As filed with the Securities and Exchange Commission on September 11, 2003

                                                      Registration No. _________

                             Washington, D.C. 20549
                                    FORM S-3
                             REGISTRATION STATEMENT
                           THE SECURITIES ACT OF 1933
                                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 No.)
                             230 Constitution Drive
                          Menlo Park, California 94025
                                 (650) 473-7700

               (Address, Including Zip Code and Telephone Number,
        Including Area Code, of Registrant's Principal Executive Offices)
                                Thomas B. Okarma
                      President and Chief Executive Officer
                                Geron Corporation
                             230 Constitution Drive
                          Menlo Park, California 94025
                                 (650) 473-7700
            (Name, Address, Including Zip Code and Telephone Number,
                   Including Area Code, of Agent for Service)
                                   Copies to:
                             Alan C. Mendelson, Esq.
                              Latham & Watkins LLP
                             135 Commonwealth Drive
                          Menlo Park, California 94025
                                 (650) 328-4600
         Approximate date of commencement of proposed sale to the public: From
time to time after this Registration Statement becomes effective.
         If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. []
         If any of the securities being registered on this Form are to be
offered on a delayed or continuous basis pursuant to Rule 415 under the
Securities Act of 1933, other than securities offered only in connection with
dividend or interest reinvestment plans, check the following box. [X]
         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. []
         If this Form is a post-effective amendment filed pursuant to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act registration statement number of the earlier effective registration
statement for the same offering.[]
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box []

                         CALCULATION OF REGISTRATION FEE
====================================== ===================== ========================= ========================== ================
                                                               Proposed Maximum           Proposed Maximum           Amount of
    Title of Securities to be            Amount to be         Offering Price per         Aggregate Offering        Registration
            Registered                   Registered(1)               share                     Price                    Fee
-------------------------------------- --------------------- ------------------------- -------------------------- -----------------
Common Stock, par value $.001 per
  share, issuable upon exercise
  of warrant                                200,000 shares            $8.63 (2)               $1,726,000              $139.63 (3)
-------------------------------------- --------------------- ------------------------- -------------------------- -----------------

(1)  In the event of a stock split, stock dividend, or similar transaction
     involving Geron's common stock, in order to prevent dilution, the number of
     shares registered shall automatically be increased to cover the additional
     shares in accordance with Rule 416(a) under the Securities Act.
(2)  The offering price is estimated solely for the purpose of calculating the
     registration fee in accordance with Rule 457(c) and based upon the average
     of the high and low prices reported by Nasdaq National Market on September
     10, 2003.
(3)  Calculated in accordance with Rule 457(o) under the Securities Act of 1933.

         The registrant hereby amends this registration statement on such date
or dates as may be necessary to delay its effective date until the registrant
shall file a further amendment which specifically states that this registration
statement shall hereafter become effective in accordance with Section 8(A) of
the Securities Act of 1933 or until the registration statement shall become
effective on such date as the Securities and Exchange Commission, acting
pursuant to said Section 8(A), may determine.



                             UP TO 200,000 SHARES OF

                                GERON CORPORATION

                                  COMMON STOCK

         Our common stock is traded on the Nasdaq National Market under the
symbol "GERN." On September 10, 2003, the closing price of our common stock was

         This prospectus relates to the sale of up to 100,000 shares of our
common stock by Lazard Freres & Co. LLC and the sale of up to 100,000 shares of
our common stock by Burrill & Company LLP. We will not receive any of the
proceeds from the sale of these shares covered by this prospectus.

         Investing in our common stock involves a high degree of risk. See "Risk
Factors" beginning on page 3.


         Neither the Securities and Exchange Commission (the "SEC") nor any
state securities commission has approved or disapproved of these securities or
passed upon the accuracy or adequacy of the prospectus. Any representation to
the contrary is a criminal offense.


                The date of this prospectus is September 11, 2003.

                                TABLE OF CONTENTS

ABOUT GERON.......................................................................................................4
RISK FACTORS......................................................................................................4
FORWARD-LOOKING STATEMENTS.......................................................................................16
USE OF PROCEEDS..................................................................................................16
DESCRIPTION OF OUR COMMON STOCK..................................................................................16
SELLING STOCKHOLDERS.............................................................................................16
PLAN OF DISTRIBUTION.............................................................................................18
LEGAL MATTERS....................................................................................................19
WHERE YOU CAN FIND MORE INFORMATION..............................................................................20
DOCUMENTS WE HAVE INCORPORATED BY REFERENCE......................................................................20

                                   ABOUT GERON

    We are a biopharmaceutical company focused on developing and commercializing
therapeutic and diagnostic products for applications in oncology and
regenerative medicine, and research tools for drug discovery. Our product
development programs are based upon three patented core technologies:
telomerase, human embryonic stem cells and nuclear transfer. Telomeres are the
ends of chromosomes that protect chromosomes from degradation and act as a
molecular "clock" for cellular aging. Telomerase is an enzyme that restores
telomere length and rewinds the molecular "clock," thereby extending the cell's
ability to multiply or replicate. By activating telomerase, we seek to increase
the lifespan of normal cells which have prematurely aged in the body to treat
certain chronic degenerative diseases. Conversely, by inhibiting or targeting
telomerase we hope to kill cancer cells in which telomerase is abnormally turned
on and to diagnose cancer by measuring telomerase activity. Human embryonic stem
cells can develop and differentiate into all cells and tissues in the body. As
such, they are a potential source for the manufacture of replacement cells and
tissues for organ repair applications in regenerative medicine. Nuclear transfer
(sometimes called "somatic cell nuclear transfer") is a method for generating
whole animals from genetic material derived solely from the nucleus of a single
cell obtained from a single animal. We are actively licensing this technology to
others for applications in agriculture and production of biologicals.

    We were incorporated in 1990 under the laws of Delaware. Our principal
executive offices are located at 230 Constitution Drive, Menlo Park, California
94025 and our telephone number is (650) 473-7700.

                                  RISK FACTORS

    Our business is subject to various risks, including those described below.
You should carefully consider these risk factors, together with all of the other
information included in this Form S-3. Any of these risks could materially
adversely affect our business, operating results and financial condition.

Our business is at an early stage of development.

    The science and technology of telomere biology and telomerase, human
embryonic stem cells, and nuclear transfer are relatively new. Our business is
at an early stage of development, in that we do not yet have products in
late-stage clinical trials or on the market. Our ability to produce products
that progress to and through clinical trials is subject to our ability to, among
other things:

    o  continue to have success with our research and development efforts;

    o  select therapeutic compounds for development;

    o  obtain the required regulatory approvals; and

    o  manufacture and market resulting products.

    When potential lead drug compounds or product candidates are identified
through our research programs, they will require significant preclinical and
clinical testing prior to regulatory approval in the United States and
elsewhere. In addition, we will also need to determine whether any of these
potential products can be manufactured in commercial quantities at an acceptable
cost. Our efforts may not result in a product that can be marketed. Because of
the significant scientific, regulatory and commercial milestones that must be
reached for any of our development programs to be successful, any program may be
abandoned, even after significant resources have been expended.

We have a history of losses and anticipate future losses; continued losses
could impair our ability to sustain operations.

