| Millrite Machine, Inc. MA | Manufacturing | 0 | — | A |
| Millrock Technology NY | Manufacturing | 0 | — | A |
| Mills & Nebraska FL | Manufacturing | 0 | — | A |
| Mills Aftermarket Accessories, Inc. IA | Retail Trade | 0 | — | A |
| Mills Aftermarket Accessories, Inc. MN | Wholesale Trade | 0 | — | B |
| Mills Aftermarket Accessories, Inc. ND | Retail Trade | 0 | — | A |
| Mills Aftermarket Accessories, Inc. SD | Retail Trade | 0 | — | A |
| Mills Air, Inc. FL | Construction | 0 | — | F |
| Mills and Schnoering Architects LLC NJ | Professional & Technical Services | 2 | $65,443 | — |
| Mills Auto Center MN | Retail Trade | 0 | — | A |
| Mills Automotive Group, Inc. MN | Management of Companies | 0 | — | F |
| Mills Brothers Masonry Contracting, LLC TX | Construction | 0 | — | F |
| Mills Company OH | Manufacturing | 0 | — | B |
| Mills Construction SD | Construction | 0 | — | F |
| Mills Fleet Farm 2019 MN | — | 0 | — | — |
| Mills Iron Works CA | Manufacturing | 0 | — | F |
| Mills Manufacturing Corporation NC | — | 0 | — | — |
| Mills Peninsula Division CA | — | 0 | — | — |
| Mills Peninsula Ext Care-Bay Area Sr Health Svcs CA | — | 0 | — | — |
| Mills Products, LLC TN | Manufacturing | 0 | — | F |
| MILLS-PENINSULA HEALTH CA | — | 0 | — | — |
| Mills-Peninsula Health Services CA | — | 0 | — | — |
| Mills-Peninsula Health Services (Extended Care) CA | — | 0 | — | — |
| Mills-Peninsula Health Services (Skilled Nursing) CA | — | 0 | — | — |
| Mills-Peninsula Medical Center CA | — | 0 | — | — |
| Millstadt Ambulance Service IL | Healthcare & Social Assistance | 0 | — | A |
| Millstadt Fire Department IL | Public Administration | 0 | — | A |
| Millstone Management Group, Inc. OH | Construction | 0 | — | F |
| Millstone Medical Outsourcing MS | Administrative & Waste Services | 0 | — | C |
| Millstone Medical Outsourcing, LLC MA | Administrative & Waste Services | 3 | $159,264 | D |
| Millstone Weber CO | Construction | 0 | — | A |
| Millstone Weber MO | Construction | 0 | — | F |
| MillTown Paper Inc. WI | Manufacturing | 0 | — | F |
| Milltown Plumbing & heating Inc. MA | Construction | 0 | — | F |
| Milltron South Inc WY | Construction | 0 | — | A |
| Milltronics USA, Inc. MN | Manufacturing | 0 | — | F |
| Millview Realty Holding Company NY | Healthcare & Social Assistance | 0 | — | F |
| MILLWOOD CABINET CO., INC. CA | Manufacturing | 0 | — | F |
| Millwood Lumber Inc OH | Manufacturing | 0 | — | F |
| Millwood, Inc. CT | Manufacturing | 0 | — | F |
| Millwood, Inc. IL | Manufacturing | 0 | — | F |
| Millwood, Inc. KY | Manufacturing | 0 | — | D |
| Millwood, Inc. MN | Manufacturing | 0 | — | F |
| Millwood, Inc. NJ | Manufacturing | 0 | — | C |
| Millwood, Inc. NY | Manufacturing | 0 | — | F |
| Millwood, Inc. OH | Manufacturing | 0 | — | D |
| Millwood, Inc. PA | Manufacturing | 0 | — | F |
| Millwood, Inc. SC | Manufacturing | 0 | — | D |
| Millwood, Inc. TN | Manufacturing | 0 | — | C |
| Millwood, Inc. WI | Manufacturing | 0 | — | F |
