YOUNG CHARLES EDWIN (CIK 1687132) reported 19 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-09). Recent activity: Sell SND (5,811 shares), Sell SND (5,811 shares), Buy SND (48,788 shares), Buy SND (57,420 shares), Sell SND (25,862 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-09 | Smart Sand, Inc. (SND) | CEO | Sell | 5,811 | $31,670 |
| 2026-03-19 | Smart Sand, Inc. (SND) | CEO | Sell | 5,811 | $23,709 |
| 2026-03-03 | Smart Sand, Inc. (SND) | CEO | Buy | 48,788 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | CEO | Buy | 57,420 | $0 |
| 2026-03-03 | Smart Sand, Inc. (SND) | CEO | Sell | 25,862 | $134,224 |
| 2026-03-03 | Smart Sand, Inc. (SND) | CEO | Sell | 13,896 | $72,120 |
| 2026-02-24 | Smart Sand, Inc. (SND) | CEO | Sell | 17,423 | $91,471 |
| 2025-09-05 | Smart Sand, Inc. (SND) | CEO | Buy | 10,630 | $20,091 |
| 2025-09-05 | Smart Sand, Inc. (SND) | CEO | Buy | 8,401 | $16,130 |
| 2025-09-05 | Smart Sand, Inc. (SND) | CEO | Buy | 20,000 | $38,200 |
| 2025-08-19 | Smart Sand, Inc. (SND) | CEO | Buy | 11,498 | $21,501 |
| 2025-08-19 | Smart Sand, Inc. (SND) | CEO | Buy | 29,592 | $56,817 |
| 2025-08-19 | Smart Sand, Inc. (SND) | CEO | Buy | 8,910 | $17,464 |
| 2025-03-19 | Smart Sand, Inc. (SND) | CEO | Sell | 5,811 | $13,830 |
| 2025-03-07 | Smart Sand, Inc. (SND) | CEO | Buy | 21,954 | $0 |
| 2025-03-07 | Smart Sand, Inc. (SND) | CEO | Buy | 23,545 | $0 |
| 2025-03-07 | Smart Sand, Inc. (SND) | CEO | Sell | 11,080 | $23,268 |
| 2025-03-04 | Smart Sand, Inc. (SND) | CEO | Buy | 228,261 | $0 |
| 2025-02-25 | Smart Sand, Inc. (SND) | CEO | Sell | 18,625 | $41,906 |
Source: SEC Form 4 filings · as of 2026-06-09