| Porter Health Services, LLC IN | Healthcare & Social Assistance | 0 | — | F |
| Porter Logistics LTD. OH | Transportation & Warehousing | 0 | — | A |
| Porter Physician Services, LLC IN | Healthcare & Social Assistance | 1 | $250,000 | B |
| Porter Pipe & Supply CO IL | Wholesale Trade | 0 | — | F |
| Porter Pipe & Supply CO IN | Wholesale Trade | 0 | — | D |
| Porter Pipe & Supply CO WI | Wholesale Trade | 0 | — | A |
| Porter Precision Products OH | Manufacturing | 0 | — | A |
| Porter Steel, Inc. GA | Construction | 0 | — | F |
| Porter Suites LLC VA | Accommodation & Food Services | 0 | — | F |
| Porter Tire Center Inc KY | Wholesale Trade | 0 | — | F |
| Porter Veterinary Services, P.C. CT | Professional & Technical Services | 1 | $233,334 | — |
| Porter W. Yett OR | Construction | 0 | — | D |
| Porter W. Yett Company WA | Construction | 0 | — | F |
| Porter's Cleaners LA | Other Services | 0 | — | A |
| Porter's Group NC | — | 0 | — | — |
| Porter's Tire Store TN | Retail Trade | 0 | — | C |
| Porter-Leath TN | Healthcare & Social Assistance | 0 | — | D |
| Porter-Starke Services, Inc. IN | Healthcare & Social Assistance | 0 | — | C |
| Portercare Adventist Health System CO | Healthcare & Social Assistance | 4 | $165,183 | — |
| PorterJets LLC FL | Transportation & Warehousing | 2 | $72,000 | — |
| PorterMatt Electric Inc CA | Educational Services | 0 | — | F |
| PORTERVILLE CITRUS, INC CA | Agriculture & Forestry | 0 | — | D |
| PORTERVILLE ELECTRIC CO., INC. CA | Construction | 0 | — | A |
| Porterville Grocery Outlet CA | Retail Trade | 0 | — | A |
| PORTERVILLE SHELTERED WORKSHOP, INC. dba PSW CA | Healthcare & Social Assistance | 0 | — | F |
| Portfab LLC NY | Manufacturing | 0 | — | A |
| Portfoli Hotels & Resorts- Harvest Inn CA | — | 0 | — | — |
| Portfolio Advisors LLC CT | Finance & Insurance | 1 | $165,000 | — |
| Portfolio Hotels & Resorts- Doubletree Hilton Lax CA | — | 0 | — | — |
| Portfolio Recovery Associates LLC AL | — | 0 | — | — |
| Portfolio Recovery Associates, LLC (PRA Group Inc.) VA | — | 0 | — | — |
| Portillo's Hot Dogs, LLC IL | Wholesale Trade | 0 | — | F |
| Portland Adventist Medical Center OR | Healthcare & Social Assistance | 1 | $113,986 | — |
| Portland Airstream Adventures OR | Manufacturing | 0 | — | A |
| Portland Art Museum OR | — | 0 | — | — |
| Portland Bulk Terminals T5 OR | Transportation & Warehousing | 0 | — | D |
| Portland Care and Rehabilitation Centre CT | Healthcare & Social Assistance | 0 | — | F |
| Portland Casting Plant - Fort Recovery Industries IN | Manufacturing | 0 | — | B |
| Portland Center for Dentistry, LLC ME | Healthcare & Social Assistance | 1 | $338,000 | — |
| Portland Electrical Construction, Inc. OR | Construction | 0 | — | F |
| Portland Food Co-op ME | Retail Trade | 0 | — | F |
| Portland General Electric Company OR | Utilities | 10 | $140,205 | F |
| Portland Harbor Hotel Associates ME | Accommodation & Food Services | 0 | — | F |
| Portland Hospital Service Corp OR | Other Services | 0 | — | F |
| Portland Housing Authority ME | Real Estate | 0 | — | F |
| PORTLAND IMPLEMENT INC WI | Other Services | 0 | — | A |
| Portland International Airport OR | — | 0 | — | — |
| Portland Kettle Works, LLC OR | Manufacturing | 0 | — | A |
| Portland Nursery OR | Retail Trade | 0 | — | A |
| Portland of Cascadia, LLC OR | Healthcare & Social Assistance | 0 | — | F |
