{
  "timeline": [
    {
      "date": "2002/11",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "NECエレクトロニクスを設立",
      "detail": "日本電気の汎用DRAMを除く半導体事業を会社分割により分社化、神奈川県川崎市にNECの100%子会社として設立",
      "significance": "日本電気の祖業である半導体部門が独立し、後のルネサス統合母体の一つとなる",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/7",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東証一部に上場",
      "detail": "",
      "significance": "分社化翌年の早期上場により親会社からの資本的独立を準備",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/5",
      "category": "組織再編",
      "region": "中国",
      "importance": 1,
      "event": "山形日本電気の高畠工場後工程を台湾ASEに売却",
      "detail": "",
      "significance": "後工程外注化の先駆け",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "試作部門を分社化しNECファブサーブを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "NECセミコンパッケージ・ソリューションズに社名変更",
      "detail": "山口日本電気の組立・検査工程を統合",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/1",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "山形日本電気で300mmウェハ製造ライン量産稼働",
      "detail": "",
      "significance": "300mmウェハ世代への移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/10",
      "category": "組織再編",
      "region": "中国",
      "importance": 1,
      "event": "NECエレクトロニクス中国社に社名変更",
      "detail": "首鋼NECエレの開発・販売部門を北京NEC集成電路設計に統合",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "NEC化合物デバイスを吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/9",
      "category": "組織再編",
      "region": "その他",
      "importance": 1,
      "event": "NECエレクトロニクス韓国社を設立",
      "detail": "韓国営業拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/9",
      "category": "組織再編",
      "region": "欧州",
      "importance": 1,
      "event": "NECセミコンダクターズ・アイルランド社の後工程ライン閉鎖",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/11",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "NECデバイスポートを吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "NECファブサーブのフォトマスク事業を大日本印刷へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/10",
      "category": "組織再編",
      "region": "東南アジア",
      "importance": 1,
      "event": "NECセミコンダクターズ・インドネシア社の後工程ライン閉鎖",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "九州・関西・山形の製造子会社を再編",
      "detail": "九州日本電気・関西日本電気・山形日本電気をNECセミコンダクターズ各社に商号変更",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/4",
      "category": "組織再編",
      "region": "",
      "importance": 5,
      "event": "ルネサステクノロジと合併しルネサスエレクトロニクスが発足",
      "detail": "NECエレクトロニクスがルネサステクノロジと合併し商号変更",
      "significance": "日立・三菱・NEC系の国内半導体3社が統合、日本最大の半導体メーカーが誕生",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/11",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "ノキアのワイヤレスモデム事業を譲受",
      "detail": "",
      "significance": "モバイルモデム事業への本格参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "モバイルマルチメディア事業をルネサスモバイルに承継",
      "detail": "ノキアから譲受したワイヤレスモデム事業を含む",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "営業黒字転落・純損失1,150億円",
      "detail": "統合初年度。東日本大震災で那珂工場被災",
      "significance": "統合直後に震災が重なり巨額損失、再建フェーズに突入",
      "source": "有価証券報告書",
      "amount": "純損失▲1,150億円"
    },
    {
      "date": "2011/5",
      "category": "構造改革",
      "region": "",
      "importance": 1,
      "event": "ローズビル前工程ラインを独テレファンケンへ譲渡",
      "detail": "",
      "significance": "前工程リストラの本格化",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/2",
      "category": "組織再編",
      "region": "米州",
      "importance": 1,
      "event": "ブラジル販売支援拠点の営業を開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "パワーアンプ事業と長野デバイス本部を村田製作所へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "営業赤字▲568億円・純損失626億円",
      "detail": "",
      "significance": "震災・円高・汎用モデム事業の不振が直撃",
      "source": "有価証券報告書",
      "amount": "営業赤字▲568億円"
    },
    {
      "date": "2012/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "津軽工場を富士電機へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ルネサスハイコンポーネンツ株式をアオイ電子へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "純損失1,676億円",
      "detail": "",
      "significance": "統合以来最大の年間損失。抜本的再編が不可避に",
      "source": "有価証券報告書",
      "amount": "純損失▲1,676億円"
    },
    {
      "date": "2013/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "後工程3工場を日本ケイデバイスに譲渡",
      "detail": "ルネサス北日本・関西・九州セミコンダクタの函館・福井・熊本工場",
