| Optimal Field Service, LLC LA | Construction | 0 | — | A |
| Optimal Home Care and Hospice MI | Healthcare & Social Assistance | 0 | — | F |
| Optimal Solutions Group, LLC MD | Professional & Technical Services | 1 | $112,000 | — |
| Optimal Strategix Group, Inc. PA | Professional & Technical Services | 1 | $121,742 | — |
| Optimal Technologies, Inc. GA | Professional & Technical Services | 19 | $93,289 | — |
| Optimal US Logistics Inc FL | Transportation & Warehousing | 0 | — | F |
| Optimal Workforce Solutions, LLC (At Westchester Medical Center) NY | — | 0 | — | — |
| Optimal, inc. MI | Administrative & Waste Services | 2 | $93,642 | A |
| Optimas OK | Transportation & Warehousing | 0 | — | A |
| Optimas TX | Transportation & Warehousing | 0 | — | F |
| Optimas - Circle Bolt & Nut OR | Transportation & Warehousing | 0 | — | A |
| Optimas OE Solutions NC | Manufacturing | 0 | — | A |
| Optimas OE Solutions NE | Transportation & Warehousing | 0 | — | A |
| Optimas OE Solutions NY | Transportation & Warehousing | 0 | — | A |
| Optimas OE Solutions SC | Wholesale Trade | 0 | — | A |
| Optimas OE Solutions LLC WI | Wholesale Trade | 0 | — | A |
| OPTIMAS OE SOLUTIONS, LLC IL | Professional & Technical Services | 1 | $70,000 | F |
| Optimas OE Solutions, LLC WA | Transportation & Warehousing | 0 | — | A |
| Optimas Solutions AZ | Transportation & Warehousing | 0 | — | A |
| OPTIMAS Solutions CA | Transportation & Warehousing | 0 | — | A |
| Optimas Solutions OH | Wholesale Trade | 0 | — | A |
| Optimas Solutions TN | Transportation & Warehousing | 0 | — | A |
| Optimas Solutions LLC GA | Transportation & Warehousing | 0 | — | A |
| Optimas Solutions LLC IN | Transportation & Warehousing | 0 | — | A |
| Optimas Solutions, Circle Bolt and Nut Inc. IN | Manufacturing | 0 | — | A |
| Optimas/Circle Bolt & Nut PA | Transportation & Warehousing | 0 | — | A |
| Optimax Management LLC TX | Professional & Technical Services | 1 | $78,000 | — |
| Optimax Systems Inc. NY | Manufacturing | 0 | — | F |
| OPTIME-TECH LLC IL | Professional & Technical Services | 4 | $99,523 | — |
| Optimer Pharmaceuticals Inc CA | — | 0 | — | — |
| Optimer Pharmaceuticals, Inc. NJ | — | 0 | — | — |
| OptiMIM LLC OR | Manufacturing | 0 | — | F |
| Optimist Boys' Home and Ranch, Inc. CA | Healthcare & Social Assistance | 0 | — | C |
| Optimist Youth Homes & Family Services CA | Healthcare & Social Assistance | 0 | — | F |
| Optimist Youth Homes & Family Services DBA Pacific Lodge Youth Services CA | Healthcare & Social Assistance | 0 | — | F |
| Optimize Electric Inc SD | Construction | 0 | — | A |
| Optimize Mind Performance Inc. MA | Arts & Entertainment | 1 | $128,544 | — |
| Optimized IT OH | Wholesale Trade | 0 | — | A |
| Optimized Process Designs, LLC LA | Construction | 0 | — | A |
| Optimized Process Designs, LLC ND | Construction | 0 | — | C |
| Optimized Process Designs, LLC. TX | Manufacturing | 0 | — | B |
| Optimizely North America Inc. NH | Information & Media | 3 | $158,427 | — |
| Optimum Building Systems, LLC NH | Construction | 0 | — | B |
| Optimum Dealer Group, LLC FL | Retail Trade | 0 | — | C |
| Optimum Dealer Group, LLC LA | Retail Trade | 0 | — | A |
| Optimum Dealer Group, LLC SC | Retail Trade | 0 | — | C |
| Optimum Delivery Service LLC MN | Transportation & Warehousing | 0 | — | F |
| Optimum Energy Co, LLC WA | Professional & Technical Services | 0 | — | A |
| Optimum Engineering Solutions Inc IL | Professional & Technical Services | 1 | $76,000 | — |
| Optimum Inc ME | Construction | 0 | — | A |
