| SC 13G/A | 2024-02-14 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2023-10-27 | GLAZER CAPITAL, LLC | Heritage-Crystal Clean, Inc. | 0 | 0.0% | EDGAR |
| SC 13G | 2023-09-25 | GLAZER CAPITAL, LLC | Heritage-Crystal Clean, Inc. | 1,277,635 | 5.2% | EDGAR |
| SC 13G/A | 2023-05-18 | Maggie Trust 106 FBO F M Fehsenfeld & issue UAD 12 30 1974 | Heritage-Crystal Clean, Inc. | 46,049 | 0.2% | EDGAR |
| SC 13G/A | 2023-05-18 | Fehsenfeld Fred M Jr | Heritage-Crystal Clean, Inc. | 647,647 | 2.7% | EDGAR |
| SC 13G/A | 2023-02-15 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 1,393,049 | 5.8% | EDGAR |
| SC 13G/A | 2023-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Heritage-Crystal Clean, Inc. | 2,734 | 0.0% | EDGAR |
| SC 13G/A | 2022-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Heritage-Crystal Clean, Inc. | 1,552,185 | 6.4% | EDGAR |
| SC 13G/A | 2022-02-14 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 2,129,995 | 8.8% | EDGAR |
| SC 13G/A | 2021-02-16 | PRICE T ROWE ASSOCIATES INC /MD/ | Heritage-Crystal Clean, Inc. | 1,710,374 | 7.1% | EDGAR |
| SC 13G/A | 2021-02-16 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 3,128,390 | 13.0% | EDGAR |
| SC 13G/A | 2020-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Heritage-Crystal Clean, Inc. | 1,715,877 | 7.4% | EDGAR |
| SC 13G/A | 2020-02-14 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 2,791,021 | 12.0% | EDGAR |
| SC 13G/A | 2019-02-14 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 2,477,613 | 10.7% | EDGAR |
| SC 13G | 2019-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Heritage-Crystal Clean, Inc. | 1,499,689 | 6.5% | EDGAR |
| SC 13G/A | 2019-02-13 | Cove Street Capital, LLC | Heritage-Crystal Clean, Inc. | 1,273,234 | 5.5% | EDGAR |
| SC 13G/A | 2018-02-13 | Cove Street Capital, LLC | Heritage-Crystal Clean, Inc. | 1,479,806 | 6.5% | EDGAR |
| SC 13G/A | 2018-02-09 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 2,290,730 | 10.0% | EDGAR |
| SC 13G/A | 2017-08-10 | ArrowMark Colorado Holdings LLC | Heritage-Crystal Clean, Inc. | 2,352,128 | 10.4% | EDGAR |
| SC 13G/A | 2017-02-14 | Cove Street Capital, LLC | Heritage-Crystal Clean, Inc. | 2,513,300 | 11.2% | EDGAR |