| Mace North America Ltd NY | - | 6 | $137,150 | - |
| Mach 2000 Technologies, Inc. NY | Professional & Technical Services | 13 | $101,733 | - |
| Mach B Technologies Inc TX | Information & Media | 2 | $84,094 | - |
| Mach Energy NY | Information & Media | 1 | $135,000 | - |
| Mach Industries Inc. CA | - | 2 | $350,000 | - |
| Mach Machines LLC OH | Manufacturing | 1 | $103,000 | - |
| Machaon Diagnostics, Inc. CA | Healthcare & Social Assistance | 1 | $67,496 | - |
| Machete MN | - | 0 | - | - |
| Machine Intelligence LLC TX | - | 51 | $85,467 | - |
| Machine Intelligence Research Institute CA | Professional & Technical Services | 2 | $160,000 | - |
| Machine Intelligence Technologies LLC NE | Professional & Technical Services | 4 | $55,817 | - |
| Machine Intelligence Technologies LLC TX | Professional & Technical Services | 1 | $80,850 | - |
| Machine Laboratory KS | - | 0 | - | - |
| Machine Laboratory, LLC MO | - | 0 | - | - |
| Machine Learning Technologies LLC NE | Professional & Technical Services | 8 | $83,070 | - |
| Machine Learning Technologies LLC OK | Professional & Technical Services | 1 | $57,762 | - |
| Machine Learning Technologies LLC TX | Professional & Technical Services | 18 | $88,967 | - |
| Machine Specialties LLC NC | Manufacturing | 2 | $88,941 | B |
| Machine Zone, Inc. CA | - | 1 | $135,000 | - |
| Machinery Intelligence Inc CA | - | 2 | $150,000 | - |
| Machinery Marketing International IL | - | 1 | $185,000 | - |
| Machinify, Inc. CA | Professional & Technical Services | 11 | $184,226 | - |
| Machinify, Inc. TX | - | 11 | $178,506 | - |
| Machinima NU, LLC CA | - | 0 | - | - |
| Machinima, Inc. CA | - | 0 | - | - |
| Machint Solutions, LLC IL | Professional & Technical Services | 1 | $108,080 | - |
| MachMotion LLC MO | Manufacturing | 1 | $88,754 | - |
| Machu Picchu Energy LLC CA | Manufacturing | 5 | $210,080 | - |
| Machupicchu Restaurant LLC RI | Accommodation & Food Services | 1 | $67,496 | - |
| Macias Gini & O'Connell LLP CA | Professional & Technical Services | 12 | $100,676 | - |
| Macias Gini & O'Connell LLP CA | - | 14 | $86,382 | - |
| MacInnis Group, LLC PA | Manufacturing | 0 | - | F |
| MacIntosh Linen & Uniform, Inc. PA | Other Services | 0 | - | B |
| Mack Energy Corporation NM | Agriculture & Forestry | 0 | - | D |
| Mack Industries FL | Manufacturing | 0 | - | F |
| Mack Industries MI | Manufacturing | 0 | - | F |
| Mack Industries OH | Manufacturing | 0 | - | F |
| Mack Logistics LLC PA | Transportation & Warehousing | 0 | - | F |
| Mack Molding Company NC | Manufacturing | 0 | - | A |
| Mack Molding Company SC | Manufacturing | 0 | - | F |
| Mack Molding Company VT | Manufacturing | 0 | - | F |
| Mack Studios, Inc. NY | Manufacturing | 0 | - | F |
| Mack Technologies MA | Manufacturing | 2 | $148,005 | - |
| Mack Trucks Lehigh Valley Operations PA | Manufacturing | 0 | - | F |
| Mack Trucks, Inc. NC | Manufacturing | 5 | $105,267 | - |
| Mack Trucks, Inc. PA | - | 0 | - | - |
| MacKay & Somps Civil Engineers, Inc. CA | - | 1 | $106,080 | - |
| Mackay Communications, Inc. NC | Other Services | 1 | $90,002 | - |
| MacKay Manufacturing WA | Manufacturing | 0 | - | F |
| Mackenthun's Supermarket Inc MN | Retail Trade | 0 | - | C |