大株主の所有状況（株式数、持株比率）
[{"name":"坪 井 典 明","value":604000,"percentage":"13.21"},{"name":"有限会社 坪井","value":556000,"percentage":"12.16"},{"name":"光通信株式会社","value":342000,"percentage":"7.48"},{"name":"日本生命保険相互会社","value":234000,"percentage":"5.11"},{"name":"株式会社三井住友銀行","value":169000,"percentage":"3.69"},{"name":"大伸化学従業員持株会","value":148000,"percentage":"3.24"},{"name":"丸善石油化学株式会社","value":130000,"percentage":"2.84"},{"name":"INTERACTIVEBROKERS LLC（常任代理人 インタラクティブ・ブローカーズ証券株式会社）","value":103000,"percentage":"2.26"},{"name":"株式会社三菱UFJ銀行","value":73000,"percentage":"1.6"},{"name":"杉 浦 久 毅","value":70000,"percentage":"1.53"}]
上位10株主の持株比率合計は53.12%です。
所有者別構成（単元数、持株比率）
[{"name":"個人その他","value":24365,"percentage":"53.09"},{"name":"その他の法人","value":13546,"percentage":"29.51"},{"name":"金融機関","value":5330,"percentage":"11.61"},{"name":"個人以外","value":0,"percentage":"5.02"},{"name":"金融商品取引業者","value":348,"percentage":"0.76"},{"name":"個人","value":0,"percentage":"0.01"}]