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| 序号 | 股票 | 股东 | 持股数量(万股) | 持股变动 | 股份性质 | 占总股本比例 | 报告期 |
| 1 | 301550 | 姜岭 | 11057.67 | 未变 | 限售流通股 | 32.97% | 2026-09-30 |
| 2 | 301550 | 姜岭 | 11057.67 | 增持 | 限售流通股 | 32.97% | 2026-06-30 |
| 3 | 301550 | 姜岭 | 7625.98 | 未变 | 限售流通股 | 32.97% | 2026-03-31 |
| 4 | 301550 | 姜岭 | 7625.98 | 增持 | 限售流通股 | 32.97% | 2025-12-31 |
| 5 | 301550 | 姜岭 | 5259.3 | 未变 | 限售流通股 | 32.97% | 2025-09-30 |
| 6 | 301550 | 姜岭 | 5259.30 | 未变 | 受限流通股 | 32.97% | 2025-09-16 |
| 7 | 301550 | 姜岭 | 5259.30 | 未变 | 受限流通股 | 32.97% | 2025-07-07 |
| 8 | 301550 | 姜岭 | 5259.3 | 增持 | 限售流通股 | 32.97% | 2025-06-30 |
| 9 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2025-03-31 |
| 10 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2024-12-31 |
| 11 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2024-09-30 |
| 12 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2024-06-30 |
| 13 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2024-03-31 |
| 14 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2023-12-31 |
| 15 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 32.97% | 2023-09-30 |
| 16 | 301550 | 姜岭 | 3627.10 | 未变 | 受限流通股 | 32.97% | 2023-09-15 |
| 17 | 301550 | 姜岭 | 3627.1 | 未变 | 限售流通股 | 43.96% | 2023-09-04 |
| 18 | 301550 | 姜岭 | 3627.10 | 未变 | 自然人持股 | 43.96% | 2023-08-24 |
| 19 | 301550 | 姜岭 | 3627.10 | 新进 | 自然人持股 | 43.96% | 2023-05-26 |
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