| $350,000–1 million | CONTRA COSTA CHRISTIAN SCHOOLS ASSOCIATION | WALNUT CREEK, CA | Farmers & Merchants Bank of Central California |
| $150,000–350,000 | CONTRA COSTA SLEEP CENTERS, LLC | WALNUT CREEK, CA | Fremont Bank |
| $350,000–1 million | COPA SOCCER TRAINING CENTERS LLC | WALNUT CREEK, CA | Farmers & Merchants Bank of Central California |
| $150,000–350,000 | COTHRAN & JOHNSON ACCOUNTANCY CORP | WALNUT CREEK, CA | Mechanics Bank |
| $150,000–350,000 | CRIST, FRITSCHI & PATERSON, INSURANCE AGENTS/BROKERS INC. | WALNUT CREEK, CA | Summit Bank |
| $150,000–350,000 | CSG BETTER HEARING SERVICES, INC., A PROFESSIONAL AUDIOLOGY CORP | WALNUT CREEK, CA | Zions Bank, A Division of |
| $150,000–350,000 | CYCLE SCAPE FITNESSES | WALNUT CREEK, CA | U.S. Bank, National Association |
| $1–2 million | CYPRESS HCM INC. | WALNUT CREEK, CA | Sonabank |
| $150,000–350,000 | DANIEL B. PETERS PHD A PSYCHOLOGICAL CORPORATION | WALNUT CREEK, CA | Zions Bank, A Division of |
| $150,000–350,000 | DARVISHZADEH DENTAL CORP | WALNUT CREEK, CA | Bank of America, National Association |
| $350,000–1 million | DASCH, INC. | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | DAVID GILBERT, MD | WALNUT CREEK, CA | Idaho First Bank |
| $1–2 million | DAVIDON HOMES | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | DAVIDSON & LICHT JEWELRY CORPORATION | WALNUT CREEK, CA | Fremont Bank |
| $150,000–350,000 | DAVIS & HANLEY NETWORK SOLUTIONS INC | WALNUT CREEK, CA | Bank of the West |
| $150,000–350,000 | DAY TWO INC. | WALNUT CREEK, CA | Silicon Valley Bank |
| $350,000–1 million | DBGCC, INC. | WALNUT CREEK, CA | Mortgage Capital Development Corporation |
| $150,000–350,000 | DC INC | WALNUT CREEK, CA | Wells Fargo Bank, National Association |
| $150,000–350,000 | DDN ENTERPRISES, INC. | WALNUT CREEK, CA | Pacific Enterprise Bank |
| $350,000–1 million | DECOTECH SYSTEMS INC. | WALNUT CREEK, CA | Comerica Bank |
| $150,000–350,000 | DENALECT INC | WALNUT CREEK, CA | Bank of San Francisco |
| $1–2 million | DESTINATION WEALTH MANAGEMENT | WALNUT CREEK, CA | Heritage Bank of Commerce |
| $350,000–1 million | DETTAGLIO CONSTRUCTION INC | WALNUT CREEK, CA | California Bank of Commerce |
| $350,000–1 million | DIABLO CLINICAL RESEARCH,INC. | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | DIABLO COUNTRY MAGAZINE, INC. | WALNUT CREEK, CA | Comerica Bank |
| $150,000–350,000 | DIABLO HILLS MANAGEMENT GROUP, LLC | WALNUT CREEK, CA | Western Alliance Bank |
| $150,000–350,000 | DIABLO VALLEY INSURANCE AGENCY, INC. | WALNUT CREEK, CA | Cross River Bank |
| $150,000–350,000 | DIGITIVE LLC | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | DINAPOLI CAPITAL PARTNERS LLC | WALNUT CREEK, CA | Comerica Bank |
| $1–2 million | DIRITO BROTHERS WALNUT CREEK, INC. | WALNUT CREEK, CA | Mechanics Bank |
| $150,000–350,000 | DISTRICT CAPITAL INC. | WALNUT CREEK, CA | Truist Bank d/b/a Branch Banking & Trust Co |
| $150,000–350,000 | DK ASSOCIATES, INC. | WALNUT CREEK, CA | Customers Bank |
| $150,000–350,000 | DLHA LAW GROUP | WALNUT CREEK, CA | Readycap Lending, LLC |
| $350,000–1 million | DONNELLY NELSON DEPOLO MURRAY & EFREMSKY | WALNUT CREEK, CA | Summit Bank |
