| Protect Environmental UT | Construction | 0 | — | A |
| Protect Plus Air Inc. SC | Manufacturing | 0 | — | F |
| Protect Plus Industries LC TX | Manufacturing | 0 | — | D |
| Protect Plus Industries, LC IN | Manufacturing | 0 | — | D |
| PROtect, LLC KS | Professional & Technical Services | 0 | — | F |
| Protect-A-Cote INC OH | Construction | 0 | — | A |
| Protect-all, Inc WI | Manufacturing | 0 | — | F |
| Protected Cargo Transport LLC LA | Transportation & Warehousing | 0 | — | A |
| Protection Controls, Inc. IL | Manufacturing | 0 | — | F |
| Protection Valley Manor KS | Healthcare & Social Assistance | 0 | — | A |
| Protective Coating Specialists, Inc. WI | Construction | 0 | — | A |
| Protective Coatings IN | Manufacturing | 0 | — | A |
| Protective Force International NV | Administrative & Waste Services | 0 | — | F |
| Protective Industial Products dba Uniform Technology TX | Manufacturing | 0 | — | A |
| Protective Industrial Product NC | Manufacturing | 0 | — | C |
| Protective Industrial Products MS | Transportation & Warehousing | 0 | — | A |
| Protective Industrial Products NC | Manufacturing | 0 | — | D |
| Protective Industrial Products NV | Retail Trade | 0 | — | A |
| Protective Industrial Products NY | Manufacturing | 0 | — | A |
| Protective Industries Inc. NY | Manufacturing | 0 | — | F |
| Protective Life Insurance Company AL | Finance & Insurance | 2 | $121,558 | — |
| Protective Packaging Solutions OH | Manufacturing | 0 | — | A |
| Protecto Wrap Company CO | Manufacturing | 0 | — | F |
| Protege Staffing, Inc. NC | Administrative & Waste Services | 0 | — | F |
| Protego (USA), Inc. SC | Manufacturing | 0 | — | F |
| Protein for Pets Opco, LLC MO | Manufacturing | 3 | $115,000 | — |
| Protein for Pets, Opco LLC CO | Manufacturing | 0 | — | C |
| Protein for Pets, Opco LLC MO | Manufacturing | 0 | — | B |
| Protein Plus GA | Manufacturing | 0 | — | F |
| Protein Products, Inc. MS | Manufacturing | 0 | — | F |
| Protein Research CA | Manufacturing | 0 | — | F |
| Protein Sciences a Sanofi Company CT | Manufacturing | 0 | — | A |
| Protein Sciences a Sanofi Company NY | Manufacturing | 0 | — | A |
| Protein Sciences Corporation CT | Manufacturing | 0 | — | A |
| Protein Sciences Corporation NY | Manufacturing | 0 | — | A |
| Protein Sciences Corporation PA | Manufacturing | 1 | $97,115 | — |
| ProteinSimple CA | Manufacturing | 2 | $114,147 | C |
| Protek Management LLC MI | Professional & Technical Services | 1 | $75,462 | — |
| Protek Medical Products IA | — | 0 | — | — |
| ProTek Recycling NY | Other Services | 0 | — | F |
| Protemp Associates Inc OR | Construction | 0 | — | A |
| Protempis CA | Manufacturing | 0 | — | A |
| Proteor USA LLC AZ | Manufacturing | 1 | $87,500 | — |
| Proterial America, Ltd. NY | Manufacturing | 1 | $300,000 | — |
| Proterial Cable America IN | Manufacturing | 0 | — | C |
| Proterial Cable America, Inc. CT | Manufacturing | 0 | — | F |
| Proterial Cable America, Inc. RI | Manufacturing | 0 | — | C |
| Proterial LTD. NH | Manufacturing | 0 | — | D |
| Proterial USA OH | Wholesale Trade | 0 | — | B |
| Proterra SC | Manufacturing | 0 | — | D |
