| $350,000–1 million | KENSINGTON HPP INC. | Vandergrift, PA | S & T Bank |
| $350,000–1 million | KENSINGTON HPP, INC. | VANDERGRIFT, PA | S & T Bank |
| $350,000–1 million | KEYSTONE PROFILES LTD. | Beaver Falls, PA | S & T Bank |
| $350,000–1 million | KEYSTONE SURVEYING AND MAPPING INC. | BLAIRSVILLE, PA | S & T Bank |
| $150,000–350,000 | KEYSTONE WATERPROOFING INC | LATROBE, PA | S & T Bank |
| $150,000–350,000 | KIMBERLY LUCAS | Sigel, 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 |
| $150,000–350,000 | KINTON CARBIDE, INC. | EXPORT, PA | S & T Bank |
| $1–2 million | KISKIMINETAS SPRINGS SCHOOL | Saltsburg, 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 | 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 | KURZWEG TAVERN COMPANY | PITTSBURGH, PA | S & T Bank |
| $150,000–350,000 | L & A CONSTRUCTIVE DEVELOPMENT II LLC | Westerville, OH | 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 |
| $150,000–350,000 | L.R.G. CORPORATION | Jeannette, 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 |
| $1–2 million | LAUREL EYE CLINIC LLP | Brookville, PA | S & T Bank |
| $1–2 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 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 | LAUREL SAND & STONE, INC. | LIGONIER, PA | S & T Bank |
| $150,000–350,000 | LAWN SENSE INC | Pittsburgh, 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 |
| $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 |
| $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 |
| $150,000–350,000 | 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 |
| $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 |
| $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 |
| $350,000–1 million | LLANERCH COUNTRY CLUB | Havertown, 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 | LOS TRES AMIGOS INC. | Monroeville, PA | S & T Bank |
| $150,000–350,000 | LRG CORPORATION | JEANNETTE, PA | S & T Bank |
| $1–2 million | LSP TECHNOLOGIES, INC. | DUBLIN, OH | S & T Bank |
| $1–2 million | LSP TECHNOLOGIES, INC. | 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 | 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.D. SLEPPY CONSTRUCTION INC | Penn Run, 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. | Monroeville, 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 | MALVERN RESTAURANTS ASSOCIATES INC. | Malvern, PA | S & T Bank |
| $350,000–1 million | MANOR HOUSE KITCHENS INC. | Greensburg, PA | S & T Bank |
| $350,000–1 million | MANOR HOUSE KITCHENS, INC. | GREENSBURG, PA | S & T Bank |
| $150,000–350,000 | MANOR METALS INC. | Kittanning, PA | S & T Bank |
| $350,000–1 million | MARSULA ELECTRIC INC. | Greensburg, PA | S & T Bank |
| $350,000–1 million | MARSULA ELECTRIC, INC | GREENSBURG, PA | S & T Bank |
| $350,000–1 million | MARTIN PAINTING AND COATING COMPANY | Grove City, OH | S & T Bank |
| $150,000–350,000 | MARTIN'S STEEL FABRICATION | NEW FRANKLIN, OH | S & T Bank |
| $350,000–1 million | 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 | 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 | MATRIX IMAGING SOLUTIONS LLC | Sanborn, NY | S & T Bank |
| $350,000–1 million | MATTHEWS WALL ANCHOR & WATERPROOFING SERVICES LLC | Beaver Falls, PA | S & T Bank |
| $150,000–350,000 | MATTHEWS WALL ANCHOR & WATERPROOFING SERVICES, LLC | BEAVER FALLS, PA | S & T Bank |
| $150,000–350,000 | MATTIONI LTD. | Philadelphia, PA | S & T Bank |
| $350,000–1 million | MATTIONI, LTD | PHILADELPHIA, PA | S & T Bank |
| $150,000–350,000 | MAVRAJLLC | KENNETT SQUARE, PA | S & T Bank |
| $150,000–350,000 | MAX 18 LLC | Tampa, FL | 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 |