| $150,000–350,000 | DORSEY, HAZELTINE, MORGAN & WYNNE, INC. | WALNUT CREEK, CA | California Bank of Commerce |
| $150,000–350,000 | DUDUM REAL ESTATE GROUP, INC. | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | EAGLE ROCK INDUSTRIES | WALNUT CREEK, CA | Cross River Bank |
| $150,000–350,000 | EAST BAY NEUROLOGY, INC. | WALNUT CREEK, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | EBX LOGISTICS INC | WALNUT CREEK, CA | First Bank |
| $150,000–350,000 | EMERALD PET PRODUCTS INC. | WALNUT CREEK, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | EMJ CAPITAL HOLDINGS CORPORATION | WALNUT CREEK, CA | Celtic Bank Corporation |
| $150,000–350,000 | ENCORE INC | WALNUT CREEK, CA | Farmers & Merchants Bank of Central California |
| $150,000–350,000 | ENGINEERED RESEARCH GROUP, INC. | WALNUT CREEK, CA | Umpqua Bank |
| $150,000–350,000 | ENVISION LANDSCAPE STUDIO INC | WALNUT CREEK, CA | Bank of America, National Association |
| $1–2 million | ERICKSEN ARBUTHNOT KILDUFF DAY & LINDSTROM INC | WALNUT CREEK, CA | City National Bank |
| $350,000–1 million | ETERNAL BEVERAGES | WALNUT CREEK, CA | Wells Fargo Bank, National Association |
| $150,000–350,000 | FAAS ENTERPRISES, LLC | WALNUT CREEK, CA | American Business Bank |
| $1–2 million | FALCON CRITICAL CARE TRANSPORT, LLC | WALNUT CREEK, CA | Live Oak Banking Company |
| $350,000–1 million | FARD ENGINEERS, INC. | WALNUT CREEK, CA | Bank of the West |
| $150,000–350,000 | FASHION BLUE INC. | WALNUT CREEK, CA | Celtic Bank Corporation |
| $2–5 million | FEHR & PEERS | WALNUT CREEK, CA | MUFG Union Bank, National Association |
| $350,000–1 million | FIRST FRUIT HOSPITALITY | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | FIRST JEN LLC | WALNUT CREEK, CA | U.S. Bank, National Association |
| $350,000–1 million | FORZATELECOM NPC, INC. | WALNUT CREEK, CA | Farmers & Merchants Bank of Central California |
| $150,000–350,000 | FOUR15 DIGITAL, INC | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | FRUITFUL VENTURES, LLC | WALNUT CREEK, CA | Comerica Bank |
| $350,000–1 million | GALPAO GAUCHO FIVE, LLC | WALNUT CREEK, CA | Wallis Bank |
| $2–5 million | GENERAL PLUMBING SUPPLY COMPANY, INC. | WALNUT CREEK, CA | Western Alliance Bank |
| $150,000–350,000 | GLYNN & FINLEY LLP | WALNUT CREEK, CA | City National Bank |
| $150,000–350,000 | GNU GROUP | WALNUT CREEK, CA | Heritage Bank of Commerce |
| $150,000–350,000 | GOALS FOR AUTISM INC | WALNUT CREEK, CA | First Home Bank |
| $150,000–350,000 | GOVAN ASSOCIATES, AN ARCHITECTURAL CORPORATION | WALNUT CREEK, CA | Bank of the West |
| $150,000–350,000 | GRAPHIC LABEL GROUP, INC. | WALNUT CREEK, CA | JPMorgan Chase Bank, National Association |
| $350,000–1 million | GTO SERVICES INC | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | GVB ALLIANCE, LLC | WALNUT CREEK, CA | Bank of America, National Association |
| $1–2 million | HALL EQUITIES GROUP | WALNUT CREEK, CA | Farmers & Merchants Bank of Central California |
| $150,000–350,000 | HARRIMAN KINYON ARCHITECTS, INC | WALNUT CREEK, CA | U.S. Bank, National Association |
| $150,000–350,000 | HEALTH JURIS, INC., A PROFESSIONAL CORPORATION | WALNUT CREEK, CA | Mechanics Bank |
