| Port of Astoria OR | Transportation & Warehousing | 0 | — | A |
| Port of Bellingham WA | Transportation & Warehousing | 0 | — | A |
| PORT of Crow Wing County Inc MN | Healthcare & Social Assistance | 0 | — | F |
| Port of Friday Harbor WA | Arts & Entertainment | 0 | — | A |
| Port of Longview WA | Transportation & Warehousing | 0 | — | F |
| Port of Miami Crane Management INC FL | Transportation & Warehousing | 0 | — | D |
| Port of Miami Medical Clinic, Inc. FL | Healthcare & Social Assistance | 0 | — | A |
| Port of Miami Terminal Oerating Company, L.C. FL | Transportation & Warehousing | 0 | — | C |
| Port of Miami Terminal Operating Co., L.C. FL | Transportation & Warehousing | 0 | — | F |
| Port of Morrow Warehousing OR | Transportation & Warehousing | 0 | — | F |
| Port of Port Angeles WA | Public Administration | 0 | — | C |
| Port of San Francisco CA | Real Estate | 0 | — | F |
| Port of Seattle WA | Public Administration | 1 | $114,478 | — |
| Port of SF CA | Real Estate | 0 | — | F |
| Port of Tillamook Bay OR | Transportation & Warehousing | 0 | — | A |
| Port of Vancouver, USA WA | Transportation & Warehousing | 0 | — | A |
| Port Orange AL Care Properties, LLC FL | Healthcare & Social Assistance | 0 | — | F |
| Port Orchard Sand & Gravel Co Inc WA | Mining & Extraction | 0 | — | A |
| Port Paradise Hotel, LLC FL | Accommodation & Food Services | 0 | — | A |
| Port Parma Logistics LLC IL | Transportation & Warehousing | 0 | — | A |
| Port Property Management, Inc ME | Real Estate | 0 | — | F |
| Port Richey Automotive Management, LLC FL | Retail Trade | 0 | — | D |
| PORT ROYAL DISTRIBUTION LLC MD | Transportation & Warehousing | 0 | — | D |
| Port Royal Inc. NJ | Accommodation & Food Services | 0 | — | F |
| Port Saint Lucie Rehabilitation and Healthcare FL | Healthcare & Social Assistance | 0 | — | F |
| Port Securing and Maintenance of New Jersey NJ | Transportation & Warehousing | 0 | — | C |
| Port Security Services, Inc. CT | Administrative & Waste Services | 0 | — | A |
| Port Susan Camping Club WA | Accommodation & Food Services | 0 | — | F |
| Port Townsend Paper Corporation WA | Manufacturing | 0 | — | F |
| Port Washington UFSD NY | Educational Services | 0 | — | F |
| Port-A-Jon, Inc. TX | Administrative & Waste Services | 0 | — | A |
| Porta Door Co., Inc. CT | Manufacturing | 0 | — | F |
| Porta Management LLC NY | Finance & Insurance | 2 | $220,000 | — |
| Porta-Dock, Inc. MN | Manufacturing | 0 | — | F |
| Portable Solutions Group KY | Manufacturing | 0 | — | A |
| Portacool TX | Manufacturing | 0 | — | F |
| Portage - J. RETTENMAIER USA LP MI | Manufacturing | 0 | — | F |
| Portage Country Club OH | Arts & Entertainment | 0 | — | A |
| Portage Electric Products, Inc. OH | Manufacturing | 0 | — | A |
| Portage Hospital MI | Healthcare & Social Assistance | 0 | — | F |
| Portage Plastics Corporation FL | Manufacturing | 0 | — | A |
| Portage Plastics Corporation WI | Manufacturing | 0 | — | D |
| Portage Technologies, Inc. NY | Finance & Insurance | 1 | $125,000 | — |
| PORTAL, INC. MA | Manufacturing | 0 | — | F |
| PortaPros LLC ID | Administrative & Waste Services | 0 | — | F |
| PORTCO VA | Administrative & Waste Services | 0 | — | F |
| Portco Packaging WA | Manufacturing | 0 | — | F |
| Porter Bros., Inc. AZ | Construction | 0 | — | F |
| PORTER CORP MI | Manufacturing | 0 | — | F |
| Porter County Iron & Metal IN | Wholesale Trade | 0 | — | F |
