| Serco Mold, Inc CA | Manufacturing | 0 | — | A |
| Serco, Inc. KY | — | 0 | — | — |
| Serco, Inc. MO | — | 0 | — | — |
| Serco-NA CO | — | 0 | — | — |
| Serco-NA TX | — | 0 | — | — |
| SERCO-Upper Rio Broderplex TX | — | 0 | — | — |
| Sercomm Technology Inc. GA | Wholesale Trade | 1 | $107,453 | — |
| Seren IPS, Inc. NJ | Manufacturing | 0 | — | A |
| Serena Wholesale, Inc. GA | Wholesale Trade | 2 | $87,048 | — |
| Serendipity NE | — | 0 | — | — |
| Serendipity Center, Inc OR | Educational Services | 0 | — | F |
| Serene Manor Medical Center TN | Healthcare & Social Assistance | 0 | — | F |
| Serene Powers Real Estate LLC NY | Real Estate | 1 | $69,514 | — |
| Serenergy Corp CA | Construction | 1 | $120,000 | — |
| Serenity Assisted Living MN | Healthcare & Social Assistance | 0 | — | A |
| Serenity Broadmoor LLC FL | Healthcare & Social Assistance | 0 | — | A |
| Serenity Forge LLC CO | Information & Media | 1 | $47,029 | — |
| Serenity Home Care LLC OR | Healthcare & Social Assistance | 1 | $101,026 | — |
| Serenity Hospice OH | Healthcare & Social Assistance | 0 | — | A |
| Serenity Hospice and Home IL | Healthcare & Social Assistance | 0 | — | F |
| Serenity Hospice Care GA | Healthcare & Social Assistance | 0 | — | F |
| SERENITY INFOTECH INC. GA | Professional & Technical Services | 3 | $123,893 | — |
| Serenity Lane OR | Healthcare & Social Assistance | 0 | — | F |
| Serenity Lodge, LLC CA | Healthcare & Social Assistance | 0 | — | A |
| Serenity Place on 7th MN | Healthcare & Social Assistance | 0 | — | F |
| Serenity Psychiatric Services, LLC SC | Healthcare & Social Assistance | 1 | $405,600 | — |
| Serenity Recuperative Care CA | Healthcare & Social Assistance | 0 | — | F |
| Serenity Sleep Products, Inc. AL | Manufacturing | 0 | — | F |
| Serenity Springs LLC FL | Healthcare & Social Assistance | 0 | — | A |
| Serenity Wellness Growers NV | — | 0 | — | — |
| Serent Capital Management Company, LLC CA | Finance & Insurance | 1 | $205,000 | — |
| Serenus Johnson Construction MI | Construction | 0 | — | A |
| Seres Therapeutics, Inc AZ | Healthcare & Social Assistance | 0 | — | A |
| Seres Therapeutics, Inc CA | Healthcare & Social Assistance | 0 | — | A |
| Seres Therapeutics, Inc MA | Professional & Technical Services | 0 | — | A |
| Seres Therapeutics, Inc PA | Healthcare & Social Assistance | 0 | — | A |
| Seretta Construction NC | Construction | 0 | — | F |
| Seretta Construction, Inc. FL | Construction | 0 | — | F |
| Sergeant's Pet Care Products Inc. TN | — | 0 | — | — |
| Sergeant's Pet Care Products LLC dba PetIQ NE | Manufacturing | 0 | — | B |
| Sergenian's Floor Coverings Inc. WI | Retail Trade | 0 | — | C |
| Seright LLC ID | Retail Trade | 0 | — | A |
| Serigor Inc. MD | Professional & Technical Services | 2 | $100,500 | — |
| Serigraph Inc WI | Manufacturing | 0 | — | B |
| Serim Research Corporation IN | Manufacturing | 0 | — | A |
| Serimax North America TX | Construction | 0 | — | A |
| SERJobs TX | Healthcare & Social Assistance | 0 | — | A |
| SERMAVICA LLC GA | Administrative & Waste Services | 0 | — | F |
| SERMAX STAFFING LLC OH | Administrative & Waste Services | 2 | $68,400 | — |
| Sermon Service & Electric ID | Construction | 0 | — | F |