    We have incurred operating losses every year since our operations began in
1990. As of June 30, 2003, our accumulated deficit was approximately $243.0
million. Losses have resulted principally from costs incurred in connection with
our research and development activities and from general and administrative
costs associated with our operations. We expect to incur additional operating
losses as our development efforts and clinical testing activities are continued.
Substantially all of our revenues to date have been research support payments
under collaboration agreements. We may be unsuccessful in entering into any new


corporate collaboration that results in revenues. Even if we are able to obtain
new collaboration arrangements with third parties, the revenues generated from
these arrangements may not be sufficient alone to continue or expand our
research or development activities and otherwise sustain our operations.

    We are unable to estimate at this time the level of revenue to be received
from the sale of diagnostic products and telomerase-immortalized cell lines, and
do not currently expect to receive significant revenues from the sale of these
products. Our ability to continue or expand our research activities and
otherwise sustain our operations is dependent on our ability, alone or with
others to, among other things, manufacture and market therapeutic products. We
may never receive material revenues from product sales or if we do receive
revenues, such revenues may not be sufficient to continue or expand our research
or development activities and otherwise sustain our operations.

We will need additional capital to conduct our operations and develop our
products, and our ability to obtain the necessary funding is uncertain.

    We will require substantial capital resources in order to conduct our
operations and develop our products. While we estimate that our existing capital
resources, interest income and equipment financing arrangements will be
sufficient to fund our current and planned operations through June 30, 2005, we
cannot guarantee that this will be the case. The timing and degree of any future
capital requirements will depend on many factors, including:

o    the accuracy of the assumptions underlying our estimates for our capital
     needs in 2003 and beyond;

o    continued scientific progress in our research and development programs;

o    the magnitude and scope of our research and development programs;

o    our ability to maintain and establish strategic arrangements for research,
     development, clinical testing, manufacturing and marketing;

o    our progress with preclinical and clinical trials;

o    the time and costs involved in obtaining regulatory approvals;

o    the costs involved in preparing, filing, prosecuting, maintaining,
     defending and enforcing patent claims; and

o    the potential for new technologies and products.

    We intend to acquire additional funding through strategic collaborations,
public or private equity financings, capital lease transactions or other
financing sources that may be available. Additional financing may not be
available on acceptable terms, or at all. Additional equity financings could
result in significant dilution to stockholders. Further, in the event that
additional funds are obtained through arrangements with collaborative partners,
these arrangements may require us to relinquish rights to some of our
technologies, product candidates or products that we would otherwise seek to
develop and commercialize ourselves. If sufficient capital is not available, we
may be required to delay, reduce the scope of or eliminate one or more of our
programs, any of which could have a material adverse effect on our business.

 We may be unable to identify a safe and effective inhibitor of telomerase
that can be developed into a commercially viable cancer treatment product, which
would adversely impact our future business prospects.

    As a result of our drug discovery efforts to date, we have identified
compounds in laboratory studies that demonstrate potential for inhibiting
telomerase in humans. We have selected one of these compounds, GRN163, as a lead
compound for development as a telomerase inhibitor for cancer. Further research
is required to determine if this compound can be fully developed as an
efficacious, safe and commercially viable treatment for cancer.

    This compound, and other compounds we have identified, may prove to have
undesirable and unintended side effects or other characteristics adversely
affecting its safety, efficacy or cost-effectiveness that would likely prevent


or limit its commercial use. Accordingly, it may not be appropriate for us to
proceed with clinical development, to obtain regulatory approval or to market a
telomerase inhibitor for the treatment of cancer. If we abandon our research for
cancer treatment for any of these reasons or for other reasons, our business
prospects would be materially and adversely affected.

If our access to necessary tissue samples, information or licensed
technologies is restricted, we will not be able to develop our business.

    To continue the research and development of our therapeutic and diagnostic
products, we need access to normal and diseased human and other tissue samples,
other biological materials and related clinical and other information. We
compete with many other companies for these materials and information. We may
not be able to obtain or maintain access to these materials and information on
acceptable terms, if at all. In addition, government regulation in the United
States and foreign countries could result in restricted access to, or
prohibiting the use of, human and other tissue samples. If we lose access to
sufficient numbers or sources of tissue samples, or if tighter restrictions are
imposed on our use of the information generated from tissue samples, our
business will be materially harmed.

Some of our competitors may develop technologies that are superior to or
more cost-effective than ours, which may impact the commercial viability of our
technologies and which may significantly damage our ability to sustain

    The pharmaceutical and biotechnology industries are intensely competitive.
Other pharmaceutical and biotechnology companies and research organizations
currently engage in or have in the past engaged in efforts related to the
biological mechanisms that are the focus of our programs in oncology and
regenerative medicine, including the study of telomeres, telomerase, human
embryonic stem cells, and nuclear transfer. In addition, other products and
therapies that could compete directly with the products that we are seeking to
develop and market currently exist or are being developed by pharmaceutical and
biopharmaceutical companies and by academic and other research organizations.

    Many companies are also developing alternative therapies to treat cancer
and, in this regard, are competitors of ours. According to published reports as
of December 2002, there are approximately 90 approved anti-cancer products on
the market in the United States, and several hundred in clinical development.
Many of the pharmaceutical companies developing and marketing these competing
products (including Astra-Zeneca, Bristol-Meyers Squibb and Novartis, among
others) have significantly greater financial resources and expertise than we do

    o  research and development;

    o  manufacturing;

    o  preclinical and clinical testing;

    o  obtaining regulatory approvals; and

    o  marketing.

    Smaller companies may also prove to be significant competitors, particularly
through collaborative arrangements with large and established companies.
Academic institutions, government agencies and other public and private research
organizations may also conduct research, seek patent protection and establish
collaborative arrangements for research, clinical development and marketing of
products similar to ours. These companies and institutions compete with us in
recruiting and retaining qualified scientific and management personnel as well
as in acquiring technologies complementary to our programs.

    In addition to the above factors, we expect to face competition in the
following areas:

    o  product efficacy and safety;


o    the timing and scope of regulatory consents;

o    availability of resources;

o    reimbursement coverage;

o    price; and

o    patent position, including potentially dominant patent positions of others.

    As a result of the foregoing, our competitors may develop more effective or
more affordable products, or achieve earlier patent protection or product
commercialization than we do. Most significantly, competitive products may
render the products that we develop obsolete.

The ethical, legal and social implications of our research using embryonic
stem cells and nuclear transfer could prevent us from developing or gaining
acceptance for commercially viable products in this area.

    Our programs in regenerative medicine may involve the use of stem cells that
are derived from human embryonic tissue. The use of human embryonic stem cells
gives rise to ethical, legal and social issues regarding the appropriate use of
these cells. In the event that our research related to human embryonic stem
cells becomes the subject of adverse commentary or publicity, the market price
for our common stock could be significantly harmed.

    Some groups have voiced opposition to our technology and practices. The
concepts of cell regeneration, cell immortality, and nuclear transfer have
stimulated significant debate in social and political arenas. We use stem cells
derived through a process that uses as the starting material donated embryos
created for in vitro fertilization procedures but no longer needed or suitable
for that use. Many research institutions, including some of our scientific
collaborators, have adopted policies regarding the ethical use of human
embryonic tissue. These policies may have the effect of limiting the scope of
research conducted using human embryonic stem cells, resulting in reduced
scientific progress. In addition, the United States government and its agencies
have in recent years refused to fund research which involves the use of human
embryonic tissue. President Bush announced on August 9, 2001 that he would
permit federal funding of research on human embryonic stem cells using the
limited number of embryonic stem cell lines that had already been created, but
relatively few federal grants have been made so far. The President's Council on
Bioethics will monitor stem cell research, and the guidelines and regulations it
recommends may include restrictions on the scope of research using human
embryonic or fetal tissue. The Council issued a report in July 2002 that
recommended "that the federal government undertake a thorough-going review of
present and projected practices of human embryo research, with the aim of
establishing appropriate institutions to advise and shape federal policy in this
arena." Our inability to conduct research using human embryonic stem cells due
to such factors as government regulation or otherwise could have a material
adverse effect on us.

