{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "4505",
  "company_name": "第一製薬",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4505/shareholders/",
  "api_url": "/api/4505/shareholders.json",
  "updated": "2026-09-01",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4505/shareholders/",
  "source": {
    "primary": [
      "上場会社総覧（1961年版）",
      "上場会社総覧（1956年版）",
      "上場会社総覧（1959年版）",
      "会社年鑑（1976年版）",
      "会社年鑑（1986年版）",
      "会社年鑑（1967年版）",
      "会社年鑑（1971年版）",
      "会社年鑑（1963年版）"
    ],
    "extraction": "EDINET の XBRL から機械抽出。1990 年代以前は旧有価証券報告書・年鑑類からの転記",
    "row_field": "source",
    "caveat": "持株比率は各期の開示値そのまま。信託口の名寄せは行っていない"
  },
  "long_term": [
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "日本生命保険",
      "shareholding_ratio": null,
      "shares_held": 240000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 200000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "三菱信託銀行",
      "shareholding_ratio": null,
      "shares_held": 197400,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "東京海上火災",
      "shareholding_ratio": null,
      "shares_held": 140000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "住友海上火災",
      "shareholding_ratio": null,
      "shares_held": 140000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "安田生命保険",
      "shareholding_ratio": null,
      "shares_held": 128000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "千代田生命保険",
      "shareholding_ratio": null,
      "shares_held": 100000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "北海道拓殖銀行",
      "shareholding_ratio": null,
      "shares_held": 80000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "津村 和子",
      "shareholding_ratio": null,
      "shares_held": 64000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY55",
      "period": "1955/9",
      "company_name_at_period": "第一製薬",
      "rank": 10,
      "name": "日本火災海上",
      "shareholding_ratio": null,
      "shares_held": 50000,
      "total_shares": 4800000,
      "source": "上場会社総覧（1956年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 400000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 333500,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "安田生命",
      "shareholding_ratio": null,
      "shares_held": 260000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "東京海上火災",
      "shareholding_ratio": null,
      "shares_held": 235000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "住友海上火災",
      "shareholding_ratio": null,
      "shares_held": 234000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "千代田生命",
      "shareholding_ratio": null,
      "shares_held": 160000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "三菱信託銀行",
      "shareholding_ratio": null,
      "shares_held": 150000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "北海道拓殖銀行",
      "shareholding_ratio": null,
      "shares_held": 140000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "津村 和子",
      "shareholding_ratio": null,
      "shares_held": 106700,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY58",
      "period": "1958/9",
      "company_name_at_period": "第一製薬",
      "rank": 10,
      "name": "埼玉銀行",
      "shareholding_ratio": null,
      "shares_held": 100000,
      "total_shares": 8000000,
      "source": "上場会社総覧（1959年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 1000000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 833750,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "安田生命",
      "shareholding_ratio": null,
      "shares_held": 650000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "東京海上火災",
      "shareholding_ratio": null,
      "shares_held": 587500,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "住友海上火災",
      "shareholding_ratio": null,
      "shares_held": 585000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "千代田生命",
      "shareholding_ratio": null,
      "shares_held": 400000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "三菱信託",
      "shareholding_ratio": null,
      "shares_held": 385000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "北海道拓殖銀行",
      "shareholding_ratio": null,
      "shares_held": 350000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "津村 和子",
      "shareholding_ratio": null,
      "shares_held": 266750,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 10,
      "name": "埼玉銀行",
      "shareholding_ratio": null,
      "shares_held": 250000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY60",
      "period": "1960/9",
      "company_name_at_period": "第一製薬",
      "rank": 11,
      "name": "住友生命",
      "shareholding_ratio": null,
      "shares_held": 250000,
      "total_shares": 20000000,
      "source": "上場会社総覧（1961年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "三菱信託",
      "shareholding_ratio": null,
      "shares_held": 1495000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "三井信託(大阪)",
      "shareholding_ratio": null,
      "shares_held": 1130000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 1000000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "安田信託",
      "shareholding_ratio": null,
      "shares_held": 898000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 833000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "安田生命",
      "shareholding_ratio": null,
