| $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 |
| $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 |
| $1–2 million | KANSAS SMITH FARMS, LLC | PLAINS, KS | 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 | KAUTZ VINEYARDS, INC. | MURPHYS, 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 |
| $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 |
| $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 MS | SANTA MARIA, 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 |
| $150,000–350,000 | KOCH MESA NURSERY INC | NIPOMO, CA | Mechanics Bank |
| $350,000–1 million | KOCHERGEN FARMS COMPOSTING, INC. | FRESNO, CA | Mechanics Bank |
| $350,000–1 million | KRISHNAMURTI FOUNDATION OF AMERICA | OJAI, CA | Mechanics Bank |
| $350,000–1 million | KUHN HAY, INC. | EL CENTRO, CA | Mechanics Bank |
| $150,000–350,000 | KW CURTIS ENTERPRISES, INC. | PASO ROBLES, CA | Mechanics Bank |
| $350,000–1 million | L & G FARMING | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | L&L INTERIORS, INC. | FRESNO, CA | Mechanics Bank |
| $1–2 million | L. P. MCNEAR BRICK CO., INC. | SAN RAFAEL, CA | Mechanics Bank |
| $1–2 million | L.J. KRUSE CO. | BERKELEY, CA | Mechanics Bank |
| $350,000–1 million | LA CHEIM SCHOOL, INC | EL SOBRANTE, CA | Mechanics Bank |
| $1–2 million | LA CUMBRE AG LABOR | DELANO, CA | Mechanics Bank |
| $150,000–350,000 | LA NEVERIA LLC | SANTA ROSA, CA | Mechanics Bank |
| $150,000–350,000 | LA STRADA RESTAURANT | SAN PABLO, CA | Mechanics Bank |
| $1–2 million | LABRUCHERIE PRODUCE | EL CENTRO, CA | Mechanics Bank |
| $350,000–1 million | LAIRD FAMILY ESTATE LLC | NAPA, CA | Mechanics Bank |
| $150,000–350,000 | LAKESIDE DAIRY | TULARE, CA | Mechanics Bank |
| $150,000–350,000 | LALEH SHABAN INC. | SAN LUIS OBISPO, CA | Mechanics Bank |
| $150,000–350,000 | LANCE REEVES | BRAWLEY, CA | Mechanics Bank |
| $150,000–350,000 | LANDMARK CONSULTANTS, INC. | EL CENTRO, CA | Mechanics Bank |
| $150,000–350,000 | LARRY M. CHO, M.D., INC. | BAKERSFIELD, CA | Mechanics Bank |
| $350,000–1 million | LARSON'S GROCERY OF OXFORD INC. | OXFORD, MS | Mechanics Bank |
| $150,000–350,000 | LARSON'S GROCERY OF WATER VALLEY INC | WATER VALLEY, MS | Mechanics Bank |
| $150,000–350,000 | LASALLE ELECTRIC, INC. | THOUSAND PALMS, CA | Mechanics Bank |
| $1–2 million | LATINO FARM LABOR SERVICE | VISALIA, CA | Mechanics Bank |
| $350,000–1 million | LB HARVESTING, INC. | COACHELLA, CA | Mechanics Bank |
| $350,000–1 million | LC FARM SERVICE INC | SANTA MARIA, CA | Mechanics Bank |
| $150,000–350,000 | LE POIL INC. | EMERYVILLE, CA | Mechanics Bank |
| $150,000–350,000 | LENZ INC | RICHMOND, CA | Mechanics Bank |
| $1–2 million | LEO TIDWELL EXCAVATING CORPORATION | PASO ROBLES, CA | Mechanics Bank |
