F.N.B. Corporation (NYSE:FNB), parent company of First National Bank of Pennsylvania, announced today that it formally named Pittsburgh, PA, as its corporate headquarters. F.N.B. Corporation has maintained a regional headquarters at the Company's North Shore Campus since 2004. Its growth in Pittsburgh, the Company's largest market, has significantly contributed to the Company's $14.5 billion in assets, and with this announcement will become the 2nd largest bank holding company based in Pittsburgh.