As filed with the Securities and Exchange Commission on August 1, 2007
                                                           Registration No. 333-
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                      ------------------------------------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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                                GERON CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)
         Delaware                                        75-2287752
(State or Other Jurisdiction of                       (I.R.S. Employer
 Incorporation or Organization)                     Identification Number)

                       ----------------------------------
                             230 Constitution Drive
                          Menlo Park, California 94025
         (Addresses of Principal Executive Offices including Zip Codes)

                      ------------------------------------
                           2002 EQUITY INCENTIVE PLAN
                            (Full Title of the Plans)

                      ------------------------------------

               Thomas B. Okarma                            Copy to:
    President and Chief Executive Officer          Alan C. Mendelson, Esq.
              Geron Corporation                      Latham & Watkins LLP
            230 Constitution Drive                     140 Scott Drive
         Menlo Park, California 94025            Menlo Park, California 94025
                (650) 473-7700                          (650) 328-4600

          (Name and Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent for Service)


                                                                                                  
                                              CALCULATION OF REGISTRATION FEE
----------------------------------------------------------- ------------------ ---------------- ------------- --------------
                                                                                                  Proposed
                                                                                   Proposed        Maximum
           Title of Securities to be Registered                   Amount           Maximum        Aggregate     Amount of
                                                                  to be         Offering Price    Offering    Registration
                                                            Registered (1)(2)   Per Share (3)     Price (3)         Fee
----------------------------------------------------------- ------------------ ---------------- ------------- --------------
Common Stock, $0.001 par value per share, issuable under
 the 2002 Equity Incentive Plan (4)                                  2,000,000            $6.80   $13,600,000      $417.52
----------------------------------------------------------- ------------------ ---------------- ------------- --------------
Total                                                                2,000,000            $6.80   $13,600,000      $417.52
----------------------------------------------------------- ------------------ ---------------- ------------- --------------


(1) The 2002 Equity Incentive Plan (the "2002 Plan") authorizes the issuance of
   13,579,603 shares of common stock, par value $0.001 per share (the "Common
   Stock"), of Geron Corporation (the "Company"), of which 2,000,000 shares are
   being registered hereunder.

(2) This registration statement shall also cover any additional shares of Common
   Stock which become issuable under the Plan by reason of any stock dividend,
   stock split, recapitalization or any other similar transaction effected
   without the receipt of consideration which results in an increase in the
   number of the outstanding shares of the Company's Common Stock.

(3) Estimated solely for the purposes of calculating the registration fee
   pursuant to Rule 457(h) and (c) under the Securities Act of 1933, as amended
   (the "Securities Act of 1933"), and is based on the average ($6.80) of the
   high ($6.94) and low ($6.66) sales price of the Common Stock, as reported on
   the Nasdaq Global Market on July 30, 2007.

(4) Each share of Common Stock being registered hereunder, if issued prior to
   the termination by the Company of its Rights Agreement dated as of July 20,
   2001, will include one preferred share purchase right. Prior to the
   occurrence of certain events, the preferred share purchase rights will not be
   exercisable or evidenced separately from the Common Stock.

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       Proposed sale to take place as soon after the effective date of the
                             registration statement
                as options granted under the Plan are exercised.

                                  Total Pages 10
                             Exhibit Index on Page 7





                      REGISTRATION OF ADDITIONAL SECURITIES

           On July 3, 2002, Geron Corporation, a Delaware corporation ("Geron"
or the "Company") filed a Registration Statement on Form S-8, Registration No.
333-91916 (the "First Registration Statement"), with the Securities and Exchange
Commission (the "Commission") relating to an aggregate of 7,000,000 shares of
the Company's common stock, par value $0.001 per share (the "Common Stock"), to
be offered and sold under the 2002 Equity Incentive Plan (the "Plan"). On
October 7, 2004, the Company filed a Registration Statement on Form S-8,
Registration No. 333-119601 (the "Second Registration Statement"), with the
Commission relating to an additional 579,603 shares of Common Stock issuable
under the Plan. On August 5, 2005, the Company filed a Registration Statement on
Form S-8, Registration No. 333-127255 (the "Third Registration Statement"), with
the Commission relating to an additional 2,000,000 shares of Common Stock
issuable under the Plan. On August 4, 2006, the Company filed a Registration
Statement on Form S-8, Registration No. 333-136330 (the "Fourth Registration
Statement"), with the Commission relating to an additional 2,000,000 shares of
Common Stock issuable under the Plan. Pursuant to Instruction E of Form S-8, the
contents of the First Registration Statement, Second Registration Statement,
Third Registration Statement and Fourth Registration Statement are incorporated
by reference in this registration statement on Form S-8 (the "Registration
Statement"). The Company is hereby registering an additional 2,000,000 shares of
Common Stock issuable under the Plan, none of which has been issued as of the
date of this Registration Statement.

