Mannatech, Incorporated (NASDAQ: MTEX), the leading innovator and provider of nutritional supplements and skin care products based on Real FoodTechnology® solutions, announced changes today in its Senior Executive Office (SEO) and corporate structure. Dr. Robert A. Sinnott has been named CEO, B. Keith Clark has been named Chief Operating Officer and Al Bala has been named Executive Vice President, Sales and Marketing. These three executives make up Mannatech’s Senior Executive Office (SEO). Dr. Robert A. Sinnott, CEO and Chief Science Officer, joined Mannatech in 2005 as Chief Science Officer, and added the responsibilities of co-CEO in 2009. Dr. Sinnott is a 20-year veteran of technical organizations spanning government, academic and commercial enterprises, and has spent the last 13 years working directly in the dietary supplement industry. Sinnott earned his M.N.S. degree in Natural Science, and a Ph.D. degree in Plant Sciences from Arizona State University. B. Keith Clark has been named Chief Operating Officer, a new position for the company, in addition to his role as Chief Legal Officer. Mr. Clark joined Mannatech in 2006 as Senior Vice President and General Counsel, and most recently held the position of Executive Vice President and Chief Legal Officer. Prior to his time at Mannatech, Mr. Clark oversaw legal and organizational management for various commercial organizations. Mr. Clark earned an M.B.A. and his Juris Doctor from the University of Texas at Austin. In addition, Mr. Clark is a member of the State Bar of Texas and also serves on the board of directors of several nonprofit organizations. Al Bala, Executive Vice President, Sales & Marketing, will lead the company’s efforts to streamline and unify its sales and marketing efforts to even better support the company’s independent sales Associates. Mr. Bala joined Mannatech in 2007 as Senior Vice President of Sales, and has since been at the center of the company’s global sales and marketing efforts. Mr. Bala has worked within the direct sales industry for 30 years in North America and in more than 60 global markets. From 1992 – 2006, he served as Chief Operating Officer of Britt Worldwide, LLC, one of the largest independent Amway network marketing organizations.