| Pacific Imaging Management, LLC | Health Care and Social Assistance | $1,565,435 | $1,583,877 | 112 | $35.2M |  Research |
| Precision Directional Boring, Inc. | Construction | $679,410 | $684,231 | 30 | $9.3M | Research |
| Weyrick Companies, Inc. | Wholesale Trade | $640,500 | $645,571 | 51 | $15.6M | Research |
| Impg Inc. | Accommodation and Food Services | $487,700 | $494,327 | 41 | $7.3M | Research |
| Vineyard Professional Services INC | Agriculture, Forestry, Fishing and Hunting | $482,968 | $485,429 | 35 | <$5M | Research |
| Precision Directional Boring, Inc. | Construction | $453,209 | $457,468 | 19 | $5.9M | Research |
| San Luis Obispo Eye Associates | Health Care and Social Assistance | $447,095 | $449,692 | 53 | $16.6M | Research |
| Premier Winery & Vineyard Services LLC | Agriculture, Forestry, Fishing and Hunting | $393,509 | $395,622 | 50 | <$5M | Research |
| Impg Inc. | Accommodation and Food Services | $378,897 | $229,232 | 40 | $7.1M | Research |
| Premier Winery & Vineyard Services, LLC | Manufacturing | $373,700 | $378,778 | 55 | $19.4M | Research |
| Radiology Associates of San Luis Obispo, a Medical Group, in | Health Care and Social Assistance | $370,368 | $374,721 | 16 | $5.0M | Research |
| Kw Curtis Enterprises INC | Administrative and Support and Waste Management | $300,760 | $301,696 | 28 | $6.1M | Research |
| Carmelo A. Plateroti, D.o., a Professional Corporation | Health Care and Social Assistance | $293,620 | $293,984 | 19 | $6.0M | Research |
| Bradley S. Kurgis Do Inc. | Health Care and Social Assistance | $278,120 | $281,115 | 25 | $7.8M | Research |
| Bradley S. Kurgis D.o. Inc. | Health Care and Social Assistance | $269,337 | $272,326 | 26 | $5.2M | Research |
| Mesa Vineyard Custom Services | Agriculture, Forestry, Fishing and Hunting | $229,493 | $230,711 | 13 | <$5M | Research |
| Paris Valley Vineyard Services Company | Administrative and Support and Waste Management | $219,633 | $221,610 | 80 | $12.6M | Research |
| Templeton Floor Company, Inc. | Construction | $216,245 | $217,501 | 14 | <$5M | Research |
| Competitive Edge Media Management Inc. | Professional, Scientific, and Technical Services | $204,502 | $181,213 | 8 | <$5M | Research |
| Edsal Veterinary Corporation | Professional, Scientific, and Technical Services | $196,580 | $198,826 | 16 | <$5M | Research |
| Miller Drilling Company, Inc. | Construction | $189,600 | $191,792 | 14 | <$5M | Research |
| Woodward Acoustics INC | Construction | $185,295 | $187,169 | 14 | <$5M | Research |
| Donati Family Vineyard INC | Manufacturing | $185,225 | $186,141 | 13 | <$5M | Research |
| Energy Delivery Partners INC | Construction | $184,496 | $184,926 | 29 | $9.0M | Research |
| Carmelo A. Plateroti D.o. a Professional Corporation | Health Care and Social Assistance | $183,750 | $185,895 | 29 | $9.1M | Research |