CacheFlow Option. Subject to the approval of the Compensation ---------------- Committee of the Company's Board of Directors, and on or after the date of the closing of the Merger, you will be granted an option to purchase 100,000 shares of the Company's Common Stock (the "CacheFlow Option"). The exercise price per share will be equal to the fair market value per share on the date the option is granted. The option will be subject to the terms and conditions applicable to options granted under the Company's 1999 Stock Incentive Plan or 2000 Supplemental Stock Option Plan, as described in the applicable Plan and the applicable stock option agreement. The option will become exercisable and vest in twelve equal monthly increments for each monthly anniversary following the Commencement Date that you are continuously employed with the Company.