X0306 4 2015-05-18 0 0001056358 MANNATECH INC MTEX 0001250072 JOBE LARRY A 600 S. ROYAL LANE, STE 200 COPPELL TX 75019 1 0 0 0 Common stock, Par value $0.0001 per share 2015-05-18 4 P 0 3827 20.71 A 45000 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.53 to $20.769, inclusive. 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 purchased at each separate price within the ranges set forth in this footnote of this Form 4. /s/ S. Mark Nicholls, CFO by Power of Attorney 2015-05-18