| Foster Poultry Farms WA | Manufacturing | 0 | — | F |
| Foster Printing CA | Manufacturing | 0 | — | A |
| Foster Senior Living IA | Healthcare & Social Assistance | 0 | — | A |
| Foster Senior Living NE | Healthcare & Social Assistance | 0 | — | F |
| FOSTER SQUARE CA | Healthcare & Social Assistance | 0 | — | F |
| Foster Supply Inc. WV | Retail Trade | 0 | — | A |
| Foster's Drywall Contracting, LLC WA | Construction | 0 | — | F |
| Fosterburg Fire Protection District IL | Public Administration | 0 | — | F |
| FosterCare NAZ AZ | — | 0 | — | — |
| FOT Investments LLC PR | Accommodation & Food Services | 0 | — | F |
| FOT Logistics LLC NY | Transportation & Warehousing | 0 | — | C |
| Foth Infrastructure & Environment LLC WI | Professional & Technical Services | 2 | $87,500 | — |
| Foti Contracting LLC OH | Construction | 0 | — | A |
| Fotile America LLC NJ | Wholesale Trade | 3 | $81,018 | — |
| Foto-Kem Industries Inc. CA | — | 0 | — | — |
| Foto-Kem Industries, Inc. Satellite Office #2 CA | — | 0 | — | — |
| Foto-Kem Industries, Inc. Satellite office #5 CA | — | 0 | — | — |
| Fotofab IL | Manufacturing | 0 | — | F |
| Fotona LLC TX | Manufacturing | 0 | — | A |
| Foudations Health Solutions OH | Healthcare & Social Assistance | 0 | — | F |
| Fougera Pharmaceuticals NY | Manufacturing | 0 | — | F |
| Fougera Pharmaceuticals Melville Site NY | Manufacturing | 0 | — | A |
| Fought and Company, Inc OR | Manufacturing | 0 | — | F |
| Foulger Pratt MD | Construction | 0 | — | D |
| Foulger-Pratt Contracting, LLC MD | Construction | 0 | — | A |
| Foulk Decorating Co PA | Construction | 0 | — | A |
| Foulkeways at Gwynedd PA | Healthcare & Social Assistance | 0 | — | F |
| Foumberg, Juneja, Rocher & Co., P.C. CA | Professional & Technical Services | 1 | $114,999 | — |
| Founda Health North America Corp. CA | Professional & Technical Services | 1 | $144,246 | — |
| FoundArt Academy, Inc FL | Healthcare & Social Assistance | 0 | — | A |
| Foundation Building Materials AL | Retail Trade | 0 | — | F |
| Foundation Building Materials AZ | Retail Trade | 0 | — | F |
| Foundation Building Materials CO | Retail Trade | 0 | — | B |
| Foundation Building Materials CT | Retail Trade | 0 | — | A |
| Foundation Building Materials FL | Retail Trade | 0 | — | D |
| Foundation Building Materials GA | Retail Trade | 0 | — | B |
| Foundation Building Materials HI | Retail Trade | 0 | — | C |
| Foundation Building Materials IA | Retail Trade | 0 | — | A |
| Foundation Building Materials IL | Retail Trade | 0 | — | F |
| Foundation Building Materials IN | Retail Trade | 0 | — | D |
| Foundation Building Materials KS | Retail Trade | 0 | — | D |
| Foundation Building Materials KY | Retail Trade | 0 | — | B |
| Foundation Building Materials MA | Retail Trade | 0 | — | A |
| Foundation Building Materials MD | Retail Trade | 0 | — | C |
| Foundation Building Materials MI | Retail Trade | 0 | — | B |
| Foundation Building Materials MN | Retail Trade | 0 | — | D |
| Foundation Building Materials MO | Retail Trade | 0 | — | D |
| Foundation Building Materials NC | Retail Trade | 0 | — | D |
| Foundation Building Materials NE | Retail Trade | 0 | — | F |
| Foundation Building Materials NJ | Retail Trade | 0 | — | D |
