| $1–2 million | P&P RESTAURANTS INC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | P'SPHETTI'S, INC. | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | P.J. PRIFTI, INC. | SAINT LOUIS, MO | Commercial Bank |
| $2–5 million | P.M.A. HOLDINGS, LLC | SAINT LOUIS, MO | Midwest BankCentre |
| $150,000–350,000 | P.S. KIDS, LLC | SAINT LOUIS, MO | Montgomery Bank |
| $1–2 million | PACE PROPERTIES, INC | SAINT LOUIS, MO | The Central Trust Bank |
| $2–5 million | PACKAGING CONCEPTS INC | SAINT LOUIS, MO | Carrollton Bank |
| $150,000–350,000 | PADBERG, CORRIGAN AND APPELBAUM | SAINT LOUIS, MO | Southern Bank |
| $150,000–350,000 | PAGE LAW LLC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | PAINTSMITHS OF MISSOURI, INC. | SAINT LOUIS, MO | Royal Banks of Missouri |
| $350,000–1 million | PALM INTEGRATIVE HEALTH SAINT LOUIS LLC | SAINT LOUIS, MO | St. Louis Bank |
| $150,000–350,000 | PALM MANAGEMENT COMPANY LLC | SAINT LOUIS, MO | St. Louis Bank |
| $350,000–1 million | PANDJIRIS INC | SAINT LOUIS, MO | Cass Commercial Bank |
| $350,000–1 million | PANGEA, INC. | SAINT LOUIS, MO | Peoples National Bank, National Association |
| $350,000–1 million | PAPPY'S SMOKEHOUSE, LLC | SAINT LOUIS, MO | American Bank of Freedom |
| $150,000–350,000 | PAPPY'S SOUTH, LLC | SAINT LOUIS, MO | American Bank of Freedom |
| $150,000–350,000 | PARADIGM FINANCIAL ADVISORS, L.L.C. | SAINT LOUIS, MO | The Central Trust Bank |
| $150,000–350,000 | PARAMOUNT CONVENTION SERVICES, INC | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | PARAQUAD | SAINT LOUIS, MO | Regions Bank |
| $1–2 million | PARC PROVENCE MANAGEMENT LLC | SAINT LOUIS, MO | Midland States Bank |
| $1–2 million | PARENTS AS TEACHERS NATIONAL CENTER, INC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PARTEE ASSOCIATES, L.L.C. DBA PROPERTY ASSESSMENT REVIEW | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | PARTNERSHIP FOR YOUTH INC | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | PARTNERSHIP PROPERTY MANAGEMENT LLC | SAINT LOUIS, MO | Royal Banks of Missouri |
| $150,000–350,000 | PATHOLOGY ASSOCIATES PC | SAINT LOUIS, MO | Great Southern Bank |
| $350,000–1 million | PATRIOT SUNROOMS INC | SAINT LOUIS, MO | Cass Commercial Bank |
| $150,000–350,000 | PAUL ROTTLER, MD, PC | SAINT LOUIS, MO | Commerce Bank |
| $5–10 million | PAULO PRODUCTS COMPANY | SAINT LOUIS, MO | The Central Trust Bank |
| $1–2 million | PAYNE FAMILY HOMES, LLC | SAINT LOUIS, MO | Midwest BankCentre |
| $1–2 million | PD INTERNATIONAL HOLDINGS, LLC | SAINT LOUIS, MO | First Merchants Bank |
| $150,000–350,000 | PD MANAGEMENT I, LP | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PEACEMAKER, LLC | SAINT LOUIS, MO | First Mid Bank & Trust, National Association |
| $150,000–350,000 | PEARL STREET ELECTRIC, LLC | SAINT LOUIS, MO | Carrollton Bank |
| $2–5 million | PECKHAM GUYTON ALBERS & VIETS INC | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | PEGASUS, INC | SAINT LOUIS, MO | The Central Trust Bank |
| $350,000–1 million | PELOPIDAS, L.L.C. | SAINT LOUIS, MO | Fifth Third Bank |
| $5–10 million | PENNEX ALUMINUM COMPANY LLC | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | PENNY WINDOW CO | SAINT LOUIS, MO | PNC Bank, National Association |
| $350,000–1 million | PENTA ENGINEERING CORPORATION | SAINT LOUIS, MO | BMO Bank National Association |
| $150,000–350,000 | PENUEL ENTERPRISES LLC | SAINT LOUIS, MO | Bank of Springfield |
| $150,000–350,000 | PEOPLE'S COMMUNITY ACTION CORPORATION | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | PERENNIAL PARTNERS LLC | SAINT LOUIS, MO | First Mid Bank & Trust, National Association |
| $150,000–350,000 | PERFECT HANDS IN HOME HEALTH CARE AND SERVICES INC | SAINT LOUIS, MO | Regions Bank |
| $150,000–350,000 | PERFORMANCE ROOFING INC | SAINT LOUIS, MO | First Bank |
| $150,000–350,000 | PERKCOS UNLIMITED | SAINT LOUIS, MO | Bank of America, National Association |
| $150,000–350,000 | PESTSHIELD, LLC | SAINT LOUIS, MO | Triad Bank |
| $350,000–1 million | PETER & PAUL COMMUNITY SERVICES | SAINT LOUIS, MO | PNC Bank, National Association |
| $350,000–1 million | PETERS-EICHLER MECHANICAL | SAINT LOUIS, MO | Triad Bank |
| $150,000–350,000 | PETRO LOGISTICS, LLC | SAINT LOUIS, MO | The Bank of Houston |
| $350,000–1 million | PG-STL INC. | SAINT LOUIS, MO | Great Southern Bank |
