{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "5101",
  "company_name": "横浜ゴム",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5101/",
  "api_url": "/api/5101/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/5101/",
  "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": "jiritsu-5kanen-1963",
      "url": "/tse/5101/decisions/jiritsu-5kanen-1963/",
      "api_url": "/api/5101/decisions/jiritsu-5kanen-1963.json",
      "year": 1963,
      "month": 10,
      "type": "transformation",
      "title": "ブリヂストンに譲った首位からの巻き返し——新城工場と島崎敬夫社長の経営刷新",
      "subtitle": "日米合弁ゆえの意思決定の遅さで王座を明け渡したゴムの老舗は、どう自立をめざしたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "advan-goodrich-dokuritsu-1978",
      "url": "/tse/5101/decisions/advan-goodrich-dokuritsu-1978/",
      "api_url": "/api/5101/decisions/advan-goodrich-dokuritsu-1978.json",
      "year": 1978,
      "month": 12,
      "type": "transformation",
      "tags": [
        "tr-turnaround",
        "st-premium",
        "cp-crossholding"
      ],
      "title": "ADVAN発売とB.F.グッドリッチ資本離脱による独自路線の確立",
      "subtitle": "量産競争でブリヂストンに勝てず二期連続赤字に沈んだ横浜ゴムは、どこに活路を見出したか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "hagiwara-tominaga-3i-koutai-1993",
      "url": "/tse/5101/decisions/hagiwara-tominaga-3i-koutai-1993/",
      "api_url": "/api/5101/decisions/hagiwara-tominaga-3i-koutai-1993.json",
      "year": 1993,
      "month": 3,
      "type": "succession",
      "tags": [
        "tr-restructuring",
        "gv-succession"
      ],
      "title": "萩原晴二氏から冨永靖雄氏へ、危機感で継いだコスト削減と構造改革の10年",
      "subtitle": "バブル崩壊と世界寡占化の圧力のなか、二代の社長がどう「負け組」の評判に抗ったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "oht-programmatic-ma-2016",
      "url": "/tse/5101/decisions/oht-programmatic-ma-2016/",
      "api_url": "/api/5101/decisions/oht-programmatic-ma-2016.json",
      "year": 2016,
      "month": 3,
      "type": "acquisition",
      "tags": [
        "ma-rollup",
        "pf-diversify-related",
        "bm-core-shift"
      ],
      "title": "オフハイウェイタイヤ（OHT）事業への連続M&Aによる事業構成の転換",
      "subtitle": "景気変動を受けやすい乗用車用タイヤに依存した収益構造を、10年がかりの「プログラマティックM&A」でどう組み替えたか",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/5101/decisions/by-type/acquisition.json"
    },
    {
      "key": "succession",
      "count": 1,
      "url": "/api/5101/decisions/by-type/succession.json"
    },
    {
      "key": "transformation",
      "count": 2,
      "url": "/api/5101/decisions/by-type/transformation.json"
    }
  ],
  "by_decade": [
    {
      "key": "1960s",
      "count": 1,
      "url": "/api/5101/decisions/by-decade/1960s.json"
    },
    {
      "key": "1970s",
      "count": 1,
      "url": "/api/5101/decisions/by-decade/1970s.json"
    },
    {
      "key": "1990s",
      "count": 1,
      "url": "/api/5101/decisions/by-decade/1990s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/5101/decisions/by-decade/2010s.json"
    }
  ]
}