{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "9024",
  "company_name": "西武ホールディングス",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/9024/",
  "api_url": "/api/9024/decisions.json",
  "updated": "2026-08-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/9024/",
  "count": 4,
  "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).",
  "decisions": [
    {
      "slug": "misrepresentation-delisting-2004",
      "url": "/tse/9024/decisions/misrepresentation-delisting-2004/",
      "api_url": "/api/9024/decisions/misrepresentation-delisting-2004.json",
      "year": 2004,
      "month": 10,
      "type": "misconduct",
      "tags": [
        "tr-scandal",
        "cp-delisting"
      ],
      "title": "西武鉄道の有価証券報告書虚偽記載発覚と東証上場廃止",
      "subtitle": "なぜ「堤家の株」は40年間隠し通せたのか──名義株が暴いた同族支配の限界",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "reconstruction-cerberus-goto-2005",
      "url": "/tse/9024/decisions/reconstruction-cerberus-goto-2005/",
      "api_url": "/api/9024/decisions/reconstruction-cerberus-goto-2005.json",
      "year": 2005,
      "month": 8,
      "type": "restructuring",
      "tags": [
        "tr-turnaround",
        "cp-holdings",
        "gv-talent",
        "ma-rescue"
      ],
      "title": "コクド・西武鉄道グループの再建 ── サーベラス出資と後藤高志氏招聘による持株会社化",
      "subtitle": "銀行主導の一体再生か、株主利益を掲げる対抗案か──創業家の内紛を抱えたまま進んだ西武グループ再建",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "cerberus-tob-relisting-2014",
      "url": "/tse/9024/decisions/cerberus-tob-relisting-2014/",
      "api_url": "/api/9024/decisions/cerberus-tob-relisting-2014.json",
      "year": 2014,
      "month": null,
      "type": "shareholder_proposal",
      "tags": [
        "cp-activist",
        "cp-listing"
      ],
      "title": "サーベラスのTOB阻止と東証一部再上場",
      "subtitle": "筆頭株主が仕掛けた公開買い付けに、経営陣と個人株主はどう向き合ったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "covid-loss-nishiyama-succession-2021",
      "url": "/tse/9024/decisions/covid-loss-nishiyama-succession-2021/",
      "api_url": "/api/9024/decisions/covid-loss-nishiyama-succession-2021.json",
      "year": 2021,
      "month": null,
      "type": "succession",
      "tags": [
        "tr-crisis",
        "gv-succession",
        "bm-model-shift"
      ],
      "title": "新型コロナ禍の純損失723億円を機とした社長交代と「保有と運営の分離」の始動",
      "subtitle": "保有一体型モデルの限界にどう応えるか——後藤高志氏から西山隆一郎氏への引き継ぎ",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "misconduct",
      "count": 1,
      "url": "/api/9024/decisions/by-type/misconduct.json"
    },
    {
      "key": "restructuring",
      "count": 1,
      "url": "/api/9024/decisions/by-type/restructuring.json"
    },
    {
      "key": "shareholder_proposal",
      "count": 1,
      "url": "/api/9024/decisions/by-type/shareholder_proposal.json"
    },
    {
      "key": "succession",
      "count": 1,
      "url": "/api/9024/decisions/by-type/succession.json"
    }
  ],
  "by_decade": [
    {
      "key": "2000s",
      "count": 2,
      "url": "/api/9024/decisions/by-decade/2000s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/9024/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 1,
      "url": "/api/9024/decisions/by-decade/2020s.json"
    }
  ]
}