{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4324",
  "company_name": "電通グループ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4324/",
  "api_url": "/api/4324/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/4324/",
  "count": 6,
  "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": "dentsu-crossroads-1998",
      "url": "/tse/4324/decisions/dentsu-crossroads-1998/",
      "api_url": "/api/4324/decisions/dentsu-crossroads-1998.json",
      "year": 1998,
      "month": 11,
      "type": "transformation",
      "title": "「岐路に立つ広告の王者」——3つの大波を前にした組織改革と上場・海外への布石",
      "subtitle": "広告市場でシェア2割超を握る首位企業は、揺らぎ始めた強さの基盤をどう保とうとしたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "dentsu-internet-consulting-jv-2000",
      "url": "/tse/4324/decisions/dentsu-internet-consulting-jv-2000/",
      "api_url": "/api/4324/decisions/dentsu-internet-consulting-jv-2000.json",
      "year": 2000,
      "month": 10,
      "type": "alliance",
      "title": "米SIPS最大手マーチファーストとの合弁による、ネット時代のコンサルティング事業への進出",
      "subtitle": "広告枠を押さえる王者は、なぜ広告取次の外へ踏み出そうとしたのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "dentsu-tse-listing-2001",
      "url": "/tse/4324/decisions/dentsu-tse-listing-2001/",
      "api_url": "/api/4324/decisions/dentsu-tse-listing-2001.json",
      "year": 2001,
      "month": 11,
      "type": "capital",
      "tags": [
        "cp-listing",
        "cp-crossholding"
      ],
      "title": "創業100年を経た東証一部上場——資金需要なき「広告の巨人」の株式公開",
      "subtitle": "手元資金の潤沢な非上場のガリバーは、なぜ悪環境を押して株式を公開したのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "aegis-acquisition-2012",
      "url": "/tse/4324/decisions/aegis-acquisition-2012/",
      "api_url": "/api/4324/decisions/aegis-acquisition-2012.json",
      "year": 2012,
      "month": 7,
      "type": "acquisition",
      "tags": [
        "ma-crossborder-out",
        "gl-expansion",
        "bm-digital"
      ],
      "title": "英イージス・グループの約4,000億円買収——日本の広告会社で過去最大の海外M&A",
      "subtitle": "成熟する国内市場に踏みとどまるか、海外網を丸ごと買うか——石井直社長が踏み切った過去最大のクロスボーダー買収",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "karoshi-workstyle-reform-2016",
      "url": "/tse/4324/decisions/karoshi-workstyle-reform-2016/",
      "api_url": "/api/4324/decisions/karoshi-workstyle-reform-2016.json",
      "year": 2016,
      "month": 12,
      "type": "governance",
      "tags": [
        "gv-labor",
        "tr-scandal",
        "gv-succession"
      ],
      "title": "新入社員の過労自殺を機とした働き方改革と社長交代",
      "subtitle": "長時間労働を是としてきた広告最大手が、成長一辺倒の企業風土の転換に踏み出すまで",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "overseas-impairment-2024",
      "url": "/tse/4324/decisions/overseas-impairment-2024/",
      "api_url": "/api/4324/decisions/overseas-impairment-2024.json",
      "year": 2024,
      "month": null,
      "type": "restructuring",
      "tags": [
        "gl-retreat",
        "tr-restructuring"
      ],
      "title": "海外事業（電通インターナショナル）の巨額減損とM&A路線の転換",
      "subtitle": "イージス買収で広げた海外事業はなぜ2期連続の過去最大赤字に至ったのか——のれん減損と海外再編",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/4324/decisions/by-type/acquisition.json"
    },
    {
      "key": "alliance",
      "count": 1,
      "url": "/api/4324/decisions/by-type/alliance.json"
    },
    {
      "key": "capital",
      "count": 1,
      "url": "/api/4324/decisions/by-type/capital.json"
    },
    {
      "key": "governance",
      "count": 1,
      "url": "/api/4324/decisions/by-type/governance.json"
    },
    {
      "key": "restructuring",
      "count": 1,
      "url": "/api/4324/decisions/by-type/restructuring.json"
    },
    {
      "key": "transformation",
      "count": 1,
      "url": "/api/4324/decisions/by-type/transformation.json"
    }
  ],
  "by_decade": [
    {
      "key": "1990s",
      "count": 1,
      "url": "/api/4324/decisions/by-decade/1990s.json"
    },
    {
      "key": "2000s",
      "count": 2,
      "url": "/api/4324/decisions/by-decade/2000s.json"
    },
    {
      "key": "2010s",
      "count": 2,
      "url": "/api/4324/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 1,
      "url": "/api/4324/decisions/by-decade/2020s.json"
    }
  ]
}