| Schweitzer Engineering Laboratories, Inc OR | Manufacturing | 0 | — | A |
| Schweitzer Engineering Laboratories, Inc TX | Manufacturing | 0 | — | A |
| Schweitzer Engineering Laboratories, Inc. FL | Manufacturing | 0 | — | A |
| Schweitzer Engineering Laboratories, Inc. IN | Manufacturing | 0 | — | A |
| Schweitzer Engineering Laboratories, Inc. WA | Professional & Technical Services | 18 | $125,964 | F |
| Schweitzer Mountain Resort ID | Accommodation & Food Services | 0 | — | F |
| Schweitzer-Mauduit International, Inc. NJ | — | 0 | — | — |
| Schweitzer-Mauduit International, Inc. NY | Manufacturing | 0 | — | D |
| Schweizer Aircraft Corp. (d/b/a Sikorsky Military Completions Center) NY | — | 0 | — | — |
| Schwertner Farms Inc. TX | Agriculture & Forestry | 0 | — | F |
| Schweser's NE | — | 0 | — | — |
| Schwickert's Tecta America MN | Construction | 0 | — | F |
| Schwieters Chevrolet of Cold Spring MN | Retail Trade | 0 | — | D |
| Schwing America, Inc. MN | Manufacturing | 0 | — | F |
| Schwing Bioset MN | Wholesale Trade | 0 | — | F |
| Schwing Bioset Inc WI | Utilities | 0 | — | F |
| Schwing Electrical Supply Corp. (6 Long Island sites) NY | — | 0 | — | — |
| Schwob Building Company, LLC TX | Construction | 0 | — | A |
| Schwob Energy Service TX | Construction | 0 | — | A |
| Schwob Steel Services, LLC TX | Construction | 0 | — | A |
| Schwoeppe Machine and Tool MO | Manufacturing | 0 | — | C |
| SCI Acquisitions LLC DBA Surface Center KS | Manufacturing | 0 | — | F |
| SCI Box, LLC IL | Manufacturing | 0 | — | F |
| SCI Columbia LLC MO | Accommodation & Food Services | 0 | — | A |
| SCI Construction Field Services TX | Construction | 0 | — | F |
| SCI Construction Ltd TX | Construction | 0 | — | A |
| SCI Des Moines, LLC IA | Accommodation & Food Services | 0 | — | A |
| SCI East Peoria, LLC IL | Accommodation & Food Services | 0 | — | A |
| SCI engineered materials OH | Manufacturing | 0 | — | A |
| SCI Engineering Inc. MO | Professional & Technical Services | 1 | $80,500 | — |
| SCI Field Services Inc TX | Construction | 0 | — | A |
| SCI Financial Services, Inc. TX | Other Services | 1 | $77,376 | — |
| SCI Galena, LLC IL | Accommodation & Food Services | 0 | — | A |
| SCI LaCrosse/Onalaska, LLC WI | Accommodation & Food Services | 0 | — | A |
| SCI Moline, LLC IL | Accommodation & Food Services | 0 | — | A |
| SCI Packaging IL | Manufacturing | 0 | — | A |
| SCI Quincy, LLC IL | Accommodation & Food Services | 0 | — | A |
| SCI Shared Resources, LLC TX | Other Services | 4 | $94,477 | — |
| SCI Sioux City LLC IA | Accommodation & Food Services | 0 | — | A |
| SCI Spikes, LLC dba/Birmingham Rail & Locomotive - Bessemer Switch Operations AL | Wholesale Trade | 0 | — | A |
| SCI Spikes, LLC dba/Birmingham Rail & Locomotive - Houston Rail Operations TX | Wholesale Trade | 0 | — | A |
| SCI St Joseph, LLC MO | Accommodation & Food Services | 0 | — | A |
| Sci-Tek Consultants, Inc. PA | Professional & Technical Services | 1 | $90,480 | — |
| Sciaba Construction Corporation MA | Construction | 1 | $104,000 | — |
| Sciame Construction, LLC NY | Construction | 2 | $151,500 | — |
| SciCast International Inc. PA | Manufacturing | 0 | — | A |
| Scicom Infrastructure Services, Inc. GA | Professional & Technical Services | 2 | $128,441 | — |
| Scicon Technologies Corporation CA | Manufacturing | 0 | — | A |
| SCIEGEN PHARMACEUTICALS, INC. NY | Manufacturing | 4 | $90,875 | F |
| Sciemo Inc. NY | Professional & Technical Services | 1 | $150,000 | — |