    Finally, we acquired Roslin Bio-Med to gain the rights to somatic cell
nuclear transfer technology (sometimes called "somatic cell nuclear transfer").
We acquired exclusive rights to this technology for all areas except human
reproductive cloning and certain other limited applications. Although we will
not be pursuing human reproductive cloning, the use of nuclear transfer to
produce embryonic stem cells (referred to as "therapeutic cloning") could
provide scientific insights that would help us advance our research.
Government-imposed restrictions with respect to any or all of these practices

    o  harm our ability to establish critical partnerships and collaborations;

    o  prompt government regulation of our technologies;

    o  cause delays in our research and development; and

    o  cause a decrease in the price of our stock.

    The U.S. Congress has recently considered legislation that would ban human
therapeutic cloning as well as reproductive cloning. Such a bill has been passed


by the House of Representatives, although not by the Senate, and many
legislators reportedly favor such a ban. The July 2002 report of the President's
Council on Bioethics recommended a four-year moratorium on therapeutic cloning.
If human therapeutic cloning is restricted or banned, our ability to
commercialize those applications could be significantly harmed. Also, if
regulatory bodies were to ban nuclear transfer processes, our research using
nuclear transfer technology could be canceled and our business could be
significantly harmed.

Entry into clinical trials with one or more products may not result in any
commercially viable products.

    We do not expect to generate any significant revenues from product sales for
a period of several years. We may never generate revenues from product sales or
become profitable because of a variety of risks inherent in our business,
including the following risks:

o    clinical trials may not demonstrate the safety and efficacy of our

o    completion of clinical trials may be delayed, or costs of clinical trials
     may exceed anticipated amounts;

o    we may not be able to obtain regulatory approval of our products, or may
     experience delays in obtaining such approvals;

o    we may not be able to manufacture our drugs economically on a commercial

o    we and our licensees may not be able to successfully market our products;

o    physicians may not prescribe our products, or patients may not accept such

o    others may have proprietary rights which prevent us from marketing our
     products; and

o    competitors may sell similar, superior or lower-cost products.

Impairment of our intellectual property rights may limit our ability to
pursue the development of our intended technologies and products.

    Protection of our proprietary technology is critically important to our
business. Our success will depend in part on our ability to obtain and enforce
our patents and maintain trade secrets, both in the United States and in other
countries. The patent positions of pharmaceutical and biopharmaceutical
companies, including ours, are highly uncertain and involve complex legal and
technical questions. In particular, legal principles for biotechnology patents
in the United States and in other countries are evolving, and the extent to
which we will be able to obtain patent coverage to protect our technology, or
enforce issued patents, is uncertain. Further, our patents may be challenged,
invalidated or circumvented, and our patent rights may not provide proprietary
protection or competitive advantages to us. In the event that we are
unsuccessful in obtaining and enforcing patents, our business would be
negatively impacted.

    Publication of discoveries in scientific or patent literature tends to lag
behind actual discoveries by at least several months and sometimes several
years. Therefore, the persons or entities that we or our licensors name as
inventors in our patents and patent applications may not have been the first to
invent the inventions disclosed in the patent applications or patents, or file
patent applications for these inventions. As a result, we may not be able to
obtain patents for discoveries that we otherwise would consider patentable and
that we consider to be extremely significant to our future success.

    Where several parties seek patent protection for the same technology, the
U.S. Patent Office may declare an interference proceeding in order to ascertain
the party to which the patent should be issued. Patent interferences are
typically complex, highly contested legal proceedings, subject to appeal. They
are usually expensive and prolonged, and can cause significant delay in the
issuance of patents. Moreover, parties that receive an adverse decision in an
interference can lose important patent rights. Our pending patent applications,
or our issued patents, may be drawn into interference proceedings which may
delay or prevent the issuance of patents, or result in the loss of issued patent


    The interference process can also be used to challenge a patent that has
been issued to another party. In 2001, the U.S. Patent Office granted our
request for the declaration of an interference between one of our pending
applications relating to nuclear transfer and an issued patent, held by the
University of Massachusetts. We requested this interference in order to clarify
our patent rights in nuclear transfer technology. In March 2002, a second
interference was declared involving our patent application and a patent
application held by Infigen Inc. Both of these interferences are now ongoing.
Based on a review of publicly available information, we believe that the
technology at issue in both of these interferences was invented first at the
Roslin Institute and is encompassed within our nuclear transfer license.
However, we do not have access to the other party's invention records, and, as
in any legal proceeding, the outcome is uncertain.

    Outside of the U.S., certain jurisdictions, such as Europe and Australia,
permit oppositions to be filed against the granting of patents. Because our
intent is to commercialize products internationally, securing both proprietary
protection and freedom to operate outside of the U.S. is important to us. We are
involved in both opposing the grant of patents to others through such opposition
proceedings, and in defending against oppositions filed by others.

    If interferences, oppositions or other challenges to our patent rights are
not resolved promptly in our favor, our existing business relationships may be
jeopardized and we could be delayed or prevented from entering into new
collaborations or from commercializing certain products, which could materially
harm our business.

    Patent litigation may also be necessary to enforce patents issued or
licensed to us or to determine the scope and validity of our proprietary rights
or the proprietary rights of another. We may not be successful in any patent
litigation. Patent litigation can be extremely expensive and time-consuming,
even if the outcome is favorable to us. An adverse outcome in a patent
litigation or any other proceeding in a court or patent office could subject our
business to significant liabilities to other parties, require disputed rights to
be licensed from other parties or require us to cease using the disputed

If we fail to meet our obligations under license agreements, we may face
loss of our rights to key technologies on which our business depends.

    Our business depends on our three core technology platforms, each of which
is based in part on patents licensed from third parties. Those third-party
license agreements impose obligations on us, such as payment obligations and
obligations to diligently pursue development of commercial products under the
licensed patents. If a licensor believes that we have failed to meet our
obligations under a license agreement, the licensor could seek to limit or
terminate our license rights, which would most likely lead to costly and
time-consuming litigation. During the period of any such litigation our ability
to carry out the development and commercialization of potential products could
be significantly and negatively affected. If our license rights were ultimately
lost, our ability to continue our business based on the affected technology
platform would be severely affected.

We may be subject to litigation that will be costly to defend or pursue and
uncertain in its outcome.

    Our business may bring us into conflict with our licensees, licensors, or
others with whom we have contractual or other business relationships, or with
our competitors or others whose interests differ from ours. If we are unable to
resolve those conflicts on terms that are satisfactory to all parties, we may
become involved in litigation brought by or against us. That litigation is
likely to be expensive and may require a significant amount of management's time
and attention, at the expense of other aspects of our business. The outcome of
litigation is always uncertain, and in some cases could include judgments
against us that require us to pay damages, enjoin us from certain activities, or
otherwise affect our legal or contractual rights, which could have a significant
effect on our business.

