Document:

EXHIBIT 4.1

                         COMMON STOCK PURCHASE AGREEMENT

     THIS COMMON STOCK PURCHASE AGREEMENT ("Agreement") is made and entered into
as of March 1, 2006 (the "Effective Date"), by and between GERON CORPORATION, a
Delaware corporation having its principal place of business at 230 Constitution
Drive, Menlo Park, California 94025 ("Geron"), and Cambrex Bio Science
Walkersville, Inc., a Delaware corporation having its principal place of
business at 8830 Biggs Ford Road, Walkersville, Maryland 21793 ("CBSW").
Capitalized terms not otherwise defined herein shall have the meaning set forth
in the MSA and Project Order No. 1.

     A.   Geron and CBSW are the parties to that certain Master Services
          Agreement, dated as of September 1, 2005 (the "MSA"), pursuant to
          which CBSW has agreed to perform certain services on behalf of Geron
          related to the manufacture of a product containing human cells
          intended for therapeutic use in humans on the terms set forth therein.

     B.   Geron and CBSW entered into Project Order No. 1 to the MSA (the
          "Project Order No. 1") effective September 1, 2005, pursuant to which
          Geron is entitled, subject to certain conditions, to pay any
          compensation owed to CBSW for Services performed under Project Order
          No. 1 either in cash or in Geron's Common Stock (the "Shares").

     C.   Subject to the terms and conditions of the Second Amendment to Project
          Order No.1, dated as of March 1, 2006 ("Amendment No. 2"), Geron and
          CBSW have agreed that Geron shall, subject to certain conditions, be
          entitled to pay up to US$4,500,000 for Services under Project Order
          No. 1 by delivery of Shares, to be delivered in installment payments
          of not more than US$1,000,000 each.

THE PARTIES AGREE AS FOLLOWS:

     1.   ISSUANCE OF SHARES; ADJUSTMENTS.

          1.1  As payment of the first Installment Payment specified in Project
               Order No. 1, Geron will issue and deliver certificates for
               113,895 Shares. Upon issuance and delivery of the certificate(s)
               for the Shares, all Shares shall be duly authorized and validly
               issued and represent fully paid shares of Geron's Common Stock.

     2.   CLOSING; DELIVERY.

          2.1  The consummation of the transaction contemplated by this
               Agreement (a "Closing") shall be held at such time and place as
               is mutually agreed upon between the parties, but in any event no
               later than five (5) business days after the Effective Date of
               this Agreement (the "Closing Date"). At the Closing, Geron shall
               deliver to CBSW one or more certificates representing all of the
               Shares, which Shares shall be issued in the name of CBSW or its
               designee and in such denominations as CBSW shall specify.

          2.2  Geron's obligations to issue and deliver the stock certificate(s)
               representing the Shares to CBSW at the Closing shall be subject
               to the following conditions, which may be waived by Geron:

                                       1

<PAGE>

               2.2.1 the covenants and obligations that CBSW is required to
                    perform or to comply with pursuant to this Agreement, at or
                    prior to the Closing, must have been duly performed and
                    complied with in all material respects; and

               2.2.2 the representations and warranties made by CBSW herein
                    shall be true and correct in all material respects as of the
                    Closing Date.

          2.3  CBSW's obligation to accept delivery of the stock certificate(s)
               representing the Shares at the Closing shall be subject to the
               following conditions, any one or more of which may be waived by
               CBSW:

               2.3.1 the covenants and obligations that Geron is required to
                    perform or to comply with pursuant to this Agreement, at or
                    prior to the Closing, must have been duly performed and
                    complied with in all material respects;

               2.3.2 Geron shall have available under its Certificate of
                     Incorporation sufficient authorized shares of Common Stock
                     to issue the Shares to CBSW; and

               2.3.3 the representations and warranties made by Geron herein
                    shall be true and correct in all material respects as of the
                    Closing Date.

     3.   RESTRICTIONS ON RESALE OF SHARES.

          3.1  Legends. CBSW understands and acknowledges that the Shares are
               not registered under the Securities Act of 1933 (the "Act"), and
               that under the Act and other applicable laws CBSW may be required
               to hold such Shares for an indefinite period of time. Each stock
               certificate representing Shares shall bear the following legends:

               "THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
               THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"). ANY TRANSFER
               OF SUCH SECURITIES SHALL BE INVALID UNLESS A REGISTRATION
               STATEMENT UNDER THE ACT IS IN EFFECT AS TO SUCH TRANSFER OR, IN
               THE OPINION OF COUNSEL REASONABLY ACCEPTABLE TO GERON, SUCH
               REGISTRATION IS UNNECESSARY FOR SUCH TRANSFER TO COMPLY WITH THE
               ACT. THE SECURITIES REPRESENTED HEREBY ARE SUBJECT TO THE TERMS
               OF THE COMMON STOCK PURCHASE AGREEMENT, DATED MARCH 1, 2006. A
               COPY OF THE AGREEMENT CAN BE OBTAINED FROM THE SECRETARY OF
               GERON."

