| Marvin's AL | Retail Trade | 0 | - | B |
| Marwan Al Sayed Mies Anderson Inc CA | Professional & Technical Services | 1 | $95,000 | - |
| Marwood Assets Management LLC CA | Construction | 1 | $85,000 | - |
| Marwood Nursing & Rehab MI | Healthcare & Social Assistance | 0 | - | F |
| Mary Ann Morse Healthcare Corp. MA | Healthcare & Social Assistance | 0 | - | F |
| Mary Ann's Specialty Foods IA | Manufacturing | 0 | - | A |
| Mary Free Bed Rehabilitation MI | Healthcare & Social Assistance | 0 | - | F |
| Mary Free Bed Rehabilitation Hospital MI | Healthcare & Social Assistance | 0 | - | F |
| Mary Gran Nursing Center NC | Healthcare & Social Assistance | 0 | - | F |
| Mary Greeley Medical Center IA | Healthcare & Social Assistance | 2 | $63,045 | F |
| Mary Hitchcock Memorial Hospital NH | Healthcare & Social Assistance | 14 | $63,142 | F |
| Mary Rutan Hospital OH | Healthcare & Social Assistance | 1 | $410,000 | - |
| Mary Wade Home CT | Healthcare & Social Assistance | 0 | - | F |
| Mary Washington Healtcare VA | Healthcare & Social Assistance | 0 | - | F |
| Mary Washington Healthcare VA | Healthcare & Social Assistance | 1 | $325,000 | F |
| Mary Washington Healthcare Physicians VA | Healthcare & Social Assistance | 4 | $366,250 | - |
| Mary's Tack and Feed CA | Retail Trade | 0 | - | B |
| Maryhaven Center of Hope NY | Healthcare & Social Assistance | 0 | - | F |
| Maryhaven Center of Hope Inc. (Children's Residential Program, Boy's Dormitory, Young Men's Dormitory, Center Dormitory and CRP House A and C - Port Jefferson) NY | - | 0 | - | - |
| Maryhaven Center of Hope, Inc. (Vocational Rehabilitation and Day Habilitation Transportation Services Dept.) NY | - | 0 | - | - |
| Maryhurst KY | Healthcare & Social Assistance | 0 | - | F |
| Maryland and Virginia Milk Producers Cooperative Association, Inc. dba Maola MD | - | 0 | - | - |
| Maryland Cinema Investments, LLC d/b/a Cinépolis MD | - | 0 | - | - |
| Maryland Coalition of Families MD | - | 0 | - | - |
| Maryland Department of Health MD | Public Administration | 1 | $62,754 | - |
| Maryland Department of Public Safety & Correctional Services MD | Public Administration | 0 | - | D |
| Maryland Department of Public Safety and Correctional Services MD | Public Administration | 0 | - | F |
| Maryland Health Enterprises MD | Healthcare & Social Assistance | 0 | - | F |
| Maryland Medical First, P.A. MD | Healthcare & Social Assistance | 7 | $237,857 | - |
| Maryland Sportservice, Inc. MD | - | 0 | - | - |
| Maryland University of Integrative Health, Inc. MD | - | 0 | - | - |
| Maryland Wellness LLC MD | Healthcare & Social Assistance | 1 | $100,000 | B |
| Marymont Group NY | Professional & Technical Services | 5 | $92,847 | - |
| Marymount California University CA | - | 0 | - | - |
| Marymount University VA | Educational Services | 1 | $53,040 | - |
| Marys Gone Crackers CA | - | 0 | - | - |
| Marysville Special Care Community, LLC WA | Healthcare & Social Assistance | 0 | - | F |
| Marzetti Frozen Pasta IA | Manufacturing | 0 | - | C |
| MAS Building & Bridge, Inc. MA | Construction | 1 | $152,500 | D |
| Mas Hospitality LLC FL | Accommodation & Food Services | 1 | $78,333 | - |
| Mas IT Labs LLC TX | Professional & Technical Services | 2 | $93,787 | - |
| Mas Tek IT, LLC NC | Professional & Technical Services | 1 | $61,173 | - |
| Mas US Holdings Inc NC | - | 0 | - | - |
| MAS US Holdings, Inc. NC | Transportation & Warehousing | 0 | - | D |
| Masa NY, LLC dba Masa and Bar Masa NY | - | 0 | - | - |
| Masaba Inc. SD | Manufacturing | 0 | - | F |
| Masabi LLC NY | Professional & Technical Services | 2 | $180,500 | - |
| Mascaro Construction Company, L.P. PA | Construction | 0 | - | A |
| Masco OH | Manufacturing | 0 | - | F |
| Masco Bath NJ | - | 0 | - | - |
