| $350,000–1 million | IRWIN INTERIORS SYSTEM, INC. | TRAFFORD, PA | S & T Bank |
| $150,000–350,000 | ISHMAN PLASTIC AND WOOD CUTTING, INC. | BROOKVILLE, PA | S & T Bank |
| $150,000–350,000 | IUP RESEARCH INSTITUTE | INDIANA, PA | S & T Bank |
| $150,000–350,000 | IWP NEW ALBANY, LLC | AKRON, OH | S & T Bank |
| $150,000–350,000 | J & J ENTERPRISES OF WESTERVILLE, INC. | SUNBURY, OH | S & T Bank |
| $350,000–1 million | J M PAVING INC | EXPORT, PA | S & T Bank |
| $350,000–1 million | J.J. GUMBERG CO. | PITTSBURGH, PA | S & T Bank |
| $150,000–350,000 | J.M. LEASING CO. | CLARION, PA | S & T Bank |
| $150,000–350,000 | JACK'S AUTO PARTS INC. | SARVER, PA | S & T Bank |
| $150,000–350,000 | JACOB ENTERPRISES, INCORPORATED | MONROEVILLE, PA | S & T Bank |
| $350,000–1 million | JAMES DANIELS | GREENSBURG, PA | S & T Bank |
| $150,000–350,000 | JAMES O. BOWER INSURANCE, INC. | MECHANICSBURG, PA | S & T Bank |
| $150,000–350,000 | JEFFERSON PAVING CORP | BROOKVILLE, PA | S & T Bank |
| $150,000–350,000 | JEREMIAH ELDREDGE SEPTIC MANAGEMENT SERVICES, INC. | COATESVILLE, PA | S & T Bank |
| $350,000–1 million | JIM SHORKEY 1 WHITE OAK, LLC | WHITE OAK, PA | S & T Bank |
| $350,000–1 million | JIM SHORKEY NORTH HILLS 1 INC | PITTSBURGH, PA | S & T Bank |
| $350,000–1 million | JIM SHORKEY WEXFORD 1 LLC | WEXFORD, PA | S & T Bank |
| $350,000–1 million | JIM SHORKEY YOUNGSTOWN 1, LLC | YOUNGSTOWN, OH | S & T Bank |
| $1–2 million | JKM TRADING COMPANY | PITTSBURGH, PA | S & T Bank |
| $350,000–1 million | JO-MAR TEXTILES, INC. | PHILADELPHIA, PA | S & T Bank |
| $150,000–350,000 | JOHN VISNIC TRUCKING, LLC | MURRYSVILLE, PA | S & T Bank |
| $150,000–350,000 | JOHNSON SUBARU, INC. | DU BOIS, PA | S & T Bank |
| $150,000–350,000 | JOSEPH DIMATTEO INC. | OAKMONT, PA | S & T Bank |
| $1–2 million | JPL VIDEO PRODUCTIONS INC | HARRISBURG, PA | S & T Bank |
| $150,000–350,000 | JPR ACQUISITION COMPANY | BRUNSWICK, OH | S & T Bank |
| $350,000–1 million | JSB HOLDINGS INC | LATROBE, PA | S & T Bank |
| $1–2 million | JUICE TECHNOLOGIES INC | COLUMBUS, OH | S & T Bank |
| $350,000–1 million | K & A APPLIANCE INC | LANCASTER, PA | S & T Bank |
| $1–2 million | K & D FACTORY SERVICE INC | HARRISBURG, PA | S & T Bank |
| $350,000–1 million | KAHLE'S KITCHENS, INC. | LEEPER, PA | S & T Bank |
| $1–2 million | KAJARUDAN INC. | IRWIN, PA | S & T Bank |
| $150,000–350,000 | KAYNE LAW GROUP CO. P.A. | COLUMBUS, OH | S & T Bank |
| $150,000–350,000 | KC CRAFT LLC | PITTSBURGH, PA | S & T Bank |
| $1–2 million | KEGEL'S PRODUCE, INC. | LANCASTER, PA | S & T Bank |
