Press Release

RadiSys To Present At The RBC Capital Markets' 2009 Technology, Media and Communications Conference on June 9, 2009

HILLSBORO, Ore. —May 27, 2009 — RadiSys® Corporation (NASDAQ: RSYS), a leading global provider of advanced embedded solutions, announced that it will participate in the RBC Capital Markets’ 2009 Technology, Media and Communications Conference to be held June 9-10, 2009 in San Francisco, CA. Brian Bronson, RadiSys Chief Financial Officer, will present an overview of the Company’s business and strategy on Tuesday, June 9, 2009 at 9 a.m. PT.

A live audio webcast and a replay of the event will be available on the Company’s investor relations website at http://investor.radisys.com/ .