GERON CORP — Director's Dealing 2011

May 13, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GERON CORP (GERN)
CIK: 0000886744
Period of Report: 2011-05-11

Reporting Person: HOMCY CHARLES J (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-11	Common Stock	A	5000	—	Acquired	120251	Direct
2011-05-11	Common Stock	D	57500	—	Disposed	62751	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-11	Stock Option (right to buy)	$4.91	A	10000	Acquired	2014-05-11	Common Stock (10000)	Direct

Footnotes

F1: The shares of restricted stock will remain subject to a repurchase right of Geron over four years, during such time the repurchase right will lapse with respect to 25% of such shares on the earlier of each anniversary date of May 11, 2011 or the annual stockholders meeting date in that year. The lapse of Geron's repurchase right is conditioned on the director continuing to provide services to Geron through each vesting date.

F2: Forfeiture of unvested restricted stock awards in connection with the director's retirement effective May 11, 2011. Repurchase right for remaining outstanding restricted stock awards caused to lapse on May 11, 2011.

F3: Upon the director's retirement effective May 11, 2011, the exercise period for all vested outstanding options was extended until the earlier of the original expiration date of such options or May 11, 2014.