{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4004",
  "company_name": "レゾナックHD",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4004/",
  "api_url": "/api/4004/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/4004/",
  "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": "sgl-graphite-acquisition-2017",
      "url": "/tse/4004/decisions/sgl-graphite-acquisition-2017/",
      "api_url": "/api/4004/decisions/sgl-graphite-acquisition-2017.json",
      "year": 2017,
      "month": null,
      "type": "acquisition",
      "tags": [
        "ma-crossborder-out"
      ],
      "title": "SGLの黒鉛電極事業買収による世界トップ化「逆張り買収」の断行",
      "subtitle": "斜陽とされた黒鉛電極を市況低迷のさなかに世界規模で買い集める判断は、なぜ過去最高益へ転じたのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "hitachi-chemical-acquisition-2020",
      "url": "/tse/4004/decisions/hitachi-chemical-acquisition-2020/",
      "api_url": "/api/4004/decisions/hitachi-chemical-acquisition-2020.json",
      "year": 2020,
      "month": null,
      "type": "acquisition",
      "tags": [
        "bm-core-shift",
        "st-premium"
      ],
      "title": "日立化成の約9600億円買収と「レゾナック」への業態転換",
      "subtitle": "総合化学の看板を捨ててでも、半導体材料の世界トップを丸ごと取りに行くべきか——森川宏平社長が投じた「1兆円買収」の賭け",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "showa-denko-hitachi-chemical-2020",
      "url": "/tse/4004/decisions/showa-denko-hitachi-chemical-2020/",
      "api_url": "/api/4004/decisions/showa-denko-hitachi-chemical-2020.json",
      "year": 2020,
      "month": null,
      "type": "acquisition",
      "tags": [
        "pf-diversify-related"
      ],
      "title": "昭和電工による日立化成の買収とレゾナック誕生（2020年成立）",
      "subtitle": "なぜ昭和電工は自社の体力を上回る規模の日立化成を約9600億円で買収し、レゾナックへと至ったのか？",
      "status": "completed",
      "status_label": "成立"
    },
    {
      "slug": "resonac-formation-2023",
      "url": "/tse/4004/decisions/resonac-formation-2023/",
      "api_url": "/api/4004/decisions/resonac-formation-2023.json",
      "year": 2023,
      "month": null,
      "type": "merger",
      "tags": [
        "ma-merger",
        "cp-holdings",
        "ma-pmi"
      ],
      "title": "昭和電工と昭和電工マテリアルズの統合・レゾナック発足（2023年成立）",
      "subtitle": "「小が大を飲む」買収から始まった統合は、なぜ「第2の創業」と呼ばれ、半導体後工程材料の世界級企業を生んだのか？",
      "status": "completed",
      "status_label": "成立"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 3,
      "url": "/api/4004/decisions/by-type/acquisition.json"
    },
    {
      "key": "merger",
      "count": 1,
      "url": "/api/4004/decisions/by-type/merger.json"
    }
  ],
  "by_decade": [
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/4004/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 3,
      "url": "/api/4004/decisions/by-decade/2020s.json"
    }
  ]
}