| $150,000–350,000 | JARRED MELLO | Waterford, CA | Mechanics Bank |
| $350,000–1 million | JARVIS | NAPA, CA | Mechanics Bank |
| $350,000–1 million | JARVIS | Napa, CA | Mechanics Bank |
| $350,000–1 million | JD HUMANN LANDSCAPING, INC. | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | JD MECHANICAL INC. | Indio, CA | Mechanics Bank |
| $350,000–1 million | JDB PRO INC | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | JDK & COMPANY, INC. | CONCORD, CA | Mechanics Bank |
| $150,000–350,000 | JDM FOODS CORP | Hollister, CA | Mechanics Bank |
| $150,000–350,000 | JDM FOODS CORPORATION | HOLLISTER, CA | Mechanics Bank |
| $2–5 million | JEAN CLAUDE BOISSET WINES USA INC | ST HELENA, CA | Mechanics Bank |
| $150,000–350,000 | JEFFREY VON HILL D.O. PA DBA ELEVATION PHYSICIANS | Folsom, CA | Mechanics Bank |
| $150,000–350,000 | JEFFREY VON HILL D.O. PA DBA ELEVATION PHYSICIANS | Folsom, CA | Mechanics Bank |
| $350,000–1 million | JENNINGS AERONAUTICS INC. | San Luis Obispo, CA | Mechanics Bank |
| $350,000–1 million | JENNINGS AERONAUTICS, INC. | SAN LUIS OBISPO, CA | Mechanics Bank |
| $350,000–1 million | JENSCO INC. | SALINAS, CA | Mechanics Bank |
| $350,000–1 million | JENSCO INC. | Salinas, CA | Mechanics Bank |
| $150,000–350,000 | JESSEN, INC. | VISALIA, CA | Mechanics Bank |
| $150,000–350,000 | JF GEORGE ENTERPRISES INC. | Visalia, CA | Mechanics Bank |
| $150,000–350,000 | JIM'S HONEY FARM LLC | Bakersfield, CA | Mechanics Bank |
| $350,000–1 million | JIM'S SUPPLY CO INC. | Bakersfield, CA | Mechanics Bank |
| $350,000–1 million | JIM'S SUPPLY CO., INC. | BAKERSFIELD, CA | Mechanics Bank |
| $1–2 million | JIMS TOWING SERVICE INC | Bakersfield, CA | Mechanics Bank |
| $1–2 million | JIMS TOWING SERVICE INC | BAKERSFIELD, CA | Mechanics Bank |
| $150,000–350,000 | JM DESIGN CONTRACTORS INC | Westlake Village, CA | Mechanics Bank |
| $150,000–350,000 | JM DESIGN CONTRACTORS INC | WESTLAKE VILLAGE, CA | Mechanics Bank |
| $150,000–350,000 | JOANNE CURRIE DBA SPLASH CAFE | NIPOMO, CA | Mechanics Bank |
| $350,000–1 million | JOEL HEWATT CO. | Pittsburg, CA | Mechanics Bank |
| $350,000–1 million | JOEL HEWATT COMPANY | PITTSBURG, CA | Mechanics Bank |
| $350,000–1 million | JOES DOWNTOWN BREWERY AND RESTAURANT INC. | Napa, CA | Mechanics Bank |
| $1–2 million | JOHN KAUTZ FARMS | LODI, CA | Mechanics Bank |
| $350,000–1 million | JOHN MURRAY PRODUCTIONS INC | Oakland, CA | Mechanics Bank |
| $350,000–1 million | JOHN MURRAY PRODUCTIONS, INC | OAKLAND, CA | Mechanics Bank |
| $150,000–350,000 | JOHN P BLANCHARD MD INC | Santa Barbara, CA | Mechanics Bank |
