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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
886744	Geron Corp	GERN	Pharmaceutical Preparations (2834)	752287752

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1187021	David Earp	C/O Geron Corporation 230 Constitution Drive Menlo Park CA 94025	Svp Bus Dev, Chief Patnt Couns	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2011-05-20	25,000	$0.00	453,298	No	4	A	Direct
Common Stock	Acquisiton	2011-05-20	59,500	$0.00	512,798	No	4	A	Direct
Common Stock	Acquisiton	2011-05-20	5,000	$0.00	517,798	No	4	A	Direct
Common Stock	Acquisiton	2011-05-20	5,000	$0.00	522,798	No	4	A	Direct
Common Stock	Disposition	2011-05-24	2,975	$4.47	519,823	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	A	Direct
No	4	A	Direct
No	4	A	Direct
No	4	A	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Acquisiton	2011-05-20	50,000	$0.00	50,000	$4.65

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
50,000		2021-05-20	No	4	A	Direct

Footnotes

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 each anniversary date of May 28, 2011. The lapse of Geron's repurchase right is conditioned on the employee continuing to provide services to Geron through each vesting date.
The shares of restricted stock will remain subject to a repurchase right of Geron over two years, during which time the repurchase right will lapse with respect to 50% of such shares on each anniversary date of May 28, 2011. The lapse of Geron's repurchase right is conditioned on the employee continuing to provide services to Geron through each vesting date.
The shares of restricted stock will remain subject to a reacquisition right of Geron over 19 months until the achievement of certain performance milestone critiera in connection with the Company's GRN1005 program.
The shares of restricted stock will remain subject to a reacquisition right of Geron over three years until the achievement of certain performance milestone critiera in connection with the Company's GRN1005 program.
This option is exercisable in a series of 48 consecutive equal monthly installments commencing May 20, 2011, provided the optionee continues to provide services to the Company.
Shares sold for payment of payroll tax withholdings in connection with vesting of restricted stock award.