We may be subject to infringement claims that are costly to defend, and
which may limit our ability to use disputed technologies and prevent us from
pursuing research and development or commercialization of potential products.

    Our commercial success depends significantly on our ability to operate
without infringing patents and the proprietary rights of others. Our
technologies may infringe the patents or proprietary rights of others. In
addition, we may become aware of discoveries and technology controlled by third
parties that are advantageous to our research programs. In the event our
technologies do infringe on the rights of others or we require the use of


discoveries and technology controlled by third parties, we may be prevented from
pursuing research, development or commercialization of potential products or may
be required to obtain licenses to those patents or other proprietary rights or
develop or obtain alternative technologies. We may not be able to obtain
alternative technologies or any required license on commercially favorable
terms, if at all. If we do not obtain the necessary licenses or alternative
technologies, we may be delayed or prevented from pursuing the development of
some potential products. Our failure to obtain alternative technologies or a
license to any technology that we may require to develop or commercialize our
products will significantly and negatively affect our business.

Much of the information and know-how that is critical to our business is not
patentable and we may not be able to prevent others from obtaining this
information and establishing competitive enterprises.

    We sometimes rely on trade secrets to protect our proprietary technology,
especially in circumstances in which patent protection is not believed to be
appropriate or obtainable. We attempt to protect our proprietary technology in
part by confidentiality agreements with our employees, consultants,
collaborators and contractors. We cannot assure you that these agreements will
not be breached, that we would have adequate remedies for any breach, or that
our trade secrets will not otherwise become known or be independently discovered
by competitors, any of which would harm our business significantly.

We depend on our collaborators to help us complete the process of
developing and testing our products and our ability to develop and commercialize
products may be impaired or delayed if our collaborative partnerships are

    Our strategy for the development, clinical testing and commercialization of
our products requires entering into collaborations with corporate partners,
licensors, licensees and others. We are dependent upon the subsequent success of
these other parties in performing their respective responsibilities and the
continued cooperation of our partners. Our collaborators may not cooperate with
us or perform their obligations under our agreements with them. We cannot
control the amount and timing of our collaborators' resources that will be
devoted to our research activities related to our collaborative agreements with
them. Our collaborators may choose to pursue existing or alternative
technologies in preference to those being developed in collaboration with us.

    Under agreements with collaborators, we rely significantly on them, among
other activities, to:

    o design and conduct advanced clinical trials in the event that we reach
clinical trials;

o    fund research and development activities with us;

o    pay us fees upon the achievement of milestones; and

o    market with us any commercial products that result from our collaborations.

    The development and commercialization of potential products will be delayed
if collaborators fail to conduct these activities in a timely manner or at all.
In addition, our collaborators could terminate their agreements with us and we
may not receive any development or milestone payments. If we do not achieve
milestones set forth in the agreements, or if our collaborators breach or
terminate their collaborative agreements with us, our business may be materially

Our reliance on the research activities of our non-employee scientific
consultants and other research institutions, whose activities are not wholly
within our control, may lead to delays in technological developments.

    We rely extensively and have relationships with scientific consultants at
academic and other institutions, some of whom conduct research at our request.
These scientific consultants are not our employees and may have commitments to,
or consulting or advisory contracts with, other entities that may limit their


availability to us. We have limited control over the activities of these
consultants and, except as otherwise required by our collaboration and
consulting agreements, can expect only limited amounts of their time to be
dedicated to our activities. If our scientific consultants are unable or refuse
to contribute to the development of any of our potential discoveries, our
ability to generate significant advances in our technologies will be
significantly harmed.

    In addition, we have formed research collaborations with many academic and
other research institutions throughout the world, including the Roslin
Institute. These research facilities may have commitments to other commercial
and non-commercial entities. We have limited control over the operations of
these laboratories and can expect only limited amounts of time to be dedicated
to our research goals.

The loss of key personnel could slow our ability to conduct research and
develop products.

    Our future success depends to a significant extent on the skills, experience
and efforts of our executive officers and key members of our scientific staff.
Competition for personnel is intense and we may be unable to retain our current
personnel or attract or assimilate other highly qualified management and
scientific personnel in the future. The loss of any or all of these individuals
could harm our business and might significantly delay or prevent the achievement
of research, development or business objectives.

    We also rely on consultants and advisors who assist us in formulating our
research and development and clinical strategy. We face intense competition for
qualified individuals from numerous pharmaceutical, biopharmaceutical and
biotechnology companies, as well as academic and other research institutions. We
may not be able to attract and retain these individuals on acceptable terms.
Failure to do so would materially harm our business.

We may not be able to obtain or maintain sufficient insurance on
commercially reasonable terms or with adequate coverage against potential
liabilities in order to protect ourselves against product liability claims.

    Our business exposes us to potential product liability risks that are
inherent in the testing, manufacturing and marketing of human therapeutic and
diagnostic products. We may become subject to product liability claims if the
use of our products is alleged to have injured subjects or patients. This risk
exists for products tested in human clinical trials as well as products that are
sold commercially. We currently have no clinical trial liability insurance and
we may not be able to obtain and maintain this type of insurance for any of our
clinical trials. In addition, product liability insurance is becoming
increasingly expensive. As a result, we may not be able to obtain or maintain
product liability insurance in the future on acceptable terms or with adequate
coverage against potential liabilities which could have a material adverse
effect on us.

Because we or our collaborators must obtain regulatory approval to market
our products in the United States and foreign jurisdictions, we cannot predict
whether or when we will be permitted to commercialize our products.

    Federal, state and local governments in the United States and governments in
other countries have significant regulations in place that govern many of our
activities. The preclinical testing and clinical trials of the products that we
develop ourselves or that our collaborators develop are subject to extensive
government regulation and may prevent us from creating commercially viable
products from our discoveries. In addition, the sale by us or our collaborators
of any commercially viable product will be subject to government regulation from
several standpoints, including the processes of:

    o  manufacturing;

    o  advertising and promoting;

    o  selling and marketing;

    o  labeling; and

    o  distributing.

    We may not obtain regulatory approval for the products we develop and our
collaborators may not obtain regulatory approval for the products they develop.
Regulatory approval may also entail limitations on the indicated uses of a
proposed product. Because certain of our product candidates involve the
application of new technologies and may be based upon a new therapeutic
approach, such products may be subject to substantial additional review by


various government regulatory authorities, and, as a result, we may obtain
regulatory approvals for such products more slowly than for products based upon
more conventional technologies. If, and to the extent that, we are unable to
comply with these regulations, our ability to earn revenues will be materially
and negatively impacted.

    The regulatory process, particularly for biopharmaceutical products like
ours, is uncertain, can take many years and requires the expenditure of
substantial resources. Any product that we or our collaborative partners develop
must receive all relevant regulatory agency approvals or clearances before it
may be marketed in the United States or other countries. Generally, biological
drugs and non-biological drugs are regulated more rigorously than medical
devices. In particular, human pharmaceutical therapeutic products are subject to
rigorous preclinical and clinical testing and other requirements by the Food and
Drug Administration in the United States and similar health authorities in
foreign countries. The regulatory process, which includes extensive preclinical
testing and clinical trials of each product in order to establish its safety and
efficacy, is uncertain, can take many years and requires the expenditure of
substantial resources.

