| Siddons-Martin Emergency Group, LLC TX | Management of Companies | 0 | — | A |
| Side by Side CA | Healthcare & Social Assistance | 0 | — | F |
| Side Channel LLC WA | Accommodation & Food Services | 0 | — | F |
| Side Street Food Services IN | Accommodation & Food Services | 0 | — | A |
| SIDE X SIDE CONSTRUCTION, LLC WI | Construction | 0 | — | F |
| Side, Inc. CA | Real Estate | 2 | $151,736 | — |
| Sidebotham Substation Services PLLC NC | Utilities | 0 | — | A |
| Sidecat, LLC (DC) CA | Information & Media | 3 | $129,397 | — |
| Sidecca, Inc (Corporate Office/Warehouse) CA | — | 0 | — | — |
| Sidecca, Inc - Northridge Fashion Center CA | — | 0 | — | — |
| Sidecca, Inc-Brea Mall CA | — | 0 | — | — |
| Sidecca, Inc-Burbank Town Center CA | — | 0 | — | — |
| Sidecca, Inc-Los Cerritos Center CA | — | 0 | — | — |
| Sidecca, Inc-Montclair Plaza CA | — | 0 | — | — |
| Sidecca, Inc-Valencia Town Center CA | — | 0 | — | — |
| Sidecca, Inc-Westfield Santa Anita CA | — | 0 | — | — |
| Sidekick AI Inc. CA | Information & Media | 1 | $225,000 | — |
| Sidel Inc. GA | Manufacturing | 1 | $100,036 | F |
| SIDELINE POWER NE | Wholesale Trade | 0 | — | A |
| SidelineSwap, Inc. MA | Wholesale Trade | 1 | $51,709 | — |
| Sides Contracting Company Inc. NC | Administrative & Waste Services | 0 | — | A |
| Sides Erosion Control Services, Inc. NC | Administrative & Waste Services | 0 | — | A |
| Sides Seeding and Landscaping Co. Inc NC | Administrative & Waste Services | 0 | — | A |
| Sidhu & Sons Nursery USA Inc. WA | Agriculture & Forestry | 0 | — | F |
| Sidhu Petroleum Corp NJ | Wholesale Trade | 1 | $115,000 | — |
| Siding Solutions WA | Construction | 0 | — | F |
| Sidjon Corporation dba Livermore Casino CA | Arts & Entertainment | 0 | — | A |
| Sidley Austin (US) LLP IL | Professional & Technical Services | 15 | $299,351 | — |
| Sidney Care and Rehabilitation Center NE | — | 0 | — | — |
| Sidney Electric Company IN | Construction | 0 | — | A |
| Sidney Electric Company OH | Construction | 0 | — | D |
| Sidney Electric Mechanical Services, Inc. OH | Construction | 0 | — | A |
| Sidney Lee Welding Supply Inc GA | Wholesale Trade | 0 | — | F |
| Sidney Millwork Co MT | Manufacturing | 0 | — | F |
| Sidney Regional Medical Center NE | Healthcare & Social Assistance | 0 | — | F |
| Sidney Sugars MT | — | 0 | — | — |
| SIDO, INC. FL | Administrative & Waste Services | 0 | — | F |
| SIDRAM TECHNOLOGIES LLC GA | Professional & Technical Services | 2 | $90,000 | — |
| Sidus Space FL | Manufacturing | 0 | — | A |
| SIE - Bluepoint TX | Management of Companies | 0 | — | A |
| SIE Orange County Kitchen, LLC CA | — | 0 | — | — |
| Sieber Industrial Contractors, Inc. NC | Manufacturing | 0 | — | A |
| Siebert and Sons Enterprises LLC IL | Construction | 0 | — | A |
| SIEBTECHNIK TEMA Inc. OH | Manufacturing | 0 | — | A |
| Siedhoff Distributing Company MO | Transportation & Warehousing | 0 | — | C |
| Siegel Egg Company MA | Transportation & Warehousing | 0 | — | F |
| Siegel Gas FL | Retail Trade | 0 | — | A |
| Siegfried NJ | Manufacturing | 0 | — | F |
| Siegfried USA LLC NJ | Manufacturing | 0 | — | A |
| Siegfried's Basement Inc NJ | Manufacturing | 0 | — | F |