          3.2  Limits on Sales. CBSW agrees that if it decides to resell some or
               all of the Shares, it will do so only in an appropriate manner
               through orderly sales executed through a top-tier brokerage firm,
               and based upon whether the shares are registered or unregistered,
               i.e., on the Nasdaq National Market or in a Rule 144A compliant
               transaction.

          3.3  Further Limitations. The Company shall not be required (i) to
               transfer on its books any Shares that have been sold or otherwise
               transferred in violation of any of the provisions of this
               Agreement or applicable securities laws; or (ii) to treat as
               owner of such Shares or to accord the right to vote or pay
               dividends to any purchaser or other transferee to whom such
               Shares shall have been so transferred in violation of any of the
               provisions of this Agreement or applicable securities laws.

     4.   REGISTRATION RIGHTS

          4.1  Geron agrees to make commercially reasonable efforts to file with
               the Securities and Exchange Commission (the "Commission") within
               ten (10) business days after the Closing Date, a registration
               statement under the Act (the "Registration Statement"), on Form
               S-3 or other appropriate form, so as to permit a non-underwritten
               public offering and resale of the Shares under the Act by CBSW.
               Geron agrees to diligently pursue making the Registration
               Statement effective. Geron will make commercially reasonable
               efforts to notify CBSW of the effectiveness of the Registration
               Statement within one (1) business day of receiving notice from

                                       2

<PAGE>

               the Commission declaring the Registration Statement effective,
               but no later than the close of business (Pacific Time) of the
               second business day after receipt of such notice from the
               Commission.

          4.2  Geron shall notify CBSW as promptly as possible of any review
               initiated by the Commission with respect to any such Registration
               Statement.

          4.3  Geron will maintain the Registration Statement and any
               post-effective amendment thereto filed under this Section 4
               effective under the Act until the earliest of (i) the date that
               none of the Shares covered by such Registration Statement are
               issued and outstanding, (ii) the date that all of the Shares have
               been sold pursuant to such Registration Statement, (iii) the date
               CBSW receives an opinion of counsel to Geron, which counsel shall
               be reasonably acceptable to CBSW, that the Shares may be sold
               under the provisions of Rule 144, (iv) the date that all Shares
               have been otherwise transferred to persons who may trade such
               shares without restriction under the Act, and Geron has delivered
               a new certificate or other evidence of ownership for such
               securities not bearing a restrictive legend, or (v) the date all
               Shares may be sold at any time pursuant to Rule 144(k) or any
               similar provision then in effect under the Act in the opinion of
               counsel to Geron, which counsel shall be reasonably acceptable to
               CBSW.

          4.4  Geron, at its expense, shall furnish to CBSW with respect to the
               Shares registered under the Registration Statement such
               reasonable number of copies of the Registration Statement,
               prospectuses and preliminary prospectuses in conformity with the
               requirements of the Act and such other documents as CBSW may
               reasonably request, in order to facilitate the public sale or
               other disposition of all or any of the Shares by CBSW, provided,
               however, that the obligation of Geron to deliver copies of
               prospectuses or preliminary prospectuses to CBSW shall be subject
               to the receipt by Geron of reasonable assurances from CBSW that
               CBSW will comply with the applicable provisions of the Act and of
               such other securities or blue sky laws as may be applicable in
               connection with any use of such prospectuses or preliminary
               prospectuses.

          4.5  All fees, disbursements and out-of-pocket expenses and costs
               incurred by Geron in connection with the preparation and filing
               of the Registration Statement under Section 4.1 and in complying
               with applicable securities and Blue Sky laws (including, without
               limitation, all attorneys' fees of Geron) shall be borne by
               Geron. CBSW shall bear the cost of all fees and expenses of
               CBSW's counsel.

          4.6  Geron will advise CBSW promptly after it shall receive notice or
               obtain knowledge of the issuance of any stop order by the
               Commission delaying or suspending the effectiveness of the
               Registration Statement or of the initiation of any proceeding for
               that purpose, and Geron will use its commercially reasonable
               efforts to prevent the issuance of any stop order or to obtain
               its withdrawal as promptly as possible if such stop order should
               be issued.

          4.7  With a view to making available to CBSW the benefits of Rule 144
               (or its successor rule) and any other rule or regulation of the
               Commission that may at the time permit CBSW to sell the Shares to
               the public without registration, Geron covenants and agrees to:
               (i) make and keep public information available, as those terms
               are understood and defined in Rule 144, until the earliest of (A)
               such date as all of the Shares may be resold pursuant to Rule
               144(k) or any other rule of similar effect or (B) such date as
               all of the Shares shall have been resold; and (ii) file with the
               Commission in a timely manner all reports and other documents
               required of Geron under the Act and under the Exchange Act of
               1934, as amended.

