| Howell Laboratories INC ME | Manufacturing | 0 | — | F |
| Howell Paving, Inc. IL | Construction | 0 | — | D |
| Howell Petroleum Products, Inc NY | Construction | 1 | $106,330 | — |
| HOWELL PLYWOOD CORPORATION AL | Manufacturing | 0 | — | F |
| Howell Rescue Systems OH | Wholesale Trade | 0 | — | A |
| Howell's Motor Freight, Inc. GA | Transportation & Warehousing | 0 | — | A |
| Howell's Motor Freight, Inc. NC | Transportation & Warehousing | 0 | — | C |
| Howell's Motor Freight, Inc. VA | Transportation & Warehousing | 0 | — | B |
| Howie's Enterprises KS | Administrative & Waste Services | 0 | — | F |
| Howk Systems CA | Construction | 0 | — | A |
| Howland Machine Corp OH | Manufacturing | 0 | — | A |
| Howlett Logistics OH | Transportation & Warehousing | 0 | — | A |
| Howlett Restaurant Group OH | Accommodation & Food Services | 0 | — | A |
| Howling Dog Management TX | Construction | 0 | — | C |
| Howling Logistics, LLC MI | Transportation & Warehousing | 0 | — | A |
| Howmet TX | Manufacturing | 0 | — | C |
| Howmet Aerospace AZ | Manufacturing | 0 | — | A |
| Howmet Aerospace CA | Wholesale Trade | 0 | — | A |
| Howmet Aerospace GA | Manufacturing | 0 | — | A |
| Howmet Aerospace MI | — | 0 | — | — |
| Howmet Aerospace MN | Manufacturing | 0 | — | A |
| Howmet Aerospace MO | Manufacturing | 0 | — | C |
| Howmet Aerospace OH | Manufacturing | 0 | — | B |
| Howmet Aerospace TX | Manufacturing | 0 | — | B |
| Howmet Aerospace VA | Manufacturing | 0 | — | A |
| Howmet Aerospace - Niles Operations OH | Manufacturing | 0 | — | C |
| Howmet Aerospace Inc. PA | Manufacturing | 1 | $114,650 | — |
| Howmet Aerospace La Porte IN | — | 0 | — | — |
| Howmet Aerospace Whitehall Operations MI | Manufacturing | 0 | — | A |
| Howmet Aluminum Castings Inc. TX | Manufacturing | 0 | — | A |
| Howmet Castings & Services, Inc. NJ | Manufacturing | 0 | — | A |
| Howmet Castings and Services, Inc CT | Manufacturing | 0 | — | A |
| Howmet Castings and Services, Inc. IN | Manufacturing | 0 | — | A |
| Howmet Castings and Services, Inc. TN | Manufacturing | 0 | — | A |
| Howmet Castings and Services, Inc. TX | Manufacturing | 0 | — | A |
| Howmet Castings and Services, Inc. VA | Manufacturing | 0 | — | A |
| Howmet Castings Inc NY | Manufacturing | 0 | — | A |
| Howmet Corporation MI | Management of Companies | 0 | — | A |
| Howmet Fastening Systems CA | Manufacturing | 0 | — | A |
| Howmet Global Fastening Systems Inc CA | Manufacturing | 0 | — | A |
| Howmet Logistics Services, Inc. IN | Transportation & Warehousing | 0 | — | A |
| Howrey CA | — | 0 | — | — |
| Howrey LLP TX | — | 0 | — | — |
| Hoxie Feedyard KS | Agriculture & Forestry | 0 | — | C |
| Hoxie Landscape Services Inc MA | Administrative & Waste Services | 0 | — | F |
| Hoxton DTLA CA | Accommodation & Food Services | 0 | — | A |
| Hoxton Portland LLC OR | Accommodation & Food Services | 0 | — | A |
| Hoya MN | Manufacturing | 0 | — | F |
| HOYA INSURANCE AGENCY INC CA | Finance & Insurance | 1 | $42,952 | — |
| Hoya Optical 2021 MN | — | 0 | — | — |
