FNB Corporation is a diversified financial services corporation based in Pittsburgh, Pennsylvania, and the holding company for its largest subsidiary, First National Bank. As of July 17, 2024, FNB has total assets of nearly $48 billion.

FNB's market coverage spans several major metropolitan areas, including Pittsburgh, Pennsylvania; Baltimore, Maryland; Cleveland, Ohio; Washington, D.C.; Charlotte, Raleigh, Durham and the Piedmont Triad (Winston-Salem, Greensboro and High Point) in North Carolina; and Charleston, South Carolina, with approximately 350 offices.