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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ケアシステムズ | 3,467 21.16% | 3,467 21.16% | 3,467 21.1% | 3,467 21.49% | 3,467 21.49% | 3,467 20.86% | 3,467 20.86% | |||
| 公益財団法人 福岡直彦記念財団 | 2,791 17.03% | 2,791 17.04% | 2,791 17.04% | 2,791 16.98% | 2,791 17.3% | 2,791 17.3% | 2,791 16.79% | 2,791 16.79% | ||
| 福岡 靖介 | 1,734 10.43% | 1,734 10.43% | 1,734 10.58% | 1,103 6.84% | 1,700 10.23% | 1,805 10.86% | ||||
| BASFジャパン | 1,270 7.63% | 1,270 7.63% | 1,270 7.75% | 1,270 7.75% | 1,270 7.75% | 1,270 7.73% | 1,270 7.87% | 1,270 7.87% | 1,270 7.64% | 1,270 7.64% |
| ケミプロ化成取引先持株会 | 764 4.59% | 793 4.77% | 825 5.03% | 870 5.32% | 915 5.59% | 956 5.82% | 997 6.18% | 1,038 6.44% | 1,010 6.08% | 955 5.75% |
| みなと銀行 | 593 3.56% | 593 3.56% | 593 3.61% | 593 3.62% | 593 3.62% | 593 3.61% | 593 3.68% | 593 3.68% | 593 3.57% | 593 3.57% |
| 日本カストディ銀行 | 653 3.93% | 561 3.38% | ||||||||
| 富士工業 | 160 0.98% | 160 0.97% | 353 2.19% | 353 2.19% | 353 2.13% | 353 2.13% | ||||
| 伊藤 象二郎 | 322 1.94% | |||||||||
| BNP PARIBAS LONDON BRANCH FOR PRIME BROKERAGE CLEARANCE ACC FOR THIRD PARTY | 707 4.39% | 709 4.27% | 202 1.22% | |||||||
| 大阪中小企業投資育成 | 195 1.17% | 195 1.17% | 195 1.19% | 195 1.19% | 195 1.19% | 195 1.19% | 195 1.21% | 195 1.21% | 195 1.18% | |
| 村上 妙子 | 169 1.05% | 169 1.05% | ||||||||
| BNP PARIBAS LONDON BRANCH FOR PRIME BROKERAGE SEGREGATION ACC FOR THIRD PARTY | 652 4.04% | |||||||||
| 城北化学工業 | 310 1.92% | |||||||||
| 日本証券金融 | 344 2.06% | 304 1.82% | 316 1.92% | |||||||
| 上田八木短資 | 210 1.28% | |||||||||
| みずほ銀行 | 165 1% | 165 1.01% | 165 1.01% | 165 1% | ||||||
| 丸紅ケミックス | 249 1.49% | 249 1.49% | 249 1.51% | 249 1.52% | 249 1.52% | |||||
| 村上 勇 | 140 0.85% | 151 0.92% | ||||||||
| 服部 圭司 | 188 1.14% | 144 0.88% | ||||||||
| 船坂 陽子 | 1,733 10.42% | 1,733 10.42% | 1,733 10.57% | |||||||
| 一般財団法人 福岡直彦記念財団 | 2,791 16.79% | 2,791 16.79% | ||||||||
| 三菱UFJモルガン・スタンレー証券 | 295 1.77% | |||||||||
| SBI証券 | 224 1.34% | |||||||||
| 計 | 9,898 59.54% | 9,958 59.9% | 9,744 59.48% | 9,886 60.35% | 9,957 60.78% | 10,124 61.6% | 10,798 66.92% | 11,689 72.44% | 12,744 76.66% | 12,321 74.12% |