| Builders Services Group VA | Construction | 0 | — | B |
| Builders Services Group WA | Construction | 0 | — | C |
| Builders Services Group WI | Construction | 0 | — | C |
| Builders Source Inc. DBA Dalton Service Center NM | Other Services | 0 | — | C |
| Builders Source, Inc TX | Wholesale Trade | 0 | — | A |
| Builders Source, Inc DBA Baillio NM | Wholesale Trade | 0 | — | A |
| Builders Source, Inc dba Cunningham Distributing TX | Wholesale Trade | 0 | — | D |
| Builders Source, Inc dba Dalton Service Center TX | Other Services | 0 | — | F |
| Builders Source, Inc. NM | Wholesale Trade | 0 | — | D |
| Builders Steel Company MO | Manufacturing | 0 | — | F |
| Builders Supply Co Inc. AL | Retail Trade | 0 | — | F |
| Builders Supply Co., Inc. NE | Retail Trade | 0 | — | F |
| Builders Supply Company LA | Manufacturing | 0 | — | F |
| Builders Supply, Inc. OK | Wholesale Trade | 0 | — | A |
| Builders Surplus of Garland, LLC TX | Retail Trade | 0 | — | A |
| Builders Systems Inc MA | Construction | 0 | — | F |
| Builders Warehouse Inc CO | Manufacturing | 0 | — | F |
| Builders Warehouse Inc NE | Retail Trade | 0 | — | D |
| Builders Wholesale Flooring LLC SC | Wholesale Trade | 0 | — | A |
| Buildertrend Solutions, Inc. NE | Information & Media | 2 | $141,548 | A |
| Building America Stronger Welding, LLC MD | Construction | 0 | — | A |
| Building Automation Products, Inc. WI | Manufacturing | 0 | — | F |
| Building Blocks Counseling, LLC AZ | Healthcare & Social Assistance | 0 | — | F |
| Building Blocks Masonry Inc IN | Construction | 0 | — | A |
| Building Contractors, Inc. TX | Administrative & Waste Services | 0 | — | B |
| Building Control Integrators, LLC OH | Construction | 0 | — | A |
| Building Crafts, Inc. IA | Construction | 0 | — | C |
| Building Crafts, Inc. KY | Construction | 0 | — | D |
| Building Enclosure Science RI | Professional & Technical Services | 0 | — | F |
| Building Energy Corporation VT | Construction | 0 | — | F |
| Building Envelope Systems MA | Manufacturing | 0 | — | F |
| Building Erection Services Company, Inc. MO | Construction | 0 | — | F |
| Building Healthy Futures NE | — | 0 | — | — |
| Building Hope Inc MN | Healthcare & Social Assistance | 0 | — | A |
| Building Industry Consulting Service International (BICSI) FL | Other Services | 0 | — | C |
| Building Infrastructure Solutions Group Intermediate Holdings, LLC MD | Construction | 0 | — | F |
| Building Integrated Services, LLC OH | Construction | 0 | — | A |
| Building Maintenance Service LLC NY | — | 0 | — | — |
| BUILDING MAINTENANCE SERVICES, INC. GA | Administrative & Waste Services | 0 | — | A |
| Building Maintenance Technologies, Inc. IN | Administrative & Waste Services | 0 | — | A |
| Building Markets Ltd. NY | Professional & Technical Services | 1 | $93,725 | — |
| Building Material Distributors, Inc. CA | Wholesale Trade | 0 | — | D |
| Building Material Distributors, Inc. NC | Wholesale Trade | 0 | — | C |
| Building Material Specialties, Inc. OR | Retail Trade | 0 | — | A |
| Building Materials Distributors, Inc CA | Wholesale Trade | 0 | — | A |
| Building Materials Manufacturing LLC NJ | Manufacturing | 3 | $2,893,304 | — |
| Building Materials Manufacturing LLC (a/k/a GAF) CA | — | 0 | — | — |
| BUILDING ONE FACILITY SERVICES CT | Administrative & Waste Services | 0 | — | C |
| Building Products Inc MN | Wholesale Trade | 0 | — | A |
| Building Products Inc. SD | Wholesale Trade | 0 | — | A |