    Data obtained from preclinical and clinical activities is susceptible to
varying interpretations that could delay, limit or prevent regulatory agency
approvals or clearances. In addition, delays or rejections may be encountered as
a result of changes in regulatory agency policy during the period of product
development and/or the period of review of any application for regulatory agency
approval or clearance for a product. Delays in obtaining regulatory agency
approvals or clearances could:

o    significantly harm the marketing of any products that we or our
     collaborators develop;

o    impose costly procedures upon our activities or the activities of our

o    diminish any competitive advantages that we or our collaborative partners
     may attain; or

o    adversely affect our ability to receive royalties and generate revenues and

    Even if we commit the necessary time and resources, economic and otherwise,
the required regulatory agency approvals or clearances may not be obtained for
any products developed by or in collaboration with us. If regulatory agency
approval or clearance for a new product is obtained, this approval or clearance
may entail limitations on the indicated uses for which it may be marketed that
could limit the potential commercial use of the product. Furthermore, approved
products and their manufacturers are subject to continual review, and discovery
of previously unknown problems with a product or its manufacturer may result in
restrictions on the product or manufacturer, including withdrawal of the product
from the market. Failure to comply with regulatory requirements can result in
severe civil and criminal penalties, including but not limited to:

    o  recall or seizure of products;

    o  injunction against manufacture, distribution, sales and marketing; and

    o  criminal prosecution.

    The imposition of any of these penalties could significantly impair our
business, financial condition and results of operations.

To be successful, our products must be accepted by the health care
community, which can be very slow to adopt or unreceptive to new technologies
and products.

    Our products and those developed by our collaborative partners, if approved
for marketing, may not achieve market acceptance since physicians, patients or
the medical community in general may decide to not accept and utilize these
products. The products that we are attempting to develop may represent
substantial departures from established treatment methods and will compete with
a number of traditional drugs and therapies manufactured and marketed by major
pharmaceutical companies. The degree of market acceptance of any of our
developed products will depend on a number of factors, including:


o    our establishment and demonstration to the medical community of the
     clinical efficacy and safety of our product candidates;

o    our ability to create products that are superior to alternatives currently
     on the market;

o    our ability to establish in the medical community the potential advantage
     of our treatments over alternative treatment methods; and

o    reimbursement policies of government and third-party payors.

    If the health care community does not accept our products for any of the
foregoing reasons, or for any other reason, our business would be materially

The reimbursement status of newly-approved health care products is
uncertain and failure to obtain reimbursement approval could severely limit the
use of our products.

    Significant uncertainty exists as to the reimbursement status of newly
approved health care products, including pharmaceuticals. If we fail to generate
adequate third party reimbursement for the users of our potential products and
treatments, then we may be unable to maintain price levels sufficient to realize
an appropriate return on our investment in product development.

    In both domestic and foreign markets, sales of our products, if any, will
depend in part on the availability of reimbursement from third-party payors,
examples of which include:

    o  government health administration authorities;

    o  private health insurers;

    o  health maintenance organizations; and

    o  pharmacy benefit management companies.

    Both federal and state governments in the United States and foreign
governments continue to propose and pass legislation designed to contain or
reduce the cost of health care through various means. Legislation and
regulations affecting the pricing of pharmaceuticals and other medical products
may change or be adopted before any of our potential products are approved for
marketing. Cost control initiatives could decrease the price that we receive for
any product we may develop in the future. In addition, third-party payors are
increasingly challenging the price and cost-effectiveness of medical products
and services and any of our potential products and treatments may ultimately not
be considered cost effective by these third parties. Any of these initiatives or
developments could materially harm our business.

Our products are likely to be expensive to manufacture, and they may not be
profitable if we are unable to significantly reduce the costs to manufacture

    Both GRN163 and our hESC-based products are likely to be significantly more
expensive to manufacture than most other drugs currently on the market today.
Oligonucleotides are large molecules with complex chemistry, and the cost of
manufacturing even a short oligonucleotide like GRN163 is considerably greater
than the cost of making most small-molecule drugs. Our present manufacturing
processes are conducted at a relatively small scale and are at an early stage of
development. We hope to substantially reduce manufacturing costs by process
improvements, as well as through scale increases. If we are not able to do so,
however, and depending on the pricing of the product, the profit margin on
GRN163 may be significantly less than that of most drugs on the market today.
Similarly, we currently make differentiated cells from hESCs on a laboratory
scale, at a high cost per unit of measure. The cell-based therapies we are
developing based on hESCs will probably require large quantities of cells. We


continue to develop processes to scale up production of the cells in a
cost-effective way. If we cannot continue to improve our manufacturing
processes, we may not be able to charge a high enough price for our cell therapy
products, even if they are safe and effective, to make a profit. If we are
unable to realize significant profits from our potential products, our business
would be materially harmed.

Our activities involve hazardous materials and improper handling of these
materials by our employees or agents could expose us to significant legal and
financial penalties.

    Our research and development activities involve the controlled use of
hazardous materials, chemicals and various radioactive compounds. As a
consequence, we are subject to numerous environmental and safety laws and
regulations, including those governing laboratory procedures, exposure to
blood-borne pathogens and the handling of biohazardous materials. We may be
required to incur significant costs to comply with current or future
environmental laws and regulations and may be adversely affected by the cost of
compliance with these laws and regulations.

    Although we believe that our safety procedures for using, handling, storing
and disposing of hazardous materials comply with the standards prescribed by
state and federal regulations, the risk of accidental contamination or injury
from these materials cannot be eliminated. In the event of such an accident,
state or federal authorities could curtail our use of these materials and we
could be liable for any civil damages that result, the cost of which could be
substantial. Further, any failure by us to control the use, disposal, removal or
storage of, or to adequately restrict the discharge of, or assist in the cleanup
of, hazardous chemicals or hazardous, infectious or toxic substances could
subject us to significant liabilities, including joint and several liability
under certain statutes, and any liability could exceed our resources and could
have a material adverse effect on our business, financial condition and results
of operations. Additionally, an accident could damage our research and
manufacturing facilities and operations.

    Additional federal, state and local laws and regulations affecting us may be
adopted in the future. We may incur substantial costs to comply with these laws
and regulations and substantial fines or penalties if we violate any of these
laws or regulations.

Our stock price has historically been very volatile.

    Stock prices and trading volumes for many biopharmaceutical companies
fluctuate widely for a number of reasons, including factors which may be
unrelated to their businesses or results of operations such as media coverage,
legislation and regulatory measures and the activities of various interest
groups or organizations. This market volatility, as well as general domestic or
international economic, market and political conditions, could materially and
adversely affect the market price of our common stock and the return on your

    Historically, our stock price has been extremely volatile. Between January
1998 and June 30, 2003, our stock has traded as high as $75.88 per share and as
low as $1.41 per share. Between July 1, 2002 and June 30, 2003, the price has
ranged between a high of $9.75 per share and a low of $1.41 per share. The
significant market price fluctuations of our common stock are due to a variety
of factors, including:

o    depth of the market for the common stock;

o    the experimental nature of our prospective products;

o    fluctuations in our operating results;

o    market conditions relating to the biopharmaceutical and pharmaceutical

o    any announcements of technological innovations, new commercial products or
     clinical progress or lack thereof by us, our collaborative partners or our
     competitors; or

o    announcements concerning regulatory developments, developments with respect
     to proprietary rights and our collaborations.

