category": "海外進出",
      "region": "",
      "importance": 1,
      "event": "米ソコニー・ヴァキュームが日本支店開設",
      "detail": "後の東燃ゼネラルの源流",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1905/12",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "久原房之助が赤沢銅山を買収、操業開始",
      "detail": "後の日立鉱山。日鉱グループの源流",
      "significance": "日鉱グループの起点となった鉱山開発",
      "source": "有価証券報告書"
    },
    {
      "date": "1912/9",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "久原鉱業株式会社設立",
      "detail": "1928年12月に日本産業株式会社に商号変更",
      "significance": "日産コンツェルン・日鉱グループの法人基盤",
      "source": "有価証券報告書"
    },
    {
      "date": "1921/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日本石油が宝田石油を合併",
      "detail": "",
      "significance": "戦前期石油資本の集約",
      "source": "有価証券報告書"
    },
    {
      "date": "1929/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日本鉱業株式会社設立",
      "detail": "日本産業の鉱山・製錬部門を分離独立",
      "significance": "日鉱グループ非鉄事業の法人化",
      "source": "有価証券報告書"
    },
    {
      "date": "1931/2",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "三菱石油株式会社設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1932/8",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ソコニーとヴァキューム・オイルが合併、ソコニー・ヴァキューム日本支店となる",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1933/6",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "興亜石油株式会社設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1934/2",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "スタンヴァック日本支社となる",
      "detail": "スタンダード・ヴァキューム・オイル・カンパニー設立に伴う",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1939/7",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "東亜燃料工業株式会社設立",
      "detail": "1989年7月に東燃株式会社に商号変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1941/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本石油が小倉石油を合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1947/7",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "ゼネラル物産株式会社設立",
      "detail": "1967年1月にゼネラル石油株式会社に商号変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1951/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本石油精製株式会社設立",
      "detail": "1999年7月に日石三菱精製株式会社に商号変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/12",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "エッソ・スタンダード石油およびモービル石油を設立",
      "detail": "スタンヴァック再編成による。1982年にエッソ石油へ商号変更",
      "significance": "戦後外資系元売の日本法人化",
      "source": "有価証券報告書"
    },
    {
      "date": "1965/8",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "共同石油株式会社設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日石アジア石油開発株式会社設立",
      "detail": "後の新日本石油開発",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/5",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日鉱金属株式会社設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/11",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本鉱業が金属事業を日鉱金属へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/12",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日本鉱業が共同石油を合併、株式会社日鉱共石に商号変更",
      "detail": "",
      "significance": "日鉱グループにおける石油・金属の統合",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社日鉱共石が株式会社ジャパンエナジーに商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/4",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "日本石油が三菱石油を合併、日石三菱株式会社に商号変更",
      "detail": "",
      "significance": "平成期石油業界再編の先駆け",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/7",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ゼネラル石油が東燃を合併、東燃ゼネラル石油に商号変更",
      "detail": "",
      "significance": "後のENEOSグループに統合される外資系の再編",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日石三菱精製が興亜石油・東北石油を合併、新日本石油精製に商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/6",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日石三菱株式会社が新日本石油株式会社に商号変更",
      "detail": "",
      "significance": "旧日石と三菱石油統合後のブランド一本化",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/9",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ジャパンエナジーと日鉱金属が株式移転で新日鉱ホールディングスを設立",
      "detail": "",
      "significance": "日鉱グループ持株会社体制への移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "新日本石油が九州石油を合併",
      "detail": "子会社の新日本石油精製が大分製油所事業を承継した上での合併",
      "significance": "元売上位への寡占化加速",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/12",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "新日本石油と新日鉱ホールディングスが経営統合の基本覚書を締結",
