| Singular Analysts Inc TX | Professional & Technical Services | 15 | $90,463 | — |
| Singular Genomics Systems, Inc. CA | Professional & Technical Services | 1 | $108,701 | — |
| SINGULAR PEOPLE, LLC FL | Professional & Technical Services | 2 | $119,000 | — |
| Singular People, LLC (f/k/a MediaNet Software LLC) PA | Professional & Technical Services | 1 | $119,475 | — |
| Singularity Construction Inc CA | Construction | 1 | $87,880 | — |
| Singularity Education Group CA | — | 0 | — | — |
| Singularity Education Group/Singularity University CA | — | 0 | — | — |
| Singularity Future Technology Ltd. NY | Transportation & Warehousing | 1 | $103,709 | — |
| Singularity Systems Inc NJ | Professional & Technical Services | 1 | $155,000 | — |
| Singulex, Inc. CA | — | 0 | — | — |
| Sinica Education Inc. CA | Educational Services | 1 | $75,000 | — |
| SINICON PLASTICS INC MA | Manufacturing | 0 | — | A |
| Sink Tower Erection Co., Inc. NC | Construction | 0 | — | F |
| Sinkro Corporation OH | Manufacturing | 0 | — | F |
| Sinn Farms OR | Agriculture & Forestry | 0 | — | D |
| Sinncet LLC AR | Construction | 0 | — | A |
| Sinnissippi Centers, Inc. IL | Healthcare & Social Assistance | 0 | — | A |
| Sino Biological US Inc PA | Manufacturing | 2 | $76,323 | — |
| SINO Television, Inc. CA | — | 0 | — | — |
| Sinode Systems, Inc IL | Manufacturing | 0 | — | A |
| Sinomax East, Inc. AZ | — | 0 | — | — |
| Sinomax East, Inc. TN | Manufacturing | 1 | $71,094 | — |
| Sinomax USA TN | Manufacturing | 0 | — | F |
| Sinovision Incorporated NY | Information & Media | 1 | $56,202 | — |
| SINTAVIA LLC FL | Manufacturing | 0 | — | F |
| Sintec US Ltd NC | Construction | 0 | — | A |
| SintecMedia NYC, Inc. NY | Information & Media | 1 | $87,000 | — |
| Sintegra, Inc. CA | Professional & Technical Services | 9 | $191,667 | — |
| Sintel Inc MI | Manufacturing | 0 | — | F |
| SinterFire, Inc PA | Manufacturing | 0 | — | A |
| Sintergy PA | Manufacturing | 0 | — | A |
| SinterMet, LLC OH | Manufacturing | 0 | — | A |
| SinterMet, LLC PA | Manufacturing | 0 | — | C |
| SINTEX MINERALS & SERVICES iNC TX | Wholesale Trade | 0 | — | D |
| Sinto America, Inc. MI | Manufacturing | 1 | $91,052 | — |
| Sinton Dairy Foods Company CO | — | 0 | — | — |
| Sinton Dairy Foods Company/ Borden CO | — | 0 | — | — |
| Sinton Dairy Foods Company/ Borden-Rev to 3/16/15 CO | — | 0 | — | — |
| SIO CAPITAL MANAGEMENT LLC NY | Finance & Insurance | 1 | $150,000 | — |
| SiO2 Medical Products, Inc. AL | Manufacturing | 1 | $123,685 | — |
| Sion Power AZ | Manufacturing | 0 | — | D |
| SiOnyx, LLC MA | Manufacturing | 0 | — | A |
| Sioux Center Health IA | Healthcare & Social Assistance | 0 | — | F |
| Sioux Chief Manufacturing MO | Manufacturing | 0 | — | F |
| Sioux City Compressed Steel IA | Wholesale Trade | 0 | — | F |
| Sioux City Engineering Company IA | Construction | 0 | — | F |
| Sioux City Foundry Co IA | Manufacturing | 0 | — | F |
| Sioux City Foundry Co NE | Manufacturing | 0 | — | F |
| Sioux City Truck Sales, Inc. IA | Wholesale Trade | 0 | — | D |
| Sioux City Truck Sales, Inc. NE | Retail Trade | 0 | — | B |
