MANNATECH INC — Director's Dealing 2010

Mar 1, 2010

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: MANNATECH INC (MTEX)
CIK: 0001056358
Period of Report: 2010-02-24

Reporting Person: Clark Natalie Lynne (Sr.VP, North America)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, Par Value $0.0001 per share	250	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Right to Purchase Common Stock	$2.63	2010-08-22	Common Stock, Par Value $0.0001 per share (4000)		Direct
Right to Purchase Common Stock	$14.99	2016-11-16	Common Stock, Par Value $0.0001 per share (12000)		Direct
Right to Purchase Common Stock	$7.31	2017-09-05	Common Stock, Par Value $0.0001 per share (3000)		Direct
Right to Purchase Common Stock	$2.50	2018-11-19	Common Stock, Par Value $0.0001 per share (1000)		Direct
Right to Purchase Common Stock	$3.56	2020-02-23	Common Stock, Par Value $0.0001 per share (5000)		Direct

Footnotes

F1: Fully vested

F2: Two-thirds of the stock options are vested, another one-third of the stock options will vest on September 6, 2010.

F3: One-third of the stock options are vested, another one-third of the stock options will vest on November 20, 2010, and the
remaining one-third of the stock options will vest on November 20, 2011.

F4: One-third of the stock options are vested, another one-third of the stock options will vest on February 24, 2011, and the
remaining one-third of the stock options will vest on February 24, 2012.