X0202 4 2005-12-13 0 0001038074 SILICON LABORATORIES INC SLAB 0001198611 BRESEMANN DAVID P 4635 BOSTON LANE AUSTIN TX 78735 0 1 0 0 Vice President Common Stock, $0.0001 par value 2005-12-13 4 M 0 416 15.1 A 16162 D Common Stock, $0.0001 par value 2005-12-13 4 M 0 184 15.44 A 16346 D Common Stock, $0.0001 par value 2005-12-13 4 S 0 960 39.28 D 15386 D Non-Qualified Stock Option (right to buy) 15.1 2005-12-13 4 M 0 416 0 D 2003-07-16 2011-09-21 Common Stock, $0.0001 par value 416 3334 D Non-Qualified Stock Option (right to buy) 15.44 2005-12-13 4 M 0 184 0 D 2001-03-16 2011-03-16 Common Stock, $0.0001 par value 184 3866 D Stock option excercise pursuant to reporting person's 10(b)5-1 plan. Shares sold pursuant to reporting person's 10(b)5-1 plan. This option becomes exercisable as it vests in a series of thirty-six (36) successive equal monthly installments beginning July 16, 2003. Not applicable per instruction 4(c)(iii). This option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments beginning March 16, 2001. Bruce A. Maurer, Power of Attorney for David P. Bresemann 2005-12-15