X0306 4 2015-03-20 0 0001056358 MANNATECH INC MTEX 0001298819 SINNOTT ROBERT A 600 S ROYAL LANE, SUITE 200 COPPELL TX 75019 0 1 0 0 CEO & CSO Common Stock, Par Value $0.0001 per share 2015-03-20 4 M 0 1667 5.72 A 3333 D Common Stock, Par Value $0.0001 per share 6370 I See Footnote Right to Purchase Common Stock 5.72 2015-03-20 4 M 0 1667 0 D 2023-02-21 Common Stock, Par Value $0.0001 Per Share 5000 1667 D The Securities are owned by the reporting person's wife as custodian for his sons. The reporting person disclaims beneficial ownership of these shares, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the shares for purposes of Section 16 or for any other purpose. The options vest in three equal annual installments beginning February 21, 2014. /s/ S. Mark Nicholls, CFO by Power of Attorney 2015-03-20