      "significance": "後工程の大規模外部化",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/6",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "作田久男から鶴丸哲哉を経て産業革新機構主導体制へ",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/9",
      "category": "組織再編",
      "region": "",
      "importance": 5,
      "event": "産業革新機構・トヨタ・日産等が第三者割当増資を引受",
      "detail": "産業革新機構が筆頭株主に。出資者にトヨタ・日産・ケーヒン・デンソー・キヤノン・ニコン・パナソニック・安川電機",
      "significance": "実質的な公的資金救済。『国有化されたルネサス』のスタート",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "販売会社等を吸収合併",
      "detail": "ルネサスエレクトロニクス販売等を簡易合併",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/10",
      "category": "事業売却",
      "region": "欧州",
      "importance": 2,
      "event": "モバイル欧州・インド子会社をブロードコムへ譲渡",
      "detail": "ルネサスモバイル・ヨーロッパ社とルネサスモバイル・インド社",
      "significance": "モバイル事業からの撤退加速",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/11",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "首鋼NECエレクトロニクス持分を首鋼総公司に譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/2",
      "category": "組織再編",
      "region": "その他",
      "importance": 1,
      "event": "インド営業拠点を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/3",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "鶴岡工場をソニーセミコンダクタへ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "営業利益676億円で黒字転換",
      "detail": "",
      "significance": "統合以来初の本格的黒字化、産業革新機構下での再建が軌道に",
      "source": "有価証券報告書",
      "amount": "営業利益676億円"
    },
    {
      "date": "2014/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "半導体前工程・後工程事業を集約再編",
      "detail": "ルネサスセミコンダクタマニュファクチュアリング・パッケージ＆テストソリューションズを設立",
      "significance": "製造子会社の集約による固定費構造改革",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "社長交代（作田久男→遠藤隆雄）",
      "detail": "",
      "significance": "産業革新機構下での経営体制刷新",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ルネサスモバイルを吸収合併",
      "detail": "ルネサスエスピードライバ株式を米シナプティクス欧州子会社へ譲渡",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "開発機能の再編",
      "detail": "デバイスソリューション開発機能をルネサスソリューションズへ、開発支援機能をルネサスエンジニアリングサービスへ移管",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/2",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "滋賀工場の一部8インチラインをロームへ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/6",
      "category": "組織再編",
      "region": "東南アジア",
      "importance": 1,
      "event": "ルネサスエレクトロニクス・シンガポール社統合",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "社長交代（遠藤隆雄→呉文精）",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/2",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "米Intersilを子会社化",
      "detail": "米アナログ半導体大手",
      "significance": "アナログ・パワー領域への本格参入。買収による拡大戦略の第一弾",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/5",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "受託開発・製造等事業を日立マクセルへ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ルネサスシステムデザインを吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/1",
      "category": "組織再編",
      "region": "米州",
      "importance": 1,
      "event": "インターシル社をルネサスエレクトロニクス・アメリカに商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/6",
      "category": "社長交代",
      "region": "",
      "importance": 3,
      "event": "社長交代（呉文精→柴田英利）",
      "detail": "",
      "significance": "柴田体制スタート。『縮みっぱなしからの脱却』を掲げ成長戦略へ転換",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/8",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ルネサスイーストン株式を一部売却し持分法適用関連会社から除外",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "高知工場を丸三産業へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "パッケージ＆テストソリューションズを吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/3",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "米IDTを子会社化",
      "detail": "米Integrated Device Technology",
      "significance": "通信・センサー・メモリーインターフェース領域を取得。アナログポートフォリオ拡充",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/12",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "営業利益62億円・純損失63億円",
      "detail": "半導体市況悪化",
      "significance": "2019年スマホ需要減速で再び一時的苦境",
      "source": "有価証券報告書",
      "amount": "営業利益62億円"
    },
    {
      "date": "2020/1",
      "category": "組織再編",
      "region": "米州",
      "importance": 1,