| $350,000–1 million | LEON'S LANDSCAPING AND TREE SERVICE | INDIO, CA | Mechanics Bank |
| $350,000–1 million | LETSGOLEARN, INC. | KENSINGTON, CA | Mechanics Bank |
| $150,000–350,000 | LHAS LLC | SANTA ROSA, CA | Mechanics Bank |
| $350,000–1 million | LIDCO, INC. | BRAWLEY, CA | Mechanics Bank |
| $350,000–1 million | LIFE OPTIONS, VOCATIONAL AND RESOURCE CENTER | LOMPOC, CA | Mechanics Bank |
| $150,000–350,000 | LIMBERG EYE SURGERY, INC. | SAN LUIS OBISPO, CA | Mechanics Bank |
| $150,000–350,000 | LIMITED MOTORS, INC | BAKERSFIELD, CA | Mechanics Bank |
| $350,000–1 million | LINCOLN SUMMERSET ALMC LLC | ROSEVILLE, CA | Mechanics Bank |
| $150,000–350,000 | LINDSAY WILDLIFE MUSEUM | WALNUT CREEK, CA | Mechanics Bank |
| $150,000–350,000 | LINTARO LLC | SAN FRANCISCO, CA | Mechanics Bank |
| $2–5 million | LIVINGSTON MEMORIAL VISITING NURSE ASSOCIATION | VENTURA, CA | Mechanics Bank |
| $1–2 million | LLYOD APPLING, INC. | SALINAS, CA | Mechanics Bank |
| $350,000–1 million | LOCUS TECHNOLOGIES | MOUNTAIN VIEW, CA | Mechanics Bank |
| $350,000–1 million | LOGIN VSI INC. | WOBURN, MA | Mechanics Bank |
| $350,000–1 million | LOMPOC ARTIFICIAL KIDNEY CENTER LLC | LOMPOC, CA | Mechanics Bank |
| $150,000–350,000 | LONGBRANCH BERKELEY LLC | BERKELEY, CA | Mechanics Bank |
| $350,000–1 million | LOS ALTOS FARMS, LLC | AROMAS, CA | Mechanics Bank |
| $150,000–350,000 | LOS OSOS AUTO BODY, INC | LOS OSOS, CA | Mechanics Bank |
| $150,000–350,000 | LOS PADRES COUNCIL, BSA | MORRO BAY, CA | Mechanics Bank |
| $350,000–1 million | LOYALTY FARM LABOR CONTRACTOR, INC. | BAKERSFIELD, CA | Mechanics Bank |
| $150,000–350,000 | LOYALTY SECURITY GROUP INC | ALBANY, CA | Mechanics Bank |
| $1–2 million | LT FOODS AMERICAS, INC | CYPRESS, CA | Mechanics Bank |
| $350,000–1 million | LT NAPA PARTNERS LLC | NAPA, CA | Mechanics Bank |
| $150,000–350,000 | LU-AR DAIRY | HANFORD, CA | Mechanics Bank |
| $150,000–350,000 | LYNCH MARKS, LLC | BERKELEY, CA | Mechanics Bank |
| $350,000–1 million | LYNN SAFETY INC | PLEASANT HILL, CA | Mechanics Bank |
| $150,000–350,000 | LYONS ORTHODONTICS, INC | EL DORADO HILLS, CA | Mechanics Bank |
| $350,000–1 million | M & A FARMING, INC. | SANTA MARIA, CA | Mechanics Bank |
| $350,000–1 million | M MAINTENANCE CONSTRUCTION CLEAN UP & GRADING INC | OXNARD, CA | Mechanics Bank |
| $150,000–350,000 | M&R TRANSPORT | PIXLEY, CA | Mechanics Bank |
| $350,000–1 million | M-MIG CONSTRUCTION, INC. | ATWATER, CA | Mechanics Bank |
| $350,000–1 million | M.F.M.SEAFOOD | BERKELEY, CA | Mechanics Bank |
| $150,000–350,000 | M.G. SANTOS INC. | LOS BANOS, CA | Mechanics Bank |
| $150,000–350,000 | MACHINE VANTAGE | BERKELEY, CA | Mechanics Bank |
| $150,000–350,000 | MACKEY & MACKEY INSURANCE | HANFORD, CA | Mechanics Bank |