{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "4628",
  "company_name": "エスケー化研",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4628/shareholders/",
  "api_url": "/api/4628/shareholders.json",
  "updated": "2026-09-06",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4628/shareholders/",
  "source": {
    "primary": [
      "有価証券報告書（大株主の状況）"
    ],
    "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"
  },
  "shareholders": [
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      "FY": "FY15",
      "period": "2016/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 26.48,
      "shares_held": 4151000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "ステートストリートバンクアンドトラストカンパニー （常任代理人 香港上海銀行）",
      "shareholding_ratio": 8.12,
      "shares_held": 1272000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 3,
      "name": "ジェーピーモルガンチェースバンク380684 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 4.75,
      "shares_held": 745000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "株式会社近畿大阪銀行",
      "shareholding_ratio": 3.54,
      "shares_held": 555000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "藤井 實",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "name": "藤井 実広",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "藤井 訓広",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "エスケー化研共栄会",
      "shareholding_ratio": 2.92,
      "shares_held": 458000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 2.63,
      "shares_held": 413000
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      "period": "2016/3",
      "rank": 10,
      "name": "ビービーエイチフォーフィデリティロープライスドストックファンド（プリンシパルオールセクターサブポートフォリオ） （常任代理人 ㈱三菱東京ＵＦＪ銀行）",
      "shareholding_ratio": 2.23,
      "shares_held": 351000
    },
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      "period": "2017/3",
      "rank": 2,
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      "shareholding_ratio": 8.33,
      "shares_held": 1306000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "ジェーピーモルガンチェースバンク380684 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 4.75,
      "shares_held": 745000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "株式会社近畿大阪銀行",
      "shareholding_ratio": 3.54,
      "shares_held": 555000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "藤井 實",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "藤井 実広",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "藤井 訓広",
      "shareholding_ratio": 2.99,
      "shares_held": 469000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "エスケー化研共栄会",
      "shareholding_ratio": 2.94,
      "shares_held": 460000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 2.63,
      "shares_held": 413000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "ビービーエイチフォーフィデリティロープライスドストックファンド（プリンシパルオールセクターサブポートフォリオ） （常任代理人 ㈱三菱東京ＵＦＪ銀行）",
      "shareholding_ratio": 2.22,
      "shares_held": 348000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 30.78,
      "shares_held": 4151000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 2,
      "name": "ジェーピーモルガンチェースバンク380684 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 5.36,
      "shares_held": 723000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "株式会社近畿大阪銀行",
      "shareholding_ratio": 4.12,
      "shares_held": 555000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "藤井 實",
      "shareholding_ratio": 3.48,
      "shares_held": 469000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "藤井 実広",
      "shareholding_ratio": 3.47,
      "shares_held": 469000
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      "FY": "FY17",
      "period": "2018/3",
      "rank": 6,
      "name": "藤井 訓広",
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      "shares_held": 469000
    },
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      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "エスケー化研共栄会",
      "shareholding_ratio": 3.43,
      "shares_held": 462000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "ジェーピーモルガンチェースバンク380072 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.33,
      "shares_held": 449000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.06,
      "shares_held": 413000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
      "shareholding_ratio": 2.39,
      "shares_held": 322000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 30.79,
      "shares_held": 830000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "ジェーピーモルガンチェースバンク380684 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 5.11,
      "shares_held": 137000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 3,
      "name": "株式会社近畿大阪銀行",
      "shareholding_ratio": 4.12,
      "shares_held": 111000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 4,
      "name": "藤井 實",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "藤井 実広",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "藤井 訓広",
      "shareholding_ratio": 3.47,
      "shares_held": 93000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "ジェーピーモルガンチェースバンク380055 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.32,
      "shares_held": 89000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "エスケー化研共栄会",
      "shareholding_ratio": 3.17,
      "shares_held": 85000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.06,
      "shares_held": 82000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
      "shareholding_ratio": 2.51,
      "shares_held": 67000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 30.79,