    In addition, the stock market is subject to other factors outside our
control that can cause extreme price and volume fluctuations. Securities class
action litigation has often been brought against companies, including many
biotechnology companies, which then experience volatility in the market price of
their securities. Litigation brought against us could result in substantial


costs and a diversion of management's attention and resources, which could
adversely affect our business.

The sale of a substantial number of shares may adversely affect the market
price for our common stock.

    Sales of substantial number of shares of our common stock in the public
market could significantly and negatively affect the market price for our common
stock. As of September 5, 2003, we had 33,173,997 shares of common stock
outstanding. Of these shares, approximately 19,620,067 shares were issued
(including shares issuable upon conversion or exercise of convertible notes or
warrants) since December 1998 pursuant to private placements. Of these shares,
approximately 15,143,463 shares have been registered pursuant to shelf
registration statements and therefore may be resold (if not sold prior to the
date hereof) in the public market and approximately 4,476,604 of the remaining
shares may be resold pursuant to Rule 144 into the public markets.

Our undesignated preferred stock may inhibit potential acquisition bids;
this may adversely affect the market price for our common stock and the voting
rights of the holders of common stock.

    Our certificate of incorporation provides our Board of Directors with the
authority to issue up to 3,000,000 shares of undesignated preferred stock and to
determine the rights, preferences, privileges and restrictions of these shares
without further vote or action by the stockholders. As of the date of this
prospectus, 50,000 shares of preferred stock have been designated Series A
Junior Participating Preferred Stock and the Board of Directors still has
authority to designate and issue up to 2,950,000 shares of preferred stock. The
rights of the holders of common stock will be subject to, and may be adversely
affected by, the rights of the holders of any preferred stock that may be issued
in the future. The issuance of shares of preferred stock may delay or prevent a
change in control transaction without further action by our stockholders. As a
result, the market price of our common stock may be adversely affected. The
issuance of preferred stock may also result in the loss of voting control by

Provisions in our share purchase rights plan, charter and bylaws, and
provisions of Delaware law, may inhibit potential acquisition bids for us, which
may prevent holders of our common stock from benefiting from what they believe
may be the positive aspects of acquisitions and takeovers.

    Our Board of Directors has adopted a share purchase rights plan, commonly
referred to as a "poison pill". This plan entitles existing stockholders to
rights, including the right to purchase shares of common stock, in the event of
an acquisition of 15% or more of our outstanding common stock. Our share
purchase rights plan could prevent stockholders from profiting from an increase
in the market value of their shares as a result of a change of control of Geron
by delaying or preventing a change of control. In addition, our Board of
Directors has the authority, without further action by our stockholders, to
issue additional shares of common stock, to fix the rights and preferences of,
and to issue authorized but undesignated shares of preferred stock.

    In addition to our share purchase rights plan and the undesignated preferred
stock, provisions of our charter documents and bylaws may make it substantially
more difficult for a third party to acquire control of us and may prevent
changes in our management, including provisions that:

    o  prevent stockholders from taking actions by written consent;

    o  divide the Board of Directors into separate classes with terms of office
       that are structured to prevent all of the directors from being elected in
       any one year; and

    o set forth procedures for nominating directors and submitting proposals for
consideration at stockholders' meetings.

    Provisions of Delaware law may also inhibit potential acquisition bids for
us or prevent us from engaging in business combinations. Either collectively or
individually, these provisions may prevent holders of our common stock from
benefiting from what they may believe are the positive aspects of acquisitions
and takeovers, including the potential realization of a higher rate of return on
their investment from these types of transactions.


                           FORWARD-LOOKING STATEMENTS

         This prospectus and the documents incorporated by reference into this
prospectus contain forward-looking statements that are based on current
expectations, estimates and projections about our industry, management's
beliefs, and assumptions made by management. Words such as "anticipates,"
"expects," "intends," "plans," "believes," "seeks," "estimates," and variations
of such words and similar expressions are intended to identify such
forward-looking statements. These statements are not guarantees of future
performance and are subject to certain risks, uncertainties and assumptions that
are difficult to predict; therefore, actual results may differ materially from
those expressed or forecasted in any forward-looking statements. The risks and
uncertainties include those noted in "Risk Factors" above and in the documents
incorporated by reference. We undertake no obligation to update publicly any
forward-looking statements, whether as a result of new information, future
events or otherwise.

                                 USE OF PROCEEDS

         We are filing the registration statement of which this prospectus is a
part under our contractual obligation to the holders named in the section
entitled "Selling Stockholders." We will not receive any of the proceeds from
the issuance of shares of our common stock to the selling stockholders or the
resale of these shares by such selling stockholder.

                         DESCRIPTION OF OUR COMMON STOCK

            The following summary is a general description of our common stock.
Complete details can be found in our Charter and Bylaws, copies of which are on
file with the Commission as exhibits to registration statements previously filed
by us. See "Where You Can Find More Information."

            We have authority to issue 100,000,000 shares of common stock, $.001
par value per share. As of September 10, 2003, we had 33,202,985 shares of
common stock outstanding.

            The holders of our common stock are entitled to one vote per share
on all matters to be voted upon by the stockholders. Subject to preferences that
may be applicable to any outstanding shares of our preferred stock, the holders
of common stock are entitled to receive ratably such dividends, if any, as may
be declared from time to time by our Board of Directors out of funds legally
available for that purpose. In the event of a liquidation, dissolution or
winding up of the Company, the holders of our common stock are entitled to share
ratably in all assets remaining after payment of liabilities, subject to
preferences applicable to shares of our preferred stock, if any, then
outstanding. The common stock has no preemptive or conversion rights or other
subscription rights. There are no redemption or sinking fund provisions
available to the common stock. All outstanding shares of our common stock are,
and the shares of common stock offered by this prospectus will be, fully paid
and nonassessable.

Transfer Agent and Registrar

       The transfer agent and registrar for the common stock is U.S. Stock
                             Transfer Corporation.

                              SELLING STOCKHOLDERS

         The following table sets forth the name of the selling stockholders,
the number of shares of common stock owned beneficially by each selling
stockholder as of September 10, 2003, the number of shares which may be offered
pursuant to this prospectus and the number of shares to be owned by each selling
stockholder after this offering. Each of the selling stockholders may sell up to
100,000 shares of our common stock pursuant to this prospectus. Since each
selling stockholder may offer all, some or none of its common stock, no
definitive estimate as to the number of shares thereof that will be held by the
selling stockholders after the offering can be provided. In addition, since the
date the selling stockholders provided information regarding its ownership of
the shares, it may have sold, transferred or otherwise disposed of all or a
portion of their shares of common stock in transactions exempt from the
registration requirements of the Securities Act. Information concerning the
selling stockholders may change from time to time and, when necessary, any
changed information will be set forth in a prospectus supplement to this


         On August 16, 2002, in consideration for investment banking services
provided under an agreement with Lazard Freres & Co. LLC ("Lazard"), we issued
to Lazard a warrant to purchase up to 100,000 shares of our common stock at a
purchase price of $4.20 per share, pursuant to a common stock warrant agreement
dated as of August 16, 2002. On September 4, 2002 and March 12, 2003, in
consideration for investment banking services provided under an agreement with
Burrill & Company LLC ("Burrill"), we granted to Burrill a warrant to purchase
50,000 shares of our common stock at a purchase price of $4.00 per share and a
warrant to purchase 50,000 shares of our common stock at a purchase price of
$3.00 per share, pursuant to common stock warrant agreements dated as of
September 4, 2002 and March 12, 2003. Each warrant is exercisable for a period
of ten years after the date of issuance The number of shares that we have
registered is based upon the maximum number of shares issuable upon exercise of
these warrants.