      "detail": "",
      "significance": "国内石油元売最大手誕生の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/10",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "両社が株式移転による経営統合契約を締結",
      "detail": "JXホールディングス設立を決定",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "株式上場",
      "region": "",
      "importance": 4,
      "event": "JXホールディングス株式会社設立、東証・大証・名証に上場",
      "detail": "新日本石油・新日鉱HDを完全子会社化",
      "significance": "国内石油元売業界最大の再編、需要縮小市場での先行事例",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "高萩光紀が初代社長に就任",
      "detail": "旧新日本石油出身。統合を主導",
      "significance": "石油元売統合再編の象徴的経営者",
      "source": ""
    },
    {
      "date": "2010/7",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "事業会社3社を設立（JX日鉱日石エネルギー、同開発、同金属）",
      "detail": "石油精製・開発・金属事業を再編",
      "significance": "統合後の事業セグメント再構築",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "松下功夫が2代社長に就任",
      "detail": "東燃ゼネラル石油との統合交渉を推進",
      "significance": "業界トップ元売グループへの道筋を築く",
      "source": ""
    },
    {
      "date": "2015/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "通期で初の大規模赤字転落",
      "detail": "",
      "significance": "資源価格下落による石油元売業界全体の構造不況を象徴",
      "source": "有価証券報告書",
      "amount": "営業赤字▲2,189億円、純損失▲2,772億円"
    },
    {
      "date": "2014/6",
      "category": "社長交代",
      "region": "",
      "importance": 1,
      "event": "内田幸雄が3代社長に就任",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "2期連続の赤字",
      "detail": "",
      "significance": "在庫影響と資源安による連続赤字",
      "source": "有価証券報告書",
      "amount": "営業赤字▲622億円、純損失▲2,785億円"
    },
    {
      "date": "2016/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "事業会社3社がJXエネルギー・JX石油開発・JX金属に商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/4",
      "category": "組織再編",
      "region": "",
      "importance": 4,
      "event": "東燃ゼネラル石油を完全子会社化しJXTGホールディングスに商号変更",
      "detail": "株式交換により東燃ゼネラルを子会社化、JXエネルギーが吸収合併。JXエネルギーはJXTGエネルギーに商号変更",
      "significance": "国内石油元売市場シェア50%超の寡占体制確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/6",
      "category": "社長交代",
      "region": "",
      "importance": 1,
      "event": "杉森務が4代社長に就任",
      "detail": "2018年社長就任とされるが有報上FY17から代表取締役社長",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/6",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "JXTGホールディングスがENEOSホールディングスに商号変更",
      "detail": "JXTGエネルギーもENEOS株式会社に商号変更",
      "significance": "給油所ブランドと持株会社名を統一、脱炭素時代のブランド再構築",
      "source": ""
    },
    {
      "date": "2021/6",
      "category": "社長交代",
      "region": "",
      "importance": 1,
      "event": "大田勝幸が5代社長に就任",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "齊藤猛が6代社長に就任",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/10",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "和歌山製油所の精製機能を停止",
      "detail": "原油処理能力を193万BDから164万BDへ削減",
      "significance": "需要縮小に対応したダウンサイジング",
      "source": "IR",
      "amount": "原油処理能力▲29万BD"
    },
    {
      "date": "2024/4",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "グループ運営体制変更、電気・都市ガス・機能材等を分社化",
      "detail": "ENEOS Powerが電気・都市ガス事業承継、ENEOSマテリアルが機能材承継、ENEOSリニューアブル・エナジーを子会社化",
      "significance": "事業特性に応じた自律型経営への転換",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/12",
      "category": "社長交代",
      "region": "",
      "importance": 3,
      "event": "齊藤猛社長を不祥事により解任",
      "detail": "",
      "significance": "エネルギー業界最大手のガバナンス問題として異例の退任",
      "source": ""
    },
    {
      "date": "2025/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "JX石油開発がENEOS Xplora株式会社に商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/3",
      "category": "株式上場",
      "region": "",
      "importance": 4,
      "event": "JX金属が東証プライムに新規上場、持分法適用会社化",
      "detail": "当社保有株式の一部を売出し",
      "significance": "グループ運営体制の大転換、非鉄事業の独立",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/3",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "宮田知秀が新社長CEOに就任",
      "detail": "",
      "significance": "脱炭素を経営の中心に据えた新体制",
      "source": ""
    },
    {
      "date": "2025/7",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "米Par Pacific・三菱商事とバイオ燃料製造販売事業に参入合意",
      "detail": "ハワイ州Kapolei製油所で年間約15万KLのSAF製造計画。投資額74億円",
      "significance": "海外バイオ燃料事業を戦略投資の中核に位置付け",
      "source": "IR",
      "amount": "投資額74億円、SAF年15万KL"
    }
  ]
}