                                       3

<PAGE>

          4.8  CBSW will cooperate with Geron in all respects in connection with
               this Agreement, including timely supplying all information
               reasonably requested by Geron (which shall include all
               information regarding CBSW and proposed manner of sale of the
               Shares required to be disclosed in any Registration Statement)
               and executing and returning all documents reasonably requested in
               connection with the registration and sale of the Shares and
               entering into and performing their obligations under any
               underwriting agreement, if the offering is an underwritten
               offering, in usual and customary form, with the managing
               underwriter or underwriters of such underwritten offering.
               Nothing in this Agreement shall obligate CBSW to consent to be
               named as an underwriter in any Registration Statement.

     5.   INDEMNIFICATION.

          5.1  Geron agrees to indemnify and hold harmless CBSW (and each
               person, if any, who controls CBSW within the meaning of Section
               15 of the Act, and each officer and director of CBSW) against any
               and all losses, claims, damages or liabilities (or actions or
               proceedings in respect thereof), joint or several, directly or
               indirectly based upon or arising out of (i) any untrue statement
               or alleged untrue statement of any material fact contained in the
               Registration Statement, any preliminary prospectus, final
               prospectus or summary prospectus contained therein or used in
               connection with the offering of the Shares, or any amendment or
               supplement thereto, or (ii) any omission or alleged omission to
               state a material fact required to be stated therein or necessary
               to make the statements therein not misleading; and Geron will
               reimburse each such indemnified party for any legal or any other
               expenses reasonably incurred by them in connection with
               investigating, preparing, pursuing or defending any such loss,
               claim, damage, liability, action or proceeding, except insofar as
               any such loss, claim, damage, liability, action, proceeding or
               expense arises out of or is based upon (A) an untrue statement or
               alleged untrue statement or omission or alleged omission made in
               the Registration Statement, any such preliminary prospectus,
               final prospectus, summary prospectus, amendment or supplement in
               reliance upon and in conformity with written information
               furnished to Geron by CBSW or such other person expressly for use
               in the preparation thereof, (B) the failure of CBSW to comply
               with its covenants and agreements contained in Sections 7.1 or
               7.5.2 hereof or (C) any misstatement or omission in any
               prospectus that is corrected in any subsequent prospectus that
               was delivered to CBSW prior to the pertinent sale or sales by
               CBSW. Such indemnity shall remain in full force and effect,
               regardless of any investigation made by such indemnified party
               and shall survive the transfer of the Shares by CBSW.

          5.2  CBSW agrees to indemnify and hold harmless Geron (and each
               person, if any, who controls Geron within the meaning of Section
               15 of the Act, each officer of Geron who signs the Registration
               Statement and each officer and director of Geron) from and
               against losses, claims, damages or liabilities (or actions or
               proceedings in respect thereof), joint or several, directly or
               indirectly based upon or arising out of, (i) any failure of CBSW
               to comply with the covenants and agreements contained in Sections
               7.1 and 7.5.2 hereof or (ii) any untrue statement of a material
               fact contained in the Registration Statement or any omission of a
               material fact required to be stated in the Registration Statement
               or necessary in order to make the statements in the Registration
               Statement not misleading if such untrue statement or omission was
               made in reliance upon and in conformity with written information
               furnished to Geron by or on behalf of CBSW specifically for use
               in preparation of the Registration Statement; provided, however,
               that CBSW shall not be liable in any such case for (A) any untrue
               statement or omission in the Registration Statement, prospectus,
               or other such document which statement is corrected by CBSW and
               delivered to Geron prior to the sale from which such loss
               occurred, (B) any untrue statement or omission in any prospectus
               which is corrected by CBSW in any subsequent prospectus, or
               supplement or amendment thereto, and delivered to Geron prior to

                                       4

<PAGE>

               the sale or sales from which a loss or liability arose, or (C)
               any failure by Geron to fulfill any of its obligations under
               Section 5.1 hereof.

          5.3  Promptly after receipt by any indemnified person of a notice of a
               claim or the beginning of any action in respect of which
               indemnity is to be sought against an indemnifying person pursuant
               to this Section 5, such indemnified person shall notify the
               indemnifying person in writing of such claim or of the
               commencement of such action, but the omission to so notify the
               indemnifying party will not relieve it from any liability which
               it may have to any indemnified party under this Section 5 (except
               to the extent that such omission materially and adversely affects
               the indemnifying party's ability to defend such action) or from
               any liability otherwise than under this Section 5. Subject to the
               provisions hereinafter stated, in case any such action shall be
               brought against an indemnified person, the indemnifying person
               shall be entitled to participate therein, and, to the extent that
               it shall elect by written notice delivered to the indemnified
               party promptly after receiving the aforesaid notice from such
               indemnified party, shall be entitled to assume the defense
               thereof, with counsel reasonably satisfactory to such indemnified
               person. After notice from the indemnifying person to such
               indemnified person of its election to assume the defense thereof,
               such indemnifying person shall not be liable to such indemnified
               person for any legal expense subsequently incurred by such
               indemnified person in connection with the defense thereof,
               provided, however, that if there exists or shall exist a conflict
               of interest that would make inappropriate, in the reasonable
               opinion of counsel to the indemnified person, for the same
               counsel to represent both the indemnified person and such
               indemnifying person or any affiliate or associate thereof, the
               indemnified person shall be entitled to retain its own counsel at
               the expense of such indemnifying person; provided, however, that
               no indemnifying person shall be responsible for the fees and
               expenses of more than one separate counsel (together with
               appropriate local counsel) for all indemnified parties. In no
               event shall any indemnifying person be liable in respect to any
               amounts paid in settlement of any action unless the indemnifying
               person shall have approved the terms of such settlement. No
               indemnifying person shall, without the prior written consent of
               the indemnified person, effect any settlement of any pending or
               threatened proceeding in respect of which any indemnified person
               is a party, unless such settlement includes an unconditional
               release of such indemnified person from all liability on claims
               that are the subject matter of such proceeding.

