X0202 4 2007-02-26 0 0001038074 SILICON LABORATORIES INC SLAB 0001134855 SOOCH NAVDEEP S 400 W CESAR CHAVEZ AUSTIN TX 78701 1 0 0 0 Common Stock, $0.0001 par value 2007-02-26 5 G 0 E 16000 0 D 971545 D Common Stock, $0.0001 par value 2007-05-01 4 S 0 100000 32.42 D 871545 D Common Stock, $0.0001 par value 2007-05-01 4 S 0 38625 32.4197 D 0 I By Libra II, L.P. Gratuitous transfer for which no consideration was received. Shares sold pursuant to reporting person's 10(b)5-1 plan. Price represents the weighted average selling price. Prices range between $31.99 and $32.76. Price represents the weighted average selling price. Prices range between $32.01 and $32.76. These shares are held in a family limited partnership. Bruce A. Maurer, Power of Attorney for Navdeep S. Sooch 2007-05-03