| Blackmon Mooring of Oklahoma City, LLC OK | Administrative & Waste Services | 0 | — | F |
| Blackmon Mooring of San Antonio, LLC TX | Administrative & Waste Services | 0 | — | F |
| Blackmon Mooring of Tulsa, LLC OK | Administrative & Waste Services | 0 | — | F |
| Blackmon Service, Inc. NC | Construction | 0 | — | F |
| Blackmon-Farrell Electric, Inc. NY | Construction | 0 | — | D |
| Blackmon-Mooring of Houston, LLC TX | Administrative & Waste Services | 0 | — | F |
| Blackmore & Buckner Roofing - A Tecta America Co., LLC IN | Construction | 0 | — | F |
| Blackpoint Holdings LLC CO | Professional & Technical Services | 1 | $160,000 | — |
| Blackrock Asphalt Co. FL | Construction | 0 | — | A |
| Blackrock Automation Inc. TX | Professional & Technical Services | 1 | $126,547 | — |
| BlackRock Corporation US, Inc. NJ | Finance & Insurance | 11 | $159,355 | — |
| BlackRock Financial Management, Inc. NJ | Finance & Insurance | 207 | $194,114 | — |
| BlackRock Index Services, LLC NJ | Finance & Insurance | 3 | $143,833 | — |
| BlackRock Institutional Services, Inc. NJ | Finance & Insurance | 7 | $168,414 | — |
| BlackRock Institutional Trust Company, N.A. NJ | Finance & Insurance | 11 | $179,136 | — |
| BlackRock Investment Management, LLC NJ | Finance & Insurance | 24 | $153,296 | — |
| Blackrock Microsystems, LLC UT | Manufacturing | 6 | $107,500 | — |
| Blackrock Milling LLC FL | Construction | 0 | — | A |
| BlackRock, Inc. CA | — | 0 | — | — |
| Blacksmith Enterprises Inc. dba Stodtmeister Iron NV | Manufacturing | 0 | — | B |
| Blackstar Delivery LLC GA | Transportation & Warehousing | 0 | — | F |
| Blackstar Farms LLC MI | Wholesale Trade | 0 | — | A |
| Blackstone MA | Healthcare & Social Assistance | 0 | — | F |
| Blackstone Advanced Technologies LLC NY | Manufacturing | 0 | — | C |
| Blackstone Construction AR | Construction | 0 | — | F |
| Blackstone Dilworth TX | Agriculture & Forestry | 0 | — | A |
| Blackstone Gaming - Hustler Casino CA | — | 0 | — | — |
| Blackstone Gaming LLC at Casino M8trix CA | — | 0 | — | — |
| Blackstone Gaming LLC dba Larry Flynt's Lucky Lady Casino CA | — | 0 | — | — |
| Blackstone Gaming LLC operations at Crystal Casino CA | — | 0 | — | — |
| Blackstone Gaming LLC operations at Ocean's Eleven Casino CA | — | 0 | — | — |
| Blackstone Gaming operations at Hustler Casino CA | — | 0 | — | — |
| Blackstone Gaming, LLC CA | — | 0 | — | — |
| Blackstone Hotel IL | — | 0 | — | — |
| Blackstone Industrial Services USA, Ltd. TX | Other Services | 0 | — | A |
| Blackstone Industries LLC CT | Manufacturing | 0 | — | F |
| Blackstone Trailer TX | Manufacturing | 0 | — | F |
| Blackstone, Inc. NY | Finance & Insurance | 39 | $180,000 | — |
| Blackstraw LLC FL | Professional & Technical Services | 1 | $145,000 | — |
| Blacktail R, LLC MT | Manufacturing | 1 | $93,246 | — |
| BlackTalon Enterprises, Inc. CA | — | 0 | — | — |
| Blackton Inc FL | Construction | 0 | — | F |
| Blacktop Maintenance Corporation NY | Construction | 0 | — | F |
| Blackwater Electric VA | Construction | 0 | — | A |
| Blackwater Management LLC MD | Transportation & Warehousing | 0 | — | F |
| Blackwell Consolidation, LLC OR | Transportation & Warehousing | 0 | — | C |
| BLACKWELL NORTH AMERICA, INC NJ | — | 0 | — | — |
| Blackwell's Inc GA | Construction | 0 | — | A |
| Blackwood Builders, Inc. WA | Construction | 0 | — | F |
| BLACKWOOD FINISH CARPENTRY INC MA | Construction | 1 | $72,613 | — |