          5.4  The provisions of this Section 5 shall survive the termination of
               this Agreement.

     6.   REPRESENTATIONS AND ACKNOWLEDGEMENT OF GERON.

     Geron hereby represents, warrants and covenants to CBSW as follow:

          6.1  Organization, Good Standing and Qualification. Geron is a
               corporation duly organized, validly existing and in good standing
               under the laws of the State of Delaware and has all requisite
               corporate power and authority to carry on its business as now
               conducted and as presently proposed to be conducted. Geron is
               duly qualified to transact business and is in good standing as a
               foreign corporation in each jurisdiction in which the failure to
               so qualify would have a material adverse effect on its business
               or properties.

          6.2  Authorization. Geron has full right, power, authority and
               capacity to enter into this Agreement and to consummate the
               transactions contemplated hereby and thereby and has taken all
               necessary action to authorize the execution, delivery and
               performance of this Agreement. Upon execution and delivery, this
               Agreement will constitute a valid and binding obligation of Geron
               enforceable against Geron in accordance with its terms, except as
               such enforceability may be limited by applicable bankruptcy,
               insolvency, reorganization, moratorium, fraudulent transfer,
               liquidation or similar laws relating to, or affecting generally,

                                       5

<PAGE>

               the enforcement of creditor's rights and remedies or by other
               equitable principles of general application from time to time in
               effect.

          6.3  Valid Issuance of Common Stock. The Shares, when issued, sold and
               delivered in accordance with the terms hereof for the
               consideration expressed herein, will be duly and validly
               authorized and issued, fully paid and nonassessable and free of
               restrictions on transfer other than restrictions on transfer
               under this Agreement and applicable state and federal securities
               laws.

          6.4  Legal Proceedings and Orders. There is no action, suit,
               proceeding or investigation pending or threatened against Geron
               that questions the validity of this Agreement or the right of
               Geron to enter into this Agreement or to consummate the
               transactions contemplated hereby, nor is Geron aware of any basis
               for any of the foregoing. Geron is neither a party nor subject to
               the provisions of any order, writ, injunction, judgment or decree
               of any court or government agency or instrumentality that would
               affect the ability of Geron to enter into this Agreement or to
               consummate the transactions contemplated hereby.

     7.   REPRESENTATIONS AND ACKNOWLEDGMENTS OF CBSW.

     CBSW hereby represents, warrants, acknowledges and agrees that:

          7.1  Investment. CBSW is acquiring the Shares for CBSW's own account,
               and not directly or indirectly for the account of any other
               person. CBSW is acquiring the Shares for investment and not with
               a view to distribution or resale thereof, except in compliance
               with the Act and any applicable state law regulating securities.

          7.2  Access to Information. CBSW has consulted with its own attorney,
               accountant, or investment advisor as CBSW has deemed advisable
               with respect to the investment and has determined its suitability
               for CBSW. CBSW has had the opportunity to ask questions of, and
               to receive answers from, appropriate executive officers of Geron
               with respect to the terms and conditions of the transactions
               contemplated hereby and with respect to the business, affairs,
               financial condition and results of operations of Geron. CBSW has
               had access to such financial and other information as is
               necessary in order for CBSW to make a fully informed decision as
               to investment in Geron, and has had the opportunity to obtain any
               additional information necessary to verify any of such
               information to which CBSW has had access. CBSW acknowledges that
               neither Geron nor any of its officers, directors, employees,
               agents, representatives, or advisors have made any representation
               or warranty other than those specifically expressed herein.

          7.3  Business and Financial Expertise. CBSW further represents and
               warrants that it has such business or financial expertise as to
               be able to evaluate its investment in Geron and purchase of the
               Shares.

          7.4  Speculative Investment. CBSW acknowledges that the investment in
               Geron represented by the Shares is highly speculative in nature
               and is subject to a high degree of risk of loss in whole or in
               part; the amount of such investment is within CBSW's risk capital
               means and is not so great in relation to CBSW's total financial
               resources as would jeopardize the personal financial needs of
               CBSW in the event such investment were lost in whole or in part.