| $350,000–1 million | KELLEY BROTHERS ROOFING, INC. | FAIRFIELD, OH | S & T Bank |
| $150,000–350,000 | KENNEDY-ZEUS, INC. | MC KEES ROCKS, PA | S & T Bank |
| $350,000–1 million | KENSINGTON HPP, INC. | VANDERGRIFT, PA | S & T Bank |
| $350,000–1 million | KEYSTONE SURVEYING & MAPPING INC. | BLAIRSVILLE, PA | S & T Bank |
| $150,000–350,000 | KEYSTONE WATERPROOFING INC | LATROBE, PA | S & T Bank |
| $350,000–1 million | KING'S MEDICAL GROUP ESOP | HUDSON, OH | S & T Bank |
| $150,000–350,000 | KINTON CARBIDE, INC. | EXPORT, PA | S & T Bank |
| $350,000–1 million | KISKIMINETAS SPRINGS SCHOOL | SALTSBURG, PA | S & T Bank |
| $150,000–350,000 | KLING BROS INSURANCE LLC | YORK, PA | S & T Bank |
| $350,000–1 million | KNICHEL LOGISTICS, INC. | GIBSONIA, PA | S & T Bank |
| $350,000–1 million | KOVALCHICK CORPORATION | INDIANA, PA | S & T Bank |
| $150,000–350,000 | KRIGGER & COMPANY, INC | GIBSONIA, PA | S & T Bank |
| $1–2 million | KUKURIN CONTRACTING, INC. | EXPORT, PA | S & T Bank |
| $150,000–350,000 | KURZWEG TAVERN COMPANY | PITTSBURGH, PA | S & T Bank |
| $150,000–350,000 | L&A CONSTRUCTIVE DEVELOPMENT II, LLC | WESTERVILLE, OH | S & T Bank |
| $350,000–1 million | L.A. BROKERS, INC. | MURRYSVILLE, PA | S & T Bank |
| $1–2 million | L.J. ASSOCIATES, INC. | LATROBE, PA | S & T Bank |
| $2–5 million | LA ROCHE UNIVERSITY | PITTSBURGH, PA | S & T Bank |
| $1–2 million | LAKEVIEW FORGE ACQUISITION LLC | CRANBERRY TOWNSHIP, PA | S & T Bank |
| $2–5 million | LANCASTER COUNTY MOTORS INC. | EAST PETERSBURG, PA | S & T Bank |
| $150,000–350,000 | LANCASTER OTOLARYNGOLOGY, LLP | LANCASTER, PA | S & T Bank |
| $150,000–350,000 | LANDSCAPING BY GAFFNEY, INC | GLENMOORE, PA | S & T Bank |
| $350,000–1 million | LAPP ELECTRICAL SERVICE, INC. | LANCASTER, PA | S & T Bank |
| $350,000–1 million | LATROBE FORD, INC. | LATROBE, PA | S & T Bank |
| $150,000–350,000 | LATROBE FOUNDRY MACHINE & SUPPLY CO | LATROBE, PA | S & T Bank |
| $350,000–1 million | LAUREL EYE CLINIC, LLP | BROOKVILLE, PA | S & T Bank |
| $350,000–1 million | LAUREL INDUSTRIAL FABRIC ENTERPRISES INC | VANDERGRIFT, PA | S & T Bank |
| $150,000–350,000 | LAUREL LASER & SURGERY CENTER, LP | BROOKVILLE, PA | S & T Bank |
| $150,000–350,000 | LAUREL SAND & STONE, INC. | LIGONIER, PA | S & T Bank |
| $150,000–350,000 | LAWN SENSE INC. | PITTSBURGH, PA | S & T Bank |
| $350,000–1 million | LAWRENCE PLUMBING LLC | VANDERGRIFT, PA | S & T Bank |
| $1–2 million | LE BUS BAKERY INC | KING OF PRUSSIA, PA | S & T Bank |
