X0303 4 2008-09-16 1 0000790705 TEKELEC TKLC 0001442782 Kensico Offshore Fund II Master Ltd. C/O KENSICO CAPITAL MANAGEMENT 55 RAILROAD AVENUE, 2ND FLOOR GREENWICH CT 06830 0 0 1 0 0001113000 KENSICO CAPITAL MANAGEMENT CORP C/O KENSICO CAPITAL MANAGEMENT 55 RAILROAD AVENUE, 2ND FLOOR GREENWICH CT 06830 0 0 1 0 0001443560 Lowenstein Michael Bernard C/O KENSICO CAPITAL MANAGEMENT 55 RAILROAD AVENUE, 2ND FLOOR GREENWICH CT 06830 0 0 1 0 0001443559 Coleman Thomas Jason C/O KENSICO CAPITAL MANAGEMENT 55 RAILROAD AVENUE, 2ND FLOOR GREENWICH CT 06830 0 0 1 0 Common Stock 2008-09-16 4 S 0 8700 15.05 D 558886 D The securities reported as directly beneficially owned by Kensico Offshore Fund II Master, Ltd. may be deemed to be indirectly beneficially owned by Kensico Capital Management Corp., Thomas Jason Coleman and Michael Bernard Lowenstein. Michael Bernard Lowenstein and Thomas Jason Coleman are the controlling shareholders of Kensico Capital Management Corp., which is the investment manager of Kensico Offshore Fund II Master, Ltd. Pursuant to Instruction 4(b)(iv) of Form 4, Kensico Capital Management Corp., Thomas Jason Coleman and Michael Bernard Lowenstein have elected to report as indirectly beneficially owned the entire number of securities owned by Kensico Offshore Fund II Master, Ltd. but each of them disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed its or his pecuniary interest therein and/or that are not actually distributed to it or him. /s/ Michael Bernard Lowenstein, Director of Kensico Capital Management Corp., Investment Manager of Kensico Offshore Fund II Master, Ltd. 2008-09-17 /s/ Michael Bernard Lowenstein, Director of Kensico Capital Management Corp., LLC 2008-09-17 /s/ Michael Bernard Lowenstein 2008-09-17 /s/ Thomas Jason Coleman 2008-09-17