Confidential







                                 GPC Biotech AG
                               Martinsried/Planegg


                     Convertible Bonds Terms and Conditions
      for members of the management bodies of GPC Biotech AG and affiliated
                   subsidiary companies in Germany and abroad




               (Resolution of the General Meeting of May 24, 2006)





                                    Preamble


The General Meeting of GPC Biotech AG (hereinafter "the Company" or "GPC
Biotech") resolved on May 24, 2006 to implement a program for the issuance of
convertible bonds, nominal value (euro) 1,00 per convertible bond (the
"Convertible Bonds") to members of the management bodies of GPC Biotech AG and
affiliated subsidiary companies in Germany and abroad (hereinafter the
"Allottees").

The terms and conditions of the program for the issuance of Convertible Bonds
are as follows:



                                      ss. 1
                                Convertible Bonds


(1)      The Allottees receive registered Convertible Bonds which comprise
         the right to purchase ordinary no-par value bearer shares (the
         "Shares") of the Company in the number listed in the offer letter or in
         the convertible bond certificate, subject to adjustment pursuant to ss.
         9 hereof.

(2)      By accepting the offer to purchase the Convertible Bonds, the Allottee
         shall transfer the total nominal amount of the Convertible Bonds to
         which he/she is entitled in Euros for unconditional disposition by the
         Company and without further costs to an account to be specified by the
         Company. The transfer has been made no later than one month after the
         grant date.




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(3)      The Convertible Bonds may be evidenced in several registered global
         convertible bond certificates. The right to (individual) convertible
         bond certificates is excluded.

(4)      On behalf of the Company, a bonds register entitled "Convertible
         Bonds" (hereinafter the "Options Register"), in which the Convertible
         Bonds are registered together with the conversion price (see ss. 8 (1)
         hereof), the series and number as well as the holder by name, date of
         birth and residence address will be maintained by the exercise agent
         (see ss. 18 hereof). In addition, the Options Register sets forth in
         particular the information necessary for determining the period
         according to ss. 14 (1) hereof (the "Vesting Period").

(5)      In relation to the Company, only parties registered as Allottees in the
         Options Register are qualified as such.



                                      ss. 2
                     Basic Features of the Convertible Bonds


(1)      As provided by these terms and conditions, and subject to any
         adjustment pursuant to ss.ss. 8 and 9 hereof, the Convertible Bonds may
         be converted to obtain one Share of the Company for each Convertible
         Bond upon payment of the conversion price to be specified by the
         Company in accordance with ss. 8 hereof.

(2)      To cover the Convertible Bonds to be issued to the Allottees, the May
         24, 2006 General Meeting of the Company created a conditional capital
         in the amount of up to (euro) 900,000. A maximum of 650,000 Convertible
         Bonds may be issued to members of the management bodies of GPC Biotech
         AG and affiliated subsidiary companies in Germany and abroad.
         Supervisory Board of the Company may choose whether the Shares
         underlying the Convertible Bonds will be made available from such
         conditional capital or from a program to repurchase its own Shares,
         resolved or possibly yet to be resolved by the General Meeting.



                                      ss. 3
                 Interest Rate, Repayment of the Nominal Amount


(1)      The Convertible Bonds bear interest at 3.5% per annum starting from the
         date of their issuance. The interest amounts are due at the end of the
         respective calendar year. In the event of the cancellation of the
         Convertible Bonds pursuant to ss. 14 hereof or of the due conversion of
         the Convertible Bonds pursuant to ss. 10 hereof, the interest amounts
         for the current calendar year are due immediately.

(2)      A right to compound interest does not exist.

(3)      The paid-in nominal amount is due for repayment  within ten calendar
         days after lapse of the Convertible Bonds for whatever reason.




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                                      ss. 4
                      Purchasing Periods, Time to Maturity


(1)      The Convertible Bonds may be offered to the Allottees for subscription
         within the last fifteen working days of each calendar month. The date
         of issuance is the day on which the Supervisory Board has made an offer
         to the Allottee for subscription of the Convertible Bonds, provided,
         such offer has been accepted within the subscription period.

(2)      The time to maturity of the Convertible Bonds is ten years from the
         date of their issuance. ss. 3(3) notwithstanding, the Convertible Bonds
         lapse without compensation upon expiration of the time to maturity.



                                      ss. 5
                                 Waiting Period


The Allottees may convert the Convertible Bonds at the earliest after the second
anniversary date of their issuance pursuant to ss. 4 (1) hereof. In addition,
the Convertible Bonds may only be converted if, after expiration of the two-year
waiting period, the cancellation periods set forth in ss. 14 (1) hereof, as
specified by the Company in the (global) convertible bond certificates, have
expired.



                                      ss. 6
                                Exercise Periods


(1)      Convertible Bonds may not be converted from the date on which the
         Company submits an offer to its shareholders for the subscription of
         new shares or convertible bonds with conversion or option rights by
         written notice to all shareholders or through an announcement in the
         publications named in the Company's Articles of Association or in a
         mandatory stock exchange publication of the Frankfurt Stock Exchange
         until the end of the last day of the subscription period.

(2)      Notwithstanding ss. 6 (1) hereof, the Convertible Bonds may only be
         converted during a period of the six weeks starting on the second day
         after the publication of the quarterly reports or of the annual
         financial statement, respectively. The Convertible Bonds may not be
         converted from December 24 to December 31 of each calendar year.

(3)      The  Supervisory Board has the right to impose further restrictions on
         the exercise periods.





