In September, the Coppell-based maker of nutritional supplements was issued a so-called Wells notice, signaling that the SEC's enforcement division planned to ask the commission to begin cease-and-desist proceedings against Mannatech for firing its former auditor, Grant Thornton LLP, in October 2007.
Mannatech fired Grant Thornton after the tax firm gave the company an ultimatum: Either remove chairman and founder Sam Caster or find a new accountant. Mannatech chose the latter.