| $350,000–1 million | HEALTHCARE INFORMATION MANAGEMENT, INC. | WALNUT CREEK, CA | Celtic Bank Corporation |
| $150,000–350,000 | HEATHCO INTERNATIONAL INC | WALNUT CREEK, CA | Wells Fargo Bank, National Association |
| $350,000–1 million | HF&H CONSULTANTS, LLC | WALNUT CREEK, CA | Fremont Bank |
| $350,000–1 million | HICKS CONSULTING GROUP DBA HICKS PROFESSIONAL GROUP | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | HILLSIDE COVENANT CHURCH | WALNUT CREEK, CA | Mechanics Bank |
| $150,000–350,000 | HIRSCH CLOSSON, A PROFESSIONAL LAW CORPORATION | WALNUT CREEK, CA | Pacific Enterprise Bank |
| $150,000–350,000 | HORNER LAW GROUP, P.C. | WALNUT CREEK, CA | Fremont Bank |
| $1–2 million | HOSPITALITY PURCHASING GROUP INTERNATIONAL, LLC | WALNUT CREEK, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | HRE SOLUTIONS LLC | WALNUT CREEK, CA | Atlantic Capital Bank, National Association |
| $350,000–1 million | HUGHES GILL COCHTANE TINETTI, PC | WALNUT CREEK, CA | Mechanics Bank |
| $350,000–1 million | HUTCHINSON MOTORS INC | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | IMPETUSIT | WALNUT CREEK, CA | Bank of America, National Association |
| $2–5 million | INTEGRATED PAIN MANAGEMENT MEDICAL GROUP, INC | WALNUT CREEK, CA | Live Oak Banking Company |
| $150,000–350,000 | INTERIM HEALTHCARE OF THE EAST BAY, INC. | WALNUT CREEK, CA | Wells Fargo Bank, National Association |
| $2–5 million | INVISION COMMUNICATIONS, INC. | WALNUT CREEK, CA | MUFG Union Bank, National Association |
| $350,000–1 million | ISHAQ TRADING CORPORATION | WALNUT CREEK, CA | Bank of Guam |
| $150,000–350,000 | J. STOKES & ASSOCIATES INC. | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | J.P. KING ADVISORS, INC. | WALNUT CREEK, CA | Mechanics Bank |
| $150,000–350,000 | J.T.J. INC | WALNUT CREEK, CA | First Republic Bank |
| $1–2 million | J3TFZ, INC. | WALNUT CREEK, CA | Bank of the West |
| $150,000–350,000 | JAMES & GABLE INSURANCE BROKERS INC | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | JAMLOOP LLC | WALNUT CREEK, CA | Wells Fargo Bank, National Association |
| $2–5 million | JANUS CORPORATION | WALNUT CREEK, CA | Readycap Lending, LLC |
| $150,000–350,000 | JBC FINANCIAL GROUP DBA WALNUT CREEK WEALTH MANAGEMENT | WALNUT CREEK, CA | MetaBank, National Association |
| $150,000–350,000 | JNJP CERTIFIED PUBLIC ACCOUNTANTS, INC. | WALNUT CREEK, CA | California Bank of Commerce |
| $150,000–350,000 | JOHN CUMBELICH & ASSOCIATES, INC | WALNUT CREEK, CA | City National Bank |
| $350,000–1 million | JOHN MUIR CARDIOVASCULAR MEDICAL GROUP | WALNUT CREEK, CA | Idaho First Bank |
| $150,000–350,000 | JOHN'S GENOVA DELICATESSEN INC | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | JOHNSON, HANKINS, MACDONALD, KIMBALL & CO. | WALNUT CREEK, CA | Mechanics Bank |
| $350,000–1 million | JORODA INC DBA SUNRISE BISTRO AND CATERING | WALNUT CREEK, CA | First Republic Bank |
| $150,000–350,000 | JULIA LEE DDS INC | WALNUT CREEK, CA | Bank of America, National Association |
| $150,000–350,000 | JUNIOR ACHIEVEMENT OF NORTHERN CALIFORNIA | WALNUT CREEK, CA | Bank of the West |