F.N.B. Corporation Announces Public Offering of 4.5 Million Shares of Its Common Stock (FNB)

F.N.B. Corporation FNB announced today that it is commencing a registered public offering of 4.5 million shares of its common stock.  The offering is being made in conjunction with F.N.B. Corporation's inclusion in the Standard & Poor's SmallCap 600 Index after the market closes on May 13, 2011.  Keefe, Bruyette & Woods and RBC Capital Markets, LLC will act as joint book-running managers.  The shares will be issued pursuant to a preliminary prospectus supplement filed today as part of an existing shelf registration statement filed with the Securities and Exchange Commission on Form S-3.  F.N.B. intends to grant the underwriters an option to purchase up to an additional 15% of the shares sold to cover over-allotments, if any.  F.N.B. expects the net proceeds from the offering will be used for general corporate purposes.