POWER OF ATTORNEY

   Know all men by these presents, that the undersigned hereby constitutes and
appoints Pam Smith, Chris Johnson, Laura Reederson, Olivia Bloom
Angela Kantere, David Clark and Katherine Harmon, and each of them,
the undersigned's true and lawful attorney-in-fact to:

(1) 	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer of Geron Corporation (the "Company"),
Forms 3, 4, and 5 in accordance with Section 16(a) of the
Securities Exchange Act of 1934, as amended and the rules thereunder;

(2) 	do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such
Form 3, 4, or 5, and execute any amendment or amendments thereto,
and file such form with the United States Securities and Exchange Commission
and any stock exchange or similar authority; and

(3) 	take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact,
may be of benefit to, in the best interest of, or legally required by,
the undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and conditions
as such attorney-in-fact may approve in such attorney-in-fact's discretion.

   The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might
or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact,
or such attorney-in-fact's substitute or substitutes, shall lawfully do or
cause to be done by virtue of this power of attorney and the rights
and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934, as amended.

   This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4, and 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

   IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this 1st day of August 2023.


Signature:  /s/ Scott Samuels


Print Name:  Scott Samuels