| Hubbard Pipe and Supply - Corporate/Fayetteville NC | Wholesale Trade | 0 | — | D |
| Hubbard Pipe and Supply - Corporate/Fayetteville SC | Wholesale Trade | 0 | — | A |
| Hubbard Tool & Die Corporation NY | Manufacturing | 0 | — | F |
| Hubbard-Hall, Inc SC | Wholesale Trade | 0 | — | A |
| Hubbard-Hall, Inc. CT | Wholesale Trade | 0 | — | F |
| Hubbard-Hall, Inc. MA | Wholesale Trade | 0 | — | A |
| Hubbardton Forge LLC VT | Manufacturing | 0 | — | F |
| Hubbartt Electric Inc WI | Construction | 0 | — | A |
| Hubbell AL | Manufacturing | 0 | — | D |
| Hubbell IA | Healthcare & Social Assistance | 0 | — | F |
| Hubbell MO | Manufacturing | 0 | — | F |
| Hubbell NC | Manufacturing | 0 | — | B |
| Hubbell OK | Manufacturing | 0 | — | A |
| Hubbell SC | — | 0 | — | — |
| Hubbell WI | Manufacturing | 0 | — | A |
| Hubbell & Hudson Management, LLC. TX | — | 0 | — | — |
| Hubbell - Armorcast CA | Manufacturing | 0 | — | F |
| Hubbell / Beckwith Electric FL | Manufacturing | 0 | — | C |
| Hubbell Automation Solutions NH | Professional & Technical Services | 0 | — | A |
| Hubbell Burndy NH | Manufacturing | 0 | — | B |
| Hubbell CMC AL | Manufacturing | 0 | — | C |
| Hubbell Gas Unit Solutions OK | Manufacturing | 0 | — | C |
| Hubbell Gas Utility Solutions, Inc. WI | — | 0 | — | — |
| Hubbell Inc CA | Transportation & Warehousing | 0 | — | A |
| Hubbell inc NH | Manufacturing | 0 | — | F |
| Hubbell Inc. IL | Wholesale Trade | 0 | — | C |
| Hubbell Incorporated PA | Manufacturing | 0 | — | C |
| Hubbell Incorporated (Delaware) CT | Manufacturing | 1 | $72,200 | — |
| Hubbell Industrial Controls NC | Manufacturing | 0 | — | A |
| Hubbell Lenoir City, Inc TN | Manufacturing | 0 | — | B |
| Hubbell Lighting GA | Transportation & Warehousing | 0 | — | B |
| Hubbell Lighting, Inc. PA | — | 0 | — | — |
| Hubbell Lighting, Inc. WI | — | 0 | — | — |
| Hubbell Lighting, Inc. (Newtown) CT | — | 0 | — | — |
| Hubbell Power Systems CA | — | 0 | — | — |
| Hubbell Power Systems SC | Manufacturing | 0 | — | F |
| HUBBELL POWER SYSTEMS INC AL | Manufacturing | 0 | — | F |
| Hubbell Power Systems, Inc. MO | Manufacturing | 2 | $121,500 | D |
| Hubbell Raco IN | Manufacturing | 0 | — | F |
| Hubbell Wiegmann IL | Manufacturing | 0 | — | F |
| Hubbell, Inc GA | Transportation & Warehousing | 0 | — | A |
| Hubbell, Inc. OH | Manufacturing | 0 | — | F |
| Hubbell/RACO IN | — | 0 | — | — |
| Hubbell/RW Lyall CA | Manufacturing | 0 | — | D |
| Hubble Homes ID | Construction | 0 | — | C |
| Hubble Technologies Inc. NY | Information & Media | 1 | $60,000 | — |
| Hubble Technology Inc. VA | Information & Media | 1 | $125,000 | — |
| Hubby Home Improvement NE | Construction | 0 | — | A |
| Hubco Inc KS | Manufacturing | 0 | — | C |
| Hubco, Inc. NY | Manufacturing | 0 | — | F |