                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

     The information called for in Part I of the Form S-8 is not being filed
with or included in this Form S-8 (by incorporation by reference or otherwise)
in accordance with the rules and regulations of the Commission.

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

     The following documents filed with the Commission by Geron are incorporated
as of their respective dates in this registration statement by reference:

o    Geron's Annual Report on Form 10-K for the year ended December 31, 2006,
     filed with the Commission on March 16, 2007;

o    Geron's Current Reports on Form 8-K filed with the Commission on January 5,
     2007, February 12, 2007, March 1, 2007, March 9, 2007, April 3, 2007, and
     June 18, 2007;

o    Geron's Quarterly Report on Form 10-Q for the quarter ended March 31, 2007,
     filed with the Commission on April 30, 2007;

o    Geron's Quarterly Report on Form 10-Q for the three and six months ended
     June 30, 2007, filed with the Commission on July 31, 2007;

o    the description of Geron preferred share purchase rights, contained in
     Geron's Current Report on Form 8-K dated as of July 20, 2001, filed with
     the Commission on July 23, 2001, and any amendment or report filed with the
     Commission for purposes of updating the description.

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All documents filed by Geron pursuant to Sections 13(a), 13(c), 14 and 15(d) of
the Securities Exchange Act of 1934, prior to the filing of a post-effective
amendment which indicates that all securities offered have been sold or which
deregisters all securities then remaining unsold are incorporated by reference
in this registration statement and are a part hereof from the date of filing
such documents. Any statement contained in a document incorporated or deemed to
be incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this registration statement to the extent that a statement
contained herein or in any other subsequently filed document which also is or is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this registration
statement.

Item 4. Description of Securities

        Not applicable.

Item 5. Interests of Named Experts and Counsel

     The consolidated financial statements of Geron Corporation incorporated by
reference in Geron's Annual Report (Form 10-K) for the year ended December 31,
2006 (including schedules appearing therein), and Geron's management's
assessment of the effectiveness of internal control over financial reporting as
of December 31, 2006, incorporated by reference therein, have been audited by
Ernst & Young LLP, independent registered public accounting firm, as set forth
in their reports thereon (which conclude, among other things, that Geron
Corporation did not maintain effective internal control over financial reporting
as of December 31, 2006, based on Internal Control-Integrated Framework issued
by the Committee of Sponsoring Organizations of the Treadway Commission, because
of the effects of the material weakness described therein), incorporated
therein, and incorporated herein by reference. Such consolidated financial
statements and management's assessment have been incorporated herein by
reference in reliance upon such reports given on the authority of such firm as
experts in accounting and auditing.

Item 6. Indemnification of Directors and Officers


     The Company is incorporated under the laws of the State of Delaware.
Reference is made to Section 102(b)(7) of the Delaware General Corporation Law,
or DGCL, which enables a corporation in its original certificate of
incorporation or an amendment thereto to eliminate or limit the personal
liability of a director for violations of the director's fiduciary duty, except
(1) for any breach of the director's duty of loyalty to the corporation or its
stockholders, (2) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (3) pursuant to Section
174 of the DGCL, which provides for liability of directors for unlawful payments
of dividends of unlawful stock purchase or redemptions, or (4) for any
transaction from which a director derived an improper personal benefit.


     Reference is also made to Section 145 of the DGCL, which provides that a
corporation may indemnify any person, including an officer or director, who is,
or is threatened to be made, party to any threatened, pending or completed legal
action, suit or proceeding, whether civil, criminal, administrative or
investigative, other than an action by or in the right of such corporation, by
reason of the fact that such person was an officer, director, employee or agent
of such corporation or is or was serving at the request of such corporation as a
director, officer, employee or agent of another corporation or enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines and
amounts paid in settlement actually and reasonably incurred by such person in
connection with such action, suit or proceeding, provided such officer,
director, employee or agent acted in good faith and in a manner he reasonably
believed to be in, or not opposed to, the corporation's best interest and, for
criminal proceedings, had no reasonable cause to believe that his conduct was
unlawful. A Delaware corporation may indemnify any officer or director in an
action by or in the right of the corporation under the same conditions, except
that no indemnification is permitted without judicial approval if the officer or
director is adjudged to be liable to the corporation. Where an officer or
director is successful on the merits or otherwise in the defense of any action
referred to above, the corporation must indemnify him against the expenses that
such officer or director actually and reasonably incurred.


