X0303 4 2010-02-25 0000790705 TEKELEC TKLC 0001328255 Rush Gregory S C/O TEKELEC 5200 PARAMOUNT PARKWAY MORRISVILLE NC 27560 0 1 0 0 Chief Accounting Officer Common Stock 0 D Restricted Stock Units 2010-02-25 4 A 0 6661 0 A 2012-02-27 2012-02-27 Common Stock 6661 6661 D Each Restricted Stock Unit ("RSU").converts to Common Stock on a one-for-one basis. Of the RSUs granted on 02/27/2009 and reported on the reporting person's Form 4 filed with the Securities and Exchange Commission on March 3, 2009, based on the extent to which certain Issuer performance criteria were met, this number of RSUs became earned and eligible for vesting on February 27, 2012 as long as the reporting person remains an employee of the Issuer (or one of its affiliates) through that date, and the remaining RSUs were forfeited. Gregory S. Rush 2010-03-01