         To our knowledge, the selling stockholder named in the table has sole
voting and investment power with respect to all shares of common stock
beneficially owned. This information is based upon information provided by the
selling stockholder.

                                                             Maximum Number of
                                                             Shares Available
                                       Total Number of       Pursuant to this       Shares Owned After     Percentage
               Name                    Shares Held (1)       Prospectus (1)        Offering Number (2)         (3)
------------------------               ----------------      ------------------    ---------------------   ----------
Lazard Freres & Co. LLC                             0              100,000                 100,000              *

Burrill & Company LLC                               0              100,000                 100,000              *

(1) Based on information available as of September 10, 2003.

(2) Assumes the sale of all shares of common stock offered by this prospectus.

(3) Based on 33,202,985 shares of common stock outstanding as of September 10,

*    Less than 1%


                              PLAN OF DISTRIBUTION

         We are registering 200,000 shares of our common stock on behalf of the
selling stockholders. The selling stockholders and any of their pledgees,
assignees and successors-in-interest may, from time to time, sell any or all of
the shares of common stock offered hereby on any stock exchange, market or
trading facility on which the shares are traded or in private transactions.
These sales may be at fixed or negotiated prices. The selling stockholders may
use any one or more of the following methods when selling shares:

o    sales on the Nasdaq National Market;

o    sales in the over-the-counter market;

o    ordinary brokerage transactions and transactions in which the broker-dealer
     solicits purchasers;

o    block trades in which the broker-dealer will attempt to sell the shares as
     agent but may position and resell a portion of the block as principal to
     facilitate the transaction;

o    purchases by a broker-dealer as principal and resale by the broker-dealer
     for its account;

o    an exchange distribution in accordance with the rules of the applicable

o    privately negotiated transactions;

o    short sales;

o    transactions in which broker-dealers agree with the selling stockholder to
     sell a specified number of such shares at a stipulated price per share;

o    a combination of any such methods of sale; and

o    any other method permitted pursuant to applicable law.

                  The selling stockholders may also sell the shares directly to
market makers acting as principals and/or broker-dealers acting as agents for
themselves or their customers. These broker-dealers may receive compensation in
the form of discounts, concessions or commissions from the selling stockholders
and/or the purchasers of shares for whom the broker-dealers may act as agents or
to whom they sell as principal or both, which compensation as to a particular
broker-dealer might be in excess of customary commissions. Market makers and
block purchasers purchasing the shares will do so for their own account and at
their own risk. It is possible that the selling stockholders will attempt to
sell shares of common stock in block transactions to market makers or other
purchasers at a price per share which may be below the then market price. The
selling stockholders cannot assure that all or any of the shares offered in this
prospectus will be issued to, or sold by, the selling stockholders. The selling
stockholders and any brokers, dealers or agents, upon effecting the sale of any
of the shares offered in this prospectus, may be deemed "underwriters" as that
term is defined under the Securities Act or the Exchange Act, or the rules and
regulations under such acts.

         The selling stockholders, alternatively, may sell all or any part of
the shares offered in this prospectus through an underwriter. To our knowledge,
neither of the selling stockholders has entered into any agreement with a
prospective underwriter and we cannot assure you that any such agreement will be
entered into. If the selling stockholders entered into this type of an agreement
or agreements, the relevant details will be set forth in a supplement or
revisions to this prospectus.

         The selling stockholders and any other persons participating in the
sale or distribution of the shares will be subject to applicable provisions of
the Exchange Act and the rules and regulations under such act, including,
without limitation, Regulation M. These provisions may restrict certain
activities of, and limit the timing of purchases and sales of any of the shares
by, the selling stockholders or any other person. Furthermore, under Regulation
M, persons engaged in a distribution of securities are prohibited from


simultaneously engaging in market making and certain other activities with
respect to the securities for a specified period of time prior to the
commencement of the distributions, subject to specified exceptions or
exemptions. All of these limitations may affect the marketability of the shares.

         The selling stockholders also may sell all or a portion of their shares
in open market transactions in reliance upon Rule 144 under the Securities Act,
provided they meet the criteria and conform to the requirements of Rule 144.

                                  LEGAL MATTERS

         Latham & Watkins LLP will pass on the validity of the issuance of the
shares of common stock offered by this prospectus.


         The consolidated financial statements of Geron Corporation appearing in
Geron's Annual Report (Form 10-K) for the year ended December 31, 2002, have
been audited by Ernst & Young LLP, independent auditors, as set forth in their
report thereon included therein and incorporated herein by reference. Such
consolidated financial statements are incorporated herein by reference in
reliance upon such report given on the authority of such firm as experts in
accounting and auditing.


         Our bylaws provide for indemnification of our directors and officers to
the fullest extent permitted by law. Insofar as indemnification for liabilities
under the Securities Act may be permitted to directors, officers or controlling
persons of Geron pursuant to Geron's Certificate of Incorporation, bylaws and
the Delaware General Corporation Law, Geron has been informed that in the
opinion of the Securities and Exchange Commission such indemnification is
against public policy as expressed in the Securities Act and is therefore



         We file annual, quarterly and special reports, proxy statements and
other information with the SEC. We make available free of charge on or through
our Internet website our annual reports on Form 10-K, quarterly reports on Form
10-Q, current reports on Form 8-K and all amendments to those reports as soon as
reasonably practicable after they are electronically filed with, or furnished
to, the Securities and Exchange Commission. Our Internet website address is
"". You may read and copy any document we file at the SEC's public
reference room located at 450 Fifth Street, N.W., Washington, D.C. 20549. Please
call the SEC at 1-800-SEC-0330 for further information on the public reference
room. Our SEC filings are also available to the public at the SEC's website at You may also inspect copies of these materials and other
information about us at the offices of the Nasdaq Stock Market, Inc., National
Market System, 1735 K Street, N.W., Washington, D.C. 20006-1500.


         The SEC allows us to "incorporate by reference" the information we file
with them which means that we can disclose important information to you by
referring you to those documents instead of having to repeat the information in
this prospectus. The information incorporated by reference is considered to be
part of this prospectus, and later information that we file with the SEC will
automatically update and supersede this information. We incorporate by reference
the documents listed below and any future filings made with the SEC under
Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934 until
the selling stockholders sell all the shares:

o    Our annual report on Form 10-K for the fiscal year ended December 31, 2002;

o    Our definitive proxy statement filed pursuant to Section 14 of the Exchange
     Act in connection with our 2003 Annual Meeting of Stockholders dated April
     13, 2003;

o    Our current reports on Form 8-K filed January 22, 2003, April 7, 2003,
     April 8, 2003, April 9, 2003, April 30, 2003, May 27, 2003, June 4, 2003,
     July 1, 2003, July 30, 2003 and September 2, 2003;

o    Our quarterly report on Form 10-Q for the quarter ended March 31, 2003;

o    Our quarterly report on Form 10-Q for the quarter ended June 30, 2003; and

o    The description of our common stock set forth in our registration statement
     on Form 8-A, filed with the Commission on June 13, 1996 (File No. 0-20859).

