X0203 3/A 2010-03-25 2010-03-26 0 0000886744 GERON CORP GERN 0001302356 Hofstaetter Thomas C/O GERON CORPORATION 230 CONSTITUTION DRIVE MENLO PARK CA 94025 1 0 0 0 Stock Option (right to buy) 5.83 2020-03-25 Common Stock 45000 D Stock Option (right to buy) 5.83 2010-03-25 2020-03-25 Common Stock 2500 D This option is exercisable in a series of three equal consecutive annual installments commencing from March 25, 2010, provided the optionee continues to provide services to the Company. /s/ Olivia Bloom for Thomas Hofstaetter 2010-03-29