| O.S. Kelly Company OH | Manufacturing | 0 | - | F |
| O.W. Lee Co., Inc. CA | - | 0 | - | - |
| O.W. Lee, Inc. TX | Manufacturing | 0 | - | F |
| O1 Communications, Inc. CA | - | 0 | - | - |
| O2 Technologies INC CA | Professional & Technical Services | 8 | $90,250 | - |
| O2M Technologies, LLC IL | Healthcare & Social Assistance | 1 | $69,576 | - |
| O3 Technology Solutions LLC NJ | Professional & Technical Services | 4 | $106,018 | - |
| O3 Technology Solutions, LLC NY | Professional & Technical Services | 2 | $92,248 | - |
| O3b Networks USA, LLC VA | Professional & Technical Services | 1 | $121,040 | - |
| o9 Solutions, Inc. TX | Professional & Technical Services | 26 | - | - |
| OA Logistics CA | - | 0 | - | - |
| OA Logistics GA | - | 0 | - | - |
| Oa Valley Hospital District CA | Healthcare & Social Assistance | 0 | - | F |
| Oacaa & Opae OH | - | 0 | - | - |
| Oak and Iron Fitness NC | Arts & Entertainment | 1 | $38,500 | - |
| Oak Beverages, Inc. (Warehouse) NY | - | 0 | - | - |
| Oak Creek Homes TX | Manufacturing | 0 | - | F |
| Oak Farms Dallas West TX | - | 0 | - | - |
| Oak Forest Management, LLC TX | Construction | 1 | $74,152 | - |
| Oak Forest Realty, LLC MA | Real Estate | 2 | $80,080 | - |
| Oak Grove Institute Foundation, Inc. CA | Healthcare & Social Assistance | 0 | - | A |
| Oak Grove Racing Gaming & Hotel KY | Arts & Entertainment | 0 | - | A |
| Oak Grove School District CA | Educational Services | 5 | $81,395 | - |
| Oak Hammock at the University of Florida, Inc. FL | Healthcare & Social Assistance | 0 | - | F |
| Oak Harbor Freight Lines CA | Transportation & Warehousing | 0 | - | F |
| Oak Harbor Freight Lines NV | Transportation & Warehousing | 0 | - | D |
| Oak Harbor Freight Lines OR | Transportation & Warehousing | 0 | - | F |
| Oak Harbor Freight Lines WA | Transportation & Warehousing | 0 | - | F |
| Oak Health Care Investors of North Carolina, INC NC | Healthcare & Social Assistance | 0 | - | F |
| Oak Health Care Investors of Richmond, Virginia, INC VA | Healthcare & Social Assistance | 0 | - | F |
| Oak Hill CT | Healthcare & Social Assistance | 0 | - | F |
| Oak Hill Advisors, LP NY | Finance & Insurance | 1 | $110,000 | - |
| Oak Hill Capital Management LLC CT | Finance & Insurance | 1 | $150,000 | - |
| Oak Hill Country Club NY | Arts & Entertainment | 0 | - | F |
| Oak Hill Manor Nursing Home NY | Healthcare & Social Assistance | 0 | - | - |
| Oak Hills Nursing & Rehab Center OH | Healthcare & Social Assistance | 0 | - | F |
| Oak Leaf Engineering CORP. NJ | Professional & Technical Services | 1 | $49,920 | - |
| Oak Point University IL | - | 0 | - | - |
| Oak Ridge Care Center WI | Healthcare & Social Assistance | 0 | - | F |
| Oak Ridge Nursing Center OK | Healthcare & Social Assistance | 0 | - | - |
| Oak Ridge Schools TN | Educational Services | 0 | - | C |
| Oak Ridge Waste & Recycling CT | Administrative & Waste Services | 0 | - | F |
| Oak Ridge Waste & Recycling of CT LLC CT | Administrative & Waste Services | 0 | - | F |
| Oak River Insurance Company CA | Professional & Technical Services | 3 | $178,073 | - |
| Oak Springs Nursery CA | Administrative & Waste Services | 0 | - | A |
| Oak Street Health MSO LLC RI | Retail Trade | 1 | $151,885 | - |
| Oak Street Health MSO, LLC IL | Healthcare & Social Assistance | 10 | $122,690 | - |
| Oak Technologies Inc. TX | Professional & Technical Services | 3 | $98,121 | - |
| Oak Terrace Senior Housing Jordan MN | Healthcare & Social Assistance | 0 | - | F |
| Oak Valley Hospital District CA | Healthcare & Social Assistance | 0 | - | F |
