| Kobe Steel USA, Inc. OH | Manufacturing | 0 | — | B |
| Kobelco KY | Manufacturing | 0 | — | F |
| Kobelco Compressors America, Inc CA | Manufacturing | 0 | — | B |
| Kobelco Compressors Manufacturing Indiana Inc. IN | Manufacturing | 0 | — | A |
| Kobelco Construction Machinery SC | — | 0 | — | — |
| Koberstein Contracting Inc IN | Construction | 0 | — | F |
| Kobert Company Inc dba L.H. Dottie CA | Wholesale Trade | 0 | — | F |
| KOBITON INC. GA | Professional & Technical Services | 1 | $135,000 | — |
| KOBO Utility Construction Corporation MA | Construction | 0 | — | A |
| Kobold Construction Concrete Inc CA | Construction | 0 | — | F |
| Kobra Molds WI | Manufacturing | 0 | — | F |
| Kobrand Corporation NY | Wholesale Trade | 0 | — | A |
| Kobre & Kim LLP NY | Professional & Technical Services | 1 | $123,656 | — |
| Kobussen Buses LTD WI | Transportation & Warehousing | 0 | — | A |
| Koch & Company, Inc KS | Manufacturing | 0 | — | F |
| Koch & Company, Inc SC | Manufacturing | 0 | — | A |
| Koch & White Heating & Cooling MI | Construction | 0 | — | F |
| Koch Ag & Energy Solutions, LLC KS | Manufacturing | 3 | $110,000 | — |
| Koch Air LLC KY | Wholesale Trade | 0 | — | D |
| Koch Air, LLC. IN | Wholesale Trade | 0 | — | A |
| Koch Air, LLc. MO | Wholesale Trade | 0 | — | B |
| Koch and Co SC | Manufacturing | 0 | — | F |
| Koch and Co., Inc KS | Manufacturing | 0 | — | F |
| Koch and Co., Inc. TN | Manufacturing | 0 | — | B |
| KOCH BETHLEHEM FORD LLC PA | Retail Trade | 0 | — | F |
| Koch Brothers, Inc. IA | Wholesale Trade | 0 | — | A |
| Koch Capabilities, LLC KS | Professional & Technical Services | 4 | $111,250 | — |
| Koch Carriers KS | Transportation & Warehousing | 0 | — | C |
| Koch Companies CA | Professional & Technical Services | 0 | — | F |
| Koch Companies GA | Transportation & Warehousing | 0 | — | F |
| Koch Companies IL | Retail Trade | 0 | — | A |
| Koch Companies MN | Transportation & Warehousing | 0 | — | C |
| Koch Companies OK | Transportation & Warehousing | 0 | — | A |
| Koch Companies TN | Professional & Technical Services | 0 | — | A |
| Koch Companies/Koch Trucking MN | Professional & Technical Services | 0 | — | A |
| Koch Development Corporation IN | Arts & Entertainment | 0 | — | B |
| Koch Energy Services TX | Utilities | 0 | — | A |
| Koch Family Entertainment LLC AL | Arts & Entertainment | 0 | — | A |
| Koch Farms of Alabama LLC AL | Agriculture & Forestry | 0 | — | A |
| Koch Farms of Georgia AL | Agriculture & Forestry | 0 | — | A |
| Koch Fertilizer OK | Manufacturing | 0 | — | D |
| Koch Fertilizer Fort Dodge, LLC IA | Manufacturing | 0 | — | D |
| Koch Fertilizer Wever, LLC IA | Manufacturing | 3 | $120,000 | — |
| Koch Food, Inc. AL | Agriculture & Forestry | 0 | — | A |
| Koch Foods AL | Manufacturing | 0 | — | A |
| Koch Foods GA | Manufacturing | 0 | — | A |
| Koch Foods OH | Manufacturing | 0 | — | C |
| Koch Foods TN | Manufacturing | 0 | — | A |
| Koch Foods Cincinnati, LLC OH | Manufacturing | 0 | — | D |
| Koch Foods Inc. IL | Manufacturing | 0 | — | F |
