| Oklahoma Medical Research Foundation OK | Professional & Technical Services | 16 | $56,202 | - |
| Oklahoma Natural Gas OK | Utilities | 0 | - | A |
| Oklahoma Panhandle State University OK | Educational Services | 4 | $48,590 | - |
| Oklahoma Philharmonic Society, Inc OK | Arts & Entertainment | 1 | $61,173 | - |
| Oklahoma Spine Hospital OK | Healthcare & Social Assistance | 0 | - | A |
| Oklahoma State Bureau of Investigation OK | Administrative & Waste Services | 1 | $92,266 | - |
| Oklahoma State University OK | Educational Services | 49 | $72,353 | - |
| Oklahoma Steel & Wire OK | Manufacturing | 0 | - | F |
| Oklahoma Wesleyan University OK | Educational Services | 3 | $38,975 | - |
| Okland Construction UT | Construction | 1 | $175,000 | B |
| OKOS Solutions LLC VA | Manufacturing | 1 | $69,000 | A |
| Oksenholt Hospitality - Meredith Lodgin OR | - | 0 | - | - |
| Oksenholt Hospitality Company - Meredit OR | - | 0 | - | - |
| Oksenholt Hospitality Company - Mojo Re OR | - | 0 | - | - |
| Okta, Inc. CA | Professional & Technical Services | 135 | $173,215 | - |
| Okty C CORPORATION CA | - | 1 | $125,000 | - |
| OKX Technology Inc. CA | - | 3 | $184,800 | - |
| Olam Agri Americas, Inc. TX | Transportation & Warehousing | 2 | $123,600 | A |
| Olam Americas NM | Manufacturing | 0 | - | C |
| Olam Americas, LLC CA | Manufacturing | 9 | $150,000 | C |
| Olam Spices CA | Agriculture & Forestry | 0 | - | F |
| Olam Spices & Vegetables CA | - | 0 | - | - |
| Olam West Coast, Inc. CA | Manufacturing | 0 | - | F |
| Olam West Coast, Inc. NM | Manufacturing | 0 | - | F |
| Olameter Corporation KY | Administrative & Waste Services | 0 | - | F |
| Olameter Corporation WI | Administrative & Waste Services | 0 | - | F |
| Olameter Damage Prevention Group CO | Administrative & Waste Services | 0 | - | F |
| Olameter DPG, LLC WI | - | 0 | - | - |
| Olaris, Inc. MA | Professional & Technical Services | 2 | $133,063 | - |
| Olayan America Delaware, LLC NY | Finance & Insurance | 1 | $160,000 | - |
| Old Castle Building Envelope TX | Manufacturing | 0 | - | C |
| Old Country Buffet - FMP Ovation Payroll, LLC NY | - | 0 | - | - |
| Old Custom House, Inc. CA | - | 0 | - | - |
| Old Dominion Freight Line Inc AZ | Transportation & Warehousing | 0 | - | C |
| Old Dominion Freight Line Inc CA | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc CO | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc FL | Transportation & Warehousing | 0 | - | B |
| Old Dominion Freight Line Inc GA | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc IA | Transportation & Warehousing | 0 | - | F |
| Old Dominion Freight Line Inc IL | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc IN | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc KS | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc MA | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc MD | Transportation & Warehousing | 0 | - | F |
| Old Dominion Freight Line Inc MI | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc MN | Transportation & Warehousing | 0 | - | F |
| Old Dominion Freight Line Inc MO | Transportation & Warehousing | 0 | - | B |
| Old Dominion Freight Line Inc NJ | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc NV | Transportation & Warehousing | 0 | - | D |
| Old Dominion Freight Line Inc NY | Transportation & Warehousing | 0 | - | D |
