大株主
| （単位：千株） | 2016/03 | 2017/03 | 2018/03 | 2019/03 | 2020/03 | 2021/03 | 2022/03 | 2023/03 | 2024/03 | 2025/03 |
|---|---|---|---|---|---|---|---|---|---|---|
| 研創エンタープライズ | 1,280 31.8% | 960 23.9% | 780 21% | 780 21% | 780 21% | 780 21% | 780 20.8% | 780 20.7% | 780 20.6% | 780 20.6% |
| 研創親和会 | 154 3.8% | 118 3% | 132 3.6% | 163 4.4% | 166 4.5% | 137 3.7% | 154 4.1% | 183 4.8% | 206 5.4% | 218 5.7% |
| 研創社員持株会 | 191 4.8% | 197 4.9% | 203 5.5% | 206 5.6% | 199 5.4% | 197 5.3% | 186 4.9% | 181 4.8% | 186 4.9% | 189 5% |
| 肥田 亘 | 150 3.7% | 150 3.7% | 150 4% | 150 4% | 150 4% | 150 4% | 150 4% | 150 3.9% | 150 3.9% | 150 3.9% |
| 夛島 宗幸 | 49 1.3% | 67 1.8% | 71 1.9% | 82 2.2% | 98 2.6% | 97 2.6% | 93 2.4% | 108 2.8% | ||
| ゲイビ | 55 1.4% | 55 1.4% | 55 1.5% | 55 1.5% | 75 2% | 80 2.1% | 100 2.6% | 100 2.6% | 100 2.6% | 100 2.6% |
| 林 航司 | 97 2.4% | 97 2.4% | 97 2.6% | 97 2.6% | 97 2.6% | 97 2.6% | 97 2.5% | 97 2.5% | 97 2.5% | 97 2.5% |
| 林 大一郎 | 60 1.6% | 60 1.6% | 60 1.6% | 60 1.6% | 67 1.7% | 74 1.9% | 80 2.1% | 86 2.2% | ||
| 林 誠二 | 70 1.7% | 70 1.7% | 70 1.9% | 70 1.9% | 70 1.9% | 70 1.9% | 72 1.9% | 75 2% | 77 2% | 79 2.1% |
| 中島産業 | 54 1.3% | 54 1.3% | 54 1.4% | 54 1.4% | 59 1.6% | 64 1.7% | 64 1.7% | 64 1.7% | 64 1.6% | 64 1.6% |
| 丸田 稔 | 61 1.5% | |||||||||
| 明智 | 37 0.9% | |||||||||
| 今田 晴久 | 48 1.2% | |||||||||
| 日本証券金融 | 28 0.7% | |||||||||
| 計 | 2,130 53% | 1,802 44.8% | 1,652 44.4% | 1,704 45.8% | 1,730 46.5% | 1,719 46.2% | 1,772 47.3% | 1,804 48% | 1,837 48.7% | 1,873 49.5% |