MANNATECH INC — Director's Dealing 2010

Aug 17, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MANNATECH INC (MTEX)
CIK: 0001056358
Period of Report: 2010-08-13

Reporting Person: CASTER SAMUEL L (10% Owner)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-08-13	Right to Purchase Common Stock	$2.75	D	10000	Disposed	2013-11-19	Common Stock, Par Value $0.0001 per share (10000)	Direct
2010-08-16	Right to Purchase Common Stock	$2.71	A	8583	Acquired	2015-08-15	Common Stock, Par Value $0.0001 per share (8583)	Direct

Footnotes

F1: The option provided for vesting in three equal annual installments beginning November 20, 2009.

F2: On August 16, 2010, the issuer canceled, pursuant to the issuer's option exchange program, an option for 10,000 shares of Mannatech common stock granted to the reporting person on November 20, 2008. In exchange, the reporting person received a replacement option, for 8,583 shares, having an exercise price of $2.71 a share.

F3: The option vests in three equal annual installments beginning August 16, 2011.