大株主の所有状況（株式数、持株比率）
[{"name":"㈲裕﨑興産","value":553840,"percentage":"31.2"},{"name":"岡﨑 勇","value":193760,"percentage":"10.91"},{"name":"光通信株式会社","value":95600,"percentage":"5.38"},{"name":"小川 由晃","value":48000,"percentage":"2.7"},{"name":"吉田 政功","value":46600,"percentage":"2.62"},{"name":"前山 満","value":46000,"percentage":"2.59"},{"name":"柿沼 祐一","value":44000,"percentage":"2.48"},{"name":"株式会社三菱UFJ銀行","value":38400,"percentage":"2.16"},{"name":"安本 雅洋","value":36700,"percentage":"2.07"},{"name":"セフテック従業員持株会","value":34040,"percentage":"1.92"}]
上位10株主の持株比率合計は64.03%です。
所有者別構成（単元数、持株比率）
[{"name":"個人その他","value":10904,"percentage":"54.96"},{"name":"その他の法人","value":7010,"percentage":"35.33"},{"name":"金融機関","value":1140,"percentage":"5.75"},{"name":"個人以外","value":0,"percentage":"2.52"},{"name":"金融商品取引業者","value":286,"percentage":"1.44"}]