MANNATECH INC — Director's Dealing 2004

May 18, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MANNATECH INC (MTEX)
CIK: 0001056358
Period of Report: 2004-05-18

Reporting Person: CASTER SAMUEL L (Director, Chairman and CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-05-13	Gifted Common Stock, par value $0.0001 per share	G	100000	$10.31	Disposed	5633116	Direct

Footnotes

F1: Mr. Caster donated 100,000 shares of his Mannatech Common Stock to Harvest Rock Church in California, when the fair market value of the stock was $10.31 per share.