          7.5  Unregistered Securities. CBSW acknowledges that:

               7.5.1 CBSW must bear the economic risk of investment for an
                    indefinite period of time because the Shares have not been
                    registered under the Act and therefore cannot and will not
                    be sold unless they are subsequently registered under the

                                       6

<PAGE>

                    Act or an exemption from such registration is available.
                    Geron has made no agreements, covenants or undertakings
                    whatsoever to register any of the Shares under the Act,
                    except as provided in Section 4 above. Geron has made no
                    representations, warranties or covenants whatsoever as to
                    whether any exemption from the Act, including, without
                    limitation, any exemption for limited sales in routine
                    brokers' transactions pursuant to Rule 144 under the Act,
                    will become available and any such exemption pursuant to
                    Rule 144, if available at all, will not be available unless:
                    (i) a public trading market then exists in Geron's common
                    stock, (ii) Geron has complied with the information
                    requirements of Rule 144, and (iii) all other terms and
                    conditions of Rule 144 have been satisfied.

               7.5.2 Transfer of the Shares has not been registered or qualified
                    under any applicable state law regulating securities and,
                    therefore, the Shares cannot and will not be sold unless
                    they are subsequently registered or qualified under any such
                    act or an exemption therefrom is available. Geron has made
                    no agreements, covenants or undertakings whatsoever to
                    register or qualify any of the Shares under any such act.
                    Geron has made no representations, warranties or covenants
                    whatsoever as to whether any exemption from any such act
                    will become available.

               7.5.3 CBSW hereby certifies that it is an "Accredited Investor"
                    as that term is defined in Rule 501 under the Act.

          7.6  Authorization. CBSW has full right, power, authority and capacity
               to enter into this Agreement and to consummate the transactions
               contemplated hereby and thereby and has taken all necessary
               action to authorize the execution, delivery and performance of
               this Agreement. Upon execution and delivery, this Agreement will
               constitute a valid and binding obligation of CBSW enforceable
               against CBSW in accordance with its terms, except as such
               enforceability may be limited by applicable bankruptcy,
               insolvency, reorganization, moratorium, fraudulent transfer,
               liquidation or similar laws relating to, or affecting generally,
               the enforcement of creditor's rights and remedies or by other
               equitable principles of general application from time to time in
               effect.

     8.   TAX ADVICE. CBSW acknowledges that CBSW has not relied and will not
          rely upon Geron or Geron's counsel with respect to any tax
          consequences related to the ownership, purchase, or disposition of the
          shares. CBSW assumes full responsibility for all such consequences and
          for the preparation and filing of all tax returns and elections which
          may or must be filed in connection with the shares.

     9.   NOTICES. Any notice or other communication required or permitted
          hereunder shall be in writing and shall be deemed to have been duly
          given on the date of delivery if delivered personally or by facsimile,
          or one day, not including Saturdays, Sundays, or national holidays,
          after sending if sent by national overnight delivery service, or five
          days, not including Saturdays, Sundays, or national holidays, after
          mailing if mailed by first class united states mail, certified or
          registered with return receipt requested, postage prepaid, and
          addressed as follows:

          To Geron at:       Geron Corporation
                             230 Constitution Drive
                             Menlo Park, California  94025
                             Attention: Chief Financial Officer
                             Telephone:       (650) 473-7700
                             Facsimile:       (650) 473-7750

          With a copy to:    Geron Corporation
                             230 Constitution Drive

                                       7

<PAGE>

                             Menlo Park, California  94025
                             Attention: Senior Director, Legal
                             Telephone:       (650) 473-7775
                             Facsimile:       (650) 566-7181

          To CBSW at:        Cambrex Bio Science Walkersville
                             8830 Biggs Ford Road
                             Walkersville, Maryland 21793
                             Attention:  VP of Business Development
                             Telephone:       (301) 898-7025
                             Facsimile:       (301) 845-6099

          With a copy to:    Cambrex Corporation
                             One Meadowlands Plaza
                             East Rutherford, NJ 07073
                             Attention:  General Counsel
                             Telephone:       (201) 804-3000
                             Facsimile:       (201) 804-9852

     10.  BINDING EFFECT. This agreement shall be binding upon the heirs, legal
          representatives and successors of Geron and of CBSW.

     11.  GOVERNING LAW. This agreement shall be governed by and construed in
          accordance with the laws of the state of Delaware, without giving
          effect to its conflicts of laws provisions.

     12.  INVALID PROVISIONS. In the event that any provision of this agreement
          is found to be invalid or otherwise unenforceable by a court or other
          tribunal of competent jurisdiction, such invalidity or
          unenforceability shall not be construed as rendering any other
          provision contained herein invalid or unenforceable, and all such
          other provisions shall be given full force and effect to the same
          extent as though the invalid and unenforceable provision was not
          contained herein.

