YOUNG WILLIAM JOHN 内部人交易：近期 SEC Form 4 交易
过去 18 个月，YOUNG WILLIAM JOHN（CIK 1687130）在 1 家公司共报告 10 笔 SEC Form 4 内部人交易（最近一笔 2026-08-20）。
| 日期 | 公司 | 身份 | 类型 | 股数 | 市值 |
|---|---|---|---|---|---|
| 2026-08-20 | Smart Sand, Inc. (SND) | Chief Operating Officer | 买入 | 62,893 | $0 |
| 2026-06-09 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 3,885 | $21,173 |
| 2026-03-19 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 3,885 | $15,851 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Chief Operating Officer | 买入 | 27,879 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Chief Operating Officer | 买入 | 32,812 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 17,292 | $89,745 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 9,291 | $48,220 |
| 2026-02-24 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 12,260 | $64,365 |
| 2025-07-31 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 7,551 | $15,706 |
| 2025-06-10 | Smart Sand, Inc. (SND) | Chief Operating Officer | 卖出 | 3,885 | $7,459 |
来源：SEC Form 4 申报文件 · 截至 2026-08-20