JOINT FILING AGREEMENT
EXHIBIT 99.1
In accordance with Rule 13d-1(k) (1) (iii) under the Securities Exchange Act of 1934, as
amended, the persons named below agree to the joint filing on behalf of each of them of a Statement
on Schedule 13D dated May 28, 2009 (including amendments thereto) with respect to the Common Stock
of Nature’s Sunshine Products, Inc. This Joint Filing Agreement shall be filed as an Exhibit to
such Statement.
Dated: May 28, 2009
| Prescott Group Capital Management, L.L.C. | ||||||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇
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| Prescott Group Aggressive Small Cap, L.P. | ||||||
| By: Prescott Group Capital Management, L.L.C., its general partner | ||||||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇ | |||||
| ▇▇▇▇ ▇▇▇▇▇▇▇▇, Managing Member | ||||||
| Prescott Group Aggressive Small Cap II, L.P. | ||||||
| By: Prescott Group Capital Management, L.L.C., its general partner | ||||||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇ | |||||
| ▇▇▇▇ ▇▇▇▇▇▇▇▇, Managing Member | ||||||
| ▇▇▇▇ ▇▇▇▇▇▇▇▇ | ||||||
| By: | /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇ | |||||
| ▇▇▇▇ ▇▇▇▇▇▇▇▇ | ||||||