| Mariani Nut Company, a California General Partnership | Agriculture, Forestry, Fishing and Hunting | $5,934,615 | $6,003,229 | 484 | $24.3M |  Research |
| Buckhorn Cafe Inc. | Accommodation and Food Services | $1,232,224 | $1,247,113 | 194 | $34.4M | Research |
| Double M Trucking, INC | Transportation and Warehousing | $1,076,700 | $1,084,895 | 90 | $13.6M | Research |
| Double M Trucking INC | Transportation and Warehousing | $1,076,700 | $1,087,138 | 90 | $13.6M | Research |
| Weber General Engineering, Inc. | Construction | $935,155 | $940,662 | 121 | $37.5M | Research |
| Buckhorn Cafe INC | Accommodation and Food Services | $880,159 | $885,730 | 194 | $34.4M | Research |
| Haykingdom INC | Agriculture, Forestry, Fishing and Hunting | $686,900 | $693,355 | 81 | $8.3M | Research |
| Vintage Paving Co., Inc. | Construction | $578,093 | $581,657 | 47 | $14.6M | Research |
| Vintage Paving Co INC | Construction | $578,092 | $582,219 | 17 | $5.8M | Research |
| Martinez Orchards, INC | Agriculture, Forestry, Fishing and Hunting | $506,777 | $509,522 | 93 | $9.5M | Research |
| Martinez Orchards INC | Agriculture, Forestry, Fishing and Hunting | $506,777 | $511,803 | 93 | $9.5M | Research |
| Winters Healthcare Foundation Inc. | Health Care and Social Assistance | $486,687 | $489,418 | 31 | N/A | Research |
| Martinez Ranches Inc. | Agriculture, Forestry, Fishing and Hunting | $357,564 | $358,945 | 40 | <$5M | Research |
| Inn at Park Winters LLC | Accommodation and Food Services | $344,345 | $347,232 | 28 | $5.2M | Research |
| Martinez Ranches, Inc. | Agriculture, Forestry, Fishing and Hunting | $339,538 | $341,358 | 40 | <$5M | Research |
| Rominger Brothers Farms Inc. | Agriculture, Forestry, Fishing and Hunting | $318,400 | $320,363 | 37 | <$5M | Research |
| Angelo Vieira | Agriculture, Forestry, Fishing and Hunting | $317,500 | $319,709 | 17 | <$5M | Research |
| Hotel Winters, LLC | Accommodation and Food Services | $310,000 | $313,143 | 36 | $11.3M | Research |
| B & D Geerts Construction INC | Construction | $309,620 | $312,479 | 24 | $27.3M | Research |
| Hotel Winters Restaurant Event Center | Accommodation and Food Services | $302,557 | $306,423 | 40 | $7.1M | Research |
| Terra Firma Farm, Inc. | Agriculture, Forestry, Fishing and Hunting | $294,147 | $298,080 | 34 | <$5M | Research |
| Preserve INC | Accommodation and Food Services | $284,728 | $287,006 | 30 | $5.3M | Research |
| Biosurg, INC | Professional, Scientific, and Technical Services | $258,560 | $259,953 | 43 | $8.9M | Research |
| D.a. Rominger & Sons INC | Agriculture, Forestry, Fishing and Hunting | $255,276 | $258,563 | 67 | $6.8M | Research |
| Dixon Ridge Farms | Agriculture, Forestry, Fishing and Hunting | $250,000 | $252,722 | 40 | <$5M | Research |