| Klamath Child and Family Treatment Center | Health Care and Social Assistance | $2,514,132 | $2,542,765 | 194 | $34.5M |  Research |
| Rocky Mountain Construction, LLC | Construction | $1,325,000 | $1,336,594 | 56 | $17.4M | Research |
| Rocky Mountain Construction LLC | Real Estate and Rental and Leasing | $1,325,000 | $1,336,362 | 80 | $9.3M | Research |
| Clv Properties LLC | Accommodation and Food Services | $1,194,563 | $1,203,367 | 56 | $17.5M | Research |
| Lariot Corporation | Accommodation and Food Services | $1,026,900 | $1,039,476 | 250 | $44.4M | Research |
| Stewart Restaurant Group, LLC | Accommodation and Food Services | $942,500 | $883,280 | 47 | $8.3M | Research |
| Zcs, Inc. | Professional, Scientific, and Technical Services | $903,926 | $912,287 | 47 | $5.8M | Research |
| Masami Foods INC | Manufacturing | $831,015 | $840,122 | 130 | $45.9M | Research |
| Clv Properties, LLC | Accommodation and Food Services | $816,300 | $822,137 | 90 | $28.1M | Research |
| Modoc Contracting Company | Construction | $808,330 | $814,597 | 70 | $79.8M | Research |
| Quail Mountain Inc. | Manufacturing | $755,259 | $760,819 | 62 | $21.9M | Research |
| Klamath Ophthalmology, P.c. | Health Care and Social Assistance | $741,300 | $750,053 | 66 | $15.5M | Research |
| Klamath Orthopedic Clinic PC | Health Care and Social Assistance | $709,620 | $715,608 | 69 | $21.7M | Research |
| Klamath Basin Equipment Inc. | Wholesale Trade | $676,453 | $682,272 | 43 | $13.2M | Research |
| Klamath Basin Equipment, Inc. | Wholesale Trade | $669,700 | $676,801 | 53 | $16.2M | Research |
| New Algae Company, Inc. | Manufacturing | $566,300 | $571,334 | 51 | $18.0M | Research |
| Fremont Millwork Co. | Manufacturing | $545,959 | $551,965 | 52 | $13.6M | Research |
| Reach, Inc. | Other Services (except Public Administration) | $540,430 | $546,234 | 165 | N/A | Research |
| Reach INC | Health Care and Social Assistance | $540,430 | $546,042 | 165 | N/A | Research |
| Fremont Millwork Co. | Manufacturing | $538,475 | $542,170 | 44 | $11.5M | Research |
| Bullet Rental & Sales, Inc. | Real Estate and Rental and Leasing | $510,327 | $514,098 | 39 | $17.6M | Research |
| Klamath Algae Products, Inc. | Wholesale Trade | $509,434 | $513,123 | 45 | $11.6M | Research |
| Bob's Excavating INC | Construction | $499,457 | $504,021 | 23 | $8.6M | Research |
| Bob's Excavating, INC | Construction | $488,611 | $492,832 | 42 | $15.7M | Research |
| Diversified Contractors INC | Construction | $484,642 | $488,386 | 38 | $43.3M | Research |