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 (including additional amendments thereto) with respect to the shares of Common Stock, no par value, of Radisys Corporation, an Oregon corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
| | Vertex Opportunities Fund, LP |
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| | By: | Vertex GP, LLC General Partner |
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| | By: | /s/ Eric Singer |
| | | Name: | Eric Singer |
| | | Title: | Managing Member |
| | Vertex GP, LLC |
| | |
| | By: | /s/ Eric Singer |
| | | Name: | Eric Singer |
| | | Title: | Managing Member |
| | Vertex Special Opportunities Fund II, LP |
| | | |
| | By: | Vertex Special Opportunities GP II, LLC General Partner |
| | | |
| | By: | /s/ Eric Singer |
| | | Name: | Eric Singer |
| | | Title: | Managing Member |
| | Vertex Special Opportunities GP II, LLC |
| | |
| | By: | /s/ Eric Singer |
| | | Name: | Eric Singer |
| | | Title: | Managing Member |
| | Vertex Capital Advisors, LLC |
| | |
| | By: | /s/ Eric Singer |
| | | Name: | Eric Singer |
| | | Title: | Managing Member |
| | /s/ Eric Singer |
| | Eric Singer |
