Common use of Early Exercise Clause in Contracts

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 13,333 Shares and that in the event that the Optionee should terminate Employment prior to the dates indicated below, notwithstanding any other provisions hereto, the Company shall have the option to purchase such Shares at the Option Price. The Company may pay such purchase price by offsetting such amount against the amount then due under the Purchase Note. The Company may exercise such option at any time within thirty days following such termination of Employment. THROUGH DATE SHARES SUBJECT TO COMPANY REPURCHASE OPTION 6/8/01 13,333 6/8/02 6,667

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 13,333 92,550 Shares and that in the event that the Optionee should terminate Employment prior to the dates indicated below, notwithstanding any other provisions hereto, the Company shall have the option to purchase such Shares at the Option Price. The Company may pay such purchase price by offsetting such amount against the amount then due under the Purchase Note. The Company may exercise such option at any time within thirty days following such termination of Employment. THROUGH DATE SHARES SUBJECT TO COMPANY REPURCHASE OPTION 6/8/01 13,333 6/8/02 6,6675/3/01 92,550 5/3/02 61,700 5/3/03 30,850

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 13,333 72,173 Shares (“Unvested Shares”) and that in the event that the Optionee should terminate Employment prior to the dates indicated below, notwithstanding any other provisions hereto, the Company shall have the option to purchase such the Unvested Shares at the Option Price. The Company may pay such purchase price by offsetting such amount against the amount then due under the Purchase Note. The Company may exercise such option at any time within thirty days following such termination of Employment. THROUGH DATE SHARES SUBJECT TO COMPANY REPURCHASE OPTION 6/8/01 13,333 6/8/02 6,6675/3/02 72,173 5/3/03 36,086

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 13,333 50,000 Shares and that in the event that the Optionee should terminate Employment prior to the dates indicated below, notwithstanding any other provisions hereto, the Company shall have the option to purchase such Shares at the Option Price. The Company may pay such purchase price by offsetting such amount against the amount then due under the Purchase Note. The Company may exercise such option at any time within thirty days following such termination of Employment. THROUGH DATE SHARES SUBJECT TO COMPANY REPURCHASE OPTION 6/8/01 13,333 6/8/02 6,667Through Date Shares Subject to Company Repurchase Option 5/3/01 50,000 5/3/02 33,333 5/3/03 16,667

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 13,333 50,000 Shares and that in the event that the Optionee should terminate Employment prior to the dates indicated below, notwithstanding any other provisions hereto, the Company shall have the option to purchase such Shares at the Option Price. The Company may pay such purchase price by offsetting such amount against the amount then due under the Purchase Note. The Company may exercise such option at any time within thirty days following such termination of Employment. THROUGH DATE SHARES SUBJECT TO COMPANY REPURCHASE OPTION 6/8/01 13,333 6/8/02 6,6675/3/01 50,000 5/3/02 33,333 5/3/03 16,667