| $150,000–350,000 | PHARMACY FRANCHISEES AND OWNERS ASSOC | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | PHARMACY FRANCHISEES AND OWNERS ASSOC | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | PHARMALOOP LLC | SAINT LOUIS, MO | First Community CU |
| $150,000–350,000 | PHILIBERT SECURITY SYSTEMS INC | SAINT LOUIS, MO | West Community CU |
| $150,000–350,000 | PHILLIPS CONCRETE SERVICES LLC | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | PHILLIPS LISTENS, INC. | SAINT LOUIS, MO | The Central Trust Bank |
| $350,000–1 million | PHOTOS UNLIMITED, LLC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PHS ENTERPRISES, INC. | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | PHYSICIAN DATA MANAGEMENT, LLC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PI AT THE MX LLC | SAINT LOUIS, MO | St. Louis Bank |
| $150,000–350,000 | PIC THE GIFT LLC | SAINT LOUIS, MO | Carrollton Bank |
| $1–2 million | PIERIANDX, INC. | SAINT LOUIS, MO | Newtek Small Business Finance, Inc. |
| $350,000–1 million | PIETOSO INC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PIETRO'S RESTAURANT INC. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PINNACLE CONTRACTING INC. | SAINT LOUIS, MO | St. Louis Bank |
| $150,000–350,000 | PINNACLE IMPORTS, LLC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PINNACLE POWER CORPORATION | SAINT LOUIS, MO | Bank of Washington |
| $350,000–1 million | PITTSBURGH PIPE & SUPPLY CORP. | SAINT LOUIS, MO | Fifth Third Bank |
| $150,000–350,000 | PITZER SNODGRASS, P.C. | SAINT LOUIS, MO | Triad Bank |
| $350,000–1 million | PK CONSTRUCTION, LLC | SAINT LOUIS, MO | Simmons Bank |
| $2–5 million | PLACES FOR PEOPLE, INCORPORATED | SAINT LOUIS, MO | UMB Bank, National Association |
| $1–2 million | PLANNED PARENTHOOD OF THE ST. LOUIS REGION AND SOUTHWEST MIS | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PLAYFUL LEARNING LLC | SAINT LOUIS, MO | St. Louis Bank |
| $2–5 million | PLUMBERS SUPPLY COMPANY OF ST. LOUIS | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | PMMO ST. LOUIS, LLC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | PNMG INC | SAINT LOUIS, MO | U.S. Bank, National Association |
| $150,000–350,000 | POELKER COMMERCIAL SERVICES, INC. | SAINT LOUIS, MO | Montgomery Bank |
| $150,000–350,000 | POHLMAN LLC | SAINT LOUIS, MO | Bank of America, National Association |
| $1–2 million | POHLMAN REPORTING COMPANY LLC | SAINT LOUIS, MO | The Huntington National Bank |
| $350,000–1 million | POLARIS SOFTWARE LLC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | POLARIS SOLUTIONS LLC | SAINT LOUIS, MO | PNC Bank, National Association |
| $150,000–350,000 | POLICYENGAGE, LLC | SAINT LOUIS, MO | Cross River Bank |
| $150,000–350,000 | PONY CORPORATION | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | POSITIVE IMPACTS, INC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | POWER POST | SAINT LOUIS, MO | Bank Star |
| $1–2 million | POWER UP ELECTRICAL CONTRACTORS LLC | SAINT LOUIS, MO | First Bank |
| $150,000–350,000 | POWERS GROUP INC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PRECISION OFFICE FURNITURE INSTALLATION, LLC | SAINT LOUIS, MO | UMB Bank, National Association |
| $350,000–1 million | PRECISION OFFICE INSTALLERS, INC., A MISSOURI CORPORATION | SAINT LOUIS, MO | UMB Bank, National Association |
| $1–2 million | PRECISION PRACTICE MANAGEMENT, INC. | SAINT LOUIS, MO | UMB Bank, National Association |
| $150,000–350,000 | PRECISION PROTOTYPING AND MANUFACTURING | SAINT LOUIS, MO | Midwest BankCentre |
| $150,000–350,000 | PRECISION SCALE AND CONTROLS, INC | SAINT LOUIS, MO | Commerce Bank |
| $150,000–350,000 | PREFERRED RESOURCE NETWORK, INC. | SAINT LOUIS, MO | U.S. Bank, National Association |
| $350,000–1 million | PREFERRED RESOURCES, INC. | SAINT LOUIS, MO | The Central Trust Bank |
| $150,000–350,000 | PREMIER RENTALS, L.L.C. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PREVENTED | SAINT LOUIS, MO | First Bank |
| $350,000–1 million | PREZALTER SERVICES, LLC | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $150,000–350,000 | PRIDE CLEANING & RESTORATION INC | SAINT LOUIS, MO | Associated Bank, National Association |
| $350,000–1 million | PRIMARY SYSTEMS INC. | SAINT LOUIS, MO | Enterprise Bank & Trust |
| $350,000–1 million | PRINTFLEX GRAPHICS, INC. | SAINT LOUIS, MO | Enterprise Bank & Trust |