     13.  COUNTERPARTS. This agreement may be executed in any number of
          identical counterparts, each of which shall be deemed an original, but
          all of which together shall constitute one and the same instrument.

     14.  AMENDMENTS. This agreement or any provision hereof may be changed,
          waived, or terminated only by a statement in writing signed by the
          party against whom such change, waiver or termination is sought to be
          enforced.

     15.  FUTURE COOPERATION. Each of the parties hereto agrees to cooperate at
          all times from and after the date hereof with respect to all of the
          matters described herein, and to execute such further assignments,
          releases, assumptions, amendments of the agreement, notifications and
          other documents as may be reasonably requested for the purpose of
          giving effect to, or evidencing or giving notice of, the transactions
          contemplated by this agreement.

     16.  ENTIRE AGREEMENT. This agreement, and the MSA, and Project Order No. 1
          thereto, constitute the entire agreement of the parties pertaining to
          the shares and supersede all prior and contemporaneous agreements,
          representations, and understandings of the parties with respect
          thereto.

                                       8

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the Effective Date.

                                Geron Corporation

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

                                Cambrex Bio Science Walkersville, Inc.

                                /s/ Shawn P. Cavanagh
                                --------------------------------------------
                                By: Shawn P. Cavanagh
                                Title: Senior Vice President

                                       9Exhibit 10.4

    

      Exhibit
        10.4

       

      AUDIT
        COMMITTEE CHARTER 

       

      POPE
        MGP,
        Inc. 

       

      As
        revised April 2005

       

      I.
        PURPOSE

       

      The
        primary function
        of the
        Audit Committee (“Committee”) is to assist the Board of Directors of Pope MGP,
        Inc. in fulfilling its oversight responsibilities for Pope Resources and
        its
        subsidiaries (the “Partnership”) with respect to the following: 

       

      
        	 	
                ·

              	
                Accounting
                  and financial reporting, 

              
	 	
                ·

              	
                Assessment
                  and management of risk and the related internal control environment,
                  

              
	 	
                ·

              	
                Compliance
                  with laws and regulations, and 

              
	 	
                ·

              	
                Internal
                  and external audit processes. 

              

      

      

      In
        fulfilling its responsibilities,
        the
        Committee will: 

       

      
        	 	
                ·

              	
                Serve
                  as an independent and objective party to monitor the Partnership's
                  financial reporting process and internal control system,
                  

              
	 	
                ·

              	
                Have
                  sole authority for appointment, retention, and firing of independent
                  accountants, 

              
	 	
                ·

              	
                Approve
                  all audit and non-audit services provided to the Partnership by
                  the
                  independent accountants, 

              
	 	
                ·

              	
                Review
                  and evaluate the audit efforts of the independent accountants and
                  the
                  Partnership’s internal audit activities, 

              
	 	
                ·

              	
                Facilitate
                  an open avenue of communication among the independent accountants,
                  internal audit, and the Board of Directors, 

              
	 	
                ·

              	
                Establish
                  procedures for receiving and treating concerns (including anonymous
                  ones
                  from employees of the Partnership and it subsidiaries and affiliated
                  companies) regarding accounting, internal accounting controls and
                  auditing
                  and ensure that such concerns are treated confidentially with no
                  threat of
                  retaliation to the party surfacing the concern.

              

      

      

      The
        Committee will have the complete and unrestricted authority
        and
        funding to conduct investigations into any matters within the Committee’s scope
        of responsibilities. The Committee shall be empowered to retain independent
        counsel and other professionals to assist in the conduct of any investigation.
        

       

      The
        Committee will primarily fulfill these responsibilities by carrying out the
        activities enumerated in Section III of this Charter. 

       

      
        
           

        

        
           

          
            

          

        

        
           

        

      

      Audit
        Committee Charter

      Pope
        MGP, Inc.

      Revised
        April 2005

       

      II.
        COMPOSITION, MEETINGS AND ADMINISTRATIVE MATTERS

       

      Number
        of Directors:
        The
        Committee shall be comprised of three or more directors as determined by
        the
        Board. 

       

      Independence
        of Directors:
        Each
        member of the Committee shall be an independent director. A director shall
        be
        considered “independent” if he or she is free from any relationship that may
        interfere with the exercise of his or her independence from management and
        the
        Partnership or independent judgment as a member of the Committee and otherwise
        meets SEC and Nasdaq requirements for service. The determination of whether
        a
        director is independent for this purpose shall rest with the Board of Directors,
        and the determination of the Board in compliance with the requirements set
        forth
        in SEC and Nasdaq regulations shall be conclusive 

       

      Committee
        Member Qualifications:
        All
        members of the Committee shall have a working familiarity with basic finance
        and
        accounting practices and be able to read and understand financial statements
        at
        the time of their appointment. 

       

      Designation
        of “Financial Expert”:
        The
        Committee will designate at least one of its members in the Partnership’s annual
        Form 10-K as a “financial expert” so defined under SEC rules. 

