GNC Holdings (NYSE:GNC) announces a 10M share secondary offering of its Class A common stock. The shares to be sold are by Ares Corporate Opportunities Fund II and Ontario Teachers' Pension Plan Board. The Company is neither issuing nor selling any shares in the offering. In addition, GNC says it's agreed to repurchase 6M shares of its Class A common stock directly from Ares immediately following the closing of the offering. Goldman is the sole underwriter. Shares +1.4% AH.