| MCM Marine, Inc. MI | Construction | 0 | - | F |
| MCM Quality Systems, Inc. MI | Professional & Technical Services | 1 | $113,547 | - |
| McMahon Contracting and Construction LLC. TX | Construction | 0 | - | F |
| Mcmahon Martine And Gallagher LLP NY | Professional & Technical Services | 1 | $154,000 | - |
| McMahon Tire Service Inc. IN | Manufacturing | 0 | - | F |
| McMaster-Carr Supply Company CA | Wholesale Trade | 0 | - | F |
| McMaster-Carr Supply Company GA | Wholesale Trade | 0 | - | F |
| McMaster-Carr Supply Company IL | Wholesale Trade | 0 | - | C |
| McMaster-Carr Supply Company NJ | Wholesale Trade | 0 | - | B |
| McMaster-Carr Supply Company OH | Wholesale Trade | 0 | - | C |
| McMenamin Family ShopRite INC PA | Retail Trade | 0 | - | D |
| McMichael Mills, Inc. NC | - | 0 | - | - |
| McMillan Data Communications CA | Construction | 0 | - | F |
| McMillan Electric CA | Construction | 0 | - | F |
| McMillan Electric Company WI | Manufacturing | 0 | - | F |
| McMinnville Manufacturing, LLC TN | Manufacturing | 0 | - | D |
| MCN Build, Inc. DC | Construction | 2 | $98,000 | D |
| McNairy Hospital Corporation TN | - | 0 | - | - |
| McNamara-Salvia, Inc. MA | Professional & Technical Services | 2 | $80,000 | - |
| McNational, Inc. OH | Manufacturing | 0 | - | F |
| McNaughton-McKay Electric Company MI | Wholesale Trade | 0 | - | A |
| McNeal Professional Services, Inc. GA | Professional & Technical Services | 2 | $71,032 | - |
| McNeely Plastics Products MS | Manufacturing | 0 | - | D |
| McNeese State University LA | Educational Services | 3 | $58,744 | - |
| McNeil Consumer Healthcare PA | - | 0 | - | - |
| McNeil Elder Services MA | Healthcare & Social Assistance | 0 | - | F |
| McNeilus MN | Other Services | 0 | - | C |
| McNeilus Steel ND | Wholesale Trade | 0 | - | F |
| McNeilus Steel Inc. MN | Wholesale Trade | 0 | - | B |
| McNelly Services Inc IL | Administrative & Waste Services | 0 | - | F |
| MCO Beauty Inc. NY | - | 2 | $182,375 | - |
| Mcocod INC CA | - | 1 | $75,000 | - |
| MCP Computer Products, Inc. CA | Wholesale Trade | 1 | $97,802 | - |
| MCP Sequoia WA OpCo LLC WA | Healthcare & Social Assistance | 0 | - | F |
| McPhee Electric, Ltd CT | Construction | 0 | - | C |
| McPherson College KS | - | 2 | $61,867 | - |
| MCPHS University MA | Educational Services | 13 | $121,361 | - |
| MCQ6 Logistix AZ | Transportation & Warehousing | 0 | - | F |
| McQuade Children's Services (Group Home) NY | - | 0 | - | - |
| McQuade Children's Services (School, Res Cntr, Com based Service cntr) NY | - | 0 | - | - |
| MCR Health, Inc. FL | Healthcare & Social Assistance | 3 | $138,500 | - |
| MCR Investors LLC NY | - | 1 | $215,000 | - |
| McRae Industries, Inc. NC | Manufacturing | 0 | - | F |
| McRae Industries, Inc. - Wadeville NC | Manufacturing | 0 | - | D |
| Mcrae's US Mail Service, INC. WI | Transportation & Warehousing | 0 | - | F |
| MCRT Resources LLC WA | Construction | 1 | $87,526 | - |
| MCs Garage MN | - | 0 | - | - |
| McShane Welding PA | Manufacturing | 0 | - | F |
| McShea Contracting, LLC FL | Construction | 0 | - | F |
| mcSquared AI LLC IL | Information & Media | 4 | $100,000 | - |