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     The Company's certificate of incorporation provides for indemnification of
the officers and directors to the full extent permitted by applicable law.

Item 7. Exemption from Registration Claimed

        Not Applicable.

Item 8. Exhibits

     A list of exhibits filed with this registration statement is set forth in
the Exhibit Index on page 7 and is incorporated herein by reference.

Item 9. Undertakings

       (a) The undersigned registrant hereby undertakes:

           (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this registration statement:

           (i) To include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933;

           (ii) To reflect in the prospectus any facts or events arising after
the effective date of this registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in this registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in
volume and price represent no more than 20 percent change in the maximum
aggregate offering price set forth in the "Calculation of Registration Fee"
table in the effective registration statement; and

           (iii) To include any material information with respect to the plan of
distribution not previously disclosed in this registration statement or any
material change to such information in this registration statement;

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in reports filed with or furnished to the
Commission by the registrant pursuant to Section 13 or Section 15(d) of the
Securities Exchange Act of 1934 that are incorporated by reference in this
registration statement.

           (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

           (3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

       (b) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in this
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.


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       (c) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to existing provisions, or otherwise, the
registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act of
1933 and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act of 1933 and will be governed by the final adjudication of such issue.


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                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-8 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Menlo Park, State of California, on August 1, 2007.

                                         GERON CORPORATION

                                    By:  /s/ David L. Greenwood
                                         ---------------------------------------
                                         David L. Greenwood
                                         Executive Vice President and
                                         Chief Financial Officer

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENT, that each person whose signature appears
below constitutes and appoints Thomas B. Okarma and David L. Greenwood, and each
of them, his true and lawful attorneys-in-fact and agents, each with full power
of substitution and resubstitution, for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this registration statement, and to file the same, with all
exhibits thereto and other documents in connection therewith, with the
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in order to effectuate the same as fully, to
all intents and purposes, as he might or could do in person, hereby ratifying
and confirming all that each of said attorneys-in-fact and agents, or any of
them, or their or his substitutes or substitute may lawfully do or cause to be
done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities indicated as of August 1, 2007.



Signature                           Title                                             Date
---------                           -----                                             ----

                                                                           
/s/ Thomas B. Okarma                President, Chief Executive Officer and       August 1, 2007
------------------------
Thomas B. Okarma                    Director (Principal Executive Officer)

/s/ David L. Greenwood              Executive Vice President and Chief           August 1, 2007
------------------------
David L. Greenwood                  Financial Officer (Principal Financial
                                    and Accounting Officer)

/s/ Alexander E. Barkas             Director                                     August 1, 2007
------------------------
Alexander E. Barkas

/s/ Edward V. Fritzky               Director                                     August 1, 2007
------------------------
Edward V. Fritzky

/s/ Charles J. Homcy                Director                                     August 1, 2007
------------------------
Charles J. Homcy

/s/ Thomas D. Kiley                 Director                                     August 1, 2007
------------------------
Thomas D. Kiley

                                    Director
------------------------
John P. Walker

/s/ Patrick J. Zenner               Director                                     August 1, 2007
------------------------
Patrick J. Zenner



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                                  EXHIBIT INDEX



EXHIBIT                                                                          PAGE
-------                                                                          ----

                                                                           
  4.1+     2002 Equity Incentive Plan                                            N/A
  4.2++    Rights Agreement dated as of July 20, 2001, between Geron             N/A
           Corporation and U.S. Stock Transfer Corporation, as Rights
           Agent
   5.1     Opinion of Latham & Watkins LLP                                        8
  23.1     Consent of Ernst & Young LLP, Independent Registered Public
           Accounting Firm.                                                      10
  23.2     Consent of Latham & Watkins LLP (included in Exhibit 5.1)              8
  24.1     Power of Attorney (included on the signature page to this
           Registration Statement)                                                6


(+)  Incorporated by reference to Exhibit 10.5 to the Company's Annual Report on
     Form 10-K for the fiscal year ended December 31, 2003 filed on February 27,
     2004.

(++) Incorporated by reference to Exhibit 4.1 to the Company's Current Report on
     Form 8-K filed on July 23, 2001.


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