| CICamie-campbell Inc-watson Industrial Park | Saint Louis | — | ◇ UNVERIFIED |
| CCChevron Chemical CO - Maryland Heights | Maryland Heights | — | ◇ UNVERIFIED |
| CICobitco INC | Chesterfield | — | ◇ UNVERIFIED |
| DADupont Automotive Technical Service-northline Industrial | Maryland Heights | — | ◇ UNVERIFIED |
| ECEarth City Supply | Bridgeton | — | ◇ UNVERIFIED |
| ECElpaco Coatings CORP | Saint Louis | — | ◇ UNVERIFIED |
| FAFaball Abandoned Containers | Saint Louis | — | ◇ UNVERIFIED |
| FCFutura Coatings Inc-futura Coatings INC | Hazelwood | — | ◇ UNVERIFIED |
| GPGreen Park-nomax LLC | Saint Louis | — | ◇ UNVERIFIED |
| HSHenkel Surface Techs | Saint Louis | — | ◇ UNVERIFIED |
| HPHuntsman Pigments Americas | Saint Louis | — | ◇ UNVERIFIED |
| KDKindeva Drug Deliveries | Saint Louis | — | ◇ UNVERIFIED |
| KPKv Pharmaceutical Company-brentwood | Brentwood | — | ◇ UNVERIFIED |
| MIMaclan Inds INC | Saint Louis | — | ◇ UNVERIFIED |
| MMMallinckrodt Medical INC - St. Louis | Hazelwood | — | ◇ UNVERIFIED |
 Meridian Medical Technologies | Saint Louis | — | ◇ UNVERIFIED |
| MMMeridian Medical Technologies INC | Saint Louis | — | ◇ UNVERIFIED |
| MPMid-states Paint & Chem CO | Saint Louis | — | ◇ UNVERIFIED |
| MEMissouri Electrochem Incorporated | Saint Louis | — | ◇ UNVERIFIED |
| NINavico Ind Dba Navy Brand Mfg CO | Saint Louis | — | ◇ UNVERIFIED |
| NPNesher Pharmaceuticals | Earth City | — | ◇ UNVERIFIED |
| NPNesher Pharmaceuticals INC | Earth City | — | ◇ UNVERIFIED |
| PIPaintco INC | Saint Louis | — | ◇ UNVERIFIED |
| PHPar Health - Webster | Saint Louis | — | ◇ UNVERIFIED |
| PBPatheon Biologics | Saint Louis | — | ◇ UNVERIFIED |
| PRPm Resources-purina Mills INC | Bridgeton | — | ◇ UNVERIFIED |
| PSPolyad Services LLC | Earth City | — | ◇ UNVERIFIED |
| PSPolyad Services LLC | Earth City | — | ◇ UNVERIFIED |
| QCQuestvapco CORP | Valley Park | — | ◇ UNVERIFIED |
| SBS & B Pharma Dba Alkem Laboratories | Fenton | — | ◇ UNVERIFIED |
| SWSherwin Williams #708470 | Saint Louis | — | ◇ UNVERIFIED |
| SMStellar Manufacturing, INC. | Hazelwood | — | ◇ UNVERIFIED |
| SLSt Louis Composting Pacific | Pacific | — | ◇ UNVERIFIED |
| THTiffany Home Prods | Fenton | — | ◇ UNVERIFIED |
| VJVi Jon LLC | Saint Louis | — | ◇ UNVERIFIED |
| WCWohl Coatings Co-maple Ave | Saint Louis | — | ◇ UNVERIFIED |
| ACAvadel Cns Pharmaceuticals, LLC | Chesterfield | — | ◐ LIKELY ACTIVE |
| BABASF Agricultural Solutions US LLC - Fenton | Fenton | 20–99 | ◐ LIKELY ACTIVE |
| BABASF Agricultural Solutions US LLC - St. Louis | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| BSBlue Sky Manufacturing | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| BBridgeton | Bridgeton | 100–499 | ◐ LIKELY ACTIVE |
| EEElemental Enzymes | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| IAIcl-ip America INC. | Saint Louis | — | ◐ LIKELY ACTIVE |
| ISIcl Specialty Products INC | Saint Louis | — | ◐ LIKELY ACTIVE |
| LILHB Industries - Berkeley | Berkeley | 20–99 | ◐ LIKELY ACTIVE |
| LILHB Industries - Jonas | Berkeley | 20–99 | ◐ LIKELY ACTIVE |
| MAMallinckrodt Ard LLC | Hazelwood | — | ◐ LIKELY ACTIVE |
| MMedix | Maryland Heights | 20–99 | ◐ LIKELY ACTIVE |
| PMPCI Manufacturing | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| PSPerimeter Solutions LP | Clayton | — | ◐ LIKELY ACTIVE |