| $150,000–350,000 | JOHN P BLANCHARD MD INC DBA MISSION PATHOLOGY CONSULTANTS IN | SANTA BARBARA, CA | Mechanics Bank |
| $150,000–350,000 | JOHN SILVEIRA DAIRY INC | NEWMAN, CA | Mechanics Bank |
| $150,000–350,000 | JOHNSON'S FAMILY SHOE STORES, INC | Chico, CA | Mechanics Bank |
| $150,000–350,000 | JOHNSON, HANKINS, MACDONALD, KIMBALL & CO. | Walnut Creek, CA | Mechanics Bank |
| $150,000–350,000 | JON VA INC | SAN LUIS OBISPO, CA | Mechanics Bank |
| $150,000–350,000 | JON VA INC | San Luis Obispo, CA | Mechanics Bank |
| $150,000–350,000 | JOSE MANUEL ESCAMILLA | THOUSAND PALMS, CA | Mechanics Bank |
| $350,000–1 million | JOSE MENDOZA SEPULVEDA | SALINAS, CA | Mechanics Bank |
| $150,000–350,000 | JOSH WATT ELECTRIC INC. | Hollister, CA | Mechanics Bank |
| $350,000–1 million | JOST FARMS INC. | Traver, CA | Mechanics Bank |
| $150,000–350,000 | JOST FARMS, INC. | TRAVER, CA | Mechanics Bank |
| $150,000–350,000 | JP ELECTRICAL SERVICE INC | Visalia, CA | Mechanics Bank |
| $150,000–350,000 | JP ELECTRICAL SOLAR, INC. | VISALIA, CA | Mechanics Bank |
| $150,000–350,000 | JR DAIRY | TIPTON, CA | Mechanics Bank |
| $150,000–350,000 | JS AUDIT GROUP, INC. | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | JUANITA & MAUDE | Albany, CA | Mechanics Bank |
| $350,000–1 million | JZ RESTAURANTS, L.L.C. | Walnut Creek, CA | Mechanics Bank |
| $150,000–350,000 | JZ RESTAURANTS, L.L.C. | MARTINEZ, CA | Mechanics Bank |
| $350,000–1 million | JZB FARMING, INC. | PIXLEY, CA | Mechanics Bank |
| $150,000–350,000 | K & D TOWING INC. | Santa Maria, CA | Mechanics Bank |
| $150,000–350,000 | K & D TOWING, INC. | SANTA MARIA, CA | Mechanics Bank |
| $350,000–1 million | K MCCALL CONSTRUCTION CO, INC. | ARROYO GRANDE, CA | Mechanics Bank |
| $150,000–350,000 | K&G UNLIMITED | EL SOBRANTE, CA | Mechanics Bank |
| $350,000–1 million | K-C WELDING & RENTALS, INC | EL CENTRO, CA | Mechanics Bank |
| $1–2 million | K.W. EMERSON INC. | San Andreas, CA | Mechanics Bank |
| $1–2 million | K.W. EMERSON, INC. | SAN ANDREAS, CA | Mechanics Bank |
| $150,000–350,000 | KAIN BUILDING AND DESIGN GROUP LLC | San Luis Obispo, CA | Mechanics Bank |
| $150,000–350,000 | KAIN BUILDING AND DESIGN GROUP, LLC | GROVER BEACH, CA | Mechanics Bank |
| $350,000–1 million | KANG FAMILY PARTNERS LLC | Buellton, CA | Mechanics Bank |
| $350,000–1 million | KANG FAMILY PARTNERS LLC | BUELLTON, CA | Mechanics Bank |
| $1–2 million | KANSAS SMITH FARMS, LLC | PLAINS, KS | Mechanics Bank |
| $150,000–350,000 | KARL FUNK CONST. INC | Carpinteria, CA | Mechanics Bank |
| $1–2 million | KARUK TRIBE DBA RAIN ROCK CASINO | Yreka, CA | Mechanics Bank |
| $350,000–1 million | KASTNER AUTOMOTIVE INC | NAPA, CA | Mechanics Bank |
