Hampstead Park Environmental Services Investment Fund LLC (CIK 1773840) reported 17 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-17). Recent activity: Buy QRHC (28,767 shares), Buy QRHC (21,984 shares), Buy QRHC (22,158 shares), Buy QRHC (23,661 shares), Buy QRHC (13,289 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 28,767 | $42,000 |
| 2026-08-04 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 21,984 | $27,920 |
| 2026-07-02 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 22,158 | $27,919 |
| 2026-06-02 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 23,661 | $27,920 |
| 2026-05-04 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 13,289 | $15,017 |
| 2026-04-02 | Quest Resource Holding Corp (QRHC) | 10% Owner | Buy | 12,619 | $15,017 |
| 2026-03-23 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 8,500 | $7,395 |
| 2026-03-03 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 8,532 | $15,016 |
| 2026-02-03 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 6,984 | $15,016 |
| 2026-01-05 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 8,073 | $15,016 |
| 2025-12-02 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 7,987 | $15,016 |
| 2025-08-22 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 17,232 | $27,571 |
| 2025-08-14 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 10,409 | $0 |
| 2025-08-14 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 20,000 | $0 |
| 2025-04-02 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 11,472 | $29,827 |
| 2025-03-20 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 10,000 | $29,500 |
| 2025-03-20 | Quest Resource Holding Corp (QRHC) | Insider | Buy | 2,574 | $7,619 |
Source: SEC Form 4 filings · as of 2026-08-17