X0306 4 2014-01-31 0 0000873044 RADISYS CORP RSYS 0001406312 MUHICH ALLEN L. 5435 NE DAWSON CREEK DRIVE HILLSBORO OR 97124 0 1 0 0 CFO Common Stock 2014-01-31 4 M 0 8300.0 0.0 A 19250 D Common Stock 2014-01-31 4 F 0 3456.0 2.83 D 15794 D Performance Restricted Stock Units 0.0 2014-01-31 4 M 0 8300.0 0.0 D 2014-01-31 Common Stock 8300 14805 D The disposition of directly held shares reported on this form solely represents shares surrendered back to the company as payment of taxes on the vesting of performance-based restricted stock units. Performance restricted stock units were granted on September 10, 2012, October 2, 2012 and February 1, 2013 under the Long-Term Incentive Plan. Performance conditions were determined satisfied on January 17, 2014. The shares will be released on January 31, 2014. N/A ALLEN MUHICH 2014-01-31