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 16,667 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 ------------------- ------------------------------------------- September 14, 1999 16,667 September 14, 2000 11,111 September 14, 2001 5,556

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 16,667 216,859 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 ------------------- ------------ ------------------------------------------- August 29, 1999 216,859 September 14, 1999 120,929 August 29, 2000 112,596 September 14, 2000 16,667 September 14, 2000 11,111 September 14, 2001 5,5568,333

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 16,667 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 ------------------- ------------ ------------------------------------------- August 29, 1999 13,333 September 14, 1999 16,667 7,500 August 29, 2000 6,944 September 14, 2000 11,111 1,111 September 14, 2001 5,556556

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 16,667 89,252 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 ------------------- ------------ ------------------------------------------- August 29, 1999 89,252 September 14, 1999 16,667 62,476 August 29, 2000 50,809 September 14, 2000 11,111 23,333 September 14, 2001 5,55611,667

Early Exercise. The Optionee acknowledges that this is an early exercise of the Option with regard to 16,667 125,688 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 ------------------- ------------ ------------------------------------------- August 29, 1999 125,688 September 14, 1999 16,667 70,344 August 29, 2000 65,344 September 14, 2000 11,111 10,000 September 14, 2001 5,5565,000