{
  "spec_version": "3",
  "endpoint": "financials-longterm",
  "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/decisions/",
  "api_url": "/api/4628/financials-longterm.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/decisions/",
  "source": {
    "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"
  },
  "history": [
    {
      "year": 1994,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1995,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1996,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1997,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1998,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1999,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 2000,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 2001,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 2002,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 393,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 48,
      "net_profit_jp": "当期純利益",
      "net_profit": 32,
      "net_margin": 8.142,
      "employees": null,
      "reference": null
    },
    {
      "year": 2003,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 417,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 53,
      "net_profit_jp": "当期純利益",
      "net_profit": 29,
      "net_margin": 6.954,
      "employees": null,
      "reference": null
    },
    {
      "year": 2004,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 450,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 59,
      "net_profit_jp": "当期純利益",
      "net_profit": 34,
      "net_margin": 7.555,
      "employees": null,
      "reference": null
    },
    {
      "year": 2005,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 463,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 64,
      "net_profit_jp": "当期純利益",
      "net_profit": 38,
      "net_margin": 8.207,
      "employees": null,
      "reference": null
    },
    {
      "year": 2006,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 501,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 63,
      "net_profit_jp": "当期純利益",
      "net_profit": 38,
      "net_margin": 7.584,
      "employees": null,
      "reference": null
    },
    {
      "year": 2007,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 572,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 72,
      "net_profit_jp": "当期純利益",
      "net_profit": 50,
      "net_margin": 8.741,
      "employees": null,
      "reference": null
    },
    {
      "year": 2008,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 601,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 63,
      "net_profit_jp": "当期純利益",
      "net_profit": 38,
      "net_margin": 6.322,
      "employees": null,
      "reference": null
    },
    {
      "year": 2009,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 625,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 59,
      "net_profit_jp": "当期純利益",
      "net_profit": 35,
      "net_margin": 5.6,
      "employees": null,
      "reference": null
    },
    {
      "year": 2010,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 629,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 75,
      "net_profit_jp": "当期純利益",
      "net_profit": 45,
      "net_margin": 7.154,
      "employees": null,
      "reference": null
    },
    {
      "year": 2011,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 711,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 89,
      "net_profit_jp": "当期純利益",
      "net_profit": 54,
      "net_margin": 7.594,
      "employees": null,
      "reference": null
    },
    {
      "year": 2012,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 783,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 102,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 59,
      "net_margin": 7.535,
      "employees": null,
      "reference": null
    },
    {
      "year": 2013,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 829,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 122,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 76,
      "net_margin": 9.167,
      "employees": null,
      "reference": null
    },
    {
      "year": 2014,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 949,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 145,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 91,
      "net_margin": 9.589,
      "employees": null,
      "reference": null
    },
    {
      "year": 2015,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 906,
      "operating_profit_jp": "営業利益",
      "operating_profit": 116,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 142,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 93,
      "net_margin": 10.264,
      "employees": null,
      "reference": null
    },
    {
      "year": 2016,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 926,
      "operating_profit_jp": "営業利益",
      "operating_profit": 119,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 108,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 71,
      "net_margin": 7.667,
      "employees": null,
      "reference": null
    },
    {
      "year": 2017,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 918,
      "operating_profit_jp": "営業利益",
      "operating_profit": 125,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 128,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 90,
      "net_margin": 9.803,
      "employees": null,
      "reference": null
    },
    {
      "year": 2018,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 913,
      "operating_profit_jp": "営業利益",
      "operating_profit": 114,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 113,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 79,
      "net_margin": 8.652,
      "employees": null,
      "reference": null
    },
    {
      "year": 2019,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 951,
      "operating_profit_jp": "営業利益",
      "operating_profit": 115,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 116,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 78,
      "net_margin": 8.201,
      "employees": null,
      "reference": null
    },
    {
      "year": 2020,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 960,
      "operating_profit_jp": "営業利益",
      "operating_profit": 112,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 110,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 75,
      "net_margin": 7.812,
      "employees": null,
      "reference": null
    },
    {
      "year": 2021,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 852,
      "operating_profit_jp": "営業利益",
      "operating_profit": 99,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 110,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 70,
      "net_margin": 8.215,
      "employees": null,
      "reference": null
    },
    {
      "year": 2022,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 883,
      "operating_profit_jp": "営業利益",
      "operating_profit": 104,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 129,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 88,
      "net_margin": 9.966,
      "employees": null,
      "reference": null
    },
    {
      "year": 2023,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 956,
      "operating_profit_jp": "営業利益",
      "operating_profit": 99,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 128,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 90,
      "net_margin": 9.414,
      "employees": null,
      "reference": null
    },
    {
      "year": 2024,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1009,
      "operating_profit_jp": "営業利益",
      "operating_profit": 121,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 171,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 118,
      "net_margin": 11.694,
      "employees": null,
      "reference": null
    },
    {
      "year": 2025,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1061,
      "operating_profit_jp": "営業利益",
      "operating_profit": 124,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 149,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 107,
      "net_margin": 10.084,
      "employees": null,
      "reference": null
    },
    {
      "year": 2026,
      "month": 3,
      "company_name": "エスケー化研",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 1097,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 170,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 123,
      "net_margin": 11.212,
      "employees": null,
      "reference": null
    }
  ]
}
