{
  "spec_version": "4",
  "endpoint": "history",
  "stock_code": "4509",
  "company_name": "三菱ウェルファーマ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4509/decisions/",
  "api_url": "/api/4509/history.json",
  "updated": "2026-09-26",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4509/decisions/",
  "source": {
    "long_term": {
      "primary": [
        "有価証券報告書"
      ],
      "extraction": "EDINET の XBRL、kabupro 掲載の旧有価証券報告書、会社年鑑・社史等からの転記",
      "row_field": "reference",
      "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること"
    }
  },
  "title": "三菱ウェルファーマの歴史概略",
  "summary": {
    "description": "三菱ウェルファーマ（旧ウェルファイド）の歴史。吉富製薬・ミドリ十字・三菱東京製薬の流れをくむ医薬品メーカーとして発足し、2001年に上場。2005年の上場廃止までの沿革と経緯を執筆。"
  },
  "long_term": [
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    },
    {
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    {
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