{
  "timeline": [
    {
      "date": "1980/12",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "大阪府泉南市に遊戯場の経営を目的として杉野興産株式会社を設立",
      "detail": "資本金300万円。同時に泉大津市にローラースケート場（ゲームコーナー併設）をオープン",
      "significance": "ラウンドワン創業（杉野興産名義）",
      "source": "有価証券報告書"
    },
    {
      "date": "1982/7",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "泉大津市にボウリング場の経営を開始",
      "detail": "",
      "significance": "ボウリング事業への参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1990/12",
      "category": "新規事業",
      "region": "",
      "importance": 3,
      "event": "堺市西区に屋内型複合レジャー施設の石津店をオープン",
      "detail": "",
      "significance": "屋内型複合レジャー施設業態の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/3",
      "category": "会社設立",
      "region": "",
      "importance": 2,
      "event": "現代表取締役社長杉野公彦他１名により株式会社ラウンドワン（旧）を設立",
      "detail": "堺市西区に資本金10百万円で設立",
      "significance": "ラウンドワン名称の発足",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/12",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "株式会社ラウンドワン（旧）を吸収合併し商号を杉野興産株式会社から株式会社ラウンドワンに変更",
      "detail": "",
      "significance": "現社名（ラウンドワン）への商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/6",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "横浜市戸塚区に関東第１号店、横浜戸塚店をオープン",
      "detail": "",
      "significance": "関東圏出店の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/8",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "大阪証券取引所市場第二部に株式を上場",
      "detail": "",
      "significance": "初の株式公開",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/12",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東京証券取引所市場第二部に株式を上場",
      "detail": "",
      "significance": "東証重複上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/9",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東京・大阪両証券取引所の市場第一部銘柄に指定",
      "detail": "",
      "significance": "東証一部昇格",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/7",
      "category": "業態転換",
      "region": "",
      "importance": 3,
      "event": "京都市伏見区に屋内型複合レジャー施設スポッチャ併設第１号店の京都伏見店をオープン",
      "detail": "",
      "significance": "スポッチャ業態の確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/4",
      "category": "会社設立|海外進出",
      "region": "米州",
      "importance": 3,
      "event": "米国にRound One Entertainment Inc.を設立",
      "detail": "",
      "significance": "米国進出の準備会社設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/8",
      "category": "海外進出",
      "region": "米州",
      "importance": 3,
      "event": "米国カリフォルニア州に海外第１号店となるプエンテヒルズ店をオープン",
      "detail": "",
      "significance": "米国出店開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/8",
      "category": "会社設立|海外進出",
      "region": "その他",
      "importance": 1,
      "event": "ロシアにRound One Rus LLCを設立",
      "detail": "後に清算",
      "significance": "ロシア進出",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/9",
      "category": "会社設立|海外進出",
      "region": "中国",
      "importance": 2,
      "event": "中国に朗玩（中国）文化娯楽有限公司を設立",
      "detail": "",
      "significance": "中国進出の準備",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/9",
      "category": "合弁設立",
      "region": "米州",
      "importance": 2,
      "event": "Kiddleton Inc.について株式会社ミダスエンターテイメント（現GENDA）と50%合弁契約を締結",
      "detail": "",
      "significance": "米国市場での合弁モデル構築",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/12",
      "category": "海外進出",
      "region": "その他",
      "importance": 1,
      "event": "ロシアモスクワ市にロシア第１号店ユーロペイスキー店をオープン",
      "detail": "後に2022年4月閉店",
      "significance": "ロシア出店（短期撤退）",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/5",
      "category": "海外進出",
      "region": "中国",
      "importance": 3,
      "event": "中国広東省に中国第１号店となる広州新塘イオンモール店をオープン",
      "detail": "",
      "significance": "中国出店開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "株主対応",
      "region": "",
      "importance": 2,
      "event": "東京証券取引所の市場区分の見直しによりプライム市場に移行",
      "detail": "",
      "significance": "市場区分再編対応",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/4",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "持株会社体制への移行のため株式会社ラウンドワンジャパンを設立",
      "detail": "",
      "significance": "HD体制への移行準備",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/4",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "屋内型複合レジャー施設の運営事業を株式会社ラウンドワンジャパンに事業承継し持株会社体制へ移行",
      "detail": "",
      "significance": "純粋持株会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/6",
      "category": "海外進出|組織再編",
      "region": "米州",
      "importance": 2,
      "event": "米国にRound One Delicious Holdings Inc.と子法人Round One Delicious USA Inc.を設立",
      "detail": "",
      "significance": "米国食事業の体制構築",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/2",
      "category": "組織再編",
      "region": "米州",
      "importance": 2,
      "event": "Round One Delicious USA Inc.に株式会社ラウンドワンデリシャスの事業を譲渡",
      "detail": "",
      "significance": "米国へ食事業の機能集約",
      "source": "有価証券報告書"
    }
  ]
}