{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "5991",
  "company_name": "日本発條",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5991/",
  "api_url": "/api/5991/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/5991/",
  "count": 3,
  "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": "spring-consolidation-1958",
      "url": "/tse/5991/decisions/spring-consolidation-1958/",
      "api_url": "/api/5991/decisions/spring-consolidation-1958.json",
      "year": 1958,
      "month": 5,
      "type": "merger",
      "tags": [
        "ma-merger",
        "bm-channel"
      ],
      "title": "大同発条の合併と日発販売の分離独立によるばね国内首位の地盤固め",
      "subtitle": "素材メーカーが手放したばね部門を引き受け、補修品の販路を切り離した二手",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "toyota-seat-plant-1961",
      "url": "/tse/5991/decisions/toyota-seat-plant-1961/",
      "api_url": "/api/5991/decisions/toyota-seat-plant-1961.json",
      "year": 1961,
      "month": 6,
      "type": "new_business",
      "tags": [
        "pf-diversify-related",
        "st-tech"
      ],
      "title": "豊田工場の新設によるトヨタ向け自動車シート事業への本格参入",
      "subtitle": "系列に入らない専業メーカーが、得意先ごとに工場を建てるという選び方をした",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "roic-portfolio-reform-2024",
      "url": "/tse/5991/decisions/roic-portfolio-reform-2024/",
      "api_url": "/api/5991/decisions/roic-portfolio-reform-2024.json",
      "year": 2024,
      "month": 5,
      "type": "restructuring",
      "tags": [
        "tr-restructuring",
        "cp-crossholding",
        "pf-focus"
      ],
      "title": "ROICとWACCの比較に基づく事業別の立て直しと政策保有株式の売却",
      "subtitle": "資本コストを下回った専業メーカーが、事業ごとの投下資本利益率を開示して処方を分けた",
      "status": "proposed",
      "status_label": "進行中"
    }
  ],
  "by_type": [
    {
      "key": "merger",
      "count": 1,
      "url": "/api/5991/decisions/by-type/merger.json"
    },
    {
      "key": "new_business",
      "count": 1,
      "url": "/api/5991/decisions/by-type/new_business.json"
    },
    {
      "key": "restructuring",
      "count": 1,
      "url": "/api/5991/decisions/by-type/restructuring.json"
    }
  ],
  "by_decade": [
    {
      "key": "1950s",
      "count": 1,
      "url": "/api/5991/decisions/by-decade/1950s.json"
    },
    {
      "key": "1960s",
      "count": 1,
      "url": "/api/5991/decisions/by-decade/1960s.json"
    },
    {
      "key": "2020s",
      "count": 1,
      "url": "/api/5991/decisions/by-decade/2020s.json"
    }
  ]
}