Exhibit 99.4 STARMEDIA NETWORK, INC. 1998 STOCK PLAN FORM OF STOCK OPTION AGREEMENT -- EARLY EXERCISE Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Option Agreement. I. NOTICE OF STOCK OPTION GRANT The undersigned Optionee has been granted an Option to purchase Common Stock of the Company, subject to the terms and conditions of the Plan and this Option Agreement, as follows: Grant Number Date of Grant Vesting Commencement Date Exercise Price per Share Total Number of Shares Granted Total Exercise Price Type of Option: / / Incentive Stock Option /_/ Nonstatutory Stock Option Term/Expiration Daze: Vesting Schedule: The shares subject to this Option shall vest according to the following schedule: 1/3 of the Shares subject to the Option shall vest twelve months after Commencement Date, and 1/36 of the Shares subject to the Option shall vest thereafter, subject to Optionee's continuing to be a Service Provider on such dates. OPTIONEE STARMEDIA NETWORK, INC. /s/ - ----------------------------- -------------------------------- By VP, Finance & Admin. - ----------------------------- -------------------------------- Print Name Title -6-