4 2003-05-30 0 0001038074 SILICON LABORATORIES INC SLAB 0001134855 SOOCH NAVDEEP S 1 1 1 0 Chairman & CEO Common Stock, $0.0001 par value 2003-05-30 4 S 0 46384 29.5764 D 5449035 D Common Stock, $0.0001 par value 2003-05-30 4 S 0 2783 29.5764 D 226735 I By Libra II, L.P. Common Stock, $0.0001 par value 2003-05-30 4 S 0 928 29.5764 D 58745 I David T. Sooch Trust Common Stock, $0.0001 par value 2003-05-30 4 S 0 928 29.5764 D 58745 I Kelly A. Sooch Trust Common Stock, $0.0001 par value 2003-05-30 4 S 0 928 29.5764 D 58745 I Kevin S. Sooch Trust These shares are held in a family limited partnership. These shares are held in a trust for the benefit of the reporting person's children. The reporting person is co-trustee of the trust. Navdeep S. Sooch 2003-06-02