| Ferraro Foods NC | Wholesale Trade | 0 | — | F |
| Ferraro Pile & Shoring Inc NY | Construction | 0 | — | F |
| Ferreira Construction Co. Inc NJ | Construction | 0 | — | C |
| Ferreira Power South, LLC FL | Construction | 0 | — | A |
| Ferrell Hospital IL | Healthcare & Social Assistance | 0 | — | C |
| Ferrell Hospital Community Foundation IL | Healthcare & Social Assistance | 1 | $261,000 | — |
| Ferrer Mechanical Services, Inc IN | Construction | 0 | — | F |
| Ferrero IL | Manufacturing | 0 | — | D |
| Ferrero, LLC. GA | Manufacturing | 0 | — | A |
| FERRETERIA SOLAR EL ALMACIGO, INC. PR | Retail Trade | 0 | — | A |
| Ferreus Industries UT | Manufacturing | 0 | — | A |
| Ferring NJ | Wholesale Trade | 0 | — | A |
| Ferring Pharmaceuticals, Inc. NJ | Professional & Technical Services | 2 | $209,935 | — |
| Ferring Research Institute, Inc. CA | — | 0 | — | — |
| Ferriot Inc. OH | Manufacturing | 0 | — | F |
| Ferris Coffee & Nut Co. MI | Construction | 0 | — | F |
| Ferris Mfg. Corp. TX | Manufacturing | 0 | — | A |
| Ferris State University MI | Educational Services | 6 | $76,833 | — |
| Ferro Corporation CA | — | 0 | — | — |
| Ferro Corporation OH | — | 0 | — | — |
| Ferro Corporation PA | — | 0 | — | — |
| Ferro Magnetics Corporation MO | Manufacturing | 0 | — | F |
| Ferrocrete Builders Inc. CA | Construction | 0 | — | A |
| Ferroglobe USA Metallurgical Inc AL | — | 0 | — | — |
| Ferroglobe-Tennessee Alloy Metals AL | Manufacturing | 0 | — | F |
| Ferrolux Metals Co. MI | Manufacturing | 0 | — | F |
| Ferrosource LLC NY | Wholesale Trade | 1 | $150,000 | — |
| Ferrotec (USA) Corporation CA | Manufacturing | 1 | $114,113 | — |
| Ferrotec Corporation USA CA | Manufacturing | 0 | — | C |
| Ferrotec Corporation USA NH | Manufacturing | 0 | — | A |
| Ferrotherm Corporation OH | Manufacturing | 0 | — | A |
| Ferrous Engineering and Tools SC | Manufacturing | 0 | — | F |
| Ferrous Metal Processing OH | Manufacturing | 0 | — | F |
| Ferrous Metal Transfer OH | Transportation & Warehousing | 0 | — | C |
| Ferrous Metal Transfer MS MS | Transportation & Warehousing | 0 | — | A |
| Ferrous Metal Transfer TX TX | Transportation & Warehousing | 0 | — | D |
| Ferrous processing FL | Wholesale Trade | 0 | — | A |
| Ferrous processing LA | Wholesale Trade | 0 | — | F |
| Ferrous processing MI | Wholesale Trade | 0 | — | B |
| Ferrous processing OH | Wholesale Trade | 0 | — | B |
| Ferrous processing TN | Wholesale Trade | 0 | — | A |
| Ferrous Processing Trading Co MI | Wholesale Trade | 0 | — | F |
| Ferrous85 Co. TX | Manufacturing | 0 | — | A |
| Ferrous85" Co. TX | Manufacturing | 0 | — | A |
| FerrouSouth MS | Manufacturing | 0 | — | F |
| Ferrovial NY | Construction | 0 | — | A |
| Ferrovial Construction East, LLC GA | Construction | 1 | $80,000 | A |
| Ferrovial Construction Texas LLC (fka Ferrovial Agroman Texas LLC) TX | Construction | 0 | — | A |
| Ferrovial Construction US Corp (fka Ferrovial Agroman US Corp) TX | Construction | 0 | — | A |
| Ferrovial Construction US Corp. TX | Construction | 5 | $96,604 | — |
