| MARC-Service, Inc. PA | Construction | 0 | — | A |
| Marca Manufacturing, LLC ME | Manufacturing | 0 | — | A |
| Marcal Blue Ridge Molding LLC NC | Manufacturing | 0 | — | A |
| Marcal Paper MS | Construction | 0 | — | C |
| Marcal Paper NC | Manufacturing | 0 | — | A |
| Marcal Paper Company NJ | Manufacturing | 0 | — | A |
| Marcellus Construction Company, Inc. NY | Construction | 0 | — | A |
| Marcellus International Investment Managers LLC NY | Finance & Insurance | 1 | $400,000 | — |
| Marcfirst IL | Healthcare & Social Assistance | 0 | — | F |
| March Associates Construction, Inc. NJ | Construction | 0 | — | A |
| March Capital Management, LLC CA | Finance & Insurance | 1 | $160,000 | — |
| March First Systems LLC CA | Professional & Technical Services | 2 | $98,973 | — |
| March LLC/Assisted Transportation KS | Transportation & Warehousing | 0 | — | F |
| March LLC/Assisted Transportation MO | Transportation & Warehousing | 0 | — | F |
| March Venture Capital Management Services, LLC CA | Finance & Insurance | 1 | $200,000 | — |
| March Westin Co. WV | Construction | 0 | — | F |
| Marchand manor NY | Healthcare & Social Assistance | 0 | — | A |
| Marchant Schmidt, Inc. WI | Manufacturing | 0 | — | D |
| Marchetti Distributing Co., Inc. MI | Wholesale Trade | 0 | — | A |
| Marchex, Inc. WA | Professional & Technical Services | 2 | $131,675 | — |
| Marcho Farms, Inc PA | Manufacturing | 0 | — | F |
| Marchon Partners LLC MA | Professional & Technical Services | 1 | $180,960 | — |
| Marchuska Brothers Construction, LLC NY | Construction | 0 | — | F |
| Marck Industries, Inc. AR | Administrative & Waste Services | 0 | — | F |
| Marck Recycling & Waste of NEA W AR | Administrative & Waste Services | 0 | — | F |
| Marco A. Gonzalez Engineering, Inc. DBA: MAG Engineering, Inc. CA | Construction | 0 | — | A |
| Marco Group Inc. MO | Manufacturing | 0 | — | F |
| Marco Industries OK | Manufacturing | 0 | — | D |
| Marco Petroleum Industries NH | Transportation & Warehousing | 0 | — | B |
| Marco Retailing LLC dba Super Shoes WV | — | 0 | — | — |
| Marco Rubber and Plastic NV | — | 0 | — | — |
| Marco Technologies LLC MN | Real Estate | 0 | — | C |
| Marco's Pizza MN | — | 0 | — | — |
| Marcolin USA, Inc AZ | — | 0 | — | — |
| Marcom Services VA | Manufacturing | 0 | — | F |
| MarCom, LLC CO | Administrative & Waste Services | 0 | — | A |
| MarCom, LLC ID | Administrative & Waste Services | 0 | — | A |
| MarCom, LLC MT | Administrative & Waste Services | 0 | — | A |
| MARCON BUILDER INC. CA | Construction | 1 | $150,000 | — |
| Marcon Engineering Inc. CA | Construction | 0 | — | A |
| Marcon Metal USA Inc WA | Manufacturing | 0 | — | F |
| Marcone Supply CA | Wholesale Trade | 0 | — | A |
| Marcone Supply CO | Wholesale Trade | 0 | — | A |
| Marcone Supply FL | Wholesale Trade | 0 | — | B |
| Marcone Supply ID | Wholesale Trade | 0 | — | A |
| Marcone Supply IL | Wholesale Trade | 0 | — | F |
| Marcone Supply KS | Wholesale Trade | 0 | — | A |
| Marcone Supply KY | Wholesale Trade | 0 | — | A |
| Marcone Supply MA | Wholesale Trade | 0 | — | A |
| Marcone Supply MI | Wholesale Trade | 0 | — | F |
