| PLX INC. NY | Manufacturing | 0 | — | A |
| Ply Gem PA | Manufacturing | 0 | — | A |
| Ply Gem - Cornerstone Building Brands NE | Manufacturing | 0 | — | F |
| Ply Gem Rocky Mount (MW) VA | Manufacturing | 0 | — | B |
| Ply Gem Speciality Products, LLC d/b/a Canyon Stone NC | — | 0 | — | — |
| Ply Gem/ Cornerstone Building Brands GA | Manufacturing | 0 | — | F |
| Ply-Tech Corporation KY | Manufacturing | 0 | — | F |
| Plycem NC | Manufacturing | 0 | — | A |
| Plycem USA LLA dba Allura IN | — | 0 | — | — |
| Plycem USA, INC NC | Manufacturing | 0 | — | D |
| Plycem, USA LLC dba Allura COVID19 NC | — | 0 | — | — |
| plyco corporation WI | Construction | 0 | — | A |
| Plyler Enterprises, Inc. PA | Retail Trade | 0 | — | F |
| Plyler's At Your Service Inc PA | Construction | 0 | — | A |
| Plymold Inc. MN | Manufacturing | 0 | — | F |
| Plymouth WA | Wholesale Trade | 0 | — | F |
| Plymouth 7th WA | Wholesale Trade | 0 | — | A |
| PLYMOUTH and BROCKTON ST RWY CO INC MA | Transportation & Warehousing | 0 | — | C |
| Plymouth Community School Corporation IN | Educational Services | 0 | — | C |
| Plymouth Foam OH | Manufacturing | 0 | — | A |
| Plymouth Foam WI | Manufacturing | 0 | — | F |
| PLYMOUTH FOUNDRY, INC IN | Manufacturing | 0 | — | D |
| Plymouth Harbor, Inc. FL | Healthcare & Social Assistance | 0 | — | F |
| Plymouth Industries MN | Manufacturing | 0 | — | F |
| Plymouth Industries MS | Manufacturing | 0 | — | A |
| Plymouth Industries NY | Wholesale Trade | 0 | — | D |
| Plymouth Intergenerational Coalition WI | Healthcare & Social Assistance | 0 | — | F |
| Plymouth Luther Collision, LLC MN | Other Services | 0 | — | D |
| Plymouth Poultry Co. dba Vanguard Foods WA | Manufacturing | 0 | — | A |
| Plymouth Poultry Company WA | Wholesale Trade | 0 | — | F |
| Plymouth Psych Group, LLC MN | Healthcare & Social Assistance | 2 | $52,499 | — |
| Plymouth Rock Assurance Corporation MA | Finance & Insurance | 3 | $151,713 | — |
| Plymouth Rock Home Assurance Corporation MA | Finance & Insurance | 2 | $173,028 | — |
| Plymouth Rock Management Company of New Jersey NJ | Finance & Insurance | 5 | $132,246 | — |
| Plymouth Spring Company, Inc CT | Manufacturing | 0 | — | F |
| Plymouth Square CA | Healthcare & Social Assistance | 0 | — | A |
| Plymouth Tube KY | Construction | 0 | — | F |
| Plymouth Tube MD | Manufacturing | 0 | — | F |
| Plymouth Tube WI | Manufacturing | 0 | — | F |
| Plymouth Tube Co USA WI | — | 0 | — | — |
| Plymouth Tube Company IL | Manufacturing | 0 | — | A |
| Plymouth Tube Company IN | Manufacturing | 0 | — | F |
| Plymouth Tube Company LA | Manufacturing | 0 | — | C |
| Plymouth Tube Company MS | Manufacturing | 0 | — | C |
| Plymouth Tube Company - Trent WI | Manufacturing | 0 | — | F |
| Plymouth Tube Company USA LA | — | 0 | — | — |
| Plymouth/Nicky OR | Wholesale Trade | 0 | — | A |
| Plymovent Corporation NJ | Manufacturing | 0 | — | F |
| Plywood Company of Fort Worth, Inc. TX | Retail Trade | 0 | — | A |
| PLZ Corp CA | Manufacturing | 0 | — | F |
