| Solid Platforms, Inc. IN | Construction | 0 | — | A |
| Solid Property Services Inc CA | Administrative & Waste Services | 0 | — | F |
| Solid Rock Construction and Fine Carpentry Inc CA | Construction | 0 | — | F |
| Solid Rock Foundation & Flatwork LLC MO | Construction | 0 | — | A |
| Solid Rock Inc VA | Construction | 0 | — | A |
| Solid Rock Structural Solutions Inc. CA | Professional & Technical Services | 0 | — | A |
| Solid State Advanced Controls (SSAC) NY | — | 0 | — | — |
| Solid State Networks I, LLC AZ | Professional & Technical Services | 1 | $92,784 | — |
| Solid Steel Manufacturing LLC MI | Manufacturing | 0 | — | F |
| Solid Surface Craftsman, Inc. NY | Manufacturing | 0 | — | F |
| SOLID SURFACE TOPS OF SOUTHWEST FLORIDA INC FL | Manufacturing | 0 | — | F |
| Solid Waste Disposal Authority of Baldwin County Alabama, Inc. AL | Administrative & Waste Services | 0 | — | F |
| Solid Waste of Willits Inc. CA | Administrative & Waste Services | 0 | — | F |
| Solid Waste Services of WV, Inc. WV | Administrative & Waste Services | 0 | — | F |
| Solid Waste Services, Inc. d/b/a J. P. Mascaro & Sons PA | Administrative & Waste Services | 0 | — | F |
| Solid Waste Systems, Inc. CA | Administrative & Waste Services | 0 | — | A |
| Solid Waste Systems, Inc. WA | Manufacturing | 0 | — | F |
| Solid Wastes of Willits, Inc. CA | Administrative & Waste Services | 0 | — | F |
| Solidaridad North America CA | Other Services | 1 | $102,743 | — |
| Solideal On-Site Service GA | Retail Trade | 0 | — | D |
| Solideal On-Site Service IL | Retail Trade | 0 | — | A |
| Solideal On-Site Service NC | Retail Trade | 0 | — | A |
| Solideal USA TN | — | 0 | — | — |
| Solidec Inc. TX | Manufacturing | 1 | $117,500 | — |
| SolidEnergy Systems, LLC MA | Manufacturing | 2 | $975,000 | — |
| Solidia Technologies inc. NJ | Professional & Technical Services | 0 | — | A |
| Solidia Technologies inc. TX | Professional & Technical Services | 0 | — | F |
| Solidic Labs Inc TX | Information & Media | 1 | $240,000 | — |
| Solidrock Solutions LLC TX | Professional & Technical Services | 1 | $84,094 | — |
| Solidus Industries, Inc. (PB Industries) NY | — | 0 | — | — |
| Solidus Labs Incorporated NY | Professional & Technical Services | 1 | $2,029,500 | — |
| Solidwood Cresson TX | Manufacturing | 0 | — | A |
| Solidwood Forest Ltd TX | Manufacturing | 0 | — | D |
| Soligent Distribution LLC CA | Wholesale Trade | 0 | — | F |
| Solimano Framing Group NV | Construction | 0 | — | F |
| Solina USA WI | — | 0 | — | — |
| SOLINE SERVICE LLC FL | Administrative & Waste Services | 1 | $60,000 | — |
| Solinsky Eyecare, LLC CT | Healthcare & Social Assistance | 0 | — | A |
| Solis Lighting and Electrical Services, Inc. CA | Construction | 0 | — | F |
| Solis Service, LLC AZ | Transportation & Warehousing | 1 | $72,384 | — |
| Solis Services LLC AZ | Transportation & Warehousing | 1 | $65,998 | — |
| Solitaire OK | — | 0 | — | — |
| SOLITRADE GROUP, LLC NC | Wholesale Trade | 1 | $97,000 | — |
| Solitude Mountain Ski Resort UT | Arts & Entertainment | 0 | — | F |
| Solix NJ | — | 0 | — | — |
| SOLIX TECHNOLOGIES INCORPORATED CA | Professional & Technical Services | 2 | $103,600 | — |
| SOLIZE USA CORPORATION MI | Professional & Technical Services | 15 | $97,413 | — |
| Solla Eyelet Products, INC CT | Manufacturing | 0 | — | A |
| Sollers Construction, LLC AZ | Construction | 0 | — | A |
| SOLLiD Cabinetry AZ | Manufacturing | 0 | — | F |
