| SC 13G/A | 2024-02-14 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 833,652 | 4.2% | EDGAR |
| SC 13G/A | 2023-02-14 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 791,327 | 4.0% | EDGAR |
| SC 13D/A | 2022-05-31 | Hampstead Park Capital Management, LLC | Quest Resource Holding Corp | 2,775,489 | 14.6% | EDGAR |
| SC 13G/A | 2022-02-14 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 707,078 | 3.7% | EDGAR |
| SC 13G/A | 2021-12-10 | FEDERATED HERMES, INC. | Quest Resource Holding Corp | 477,830 | 2.5% | EDGAR |
| SC 13G/A | 2021-10-08 | FEDERATED HERMES, INC. | Quest Resource Holding Corp | 1,476,405 | 7.8% | EDGAR |
| SC 13G/A | 2021-02-16 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 594,987 | 3.2% | EDGAR |
| SC 13G/A | 2021-02-12 | FEDERATED HERMES, INC. | Quest Resource Holding Corp | 2,525,000 | 13.8% | EDGAR |
| SC 13G/A | 2021-02-03 | Pinnacle Family Office Investments L.P. | Quest Resource Holding Corp | 1,986,100 | 10.8% | EDGAR |
| SC 13D/A | 2020-08-07 | Hampstead Park Environmental Services Investment Fund LLC | Quest Resource Holding Corp | 2,775,489 | 15.0% | EDGAR |
| SC 13D/A | 2020-03-24 | Hampstead Park Environmental Services Investment Fund LLC | Quest Resource Holding Corp | 2,107,205 | 13.7% | EDGAR |
| SC 13G/A | 2020-02-18 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 487,620 | 3.2% | EDGAR |
| SC 13G/A | 2020-02-14 | KITT BARRY M | Quest Resource Holding Corp | 1,076,453 | 7.0% | EDGAR |
| SC 13G/A | 2020-02-14 | FEDERATED HERMES, INC. | Quest Resource Holding Corp | 1,825,000 | 11.9% | EDGAR |
| SC 13G | 2019-12-10 | FEDERATED INVESTORS INC /PA/ | Quest Resource Holding Corp | 1,825,000 | 11.9% | EDGAR |
| SC 13G | 2019-11-04 | KITT BARRY M | Quest Resource Holding Corp | 9 | 11.0% | EDGAR |
| SC 13D | 2019-04-19 | Hampstead Park Capital Management, LLC | Quest Resource Holding Corp | 2,080,000 | 13.6% | EDGAR |
| SC 13G/A | 2019-02-14 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 343,347 | 2.2% | EDGAR |
| SC 13D/A | 2018-04-20 | SALTZ MITCHELL A | Quest Resource Holding Corp | 5,275,024 | 34.4% | EDGAR |
| SC 13G | 2018-02-14 | WYNNEFIELD PARTNERS SMALL CAP VALUE LP | Quest Resource Holding Corp | 420,262 | 2.8% | EDGAR |