         All documents we file under Section 13(a), 13(c), 14 or 15(d) of the
Exchange Act after the date of this registration statement and prior to the
filing of a post-effective amendment that indicates that all securities offered
have been sold or that deregisters all securities then remaining unsold, shall
be deemed to be incorporated by reference in this registration statement and to
be a part of it from the respective dates of filing those 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
modifies or supersedes that statement. Any statement so modified or superseded
shall not be deemed, except as so modified or superseded, to constitute a part
of this registration statement.

         We will furnish without charge to you, on written or oral request, a
copy of any or all of the documents incorporated by reference, including
exhibits to these documents. You should direct any requests for documents to
David L. Greenwood, Chief Financial Officer, Geron Corporation, 230 Constitution
Drive, Menlo Park, California 94025, telephone: (650) 473-7700.


                         200,000 SHARES OF COMMON STOCK

                                GERON CORPORATION


                                September 11, 2003

You should rely only on the information contained or incorporated by reference
in this prospectus. We have not authorized anyone to provide you with different
information. You should not assume that the information contained or
incorporated by reference in this prospectus is accurate as of any date other
than the date of this prospectus. We are not making an offer of these securities
in any state where the offer is not permitted.


                                     PART II


Item 14.   Other Expenses of Issuance and Distribution.

         The following sets forth the costs and expenses, all of which shall be
borne by the Registrant, in connection with the offering of the securities
pursuant to this Registration Statement:

         Registration Fee                               $      140
         Accounting Fees and Expenses                   $   10,000*
         Legal Fees and Expenses                        $   10,000*
         Miscellaneous                                  $    1,500*

         Total                                          $   21,640*

         *    Estimated

Item 15.   Indemnification of Directors and Officers.

         Section 145(a) of the General Corporation Law of the State of Delaware
(the "DGCL") provides that a Delaware corporation may indemnify any person who
was or is a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative (other than an action by or in the right of the corporation) by
reason of the fact that such person is or was a director, officer, employee or
agent of the corporation or is or was serving at the request of the corporation
as a director, officer, employee or agent of another corporation or enterprise,
against expenses, judgments, fines and amounts paid in settlement actually and
reasonably incurred by such person in connection with such action, suit or
proceeding if he acted in good faith and in a manner he reasonably believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal action or proceeding, had no cause to believe his conduct was

         Section 145(b) of the DGCL provides that a Delaware corporation may
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action or suit by or in the right of
corporation to procure a judgment in its favor by reason of the fact that such
person acted in any of the capacities set forth above, against expenses actually
and reasonably incurred by such person in connection with the defense or
settlement of such action or suit if he or she acted under similar standards to
those set forth above, except that no indemnification may be made in respect to
any claim, issue or matter as to which such person shall have been adjudged to
be liable to the corporation unless and only to the extent that the court in
which such action or suit was brought shall determine that despite the
adjudication of liability, but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to be indemnified for such
expenses which the court shall deem proper.

         Section 145 of the DGCL further provides that to the extent a director
or officer of a corporation has been successful in the defense of any action,
suit or proceeding referred to in subsection (a) and (b) or in the defense of
any claim, issue or matter therein, he shall be indemnified against expenses
actually and reasonably incurred by him in connection therewith; that
indemnification provided for by Section 145 shall not be deemed exclusive of any
other rights to which the indemnified party may be entitled; and that the
corporation may purchase and maintain insurance on behalf of a director or
officer of the corporation against any liability asserted against such officer
or director and incurred by him or her in any such capacity or arising out of
his or her status as such, whether or not the corporation would have the power
to indemnify him or her against such liabilities under Section 145.

         As permitted by Section 102(b)(7) of the DGCL, our Certificate of
Incorporation provides that a director shall not be liable to us or our
stockholders for monetary damages for breach of fiduciary duty as a director.
However, this provision does not eliminate or limit the liability of a director
for acts or omissions not in good faith or for breaching his or her duty of
loyalty, engaging in intentional misconduct or knowingly violating the law,
paying a dividend or approving a stock repurchase which was illegal, or
obtaining an improper personal benefit. A provision of this type has no effect
on the availability of equitable remedies, such as injunction or rescission, for


breach of fiduciary duty. Our Certificate of Incorporation requires that
directors and officers be indemnified to the maximum extent permitted by
Delaware law.

Item 16.   Exhibits.

         See Exhibit Index.

Item 17.   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 the 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 and of the estimated
         maximum offering price may be reflected in the form of prospectus filed
         with the Commission 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 subparagraphs (i) and (ii) do not apply if the
         information required to be included in a post-effective amendment by
         those paragraphs is contained in the periodic reports filed 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, each post-effective amendment shall be treated as a new
registration statement of the securities offered, and the offering of the
securities at that time to be deemed the initial bona fide offering.

         (3) To file a post-effective amendment to remove from registration any
of the securities that remain unsold at the end 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 the
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.

         (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 the foregoing provisions, or otherwise,
the registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act 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 Act and will
be governed by the final adjudication of such issue.



         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-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Menlo Park, State of California, on September 11, 2003.

                               GERON CORPORATION

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

                                POWER OF ATTORNEY

         KNOW ALL BY THESE PERSONS PRESENT, that the persons whose signatures
appear below do hereby constitute and appoint Thomas B. Okarma, David L.
Greenwood, and William D. Stempel, or any of them, our true and lawful
attorneys-in-fact and agents, each with full power to sign for us or any of us
in our names and in any and all capacities, any and all amendments (including
post-effective amendments) to this Registration Statement, or any related
registration statement that is to be effective upon filing pursuant to Rule
462(b) under the Securities Act of 1933, as amended, and to file the same, with
all exhibits thereto and other documents required in connection therewith with
the Securities and Exchange Commission hereby do ratifying and confirming all
that each of said attorneys-in-fact, or either of them, or his or her substitute
or substitutes, shall do or cause to be done by virtue thereof.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

Signature                                   Title                                               Date

  /s/  Thomas B. Okarma                     Chief Executive Officer, President and Director     September 11, 2003
             Thomas B. Okarma               (principal executive officer)

  /s/  David L. Greenwood                   Senior Vice President and Chief Financial Officer   September 11, 2003
            David L. Greenwood              (principal financial and accounting officer)

  /s/  Alexander E. Barkas                  Director                                            September 11, 2003
           Alexander E. Barkas

  /s/  Edward V. Fritzky                    Director                                            September 11, 2003
            Edward V. Fritzky

  /s/  Thomas D. Kiley                      Director                                            September 11, 2003
             Thomas D. Kiley

  /s/  John P. Walker                       Director                                            September 11, 2003
              John P. Walker

  /s/  Patrick J. Zenner                    Director                                            September 11, 2003
            Patrick J. Zenner


                                  EXHIBIT INDEX

Exhibits      Description
--------      -----------

    4.1       Warrant dated August 16, 2002, by and between Registrant and
              Lazard Freres & Co. LLC.
    4.2       Warrant dated September 4, 2002, by and between Registrant and
              Burrill & Company LLC.
    4.3       Warrant dated March 12, 2003, by and between Registrant and
              Burrill & Company LLC.
    5.1       Opinion of Latham & Watkins LLP.
   23.1       Consent of Latham & Watkins LLP (included in Exhibit 5.1).
   23.2       Consent of Ernst & Young LLP, Independent Auditors.
   24.1       Power of Attorney (included on the signature page to this
              Registration Statement).