Brief: Mannatech Q1 earnings per share $0.40
May 12 (Reuters) - Mannatech Inc MTEX.O : * Reports first quarter 2015 financial results * Q1 earnings per share $0.40 * Q1 sales rose 3.3 percent to $44.4 million * Source text for Eikon ID:nBwwnrPRa * Further company coverage MTEX.O ((Bengaluru Newsroom; +1 646 223 8780))