Exhibit 99.1
JOINT FILING AGREEMENT
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 originally filed on November 29, 2011 (including amendments thereto) with respect to the shares of Common Stock, par value $0.01 per share, of Derma Sciences, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
Dated: November 29, 2011
| Raging Capital Fund, LP | ||||
| By: | Raging Capital Management, LLC General Partner | |||
| By: | /s/ William C. Martin | |||
| Name: | William C. Martin | |||
| Title: | Managing Member | |||
| Raging Capital Fund (QP), LP | ||||
| By: | Raging Capital Management, LLC General Partner | |||
| By: | /s/ William C. Martin | |||
| Name: | William C. Martin | |||
| Title: | Managing Member | |||
| Raging Capital Management, LLC | |||
| By: | /s/ William C. Martin | ||
| Name: | William C. Martin | ||
| Title: | Managing Member | ||
| /s/ William C. Martin | |
| William C. Martin |