| $350,000–1 million | LEAFGUARD OF LAKE ERIE, INC. | ERIE, PA | S & T Bank |
| $350,000–1 million | LEE THOMPSON & FAWCETT COMPANY | PENN, PA | S & T Bank |
| $1–2 million | LEGACY FOODS, LLC | JOPPA, MD | S & T Bank |
| $1–2 million | LENNON, SMITH, SOULERET ENGINEERING INC | CORAOPOLIS, PA | S & T Bank |
| $150,000–350,000 | LEVEL GREEN PLUMBING & HEATING LLC | TRAFFORD, PA | S & T Bank |
| $150,000–350,000 | LFG OPERATING LLC | SPENCERPORT, NY | S & T Bank |
| $350,000–1 million | LFS & LPS, LTD | READING, PA | S & T Bank |
| $150,000–350,000 | LIBERTY PRESSED METALS LLC | KERSEY, PA | S & T Bank |
| $350,000–1 million | LIFE'SWORK OF WESTERN PA | PITTSBURGH, PA | S & T Bank |
| $150,000–350,000 | LINDEMUTH EXCAVATING, INC. | BROOKVILLE, PA | S & T Bank |
| $350,000–1 million | LINLO REALTY INC | CAMP HILL, PA | S & T Bank |
| $2–5 million | LMC INDUSTRIAL CONTRACTORS, INC. | AVON, NY | S & T Bank |
| $150,000–350,000 | LOCUST RIDGE HEALTHCARE, LLC | WILLIAMSBURG, OH | S & T Bank |
| $150,000–350,000 | LRG CORPORATION | JEANNETTE, PA | S & T Bank |
| $1–2 million | LSP TECHNOLOGIES | DUBLIN, OH | S & T Bank |
| $150,000–350,000 | LUCIANO'S RESTAURANT, INC. | WHITE OAK, PA | S & T Bank |
| $2–5 million | LYDEN OIL COMPANY | WALBRIDGE, OH | S & T Bank |
| $2–5 million | M SIMON ZOOK CO | HONEY BROOK, PA | S & T Bank |
| $350,000–1 million | M. BETTERS CONSTRUCTION, INC. | ALIQUIPPA, PA | S & T Bank |
| $150,000–350,000 | M.V.P. LEASING, INC. | EXPORT, PA | S & T Bank |
| $350,000–1 million | MADER MACHINE CO., INC. | LAGRANGE, OH | S & T Bank |
| $150,000–350,000 | MADISON ACQUISITIONS LLC | PITTSBURGH, PA | S & T Bank |
| $150,000–350,000 | MAGILL'S AUTO SERVICE, INC. | PITCAIRN, PA | S & T Bank |
| $150,000–350,000 | MALONE ENTERPRISES, LLC | GLEN CAMPBELL, PA | S & T Bank |
| $150,000–350,000 | MALVERN RESTAURANT ASSOCIATES INC | MALVERN, PA | S & T Bank |
| $350,000–1 million | MANOR HOUSE KITCHENS, INC. | GREENSBURG, PA | S & T Bank |
| $350,000–1 million | MARSULA ELECTRIC, INC | GREENSBURG, PA | S & T Bank |
| $150,000–350,000 | MARTINS STEEL FABRICATION, INC | NEW FRANKLIN, OH | S & T Bank |
| $150,000–350,000 | MARTY'S DIESEL GARAGE, LLC | HOMER CITY, PA | S & T Bank |
| $150,000–350,000 | MASTER WATER CONDITIONING CORPORATION | POTTSTOWN, PA | S & T Bank |
| $350,000–1 million | MATTIONI, LTD | PHILADELPHIA, PA | S & T Bank |
| $150,000–350,000 | MAVRAJ LLC | KENNETT SQUARE, PA | S & T Bank |
| $150,000–350,000 | MAX 18, LLC | TAMPA, FL | S & T Bank |
| $350,000–1 million | MAXIMUS 909 OPERATIONS, LLC | LOCKPORT, NY | S & T Bank |