| Matheson Postal Services UT | — | 0 | — | — |
| Matheson Postal Services, Inc. CA | — | 0 | — | — |
| Matheson Tri Gas IA | Manufacturing | 0 | — | A |
| Matheson Tri Gas TX | Manufacturing | 0 | — | A |
| Matheson Tri-Gas CA | Wholesale Trade | 0 | — | A |
| Matheson Tri-Gas IA | Wholesale Trade | 0 | — | A |
| Matheson Tri-Gas LA | Manufacturing | 0 | — | A |
| Matheson Tri-Gas OK | Manufacturing | 0 | — | A |
| Matheson Tri-Gas OR | Manufacturing | 0 | — | F |
| Matheson Tri-Gas, Inc AZ | Wholesale Trade | 0 | — | A |
| Matheson Tri-Gas, Inc CO | Manufacturing | 0 | — | A |
| Matheson Tri-Gas, Inc FL | Wholesale Trade | 0 | — | A |
| Matheson Tri-Gas, Inc NE | Wholesale Trade | 0 | — | C |
| Matheson Tri-Gas, Inc OH | Wholesale Trade | 0 | — | C |
| Matheson Tri-Gas, Inc PA | Wholesale Trade | 0 | — | A |
| Matheson Tri-Gas, Inc TN | Manufacturing | 0 | — | A |
| Matheson Tri-Gas, Inc WI | Manufacturing | 0 | — | C |
| Matheson Tri-Gas, Inc. TX | Manufacturing | 0 | — | A |
| Matheson Trucking, Inc. CA | — | 0 | — | — |
| Mathew Enterprise Inc. dba Stevens Creek Chrysler Jeep Dodge CA | — | 0 | — | — |
| Mathew Enterprise Inc. dba Stoneridge Chrysler Jeep Dodge CA | — | 0 | — | — |
| Mathew Enterprise, Inc. dba Serramonte Subaru CA | — | 0 | — | — |
| Mathew Enterprise, Inc. dba Serramonte Volkswagon CA | — | 0 | — | — |
| Mathew Enterprises, Inc CA | Retail Trade | 0 | — | A |
| Mathews Archery, Inc WI | Manufacturing | 0 | — | F |
| MATHEWS ASSOCIATES INC FL | Manufacturing | 0 | — | D |
| Mathews Brothers Company ME | Manufacturing | 0 | — | C |
| Mathews Brothers Electric, Inc CO | Construction | 0 | — | F |
| Mathews Company IL | Manufacturing | 0 | — | F |
| MATHEWS FORD SANDUSKY INC. OH | Retail Trade | 0 | — | A |
| Mathews Mechanical CA | Other Services | 0 | — | A |
| Mathews Nielsen Landscape Architects PC NY | Professional & Technical Services | 3 | $85,896 | — |
| MATHEWS NISSAN INC TN | Retail Trade | 0 | — | F |
| Mathias Die Company MN | Manufacturing | 0 | — | F |
| Mathiowetz Construction Company MN | Construction | 0 | — | B |
| Mathis Brothers OK | — | 0 | — | — |
| MATHIS CONSTRUCTION CO., INC. NJ | Mining & Extraction | 0 | — | F |
| Mathis Health Care Center Ltd. Co. d/b/a Palma Real TX | Healthcare & Social Assistance | 0 | — | F |
| Mathis Plumbing & Heating Company, INC. SC | Construction | 0 | — | A |
| Mathison Manufacturing WI | Manufacturing | 0 | — | F |
| Mathpix, Inc. NY | Professional & Technical Services | 1 | $225,000 | — |
| Mathy Construction Company IA | Construction | 0 | — | B |
| Mathy Construction Company MN | Construction | 0 | — | A |
| Mathy Construction Company WI | Construction | 0 | — | D |
| Mathy Machine, Inc. CA | — | 0 | — | — |
| MATIC ROBOTS, INC. CA | Manufacturing | 2 | $160,000 | — |
| Matica Biotechnology, Inc. TX | Professional & Technical Services | 1 | $87,651 | F |
| Matich Corporation CA | Construction | 0 | — | F |
| Matician, Inc. CA | Manufacturing | 1 | $175,000 | — |
| Matik, Inc. CA | Information & Media | 1 | $165,000 | — |