      "event": "IDT社をルネサスエレクトロニクス・アメリカに統合",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/8",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "英Dialog Semiconductorを子会社化",
      "detail": "英低消費電力ミックスドシグナル半導体",
      "significance": "BluetoothやPMIC等の低消費電力領域を取得。Apple供給の主要プレーヤー",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/12",
      "category": "企業買収",
      "region": "その他",
      "importance": 1,
      "event": "イスラエルCeleno Communicationsを子会社化",
      "detail": "Wi-Fi関連",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "東証プライム市場に移行",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/7",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "米Reality Analyticsを子会社化",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/10",
      "category": "企業買収",
      "region": "その他",
      "importance": 1,
      "event": "インドSteradian Semiconductorsを子会社化",
      "detail": "レーダー関連",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/12",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "営業利益4,242億円・売上1.5兆円",
      "detail": "コロナ禍の半導体不足で利益急拡大",
      "significance": "統合以来最高益。自動車・産業需要の回復で収益モデル転換が鮮明に",
      "source": "有価証券報告書",
      "amount": "営業利益4,242億円"
    },
    {
      "date": "2023/6",
      "category": "企業買収",
      "region": "欧州",
      "importance": 1,
      "event": "オーストリアPanthronicsを子会社化",
      "detail": "NFC関連",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ルネサスエンジニアリングサービスを吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/6",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "米Transphormを子会社化",
      "detail": "GaNパワー半導体",
      "significance": "GaNパワー半導体の内製化路線を確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/8",
      "category": "企業買収",
      "region": "",
      "importance": 4,
      "event": "米Altium Limitedを子会社化",
      "detail": "PCB設計ソフト・EDA",
      "significance": "ハードウェア専業からEDA・設計プラットフォーム企業への横展開",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/4",
      "category": "株主対応",
      "region": "",
      "importance": 2,
      "event": "RF事業売却・Renesas 365ローンチ",
      "detail": "embedded worldでRenesas 365を初披露、RF事業売却に伴うのれんライトオフ181億円",
      "significance": "統合プラットフォーム戦略の具体化",
      "source": "決算説明会 FY25-1Q",
      "amount": "非経常費用181億円"
    },
    {
      "date": "2025/4",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "柴田社長が株主総会で人員削減方針を表明",
      "detail": "「車載分野では競合が数千人単位の人員削減を行っている。我々のみが行わないのは損益面で劣後する」",
      "significance": "成長戦略下でも雇用構造改革を避けない姿勢",
      "source": "ニュースイッチ 2025/4"
    },
    {
      "date": "2025/7",
      "category": "株主対応",
      "region": "",
      "importance": 4,
      "event": "Wolfspeedへの預託金評価損を確定",
      "detail": "米Wolfspeedチャプター11手続き。SiC調達パートナーの経営破綻影響",
      "significance": "SiC外部調達戦略の頓挫。GAAP当期損失▲2,013億円",
      "source": "決算説明会 FY25-2Q",
      "amount": "評価損▲2,350億円"
    },
    {
      "date": "2025/7",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "SiC事業を中断",
      "detail": "Wolfspeed破綻を受け自社SiC事業を中断",
      "significance": "SiCパワー半導体の自社開発から外部パートナー調達への完全転換",
      "source": "決算説明会 FY25-2Q"
    },
    {
      "date": "2025/10",
      "category": "株主対応",
      "region": "",
      "importance": 3,
      "event": "Altium買収1年の進捗を初開示",
      "detail": "ARRがYoY15%成長、コストシナジー第一段階完了、Renesas 365年内ローンチ予定",
      "significance": "買収後のデジタル領域展開の初期評価",
      "source": "決算説明会 FY25-3Q"
    },
    {
      "date": "2026/2",
      "category": "事業売却",
      "region": "東南アジア",
      "importance": 4,
      "event": "タイミング事業を米SiTimeに譲渡発表",
      "detail": "クロック中心の事業。SiTime株の一部取得でパートナーシップ継続",
      "significance": "MEMS化トレンドを踏まえたノンコア整理。選択と集中の加速",
      "source": "決算説明会 FY25通期",
      "amount": "取引価値約30億ドル、譲渡事業売上約207百万ドル"
    },
    {
      "date": "2026/2",
      "category": "株主対応",
      "region": "",
      "importance": 3,
      "event": "Wolfspeed案件でCFIUS承認取得",
      "detail": "株式・転換社債・新株予約権の権利を取得。株式約30%取得後も持分法連結から隔離",
      "significance": "破綻パートナーへの出資を最終確定",
      "source": "決算説明会 FY25通期"
    },
    {
      "date": "2025/12",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "通期売上1.32兆円・営業利益3,869億円",
      "detail": "GAAPでは純損失▲518億円（Wolfspeed減損2,376億円）",
      "significance": "Non-GAAPでは好収益だがGAAPでは大型減損で損失計上",
      "source": "有価証券報告書",
      "amount": "売上1兆3,185億円、営業利益3,869億円、純損失▲518億円"
    }
  ]
}