| Clark & Associates Contracting Inc FL | Construction | 0 | — | A |
| Clark & Sullivan Builders, Inc. CA | Construction | 1 | $83,928 | — |
| Clark and Riggs Printing Inc KY | Manufacturing | 0 | — | B |
| Clark and Sons Contracting Corporation CA | Construction | 0 | — | F |
| Clark Asphalt Products, LLC. TX | Construction | 0 | — | A |
| Clark Associates PA | Transportation & Warehousing | 0 | — | D |
| Clark Atlanta University GA | Educational Services | 4 | $83,223 | — |
| Clark Barnes PLLC WA | Professional & Technical Services | 1 | $71,365 | — |
| Clark Beverage Co., Inc. KY | Wholesale Trade | 0 | — | F |
| Clark Beverage Group Inc MS | Wholesale Trade | 0 | — | F |
| Clark Beverage Group., Inc. MS | Wholesale Trade | 0 | — | D |
| Clark Bros. Inc CA | Construction | 0 | — | F |
| Clark Cemetery Services OH | Manufacturing | 0 | — | A |
| Clark Cemetery Services TN | Manufacturing | 0 | — | F |
| Clark College WA | Educational Services | 0 | — | B |
| Clark Construction Company MI | Construction | 0 | — | A |
| CLARK CONSTRUCTION GROUP, LLC MD | Construction | 7 | $121,631 | B |
| Clark Construction Group, LLC VA | Professional & Technical Services | 2 | $116,357 | A |
| CLARK CONSTRUCTION GROUP-CA, LP CA | Construction | 1 | $130,000 | — |
| Clark Construction Inc. WA | Construction | 0 | — | B |
| Clark Construction of Texas TX | Construction | 0 | — | F |
| CLARK CONSTRUCTION, INC. OF MISSISSIPPI MS | Construction | 0 | — | A |
| Clark Constructuion Group LLC MD | Construction | 0 | — | B |
| CLARK CONTAINER, INC. TN | Manufacturing | 0 | — | F |
| Clark Contractors, Inc. PA | Construction | 0 | — | A |
| Clark Contractors, LLC AR | Construction | 0 | — | A |
| Clark County NV | Public Administration | 0 | — | D |
| Clark County Department of Aviation NV | Transportation & Warehousing | 0 | — | F |
| Clark County Government IN | Public Administration | 0 | — | A |
| Clark County Nursing Home MO | Healthcare & Social Assistance | 0 | — | F |
| Clark County REMC IN | Utilities | 0 | — | F |
| Clark County Sheriff Department IN | Public Administration | 0 | — | C |
| Clark County Washington WA | Public Administration | 0 | — | F |
| Clark County Window NV | Manufacturing | 0 | — | F |
| Clark Courier Service, LLC TX | Transportation & Warehousing | 0 | — | A |
| Clark Devon Hardware IL | Retail Trade | 0 | — | A |
| Clark Distributing Co., Inc. KY | Wholesale Trade | 0 | — | F |
| Clark Drew Construction SD | Construction | 0 | — | F |
| CLARK EMERGENCY PHYSICIANS, PLLC KY | Healthcare & Social Assistance | 1 | $441,600 | — |
| Clark Energy Cooperative KY | Utilities | 0 | — | F |
| CLARK ENGINEERING MI | Manufacturing | 0 | — | A |
| Clark Equipment Company DBA Doosan Bobcat NC | Manufacturing | 0 | — | F |
| Clark Floyd Landfill, LLC IN | Administrative & Waste Services | 0 | — | A |
| Clark Food Inc IN | Manufacturing | 0 | — | A |
| Clark Fork Health Care MT | Healthcare & Social Assistance | 0 | — | A |
| Clark Grave Vault NC | Manufacturing | 0 | — | A |
| Clark Grave Vault Company GA | Manufacturing | 0 | — | A |
| Clark Grave Vault Company KY | Manufacturing | 0 | — | A |
| Clark Grave Vault Company MS | Manufacturing | 0 | — | A |
| Clark Grave Vault Company OH | Manufacturing | 0 | — | F |
