| Sig Sauer NH | Manufacturing | 0 | — | D |
| Sig Sauer OR | Manufacturing | 0 | — | A |
| Sig Sauer - Triangle 1 AR | Manufacturing | 0 | — | A |
| Sig Sauer Inc - Spokane Ct OR | Manufacturing | 0 | — | A |
| Sig Sauer Inc - Tualatin Rd OR | Manufacturing | 0 | — | A |
| Sig Sauer Inc - Wilsonville OR | Manufacturing | 0 | — | F |
| Sig Sauer Redmond AR | Manufacturing | 0 | — | A |
| SIGCO Inc. ME | Manufacturing | 0 | — | F |
| SIGGA USA, LLC TX | Professional & Technical Services | 1 | $90,896 | — |
| Sight & Sound Ministries PA | Arts & Entertainment | 0 | — | F |
| Sight & Sound Ministries, Inc. MO | Arts & Entertainment | 0 | — | F |
| Sight Sciences, Inc. CA | Manufacturing | 2 | $136,534 | — |
| Sightbox, Inc. OR | — | 0 | — | — |
| SightLife CA | Healthcare & Social Assistance | 0 | — | F |
| SightLife PA | Healthcare & Social Assistance | 0 | — | A |
| SightLife WA | Healthcare & Social Assistance | 0 | — | D |
| Sightline Commercial Solutions MN | Manufacturing | 0 | — | F |
| Sightline Hospitality CA | Accommodation & Food Services | 0 | — | A |
| Sightly Enterprises, Inc. CA | Professional & Technical Services | 1 | $145,000 | — |
| SightSpectrum LLC TX | Professional & Technical Services | 2 | $125,180 | — |
| Sigler Companies IA | Manufacturing | 0 | — | D |
| Sigma TX | Transportation & Warehousing | 0 | — | A |
| Sigma Aldrich, LLC IL | Manufacturing | 0 | — | A |
| Sigma Analytics LLC FL | Professional & Technical Services | 3 | $122,131 | — |
| Sigma C Power Services LLC MA | Professional & Technical Services | 0 | — | A |
| Sigma Companies LLC NV | Construction | 0 | — | F |
| Sigma Computing, Inc. CA | Information & Media | 17 | $200,775 | — |
| Sigma Connectivity Inc. CA | Professional & Technical Services | 2 | $148,700 | — |
| Sigma Construction, Inc. NJ | Construction | 3 | $90,933 | — |
| Sigma Corporation AL | Transportation & Warehousing | 0 | — | A |
| Sigma Corporation CA | Transportation & Warehousing | 0 | — | A |
| Sigma Corporation CO | Transportation & Warehousing | 0 | — | A |
| Sigma Corporation IL | Transportation & Warehousing | 0 | — | A |
| Sigma Design, Inc. WA | Professional & Technical Services | 0 | — | F |
| Sigma Electric NC | Transportation & Warehousing | 0 | — | A |
| Sigma Electric Manufacturing Corporation NC | Manufacturing | 1 | $128,253 | — |
| Sigma Engineered Solutions P.C. WI | Manufacturing | 0 | — | A |
| Sigma Engineered Solutions-Tooling Dynamics PA | Manufacturing | 0 | — | A |
| Sigma Enterprises, LLC. MN | Retail Trade | 0 | — | A |
| Sigma Extruding NJ | Manufacturing | 0 | — | C |
| Sigma Extruding Corp FL | Manufacturing | 0 | — | F |
| Sigma Graphics LLC IL | Manufacturing | 0 | — | A |
| SIGMA GROUP INC NJ | Professional & Technical Services | 4 | $121,800 | — |
| Sigma Infotech, Inc. TX | Professional & Technical Services | 1 | $105,997 | — |
| Sigma IT Corp MO | Professional & Technical Services | 1 | $69,534 | — |
| Sigma Machine Inc. MI | Manufacturing | 0 | — | F |
| Sigma Marble & Granite TX | Construction | 0 | — | F |
| Sigma Marble Tile FL | Construction | 0 | — | A |
| Sigma MArble Tile TX | Construction | 0 | — | F |
| Sigma Piping Products TX | Transportation & Warehousing | 0 | — | B |
