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 |
|---|---|---|---|---|---|---|---|---|---|---|
| TOS | 18,400 11.87% | 18,400 11.87% | 18,400 12.94% | 18,400 13.47% | 18,400 14.37% | 18,400 15.37% | 18,400 15.89% | 18,400 16.61% | 18,400 16.85% | 18,400 17.66% |
| 公益財団法人池谷科学技術振興財団 | 13,000 8.38% | 13,000 8.38% | 13,000 9.14% | 13,000 9.52% | 13,000 10.16% | 13,000 10.86% | 13,000 11.23% | 13,000 11.74% | 13,000 11.9% | 13,000 12.48% |
| 日本マスタートラスト信託銀行 | 2,536 1.64% | 3,261 2.1% | 3,598 2.53% | 5,047 3.7% | 5,971 4.67% | 7,783 6.5% | 13,840 11.95% | 11,826 10.68% | 10,592 9.7% | 9,409 9.03% |
| 日本カストディ銀行 | 2,677 2.24% | 9,060 7.83% | 6,743 6.09% | 5,325 4.88% | 5,459 5.24% | |||||
| MYJ | 4,800 4.01% | 4,800 4.15% | 4,800 4.33% | 4,800 4.4% | 4,800 4.61% | |||||
| 池谷 正成 | 4,592 2.96% | 4,592 2.96% | 4,592 3.23% | 4,592 3.36% | 4,592 3.59% | 4,612 3.85% | 4,612 3.98% | 4,612 4.16% | 4,612 4.22% | 4,612 4.43% |
| 酒井 真美 | 3,571 2.3% | 4,571 2.95% | 4,571 3.22% | 4,571 3.35% | 4,571 3.57% | 4,572 3.82% | 4,572 3.95% | 4,572 4.13% | 4,572 4.19% | 4,572 4.39% |
| 宜本興産 | 3,800 2.45% | 3,830 2.47% | 4,000 2.81% | 4,000 2.93% | 4,000 3.12% | 4,000 3.34% | 4,000 3.45% | 4,000 3.61% | 4,000 3.66% | 4,000 3.84% |
| MYM | 2,750 2.3% | 2,750 2.38% | 2,750 2.48% | 2,750 2.52% | 2,750 2.64% | |||||
| KSD－KB | 1,430 1.24% | 1,430 1.29% | 1,430 1.37% | |||||||
| BNYM AS AGT／CLTS 10 PERCENT | 2,414 2.21% | |||||||||
| 日本トラスティ・サービス信託銀行 | 2,996 1.93% | 6,313 4.07% | 5,427 3.82% | 7,225 5.29% | 4,293 3.35% | |||||
| 池谷 とし子 | 4,621 2.98% | 4,621 2.98% | 4,621 3.25% | 4,621 3.38% | 4,621 3.61% | |||||
| STATE STREET BANK AND TRUST COMPANY | 2,578 1.89% | 2,701 2.11% | ||||||||
| SSBTC CLIENT OMNIBUS ACCOUNT | 2,586 1.89% | |||||||||
| BNP PARIBAS SECURITIES SERVICES LUXEMBOURG／JASDEC／HENDERSON HHF SICAV | 2,817 1.82% | 4,631 3.26% | ||||||||
| J．P．MORGAN BANK LUXEMBOURG S．A． | 3,430 2.41% | |||||||||
| GOLDMAN， SACHS＆ CO， REG | 3,524 2.27% | |||||||||
| CHASE MANHATTAN BANK GTS CLIENTS ACCOUNT ESCROW | 3,203 2.07% | |||||||||
| 計 | 62,224 40.13% | 64,931 41.87% | 66,272 46.61% | 66,624 48.77% | 67,980 53.11% | 70,004 58.49% | 76,466 66.04% | 72,135 65.12% | 70,467 64.53% | 68,434 65.68% |