{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4043",
  "company_name": "トクヤマ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4043/",
  "api_url": "/api/4043/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/4043/",
  "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": "polysilicon-entry-1984",
      "url": "/tse/4043/decisions/polysilicon-entry-1984/",
      "api_url": "/api/4043/decisions/polysilicon-entry-1984.json",
      "year": 1984,
      "month": null,
      "type": "new_business",
      "tags": [
        "pf-diversify-related",
        "st-tech",
        "st-premium"
      ],
      "title": "多結晶シリコンと乾式シリカへの参入と、東工場での製造開始",
      "subtitle": "ソーダとセメントの会社が半導体材料を手がけるか——企画部員の起案を、完成度と速度のどちらを取って立ち上げたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "malaysia-silicon-2017",
      "url": "/tse/4043/decisions/malaysia-silicon-2017/",
      "api_url": "/api/4043/decisions/malaysia-silicon-2017.json",
      "year": 2017,
      "month": null,
      "type": "divestiture",
      "tags": [
        "pf-exit",
        "gl-retreat"
      ],
      "title": "マレーシア多結晶シリコン事業からの完全撤退 ── 減損を確定し韓国OCIへ全株譲渡",
      "subtitle": "太陽電池グレードの海外大型投資をどう畳んだか——減損後の工場を持ち続けるか、損失を確定して手放すか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "silicon-overseas-return-2023",
      "url": "/tse/4043/decisions/silicon-overseas-return-2023/",
      "api_url": "/api/4043/decisions/silicon-overseas-return-2023.json",
      "year": 2023,
      "month": 5,
      "type": "alliance",
      "tags": [
        "gl-entry",
        "st-capex",
        "st-premium"
      ],
      "title": "韓国OCIとの折半合弁によるマレーシアでの半導体用多結晶シリコン生産と、ベトナム子会社の設立",
      "subtitle": "撤退した土地へ、買い手だった相手と戻るか——単独で汎用を量産するか、折半で先端の半製品に絞るか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "cement-exit-2026",
      "url": "/tse/4043/decisions/cement-exit-2026/",
      "api_url": "/api/4043/decisions/cement-exit-2026.json",
      "year": 2026,
      "month": 3,
      "type": "divestiture",
      "tags": [
        "pf-exit",
        "pf-focus",
        "bm-core-shift"
      ],
      "title": "セメント・固化材の国内販売事業の太平洋セメントへの譲渡と、製造停止の検討着手",
      "subtitle": "88年続いた「第2の祖業」をいつ畳むか——廃棄物処理の要として持ち続けるか、引き受け手がいるうちに手放すか",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "alliance",
      "count": 1,
      "url": "/api/4043/decisions/by-type/alliance.json"
    },
    {
      "key": "divestiture",
      "count": 2,
      "url": "/api/4043/decisions/by-type/divestiture.json"
    },
    {
      "key": "new_business",
      "count": 1,
      "url": "/api/4043/decisions/by-type/new_business.json"
    }
  ],
  "by_decade": [
    {
      "key": "1980s",
      "count": 1,
      "url": "/api/4043/decisions/by-decade/1980s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/4043/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 2,
      "url": "/api/4043/decisions/by-decade/2020s.json"
    }
  ]
}