| Sonesta International Hotel Corporation NC | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation NJ | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation NM | Accommodation & Food Services | 0 | — | A |
| Sonesta International Hotel Corporation NV | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation NY | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation OH | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation OK | Accommodation & Food Services | 0 | — | A |
| Sonesta International Hotel Corporation OR | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation PA | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation PR | Accommodation & Food Services | 0 | — | D |
| Sonesta International Hotel Corporation RI | Accommodation & Food Services | 0 | — | A |
| Sonesta International Hotel Corporation SC | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation TN | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation TX | Accommodation & Food Services | 0 | — | D |
| Sonesta International Hotel Corporation UT | Accommodation & Food Services | 0 | — | A |
| Sonesta International Hotel Corporation VA | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation WA | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation WI | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotel Corporation WV | Accommodation & Food Services | 0 | — | A |
| Sonesta International Hotels HI | Accommodation & Food Services | 0 | — | F |
| Sonesta International Hotels Corporation CA | — | 0 | — | — |
| Sonesta International Hotels Corporation MA | — | 0 | — | — |
| Sonet.io, Inc. CA | Information & Media | 2 | $178,787 | — |
| Sonetics Corporation OR | Manufacturing | 0 | — | D |
| Songbird Holdings WA | Construction | 0 | — | F |
| Songren Management Corp. (multiple locations) NY | — | 0 | — | — |
| Songwon International Americas, Inc. TX | Wholesale Trade | 0 | — | A |
| SONGWON INTL AMERICAS INC TX | Management of Companies | 0 | — | A |
| Sonia, Inc CA | Healthcare & Social Assistance | 0 | — | A |
| Sonic NE | — | 0 | — | — |
| Sonic Air Systems, Inc. CA | Manufacturing | 0 | — | F |
| Sonic Automotive, Inc. NC | Retail Trade | 1 | $160,000 | — |
| Sonic Financial Corporation NC | Management of Companies | 0 | — | A |
| SONIC HEALTH CARE CA | Healthcare & Social Assistance | 0 | — | F |
| Sonic Plating Co Inc CA | Manufacturing | 0 | — | A |
| Sonic Systems International, LLC NC | Utilities | 1 | $94,827 | — |
| Sonic Systems International, LLC TX | Utilities | 2 | $98,134 | — |
| Sonic.net, LLC CA | Information & Media | 0 | — | F |
| Sonica kommu UT | Professional & Technical Services | 1 | $104,978 | — |
| Sonicsoft Inc IL | Professional & Technical Services | 4 | $102,370 | — |
| SonicWall, Inc. CA | Professional & Technical Services | 4 | $146,000 | — |
| Sonida IN | Healthcare & Social Assistance | 0 | — | A |
| Sonida Senior Living AR | Healthcare & Social Assistance | 0 | — | A |
| Sonida Living IN | Healthcare & Social Assistance | 0 | — | A |
| Sonida Living MN | Real Estate | 0 | — | F |
| sonida living NY | Healthcare & Social Assistance | 0 | — | D |
| Sonida Living TX | Healthcare & Social Assistance | 0 | — | F |
| Sonida Living WI | Healthcare & Social Assistance | 0 | — | F |
| Sonida Senior Living IN | Healthcare & Social Assistance | 0 | — | A |
| Sonida Senior Living MA | Healthcare & Social Assistance | 0 | — | C |
