| $150,000–350,000 | BEAST BUTCHER & BLOCK INC | SAINT LOUIS, MO | Scott CU |
| $150,000–350,000 | BEAUTY, LLC | SAINT LOUIS, MO | Midwest Regional Bank |
| $1–2 million | BEAUVAIS MANOR HEALTHCARE & REHAB CENTER, LLC | SAINT LOUIS, MO | Fifth Third Bank |
| $150,000–350,000 | BECK DISPOSAL INC | SAINT LOUIS, MO | PNC Bank, National Association |
| $350,000–1 million | BECKNER PAINTING MIDWEST, INC. | SAINT LOUIS, MO | Triad Bank |
| $350,000–1 million | BECS TECHNOLOGY, INC. | SAINT LOUIS, MO | Cass Commercial Bank |
| $1–2 million | BEHAVIORAL HEALTH RESPONSE, INC. | SAINT LOUIS, MO | Midwest BankCentre |
| $150,000–350,000 | BEHAVORIAL HEALTH NETWORK OF GREATER ST. LOUIS | SAINT LOUIS, MO | Commerce Bank |
| $350,000–1 million | BEHR, MCCARTER & POTTER, P C | SAINT LOUIS, MO | Midwest BankCentre |
| $150,000–350,000 | BEISHIR LOCK & SAFE, INC. | SAINT LOUIS, MO | Midland States Bank |
| $150,000–350,000 | BELL MEDICAL, INC. | SAINT LOUIS, MO | Newtek Small Business Finance, Inc. |
| $150,000–350,000 | BELLEFONTAINE GARDENS NURSING AND REHAB INC | SAINT LOUIS, MO | First Midwest Bank of the Ozarks |
| $150,000–350,000 | BELOVED STREETS OF AMERICA, INC. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BENDER & COMPANY CPA'S PC | SAINT LOUIS, MO | United Bank of Union |
| $350,000–1 million | BENEFIT PLANS PLUS LLC | SAINT LOUIS, MO | PNC Bank, National Association |
| $150,000–350,000 | BENSKIN & HOTT INTERIM TALENT SOLUTIONS, LLC | SAINT LOUIS, MO | Alliance CU |
| $1–2 million | BENSON ELECTRIC COMPANY | SAINT LOUIS, MO | Cass Commercial Bank |
| $150,000–350,000 | BENTON HOMEBUILDERS, INC. | SAINT LOUIS, MO | Midwest Regional Bank |
| $150,000–350,000 | BERGER, COHEN & BRANDT, L.C. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | BERRA SPECIALITY CONTRACTORS INC | SAINT LOUIS, MO | Commerce Bank |
| $350,000–1 million | BEST TRANSPORTATION INC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BETA GAMMA SIGMA INC | SAINT LOUIS, MO | First Bank |
| $350,000–1 million | BETALLIC LLC | SAINT LOUIS, MO | Commerce Bank |
| $350,000–1 million | BETTER FAMILY LIFE, INC. | SAINT LOUIS, MO | Southern Bank |
| $150,000–350,000 | BETTER LIVING HOME CARE | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | BETTER ODDS I LP | SAINT LOUIS, MO | BMO Bank National Association |
| $150,000–350,000 | BETTER ODDS I LP | SAINT LOUIS, MO | BMO Bank National Association |
| $2–5 million | BETTY JEAN KERR PEOPLE'S HEALTH CENTERS | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BEYOND CARE HOME SERVICES, LLC | SAINT LOUIS, MO | Midwest BankCentre |
| $350,000–1 million | BEYOND HOUSING, INC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BFC ENTERPRISES INC | SAINT LOUIS, MO | Cass Commercial Bank |
| $350,000–1 million | BG NORTH KIRKWOOD PIZZA, LLC | SAINT LOUIS, MO | Midwest Regional Bank |
| $150,000–350,000 | BGB ASSOCIATES, LLC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | BI-STATE INSULATION, INC. | SAINT LOUIS, MO | Commerce Bank |
| $350,000–1 million | BIEG PLUMBING COMPANY, INC. | SAINT LOUIS, MO | Commerce Bank |
| $350,000–1 million | BIG BROTHERS BIG SISTERS OF EASTERN MISSOURI | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | BIG RIVER RUNNING COMPANY, LLC | SAINT LOUIS, MO | BancFirst |
| $150,000–350,000 | BIGWIDESKY INC | SAINT LOUIS, MO | PNC Bank, National Association |
| $1–2 million | BILINGUAL IN-HOME ASSISTANT SERVICES | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | BILINGUAL INTERNATIONAL ASSISTANT SERVICES | SAINT LOUIS, MO | Together CU |
| $150,000–350,000 | BILL YOUNT SIGNS & ELECTRIC, INC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | BIOBALANCE HEALTH LLC | SAINT LOUIS, MO | PNC Bank, National Association |
| $350,000–1 million | BIOSTL | SAINT LOUIS, MO | Commerce Bank |
| $1–2 million | BIOTAB, LLC | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | BIOTECH X-RAY INC | SAINT LOUIS, MO | First Bank |
| $150,000–350,000 | BIRENBAUM AND ASSOCIATES INC | SAINT LOUIS, MO | Cass Commercial Bank |
| $150,000–350,000 | BIRNER MEMPHIS, LLC | SAINT LOUIS, MO | Triad Bank |
| $1–2 million | BITRODE CORPORATION | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | BLACK TWIG MARKETING AND COMMUNICATIONS LLC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | BLACKLINE LLC | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | BLACKWELL CONTRACTING LLC | SAINT LOUIS, MO | Midwest Regional Bank |
