| Marcus Hotels & Resorts IL | - | 0 | - | - |
| Marcy Laboratories, Inc. IL | Manufacturing | 0 | - | F |
| Marcy Plaza NY | Healthcare & Social Assistance | 0 | - | F |
| Marczyk Fine Foods CO | Retail Trade | 0 | - | B |
| Marden's Inc ME | Transportation & Warehousing | 0 | - | C |
| Mare Island Dry Dock LLC CA | Manufacturing | 0 | - | F |
| Marea Therapeutics Inc. CA | - | 1 | $137,154 | - |
| Mareana, INC. NJ | Information & Media | 2 | $171,000 | - |
| Marek TX | Construction | 0 | - | D |
| Marel, Inc. KS | Manufacturing | 0 | - | D |
| Marelli TN | Manufacturing | 0 | - | F |
| Marelli Automotive Lighting MI | - | 0 | - | - |
| Marelli Cabin Comfort USA, Inc. MS | - | 0 | - | - |
| Marelli North America MS | Manufacturing | 0 | - | F |
| Marelli North America, Inc. MI | Manufacturing | 3 | $107,073 | - |
| Marelli North America, Inc. TN | Manufacturing | 1 | $78,733 | - |
| Marelli North Caolina USA LLC (formerly Magneti Marelli Powertrain USA LLC) NC | - | 0 | - | - |
| Maremont TN | - | 0 | - | - |
| Maren-go Solutions Corporation WA | Professional & Technical Services | 1 | $144,000 | A |
| Marex Services Inc. NY | Finance & Insurance | 8 | $147,500 | - |
| Marfega Trading CO., INC MP | Real Estate | 1 | $35,360 | - |
| Margaret A Cargill Philanthropic Services LLC MN | - | 1 | $127,650 | - |
| Margaret F. Macias, Licensed Marriage and Family Therapist CA | Healthcare & Social Assistance | 1 | $83,200 | - |
| Margaret Mary Community Hospital (dba Margaret Mary Health) IN | - | 0 | - | - |
| Margaret Mary Health IN | Healthcare & Social Assistance | 0 | - | F |
| Margaret O'Leary Inc. CA | Manufacturing | 1 | $85,000 | - |
| Margaritaville AZ | - | 0 | - | - |
| Margaritaville Casino MS | - | 0 | - | - |
| Margaritaville Hollywood Beach Resort FL | - | 0 | - | - |
| Margaritaville Hotel Nashville TN | - | 0 | - | - |
| Margaritaville Resort Casino LA | - | 0 | - | - |
| Margaritaville resort Palm Springs CA | - | 0 | - | - |
| Marge Carson, Inc. CA | - | 0 | - | - |
| Margin Department, LLC TX | - | 1 | $180,000 | - |
| Margin5 Solutions INC. NJ | Professional & Technical Services | 14 | $100,110 | - |
| MarginPoint CA | - | 1 | $145,500 | - |
| Margiric Farm, LLC FL | Agriculture & Forestry | 0 | - | A |
| Marglen Industries GA | Manufacturing | 0 | - | F |
| Marguerite Concrete Inc MA | Construction | 0 | - | F |
| Maria Droste Services of Colorado, Inc. CO | Healthcare & Social Assistance | 2 | $51,251 | - |
| Maria E Marzo Dds PC NY | Healthcare & Social Assistance | 1 | $200,000 | - |
| Maria Health Care Center MD | - | 0 | - | - |
| Maria Parham Health NC | Healthcare & Social Assistance | 0 | - | F |
| Maria's Holding Corp. dba Maria's Italian Kitchen Inc. CA | - | 0 | - | - |
| Marian Community Hospital, Outpatient Clinic I, II, Outpatient Center II, Endless Mountains Medical Clinic, Waymart Family Medical Center PA | - | 0 | - | - |
| Marian Estates OR | Healthcare & Social Assistance | 0 | - | F |
| Marian Inc. IN | Manufacturing | 0 | - | C |
| Marian Manor Skilled Nursing MA | Healthcare & Social Assistance | 0 | - | - |
| Marian University, Inc. IN | Educational Services | 5 | $82,500 | - |
| Marian Village Corporation MI | Healthcare & Social Assistance | 0 | - | - |