{ "spec_version": "4", "endpoint": "history", "stock_code": "9616", "company_name": "共立メンテナンス", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/9616/decisions/", "api_url": "/api/9616/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/9616/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": "共立メンテナンスの歴史概略", "eras": [ { "title": "共立メンテナンスの設立と受託給食、学生寮・社員寮事業の開始", "start_year": 1979, "end_year": 1986 }, { "title": "外食とリゾートホテル、ビジネスホテル「ドーミーイン」の開始と店頭登録", "start_year": 1987, "end_year": 1998 }, { "title": "東証上場とビルネットの取得、自治体業務受託と韓国進出", "start_year": 1999, "end_year": 2016 }, { "title": "タイ進出とプライム移行、コスモスイニシア株の取得", "start_year": 2017, "end_year": 2026 } ], "summary": { "description": "共立メンテナンスの歴史。1979年、石塚晴久氏が東京都葛飾区で設立し受託給食と学生寮の運営を開始。社員寮とリゾートホテル、ビジネスホテル「ドーミーイン」、コスモスイニシアへの出資までの沿革と経緯を執筆。" }, "long_term": [ { "year": 1999, "month": 3, "company_name": "共立メンテナンス", "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": "共立メンテナンス", "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": "共立メンテナンス", "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": "共立メンテナンス", "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": 36, "net_profit_jp": "当期純利益", "net_profit": 18, "net_margin": 3.592, "employees": null, "reference": null }, { "year": 2003, "month": 3, "company_name": "共立メンテナンス", "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": 39, "net_profit_jp": "当期純利益", "net_profit": 20, "net_margin": 3.992, "employees": null, "reference": null }, { "year": 2004, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 541, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 41, "net_profit_jp": "当期純利益", "net_profit": 21, "net_margin": 3.881, "employees": null, "reference": null }, { "year": 2005, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 580, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 44, "net_profit_jp": "当期純利益", "net_profit": 23, "net_margin": 3.965, "employees": null, "reference": null }, { "year": 2006, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 631, "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": 20, "net_margin": 3.169, "employees": null, "reference": null }, { "year": 2007, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 663, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 38, "net_profit_jp": "当期純利益", "net_profit": 24, "net_margin": 3.619, "employees": null, "reference": null }, { "year": 2008, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 756, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 42, "net_profit_jp": "当期純利益", "net_profit": 27, "net_margin": 3.571, "employees": null, "reference": null }, { "year": 2009, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 823, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 45, "net_profit_jp": "当期純利益", "net_profit": 21, "net_margin": 2.551, "employees": null, "reference": null }, { "year": 2010, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 845, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 30, "net_profit_jp": "当期純利益", "net_profit": 13, "net_margin": 1.538, "employees": null, "reference": null }, { "year": 2011, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 850, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 33, "net_profit_jp": "当期純利益", "net_profit": 11, "net_margin": 1.294, "employees": null, "reference": null }, { "year": 2012, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 912, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 46, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 24, "net_margin": 2.631, "employees": 3231, "reference": null }, { "year": 2013, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 995, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 56, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 32, "net_margin": 3.216, "employees": 3357, "reference": null }, { "year": 2014, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1052, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 68, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 38, "net_margin": 3.612, "employees": 3584, "reference": null }, { "year": 2015, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1102, "operating_profit_jp": "営業利益", "operating_profit": 82, "ordinary_profit_jp": "経常利益", "ordinary_profit": 77, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 44, "net_margin": 3.992, "employees": 3895, "reference": null }, { "year": 2016, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1351, "operating_profit_jp": "営業利益", "operating_profit": 102, "ordinary_profit_jp": "経常利益", "ordinary_profit": 98, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 60, "net_margin": 4.441, "employees": 4272, "reference": null }, { "year": 2017, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1358, "operating_profit_jp": "営業利益", "operating_profit": 118, "ordinary_profit_jp": "経常利益", "ordinary_profit": 115, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 71, "net_margin": 5.228, "employees": 4576, "reference": null }, { "year": 2018, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1520, "operating_profit_jp": "営業利益", "operating_profit": 131, "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": 5.789, "employees": 4832, "reference": null }, { "year": 2019, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1628, "operating_profit_jp": "営業利益", "operating_profit": 146, "ordinary_profit_jp": "経常利益", "ordinary_profit": 143, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 96, "net_margin": 5.896, "employees": 5081, "reference": null }, { "year": 2020, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1698, "operating_profit_jp": "営業利益", "operating_profit": 112, "ordinary_profit_jp": "経常利益", "ordinary_profit": 125, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 69, "net_margin": 4.063, "employees": 5408, "reference": null }, { "year": 2021, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1213, "operating_profit_jp": "営業利益", "operating_profit": -91, "ordinary_profit_jp": "経常利益", "ordinary_profit": -91, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": -122, "net_margin": -10.058, "employees": 5580, "reference": null }, { "year": 2022, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1737, "operating_profit_jp": "営業利益", "operating_profit": 14, "ordinary_profit_jp": "経常利益", "ordinary_profit": 18, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 5, "net_margin": 0.287, "employees": 5639, "reference": null }, { "year": 2023, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1756, "operating_profit_jp": "営業利益", "operating_profit": 73, "ordinary_profit_jp": "経常利益", "ordinary_profit": 71, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 42, "net_margin": 2.391, "employees": 5682, "reference": null }, { "year": 2024, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2041, "operating_profit_jp": "営業利益", "operating_profit": 167, "ordinary_profit_jp": "経常利益", "ordinary_profit": 211, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 124, "net_margin": 6.075, "employees": 5939, "reference": null }, { "year": 2025, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2289, "operating_profit_jp": "営業利益", "operating_profit": 205, "ordinary_profit_jp": "経常利益", "ordinary_profit": 214, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 146, "net_margin": 6.378, "employees": 6213, "reference": null }, { "year": 2026, "month": 3, "company_name": "共立メンテナンス", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2752, "operating_profit_jp": "営業利益", "operating_profit": 248, "ordinary_profit_jp": "経常利益", "ordinary_profit": 262, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 187, "net_margin": 6.795, "employees": 6614, "reference": null } ] }