COPPELL, TX -- (MARKET WIRE) -- 05/16/2006 -- Mannatech, Inc. (NASDAQ: MTEX) today announced the resignation of Bettina S. Simon, Senior Vice President & Chief Legal Officer, effective June 1, 2006. Ms. Simon is leaving the company to pursue other interests that will allow her to spend more time with her family. She will maintain a continuing relationship with Mannatech as a litigation consultant through May 2007.

About Mannatech

Mannatech, Incorporated is a global wellness solutions provider that develops innovative, high-quality, proprietary nutritional supplements, topical products, and weight management products, which are sold through a global network-marketing system operating throughout the United States and the international markets of Canada, Australia, the United Kingdom, Japan, New Zealand, the Republic of Korea, Taiwan, Denmark, and Germany.