| Marion Health IN | Healthcare & Social Assistance | 0 | — | F |
| Marion Manufacturing IL | Manufacturing | 0 | — | F |
| Marion Manufacturing Company CT | Manufacturing | 0 | — | A |
| Marion Manufacturing, Inc. KS | Manufacturing | 0 | — | A |
| Marion Masonry Materials of Ocala, LLC FL | Manufacturing | 0 | — | F |
| Marion Mold & Tool, Inc. VA | Manufacturing | 0 | — | A |
| Marion Park District IL | Public Administration | 0 | — | F |
| Marion Post Acute dba Presidential Post Acute OH | Healthcare & Social Assistance | 0 | — | F |
| Marion Process Solutions, Inc. IA | Manufacturing | 0 | — | A |
| MARION REGIONAL MEDICAL CENTER, INC. AL | Healthcare & Social Assistance | 1 | $227,509 | — |
| Marion Street Capital Partners, LP PA | Professional & Technical Services | 1 | $72,500 | — |
| MARION WOODS FL | Healthcare & Social Assistance | 0 | — | A |
| Marion Youth Center VA | — | 0 | — | — |
| Mariott Denver Tech Center CO | — | 0 | — | — |
| Mariott Laguna Cliffs Resort CA | — | 0 | — | — |
| Mariott Ownership Resorts, Inc CA | — | 0 | — | — |
| Mariott Resorts Hospitality Corporation CA | — | 0 | — | — |
| Mariott Welding Inc. CA | Construction | 0 | — | F |
| Mariottini Construction Inc. IL | Construction | 0 | — | A |
| Mariplast North America Inc. SC | Manufacturing | 0 | — | F |
| Mariposa FL | Healthcare & Social Assistance | 0 | — | F |
| Mariposa Landscape Arizona Inc. AZ | Administrative & Waste Services | 0 | — | F |
| Mariposa Landscapes Inc CA | Administrative & Waste Services | 0 | — | F |
| Mariposa Natural Foods CA | Retail Trade | 0 | — | A |
| Mariposa Tree Management CA | Administrative & Waste Services | 0 | — | F |
| Marist College NY | Educational Services | 1 | $73,000 | — |
| Marist School GA | Educational Services | 0 | — | F |
| Maritech Machine Inc. FL | Manufacturing | 0 | — | A |
| Maritima LLC d/b/a LaSirena NY | — | 0 | — | — |
| MARITIME APPLIED PHYSICS CORPORATION MD | Professional & Technical Services | 0 | — | F |
| MARITIME DRILLING CONSULTANCY TX | Professional & Technical Services | 1 | $80,900 | — |
| Maritime F & B, LLC @ Maritime Hotel NY | — | 0 | — | — |
| Maritime Tactical Systems Inc FL | Manufacturing | 0 | — | A |
| Maritime Terminal, Inc. MA | Transportation & Warehousing | 0 | — | A |
| Maritz MI | — | 0 | — | — |
| Maritz MO | Administrative & Waste Services | 0 | — | A |
| Maritz PA | — | 0 | — | — |
| Maritz Consulting Group MN | Professional & Technical Services | 8 | $98,702 | — |
| Maritz Holdings Inc. CA | — | 0 | — | — |
| Maritz Holdings Inc. OH | — | 0 | — | — |
| Maritz Holdings, Inc. MD | — | 0 | — | — |
| Maritz Research Inc CA | — | 0 | — | — |
| MaritzCX Research LLC MO | — | 0 | — | — |
| MarJam NY | Retail Trade | 0 | — | A |
| MarJam Supply Co., Inc. AL | Retail Trade | 0 | — | F |
| MarJam Supply Co., Inc. MA | Retail Trade | 0 | — | B |
| MarJam Supply Company CT | Retail Trade | 0 | — | F |
| MarJam Supply Company FL | Retail Trade | 0 | — | B |
| MarJam Supply Company NJ | Retail Trade | 0 | — | F |
| MarJam Supply Company, Inc. NY | Retail Trade | 0 | — | B |
