X0303 4 2008-08-18 0000790705 TEKELEC TKLC 0001323310 Everett William H C/O TEKELEC 5200 PARAMOUNT PARKWAY MORRISVILLE NC 27560 0 1 0 0 Chief Financial Officer Common Stock 2008-08-18 4 S 0 8000 16.29 D 43574 D This transaction was executed in multiple trades at prices ranging from $16.25 to $16.35. The price reported reflects the weighted average sale price. The Reporting Person has provided to the Issuer and will provide to any shareholder of the Issuer, or to the SEC Staff, upon request, information regarding the number of shares sold at each price within the range. William H. Everett 2008-08-20