KEYSTONE CRANBERRY, LLC (CIK 1688727) reported 8 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-20). Recent activity: Buy SND (110,063 shares), Sell SND (5,811 shares), Sell SND (5,811 shares), Buy SND (48,788 shares), Buy SND (57,420 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | Smart Sand, Inc. (SND) | Director | Buy | 110,063 | $0 |
| 2026-06-09 | Smart Sand, Inc. (SND) | Director | Sell | 5,811 | $31,670 |
| 2026-03-19 | Smart Sand, Inc. (SND) | Director | Sell | 5,811 | $23,709 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Director | Buy | 48,788 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Director | Buy | 57,420 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Director | Sell | 25,862 | $134,224 |
| 2026-03-03 | Smart Sand, Inc. (SND) | Director | Sell | 13,896 | $72,120 |
| 2026-02-24 | Smart Sand, Inc. (SND) | Director | Sell | 17,423 | $91,471 |
来源：SEC Form 4 申报文件 · 截至 2026-08-20