      "shares_held": 650000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY61",
      "period": "1962/3",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "住友海上",
      "shareholding_ratio": null,
      "shares_held": 490000,
      "total_shares": null,
      "source": "会社年鑑（1963年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 3600000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "証券保有組合",
      "shareholding_ratio": null,
      "shares_held": 2405000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "三菱信託",
      "shareholding_ratio": null,
      "shares_held": 2251000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 2126000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "安田生命",
      "shareholding_ratio": null,
      "shares_held": 1658000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "東京海上",
      "shareholding_ratio": null,
      "shares_held": 1175000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "住友海上",
      "shareholding_ratio": null,
      "shares_held": 1175000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "富士銀行",
      "shareholding_ratio": null,
      "shares_held": 1050000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY65",
      "period": "1966/3",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "千代田生命",
      "shareholding_ratio": null,
      "shares_held": 1020000,
      "total_shares": null,
      "source": "会社年鑑（1967年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 3026000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 3001000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "日証金",
      "shareholding_ratio": null,
      "shares_held": 2062000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "富士銀行",
      "shareholding_ratio": null,
      "shares_held": 1850000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "香上銀行",
      "shareholding_ratio": null,
      "shares_held": 1590000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "東京海上",
      "shareholding_ratio": null,
      "shares_held": 1375000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "住友海上",
      "shareholding_ratio": null,
      "shares_held": 1375000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "千代田生命",
      "shareholding_ratio": null,
      "shares_held": 1020000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY69",
      "period": "1970/3",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "住友生命",
      "shareholding_ratio": null,
      "shares_held": 1000000,
      "total_shares": null,
      "source": "会社年鑑（1971年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 7134000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 6300000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "富士銀行",
      "shareholding_ratio": null,
      "shares_held": 5000000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "三菱信託",
      "shareholding_ratio": null,
      "shares_held": 2474000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "三菱銀行",
      "shareholding_ratio": null,
      "shares_held": 2461000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "住友信託",
      "shareholding_ratio": null,
      "shares_held": 2370000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "三井信託",
      "shareholding_ratio": null,
      "shares_held": 2324000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "住友海上",
      "shareholding_ratio": null,
      "shares_held": 2312000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "東京海上",
      "shareholding_ratio": null,
      "shares_held": 2312000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "第一製薬",
      "rank": 10,
      "name": "住友生命",
      "shareholding_ratio": null,
      "shares_held": 2082000,
      "total_shares": null,
      "source": "会社年鑑（1976年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 1,
      "name": "日本生命",
      "shareholding_ratio": null,
      "shares_held": 11312000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 2,
      "name": "住友銀行",
      "shareholding_ratio": null,
      "shares_held": 10873000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 3,
      "name": "富士銀行",
      "shareholding_ratio": null,
      "shares_held": 8877000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 4,
      "name": "安田信託",
      "shareholding_ratio": null,
      "shares_held": 7274000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 5,
      "name": "三菱銀行",
      "shareholding_ratio": null,
      "shares_held": 6050000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 6,
      "name": "住友生命",
      "shareholding_ratio": null,
      "shares_held": 5362000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 7,
      "name": "大和証券",
      "shareholding_ratio": null,
      "shares_held": 4660000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 8,
      "name": "住友海上",
      "shareholding_ratio": null,
      "shares_held": 4216000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 9,
      "name": "東京海上",
      "shareholding_ratio": null,
      "shares_held": 4179000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    },
    {
      "FY": "FY84",
      "period": "1985/3",
      "company_name_at_period": "第一製薬",
      "rank": 10,
      "name": "山一證券",
      "shareholding_ratio": null,
      "shares_held": 2923000,
      "total_shares": null,
      "source": "会社年鑑（1986年版）"
    }
  ]
}