X0202 4 2008-05-15 0000790705 TEKELEC TKLC 0001247740 PLASTINA FRANCO C/O TEKELEC 5200 PARAMOUNT PARKWAY MORRISVILLE NC 27560 1 1 0 0 President & CEO Common Stock 2008-05-15 4 M 0 15625 0 A 109735 D Common Stock 2008-05-15 4 F 0 6632 16.29 D 103103 D Restricted Stock Units 2008-05-15 4 M 0 15625 0 D 2008-05-15 2008-05-15 Common Stock 15625 109375 D Share Appreciation Rights 16.42 2008-05-16 4 A 0 170000 0 A 2014-05-16 Common Stock 170000 170000 D Restricted Stock Units 2008-05-16 4 A 0 75000 0 A Common Stock 75000 75000 D Shares were withheld to pay withholding taxes applicable to the acquisition of shares of Common Stock upon the vesting of Restricted Stock Units ("RSUs"). Each RSU converts to Common Stock on a one-for-one basis. RSUs vested on 05/15/08 as to 15,625 shares which (subject to the withholding of shares to pay withholding taxes) were issued on that date. 170,000 Share Appreciation Rights vest and become exercisable in 4 equal annual installments commencing 05/16/09. Between 0% and 100% of the RSUs will become earned and eligible for time-based vesting based on the extent to which Tekelec achieves certain revenue objectives for the period beginning on 4/1/08 and ending on 12/31/09. To the extent that the RSUs are earned, 50% of the RSUs will vest upon the Company's filing with the Securities and Exchange Commission of its Annual Report on Form 10-K for the year ended December 31, 2009, and 50% of the RSUs will vest on the one-year anniversary of such date. Eligibility for vesting and vesting are subject to the Reporting Person's continued employment with the Company through the applicable date. Franco Plastina 2008-05-19