      "shares_held": 830000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 4.12,
      "shares_held": 111000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 3,
      "name": "ノーザントラストカンパニーエイブイエフシーリフィデリティファンズ （常任代理人 香港上海銀行）",
      "shareholding_ratio": 3.71,
      "shares_held": 100000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 4,
      "name": "藤井 實",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "藤井 実広",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "藤井 訓広",
      "shareholding_ratio": 3.47,
      "shares_held": 93000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
      "shareholding_ratio": 3.44,
      "shares_held": 92000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "ジェーピーモルガンチェースバンク380055 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.32,
      "shares_held": 89000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "エスケー化研共栄会",
      "shareholding_ratio": 3.09,
      "shares_held": 83000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.06,
      "shares_held": 82000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 30.79,
      "shares_held": 830000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 2,
      "name": "ノーザントラストカンパニーエイブイエフシーリフィデリティファンズ （常任代理人 香港上海銀行）",
      "shareholding_ratio": 5.05,
      "shares_held": 136000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "ジェーピーモルガンチェースバンク385632 （常任代理人 ㈱みずほ銀行）",
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      "shares_held": 118000
    },
    {
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      "period": "2021/3",
      "rank": 4,
      "name": "株式会社日本カストディ銀行",
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      "period": "2021/3",
      "rank": 5,
      "name": "藤井 實",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "藤井 実広",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
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      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "藤井 訓広",
      "shareholding_ratio": 3.47,
      "shares_held": 93000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
      "shareholding_ratio": 3.46,
      "shares_held": 93000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "ジェーピーモルガンチェースバンク380055 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.32,
      "shares_held": 89000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.06,
      "shares_held": 82000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 30.79,
      "shares_held": 830000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "ノーザントラストカンパニーエイブイエフシーリフィデリティファンズ （常任代理人 香港上海銀行）",
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    },
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      "FY": "FY21",
      "period": "2022/3",
      "rank": 3,
      "name": "ジェーピーモルガンチェースバンク385632 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 4.38,
      "shares_held": 118000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "株式会社日本カストディ銀行",
      "shareholding_ratio": 4.12,
      "shares_held": 111000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
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      "shares_held": 100000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "藤井 實",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "藤井 実広",
      "shareholding_ratio": 3.48,
      "shares_held": 93000
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    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "藤井 訓広",
      "shareholding_ratio": 3.47,
      "shares_held": 93000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "ジェーピーモルガンチェースバンク380055 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.31,
      "shares_held": 89000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.06,
      "shares_held": 82000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 31.9,
      "shares_held": 860000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 2,
      "name": "ノーザントラストカンパニーエイブイエフシーリフィデリティファンズ （常任代理人 香港上海銀行）",
      "shareholding_ratio": 5,
      "shares_held": 134000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "ジェーピーモルガンチェースバンク385632 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 4.38,
      "shares_held": 118000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "株式会社日本カストディ銀行",
      "shareholding_ratio": 4.12,
      "shares_held": 111000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "MSCOカスタマーセキュリティーズ （常任代理人 モルガン・スタンレーMUFG証券㈱）",
      "shareholding_ratio": 4.03,
      "shares_held": 108000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "藤井 實",
      "shareholding_ratio": 3.47,
      "shares_held": 93000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "ジェーピーモルガンチェースバンク380055 （常任代理人 ㈱みずほ銀行）",
      "shareholding_ratio": 3.25,
      "shares_held": 87000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
      "name": "日本生命保険相互会社 （常任代理人 日本マスタートラスト信託銀行㈱）",
      "shareholding_ratio": 3.07,
      "shares_held": 82000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "name": "藤井 訓広",
      "shareholding_ratio": 2.92,
      "shares_held": 78000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "name": "藤井 実広",
      "shareholding_ratio": 2.91,
      "shares_held": 78000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 1,
      "name": "四国興産有限会社",
      "shareholding_ratio": 31.9,
      "shares_held": 4301000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 2,
      "name": "ノーザントラストカンパニーエイブイエフシーリフィデリティファンズ （常任代理人 香港上海銀行）",
      "shareholding_ratio": 5.39,
      "shares_held": 727000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
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}