| Carbo Forge, Inc. OH | Manufacturing | 0 | — | D |
| Carboline NV | Manufacturing | 0 | — | F |
| CARBOLINE CO LA | Manufacturing | 0 | — | A |
| Carboline Global Inc NV | Manufacturing | 0 | — | F |
| Carboline Global Inc VA | Manufacturing | 0 | — | F |
| Carboline Global Inc. LA | Transportation & Warehousing | 0 | — | A |
| Carboline Global Inc. WI | Manufacturing | 0 | — | A |
| Carbon Activated Corporation CA | Manufacturing | 0 | — | F |
| Carbon Activated Corporation NY | Manufacturing | 0 | — | F |
| Carbon America CO | Professional & Technical Services | 0 | — | A |
| Carbon Autonomous Robotic Systems Inc. WA | Manufacturing | 3 | $167,259 | — |
| Carbon Block Technology, Inc. NV | Manufacturing | 0 | — | F |
| Carbon Carbon Advanced Technologies TX | Manufacturing | 0 | — | A |
| Carbon Composites Inc MA | Manufacturing | 0 | — | A |
| Carbon Conversions, Inc. SC | Manufacturing | 0 | — | F |
| Carbon County School District No 2 WY | Educational Services | 2 | $53,760 | — |
| Carbon Direct, Inc. NY | Professional & Technical Services | 1 | $243,672 | — |
| Carbon Felt, Inc. NH | Manufacturing | 0 | — | D |
| Carbon Friendly US LLC CA | Professional & Technical Services | 1 | $80,000 | — |
| Carbon Green BioEnergy, LLC MI | Manufacturing | 0 | — | A |
| Carbon Health CA | — | 0 | — | — |
| Carbon Health Medical Group CA | — | 0 | — | — |
| Carbon Medical Technologies MN | Manufacturing | 0 | — | F |
| Carbon Polymers Co. OH | Manufacturing | 0 | — | D |
| Carbon Power & Light, Inc. WY | Utilities | 0 | — | A |
| Carbon Reduction Capital, LLC NY | Finance & Insurance | 1 | $85,301 | — |
| Carbon SeaQuest, Inc. IL | Professional & Technical Services | 1 | $87,547 | — |
| Carbon Valley CO | Construction | 0 | — | F |
| Carbon, Inc. CA | Manufacturing | 4 | $174,750 | D |
| Carbondale Nursing and Rehabilitation Center PA | Healthcare & Social Assistance | 0 | — | F |
| Carbone Collision Center L765 NY | Other Services | 0 | — | A |
| Carbone Subaru of Troy NY | Retail Trade | 0 | — | C |
| Carbone Technology Inc GA | Other Services | 0 | — | C |
| Carbone's Pizza Inc MN | — | 0 | — | — |
| Carbonella and Desarbo CT | Wholesale Trade | 0 | — | F |
| CarbonFree Chemicals TX | Manufacturing | 0 | — | F |
| Carbonless On Demand OH | Manufacturing | 0 | — | A |
| CarbonSix Construction MI | Construction | 0 | — | A |
| Carbonsoft Inc. VA | Professional & Technical Services | 6 | $111,833 | — |
| Carbonxt, Inc. MN | Manufacturing | 0 | — | A |
| Carborundum Grinding Wheel Company OH | Manufacturing | 0 | — | F |
| Carbro Constructors Corp NJ | Construction | 0 | — | A |
| CARC, INC NM | Healthcare & Social Assistance | 0 | — | F |
| Carcel & G Construction, LLC AL | Construction | 0 | — | F |
| Carciofini Company MN | Construction | 0 | — | C |
| CarcleSpey WA | Management of Companies | 0 | — | A |
| Carclo Technical Plastics AZ | Manufacturing | 0 | — | F |
| Carclo Technical Plastics NH | Manufacturing | 0 | — | A |
| Carclo Technical Plastics PA | Manufacturing | 0 | — | D |
| Carco Group, Inc. NY | Administrative & Waste Services | 1 | $120,000 | — |