       

      Appointment
        of Committee Members:
        The
        Members of the Committee shall be elected by the Board at the annual meeting
        of
        the Board and shall serve until their resignation, removal, or replacement.
        A
        Chair shall be elected by the full Board. 

       

      Meeting
        Frequency:
        The
        Committee shall meet at least four times annually in regularly scheduled
        meetings. The Committee shall also meet at other times as necessary to discharge
        its responsibilities and as circumstances dictate. Meetings of the Committee
        may
        be in person or telephonically. 

       

      Meeting
        Attendees:
        In
        addition to Committee Members, the Committee may ask that members of Partnership
        management, the Partnership’s independent accountants, other members of the
        Board, and/or others be present at Committee meetings as appropriate to the
        subject matter under consideration. [Note: At present the Partnership does
        not
        have a formally established internal audit function. On occasion, financial
        management personnel perform reviews or procedures that emulate this function.
        As such, the Committee may ask that personnel performing such internal audit
        functions be present at Committee meetings. “Internal audit” as used herein is
        understood to cover that function in broad terms, whether formally or informally
        established.] 

       

      Private
        Communications:
        Regularly at Committee meetings, there will be an opportunity for Committee
        members to have private communications with each of management, the financial
        officers, internal audit, and the independent accountants. As part of its
        job to
        foster open communication, the Committee shall meet regularly, and at least
        annually, with the independent accountants in separate executive session
        to
        discuss any matters that the Committee or the Independent accountants believe
        should be discussed privately. 

      

      
        
          2
            of 6

        

        
           

          
            

          

        

        
           

        

      

      
        Audit
          Committee Charter

        Pope
          MGP, Inc.

        Revised
          April 2005

      

       

      Minutes:
        The
        Committee Chair shall appoint an individual to prepare minutes for each meeting.
        Draft minutes shall be distributed to Committee members, for approval at
        the
        next meeting. Approved minutes shall be distributed to the Board of Directors
        and such minutes shall be retained with the permanent corporate records of
        the
        Partnership. 

       

      Reporting
        to the Board:
        The
        Chair or his or her designee will report Committee actions to the Board of
        Directors with such recommendations as the Committee may deem appropriate.
        

       

      Committee
        Charter:
        Annually, the Committee shall review its Charter and, if appropriate, adopt
        revisions.

      

      III.
        DUTIES AND RESPONSIBILITIES 

       

      To
        fulfill its duties and responsibilities the Committee shall: 

       

      Maintain
        its Independence

       

      
        	
                1.

              	
                Adhere
                  strictly to limitations on member compensation stipulated by SEC
                  or Nasdaq
                  rules. 

              
	
                2.

              	
                Monitor
                  rules defining “affiliated persons” and prohibited relationships so as to
                  avoid independence issues. 

              

      

      

      Review
        of Documents and Reports 

       

      
        	
                3.

              	
                Review
                  with management the Partnership’s annual financial statements and the
                  independent accountants’ opinion with respect to such financial
                  statements. 

              
	
                4.

              	
                Review
                  with the independent accountants the results of their audit of
                  the annual
                  financial statements, including all matters required to be communicated
                  to
                  audit committees under generally accepted auditing standards. Such
                  communications should include significant audit adjustments, significant
                  accounting policies and any related changes thereto, management
                  judgments
                  and accounting estimates, disagreements with management, and any
                  other
                  difficulties encountered during their audit. 

              
	
                5.

              	
                Review
                  the Form 10-Q prior to its filing. This review may take place at
                  a
                  scheduled meeting or it may take place as a result of dissemination
                  of a
                  draft 10-Q followed by individual responses to either management
                  or the
                  Committee Chair. 

              
	
                6.

              	
                Review
                  comments provided by the independent accountants relating to the
                  Partnership’s internal controls or other related matters, and review and
                  monitor management’s response and follow-up actions. 

              
	
                7.

              	
                Review
                  any internal reports (if applicable) to management prepared by
                  internal
                  auditors and management's response.

              

      

      

      
        
          3
            of 6

        

        
           

          
            

          

        

        
           

        

      

      
        Audit
          Committee Charter

        Pope
          MGP, Inc.

        Revised
          April 2005

      

       

      Independent
        Accountants 

       

      
        	
                8.

              	
                Assume
                  direct responsibility for appointment, compensation, and oversight
                  of the
                  independent accountant. The independent auditor reports directly
                  to the
                  Committee.

              
	
                9.

              	
                Review
                  the independent accountants’ plan and scope relating to their audit of the
                  annual financial statements. Review with the independent accountants
                  the
                  coordination of audit effort to assure completeness of coverage,
                  reduction
                  of redundant efforts, and the effective use of audit resources.
                  

              
	
                10.

              	
                On
                  an annual basis, review and discuss with the accountants all significant
                  relationships the accountants have with the Partnership to determine
                  and
                  confirm the accountants' independence. Obtain a formal written
                  statement
                  from the outside auditors delineating all relationships with the
                  Partnership. Ensure that the CEO, CFO, Controller (or persons in
                  equivalent positions) have not been employed by the company’s audit firm
                  during the 1year period preceding the current year
                  audit.