| $350,000–1 million | KATSURA KHALIL NAKAZATO KHOSROVANI DDS INC. | Berkeley, CA | Mechanics Bank |
| $350,000–1 million | KATSURA, KHALIL, NAKAZATO, KHOSROVANI, DDS, INC. | Berkeley, CA | Mechanics Bank |
| $350,000–1 million | KAUTZ VINEYARDS, INC. | Murphys, CA | Mechanics Bank |
| $350,000–1 million | KAUTZ VINEYARDS, INC. | MURPHYS, CA | Mechanics Bank |
| $150,000–350,000 | KEENE BUILDERS INC | BERKELEY, CA | Mechanics Bank |
| $150,000–350,000 | KEENE BUILDERS INC. | Berkeley, CA | Mechanics Bank |
| $350,000–1 million | KEN GRODY REDLANDS, LLC | REDLANDS, CA | Mechanics Bank |
| $350,000–1 million | KENNEDY MANAGEMENT SERVICES INC. | Atascadero, CA | Mechanics Bank |
| $350,000–1 million | KENNEDY MANAGEMENT SERVICES, INC. | ATASCADERO, CA | Mechanics Bank |
| $150,000–350,000 | KERLEY SCHAFFER LLP | OAKLAND, CA | Mechanics Bank |
| $150,000–350,000 | KERN COUNTY NEUROLOGICAL MEDICAL GROUP, INC. | BAKERSFIELD, CA | Mechanics Bank |
| $1–2 million | KERN MACHINERY, INC | BAKERSFIELD, CA | Mechanics Bank |
| $350,000–1 million | KERN PACIFIC CONSTRUCTION CO. | BAKERSFIELD, CA | Mechanics Bank |
| $150,000–350,000 | KERN RANCH HOMES, INC. | Bakersfield, CA | Mechanics Bank |
| $150,000–350,000 | KERN RESIDENTIAL SERVICE, INC | Bakersfield, CA | Mechanics Bank |
| $150,000–350,000 | KETER SALON INC | BERKELEY, CA | Mechanics Bank |
| $150,000–350,000 | KETER SALON INC | Berkeley, CA | Mechanics Bank |
| $350,000–1 million | KG BERRY FARMS, LLC | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | KIM LAUBE & CO., INC | OXNARD, CA | Mechanics Bank |
| $350,000–1 million | KINDER'S CUSTOM MEATS, INC. | CONCORD, CA | Mechanics Bank |
| $150,000–350,000 | KINDUSTRIES II, LLC | CONCORD, CA | Mechanics Bank |
| $150,000–350,000 | KINDUSTRIES, LLC | CONCORD, CA | Mechanics Bank |
| $1–2 million | KINETICS MECHANICAL SERVICE, INC. | Livermore, CA | Mechanics Bank |
| $150,000–350,000 | KINGS RIVER TRACTOR, INC | REEDLEY, CA | Mechanics Bank |
| $1–2 million | KINLY INC. | Cedar Knolls, NJ | Mechanics Bank |
| $350,000–1 million | KIRBY MANUFACTURING, INC. | MERCED, CA | Mechanics Bank |
| $150,000–350,000 | KIRK A SPECHT DDS | Santa Maria, CA | Mechanics Bank |
| $150,000–350,000 | KIRK A SPECHT DDS MS | Santa Maria, CA | Mechanics Bank |
| $150,000–350,000 | KITCHEN ON FIRE LLC | Berkeley, CA | Mechanics Bank |
| $150,000–350,000 | KLEEN GLOBE INC | CASTROVILLE, CA | Mechanics Bank |
| $350,000–1 million | KLEEN HARVEST | SALINAS, CA | Mechanics Bank |
| $150,000–350,000 | KLIEWER PACKING | REEDLEY, CA | Mechanics Bank |
| $350,000–1 million | KLX LLC | Visalia, CA | Mechanics Bank |