X0202 4 2006-07-05 0 0001002047 NETWORK APPLIANCE INC NTAP 0001197638 LAU JAMES K 495 EAST JAVA DRIVE SUNNYVALE CA 94089 0 1 0 0 Executive Vice President, Common Stock 2006-07-05 4 S 0 35000 34.4529 D 3958933 I by Trust3 Common Stock 4578 D Common Stock 68600 I by Trust1 Common Stock 68600 I by Trust2 This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 17, 2006. The sale prices for the reported transaction were in a range of $34.17 to $34.83 per share. Shares held in trust by James K. Lau and Katherine S. Lau, trustees to the KNSK Trust UDT 9/18/00 Shares held in trust by Koon H. Lau, trustee to The Jason A. Lau 1998 Trust. Reporting person disclaims beneficial ownership of such shares. Shares held in trust by Koon H. Lau, trustee to The Jonathan A. Lau 1998 Trust. Reporting person disclaims beneficial ownership of such shares. By: Janice Mahoney by Power of Attorney For: James K. Lau 2006-07-07