              
	
                11.

              	
                Ensure
                  that the independent accountants will not provide any non-audit
                  services
                  including: a) bookkeeping or other services related to the accounting
                  records or financial statements of the audit client; b) financial
                  information systems design and implementation; c) appraisal or
                  valuation
                  services, fairness opinions, or contribution-in-kind reports; d)
                  actuarial
                  services; e) internal audit outsourcing services; f) management
                  functions
                  or human resources; g) broker or dealer, investment adviser, or
                  investment
                  banking services; h) legal services and expert services unrelated
                  to the
                  audit; i) any other service that the Committee determines is
                  impermissible. The independent auditor may engage in any non-audit
                  service, including tax services that is not listed above, only
                  if the
                  activity is pre-approved by the Audit Committee. 

              
	
                12.

              	
                Ensure
                  that the lead audit or coordinating partner and the reviewing partner
                  must
                  rotate off of the audit every 5 years.

              

      

      

      Financial
        Reporting Processes and Internal Controls

       

      
        	
                13.

                 

              	
                Review
                  with financial management the Partnership’s significant accounting and
                  reporting policies and any changes thereto. 

                 

              
	
                14.

              	
                Review
                  with financial management the accounting treatment of individual
                  events or
                  transactions that may have a significant impact on financial reporting.
                  

              
	
                15.

              	
                Consider,
                  through periodic discussions, the independent accountants' judgments
                  about
                  the quality and appropriateness of the Partnership's accounting
                  principles
                  as applied in its financial reporting. 

              
	
                16.

              	
                Determine
                  that management has implemented policies and procedures ensuring
                  that the
                  Partnership’s risks are identified and that controls are adequate, in
                  place, and functioning properly. 

              
	
                17.

              	
                Consider
                  and review with management and the independent accountants:
                  

              

      

       

      
        
          4
            of 6

        

        
           

          
            

          

        

        
           

        

      

      
        	
                
                  Audit
                    Committee Charter

                  Pope
                    MGP, Inc.

                  Revised
                    April 2005

                

                 

                The
                  adequacy of the Partnership’s internal controls including computerized
                  information system controls and security. Any related significant
                  findings
                  and recommendations of the independent accountants regarding internal
                  controls together with management’s responses thereto.
                  

              

      

      

      
        	
                18.

              	
                Evaluate
                  whether management is setting the appropriate tone at the top by
                  communicating the importance of internal controls and ensuring
                  all
                  individuals possess an understanding of their roles and responsibilities.
                  

              
	 	 
	
                19.

              	
                Require
                  the independent accountants to keep the Committee timely informed
                  about
                  fraud, illegal acts, and deficiencies in internal control.
                  

              

      

      

      Ethical
        and Legal Compliance 

       

      
        	
                20.

              	
                Confirm
                  that management has an appropriate review system in place to ensure
                  that
                  the Partnership's financial statements, reports and other financial
                  information (disseminated to governmental organizations and the
                  public)
                  satisfy legal requirements. 

              
	
                21.

              	
                Evaluate
                  the need for and related activities (if applicable) of the Partnership’s
                  internal audit activities. If applicable, review such activities,
                  organizational structure, and qualifications of internal audit
                  resources.
                  

              
	
                22.

              	
                Review,
                  with management and Partnership counsel, the Partnership’s policies and
                  procedures to minimize and monitor risks and exposures from noncompliance
                  with laws and regulations. Specifically consider compliance matters
                  pertaining to corporate securities trading policies. 

              
	
                23.

              	
                Review
                  and approve any extension of credit by the Partnership to a director
                  or
                  officer of the Partnership or its general partners. 

              
	
                24.

              	
                Approve
                  a code of ethics for senior financial officers and review it annually
                  for
                  potential improvement. Obtain annually an assurance in writing
                  from each
                  senior financial officer that they have complied. 

              
	
                25.

              	
                Establish
                  and maintain procedures to receive, retain, and treat complaints
                  from
                  employees and others about accounting, internal accounting controls,
                  or
                  auditing matters. The procedures established must address “whistleblower
                  complaints” by establishing for the confidential, anonymous submission by
                  employees of concerns regarding questionable accounting or auditing
                  matters. Remind employees annually of the availability of the procedures
                  and how to utilize them. 

              
	
                26.

              	
                Review,
                  with management and Partnership counsel, the process for determining
                  risks
                  and exposures from litigation, claims and assessments, including
                  counsel’s
                  assessment of specific significant matters. 

              
	
                27.

              	
                Perform
                  any other activities consistent with this Charter, the Partnership
                  Agreement and governing law, as the Committee or the Board deems
                  necessary
                  or appropriate. 

              

      

      

      
        
           

        

        
          5
            of
            6

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00099-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00099-of-00352.parquet"}]]