X0202 4 2005-05-13 0000790705 TEKELEC TKLC 0001006836 ASSCHER JEAN CLAUDE C/O TEKELEC 26580 W. AGOURA ROAD CALABASAS CA 91302 1 0 0 0 Common Stock 24400 D Common Stock 20000 I By Tekelec-Airtronic, S.A. Stock Option (right to buy) 12.25 2005-05-13 4 A 0 10000 0 A Common Stock 10000 10000 D Option to purchase 10,000 shares vests and becomes exercisable in four equal quarterly installments commencing 06/30/05. Option is exercisable as to each installment of vested shares for a period of four years following the vesting date. Jean-Claude Asscher 2005-05-13