X0306 4/A 2015-09-17 2015-09-17 0 0000037808 FNB CORP/FL/ FNB 0001513244 Williams Jr John C ONE F.N.B. BLVD HERMITAGE PA 16148 0 1 0 0 Executive Vice President Common Stock 2015-09-17 4 F 0 11.8556 13.02 D 38793.8845 D Effective September 4, 2015, Mr. Williams retired from First National Bank and was previously awarded shares on September 4, 2015, which were in the F.N.B. Corporation Dividend Reinvestment Plan. On September 15, 2015, 37.2929 shares were acquired and immediately vested. This is an amended Form 4 due to previously stating an incorrect total of shares owned following the transaction. /s/John C. Williams, Jr. 2016-02-10