| BLACK ROCK ROASTING COMPANY WA | Manufacturing | 0 | — | A |
| Black Rock Services NM | Manufacturing | 0 | — | A |
| BLACK ROCK STORE OPERATIONS LLC AZ | Accommodation & Food Services | 0 | — | D |
| BLACK ROCK STORE OPERATIONS LLC CA | Accommodation & Food Services | 0 | — | F |
| BLACK ROCK STORE OPERATIONS LLC CO | Accommodation & Food Services | 0 | — | A |
| BLACK ROCK STORE OPERATIONS LLC ID | Accommodation & Food Services | 0 | — | A |
| BLACK ROCK STORE OPERATIONS LLC OR | Accommodation & Food Services | 0 | — | D |
| BLACK ROCK STORE OPERATIONS LLC TX | Accommodation & Food Services | 0 | — | C |
| BLACK ROCK STORE OPERATIONS LLC WA | Accommodation & Food Services | 0 | — | F |
| Black Roofing & Waterproofing CO | Construction | 0 | — | F |
| Black Sage Technologies ID | Manufacturing | 0 | — | A |
| Black Sapphire PA | Accommodation & Food Services | 0 | — | A |
| Black Sapphire C Settlers Ridge 2014 Inc PA | Accommodation & Food Services | 0 | — | A |
| Black Sesame Technologies Inc CA | Information & Media | 3 | $212,627 | — |
| Black Sheep Pizza MN | — | 0 | — | — |
| Black Shoe Hospitality WI | — | 0 | — | — |
| Black Smith Fork Assisted Living UT | Healthcare & Social Assistance | 0 | — | A |
| Black Soil Dairy MI | Agriculture & Forestry | 0 | — | D |
| Black Stallion, Inc. TX | Construction | 0 | — | A |
| Black Star Logistics LLC NJ | Transportation & Warehousing | 0 | — | A |
| Black Star Pavement Maintenance, Inc. CA | Construction | 0 | — | A |
| Black Star Ranch, LLC WA | Agriculture & Forestry | 0 | — | F |
| Black Swamp Steel, Inc. OH | Construction | 0 | — | D |
| Black Swan EmployerCo, LLC OK | Mining & Extraction | 1 | $161,512 | — |
| BLACK SWAN GLOBAL GROUP INC DE | Professional & Technical Services | 1 | $166,400 | — |
| Black Swan Manufacturing Company IL | Manufacturing | 0 | — | F |
| Black Tap Las Vegas, LLC NV | — | 0 | — | — |
| Black Tap Midtown, LLC aka Black Tap Craft Burgers & Beer NY | — | 0 | — | — |
| Black Tie Janitor LLC OH | Construction | 0 | — | A |
| Black Turtle Services UT | — | 0 | — | — |
| Black Warrior Electric Membership Corporation AL | Utilities | 0 | — | C |
| Black Water Lounge MN | — | 0 | — | — |
| Black's Hatchery & Turkey Farm, Inc. CA | Accommodation & Food Services | 0 | — | F |
| Black's Valley Ag Supply WI | Wholesale Trade | 0 | — | F |
| Black-Haak Heating, Inc. WI | Construction | 0 | — | D |
| Blackbaud, Inc CA | — | 0 | — | — |
| Blackbaud, Inc. SC | Professional & Technical Services | 3 | $1,316,000 | — |
| Blackbeard Operating, LLC TX | Mining & Extraction | 0 | — | F |
| BLACKBERRY CORPORATION CA | Information & Media | 2 | $132,077 | — |
| BlackBerry Corporation FL | — | 0 | — | — |
| BLACKBERRY CORPORATION TX | Information & Media | 6 | $213,893 | — |
| BlackBerry Windows & Doors MI | Construction | 0 | — | A |
| Blackbird Logistics, Inc. NV | Wholesale Trade | 0 | — | A |
| Blackboard Services, LLC (Blackboard Insurance) NY | — | 0 | — | — |
| BLACKBUCK INSIGHTS LLC IL | Professional & Technical Services | 10 | $111,813 | — |
| BLACKBURN ARCHITECTS, PC DC | Professional & Technical Services | 1 | $90,000 | — |
| Blackburn Building Service CT | Administrative & Waste Services | 0 | — | A |
| Blackburn Construction, INC. KS | Construction | 0 | — | A |
| Blackburn Construction, Inc. MS | Construction | 0 | — | A |
| Blackburn Plumbing LLC. OK | Construction | 0 | — | A |
