US: Continental Building Products (CBP) has announced the launch of a secondary public offering of 7,000,000 shares of common stock to be offered by the company's largest stockholder, an affiliate of Lone Star Funds. The underwriters will have a 30-day option from the date of the offering to purchase up to an additional 1,050,000 shares of common stock from the selling stockholder. CBP will not receive any proceeds from the sale of the shares.