| $150,000–350,000 | BLESSED TERESA OF CALCUTTA CATHOLIC CHURCH | SAINT LOUIS, MO | Peoples National Bank, National Association |
| $350,000–1 million | BLITZ BARDGETT & DEUTSCH LC | SAINT LOUIS, MO | PNC Bank, National Association |
| $150,000–350,000 | BLIV INC. | SAINT LOUIS, MO | St. Louis Bank |
| $2–5 million | BLR PROPERTIES, LLC | SAINT LOUIS, MO | Triad Bank |
| $150,000–350,000 | BLUE FISH PEDIATRICS LLC | SAINT LOUIS, MO | Bank of America, National Association |
| $350,000–1 million | BMC MANAGEMENT, INC. | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BMC STONE, LLC | SAINT LOUIS, MO | UMB Bank, National Association |
| $1–2 million | BMS HOLDINGS INC. | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BO-GESS ENTERPRISES INC. | SAINT LOUIS, MO | First Bank |
| $150,000–350,000 | BOB RAEKER PLUMBING, INC. | SAINT LOUIS, MO | Peoples National Bank, National Association |
| $150,000–350,000 | BOGGS, AVELLINO, LACH & BOGGS, LLC | SAINT LOUIS, MO | Royal Banks of Missouri |
| $1–2 million | BOHN AND DAWSON, INC. | SAINT LOUIS, MO | Bank of Washington |
| $1–2 million | BOMMARITO CHEVROLET, INC | SAINT LOUIS, MO | Simmons Bank |
| $1–2 million | BONZAI EXPRESS OF ST. LOUIS, INC. | SAINT LOUIS, MO | Peoples National Bank, National Association |
| $150,000–350,000 | BOWERSOX INSURANCE AGENCY COMPANY | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | BOWOOD FARMS INC | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | BOX HILL GROUP LLC | SAINT LOUIS, MO | CIBC Bank USA |
| $1–2 million | BOY SCOUTS OF AMERICA, INC 312 | SAINT LOUIS, MO | Bank of Belleville |
| $350,000–1 million | BOYER FIRE PROTECTION, LLC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | BOYLE BRASHER LLC | SAINT LOUIS, MO | Commerce Bank |
| $2–5 million | BRADO CUNEO NOLLAU, LLC | SAINT LOUIS, MO | CrossFirst Bank |
| $350,000–1 million | BRAHMS CONSTRUCTION, LLC | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BRAKE LANDSCAPING & LAWNCARE I | SAINT LOUIS, MO | Southern Bank |
| $150,000–350,000 | BRANCH METAL PROCESSING CORPORATION | SAINT LOUIS, MO | First Bank |
| $350,000–1 million | BRANDONVIEW, LLC | SAINT LOUIS, MO | Midwest Regional Bank |
| $350,000–1 million | BRAUER SUPPLY COMPANY | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | BRAUN CONSTRUCTION MGMT SERVICES INC | SAINT LOUIS, MO | FCB Banks |
| $150,000–350,000 | BRAY-MOR, LLC | SAINT LOUIS, MO | Triad Bank |
| $150,000–350,000 | BRECKENRIDGE JEFFERSON COUNTY, INC | SAINT LOUIS, MO | UMB Bank, National Association |
| $350,000–1 million | BRECKENRIDGE MATERIAL COMPANY, INC | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BRECKENRIDGE OF ILLINOIS, LLC | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | BREIHAN PROPERTIES LLC | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | BRENTWOOD PEDIATRICS, PC | SAINT LOUIS, MO | Sterling Bank |
| $150,000–350,000 | BRENTWOOD PLASTICS | SAINT LOUIS, MO | UMB Bank, National Association |
| $350,000–1 million | BRENTWOOD TRAVEL SERVICE, INC. | SAINT LOUIS, MO | Bank of America, National Association |
| $1–2 million | BREX, INC. | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | BRIAN G. TOENNIES & ASSOCIATES, P.C. | SAINT LOUIS, MO | Carrollton Bank |
| $350,000–1 million | BRIDGES COMMUNITY SUPPORT SERVICES INC | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | BRIDGEWATER COMMUNITIES, INC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BRIGHT & ASSOCIATES INC | SAINT LOUIS, MO | Commercial Bank |
| $150,000–350,000 | BRIGHTON ELECTRIC, LLC | SAINT LOUIS, MO | Triad Bank |
| $350,000–1 million | BRINKER & DOYEN L.L.P. | SAINT LOUIS, MO | The Central Trust Bank |
| $350,000–1 million | BRK ELECTRICAL CONTRACTORS, LLC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | BROADWAY FORD TRUCK SALES INC | SAINT LOUIS, MO | Midwest BankCentre |
| $2–5 million | BROADWAY RESTAURANT GROUP, LLC | SAINT LOUIS, MO | Fifth Third Bank |
| $350,000–1 million | BROKERAGE UNLIMITED, INC. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BROTHERS GROUP, INC. | SAINT LOUIS, MO | UMB Bank, National Association |
| $2–5 million | BROWN & CROUPPEN, ATTORNEYS AT LAW, A PROFESSIONAL CORPORATI | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | BROWN & BROWN | SAINT LOUIS, MO | U.S. Bank, National Association |