MANNATECH INC — Director's Dealing 2010

May 21, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MANNATECH INC (MTEX)
CIK: 0001056358
Period of Report: 2010-05-21

Reporting Person: WIER PATRICIA A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-21	Common Stock, Par Value $0.0001 per share	P	99	$2.97	Acquired	14399	Direct
2010-05-21	Common Stock, Par Value $0.0001 per share	P	3799	$2.98	Acquired	18198	Direct
2010-05-21	Common Stock, Par Value $0.0001 per share	P	802	$2.99	Acquired	19000	Direct
2010-05-21	Common Stock, Par Value $0.0001 per share	P	1000	$3.00	Acquired	20000	Direct

Footnotes

F1: The shares disclosed in this Form 4 were purchased in multiple individual transactions for each stated price. The reporting
person undertakes to provide Mannatech, Incorporated, any security holder of Mannatech, Incorporated, or the staff of the
Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each individual
transaction for each stated price.