X0202 4 2006-04-17 0 0001002047 NETWORK APPLIANCE INC NTAP 0001197639 ALLEN JEFFRY R 495 EAST JAVA DRIVE SUNNYVALE CA 94089 1 0 0 0 Non-Qualified Stock Option (right to buy) 20.16 2006-04-17 5 G 0 495038 0 D 2011-04-25 Common Stock 495038 0 D Non-Qualified Stock Option (right to buy) 20.16 2006-04-17 5 G 0 495038 0 A 2011-04-25 Common Stock 495038 495038 I by GRAT The reporting person transferred the option to the Jeffry R. Allen 2006 GRAT of which the reporting person is Trustee. Option vests with respect to 25% of the option shares on the first anniversary of the grant date and the balance in a series of equal monthly installments over the next 36 months of service thereafter. Option held by Jeffry R. Allen, Trustee of the Jeffry R. Allen 2006 GRAT. By: Janice Mahoney by Power of Attorney For: Jeffry R. Allen 2006-04-19