| Emco Termite & Pest OK | Administrative & Waste Services | 0 | — | A |
| Emco Wheaton Retail Corp NC | Manufacturing | 0 | — | F |
| Emcom Electronic Systems, Inc CA | Construction | 0 | — | A |
| EMCom Inc. NY | Manufacturing | 0 | — | F |
| EMCOR FL | Construction | 0 | — | A |
| EMCOR IL | Construction | 0 | — | D |
| EMCOR MA | Construction | 0 | — | C |
| EMCOR OH | Construction | 0 | — | F |
| EMCOR UT | Construction | 0 | — | C |
| EMCOR WI | Construction | 0 | — | D |
| Emcor Enclosures MN | Manufacturing | 0 | — | F |
| EMCOR Facilities Services, Inc. OH | — | 0 | — | — |
| EMCOR Government Services CA | Administrative & Waste Services | 0 | — | A |
| EMCOR Government Services DC | Administrative & Waste Services | 0 | — | A |
| EMCOR Government Services MD | Administrative & Waste Services | 0 | — | A |
| EMCOR Government Services TX | Administrative & Waste Services | 0 | — | A |
| EMCOR Government Services UT | Administrative & Waste Services | 0 | — | A |
| EMCOR Government Services VA | Administrative & Waste Services | 0 | — | A |
| Emcor Group NY | Construction | 0 | — | F |
| EMCOR GROUP TN | Construction | 0 | — | C |
| EMCOR Group VA | Management of Companies | 0 | — | A |
| Emcor Services PA | Construction | 0 | — | F |
| EMCOR Services - Betlem NY | Construction | 0 | — | F |
| EMCOR Services Aircond GA | Construction | 0 | — | B |
| EMCOR Services Fluidics PA | Construction | 0 | — | A |
| EMCOR Services New York New Jersey, Inc NY | Construction | 0 | — | F |
| EMCOR Services New York/New Jersey, Inc. NY | Construction | 0 | — | F |
| EMCORE Corporation CA | — | 0 | — | — |
| EMCORE Corporation - Raymond CA | — | 0 | — | — |
| EMCORE Space & NavigationCorporation NJ | Manufacturing | 0 | — | A |
| EMCUBE TECHNOLOGIES INC NC | Professional & Technical Services | 1 | $136,843 | — |
| EMD Acquisition dba Borman Specialty Materials NV | Manufacturing | 0 | — | F |
| EMD Acquisition LLC NV | Manufacturing | 0 | — | F |
| EMD Chemicals NJ | — | 0 | — | — |
| EMD Electronics NJ | Manufacturing | 0 | — | A |
| EMD Electronics SC | Manufacturing | 0 | — | A |
| EMD Millipore CA | — | 0 | — | — |
| EMD Millipore NH | Manufacturing | 0 | — | F |
| EMD MILLIPORE CORPORATION MA | Professional & Technical Services | 18 | $128,450 | A |
| EMD Performance Materials PA | Professional & Technical Services | 0 | — | A |
| EMD Performance Materials SC | Manufacturing | 0 | — | A |
| EMD Performance Materials Corp. GA | Manufacturing | 0 | — | A |
| EMD Sales, Inc MD | Wholesale Trade | 1 | $62,400 | — |
| EMD Serono Research & Development Institute, Inc. MA | — | 0 | — | — |
| EMD Serono Research and Development Institute, Inc. MA | Manufacturing | 2 | $115,340 | — |
| EMD Serono, Inc, MA | — | 0 | — | — |
| EMD Serono, Inc. MA | Wholesale Trade | 2 | $140,251 | A |
| EMDI Limited DBA BK Fire Suppression and Security Systems NY | Construction | 0 | — | F |
| eMDs, Inc. TX | Information & Media | 1 | $105,420 | — |
| EME INC CA | Manufacturing | 0 | — | F |
