X0303 4 2010-01-27 0 0001173752 ARUBA NETWORKS, INC. ARUN 0001393400 Orr Dominic P 1344 CROSSMAN AVENUE SUNNYVALE CA 94089 1 1 0 0 President and CEO Common Stock 2010-01-27 4 M 0 11306 2.25 A 1102138 D Common Stock 2010-01-27 4 S 0 11306 11.0098 D 1090832 D Common Stock 890989 I by Corporation Non-Qualified Stock Option (right to buy) 2.25 2010-01-27 4 M 0 11306 0 D 2016-04-17 Common Stock 11306 5313137 D The sale reported in this Form 4 was effected pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on 9/30/2009. Sale prices range from $11.00 per share to $11.03 per share. Sale price listed represents the weighted average sale price of all 11,306 shares sold. Includes (i) 276,239 shares held of record by Ardmore Ventures, (ii) 500,000 shares held of record by Omano Ventures, (iii) 2,250 shares held of record by D. Orr Management Company, LLC and (iv) 112,500 shares held of record by Praia Grande Ventures, LP. 25% of the shares subject to the option will vest on April 18, 2007, and the remaining shares will vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested on April 18, 2010. The option is exercisable in full at any time, but the shares received upon exercise before vesting are subject to repurchase restrictions that lapse over time. By: Jeannette Bjoernsen Attorney-in-Fact For: Dominic P. Orr 2010-01-29