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                                      ss. 7
                                Performance Goals


Notwithstanding ss.ss. 4 and 5 hereof, the Convertible Bonds may only be
converted if the Closing Price (as defined below) develops better than a
reference index. The reference index shall be the stock index TecDax of the
Frankfurt Stock Exchange (the "Price Index"). The Price Index and the Closing
Price on the date on which the Convertible Bonds are issued shall serve as the
starting point for the performance measurement. The Convertible Bonds may only
be converted if the Closing Price has developed better than the Price Index. The
relevant comparison date for this shall be the date four weeks prior to the
conversion.



                                      ss. 8
                                Conversion Price


(1)      As provided by these terms and conditions, each conversion privilege
         represents the right to subscribe for one Share.

(2)      The conversion price to be paid upon exercise of the conversion
         privilege for the subscription of one individual Share corresponds to
         the average closing price of the Shares in the XETRA closing auction on
         the Frankfurt Stock Exchange (the "Closing Price") during the last five
         exchange trading days prior to the issuance of the Convertible Bonds
         less (euro) 1.00; provided, however, that the conversion price shall at
         least be equal to the proportionate amount of the share capital
         allocable to one Share.



                                      ss. 9
                       Adjustment of the Convertible Bonds


(1)      In the event of a merger of the Company with and into another entity
         where the Company is not the surviving entity (Verschmelzung durch
         Aufnahme), a change in the legal form of the Company (Umwandlung), a
         change in the notional nominal value of the shares of stock in the
         Company and similar measures leading to the cancellation or conversion
         of the shares of stock underlying the Convertible Bonds, each
         Convertible Bond shall be substituted by the right to purchase at the
         exercise price a specific number of shares of stock or other interests
         in the Company or its successor entity (calculated on the basis of the
         Fair Market Value at the time of any such change) substituting the
         shares of stock in the Company. The remaining provisions of these Terms
         and Conditions shall remain unaffected.

(2)      In the event of a capital decrease by means of amalgamating the
         ordinary shares in the Company (Kapitalherabsetzung durch
         Zusammenlegung, ss. 222(4) AktG) or by means of cancellation
         (Einziehung) of ordinary shares (ss. 237 AktG), the subscription ratio
         (as specified in the applicable Convertible Bond Grant) shall be




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         adjusted by multiplying it with the coefficient resulting from the
         division of the number of shares of stock after such capital decrease
         by the number of shares of stock prior to such capital decrease.
         Fractional shares of stock resulting from any such capital decrease
         will not be delivered upon conversion of the Convertible Bonds.

(3)      In case of a capital increase out of retained earnings by the Company,
         any existing conditional capital will be increased according to Section
         218 AktG in the same ratio as the Company's share capital, instead of a
         deduction of the exercise price. The right of an Allottee to purchase
         stock of the Company, at the point in time of conversion, will increase
         in the same ratio as the Company's share capital increase.


                                     ss. 10
               Conversion Procedure; Issuance of Underlying Shares


(1)      To convert the Convertible Bonds, the Allottee must

         a)       using the form available from the exercise agent or from a
                  trustee (see ss. 18 hereof), if such is appointed for the
                  purpose, deliver a written subscription declaration in
                  duplicate to the exercise agent or to the trustee; and

         b)       pay the conversion price in EURO, completely and free of costs
                  and charges to the Company, to the Company's account indicated
                  in the subscription declaration form.

(2)      Declarations received by the exercise agent within the periods set
         forth in ss.ss. 5 and 6 hereof are deemed to be delivered and received
         on the next subsequent banking business day on which the conversion of
         the convertible bond is again permissible. The Allottee may revoke
         his/her subscription declaration only so long as receipt has not yet
         effectively taken place.

(3)      The Shares resulting from the conversion of the Convertible Bonds are
         printed and delivered in the form provided by the Articles of
         Association of the Company in their respective valid version. Issuance
         will be initiated - to the extent possible and subject to receipt by
         the Company of payment in full of the conversion price - within ten
         banking business days after the subscription declaration becomes
         effective. The initiation of the delivery requires the assignment of a
         bank by the Company. The Company is not liable for any delay of the
         share delivering unless caused by default.

(4)      In the event that the Allottee intends to sell the Shares acquired
         through the conversion of his/her Convertible Bonds immediately after
         such acquisition, the Company may, with a view to a smooth placement in
         the market, tender, in a manner that safeguards the interests of the
         Allottees, the Shares created from a




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         large number of conversions in the form of a block sale to (for
         example) institutional investors. The Allottee shall, at the request of
         the Company, assist appropriately and reasonably in the smooth
         placement on the market.

(5)      Any issuance of Shares resulting from the conversion of Convertible
         Bonds is only permitted in conformity with the terms and conditions
         hereof and in no case prior to payment in full of the conversion price
         according to ss. 8 hereof (see ss. 199(1) AktG).



                                     ss. 11
                     Dividend Entitlement of the New Shares


The Shares created through the conversion of Convertible Bonds - provided they
are created through conversion before the beginning of the General Meeting of
the Company that resolves on the allocation of balance sheet profits - are
entitled to dividends from the beginning of the previous fiscal year, or, to the
extent created through conversion after the beginning of General Meeting of the
Company, the respective fiscal year in which they were created through such
conversion.



                                     ss. 12
                    Nonassignability of the Convertible Bonds


(1)      In principle, the Convertible Bonds may not be transferred.

(2)      Other methods of disposing of the Convertible Bonds, granting of
         subordinate equity interests or creation of a trust as well as
         establishment of short positions by granting to third parties the
         Convertible Bonds granted to the Allottee as well as comparable
         offsetting transactions that are economically equivalent to a sale of
         the Convertible Bonds are also prohibited.

(3)      Any violation of paragraphs (1) and/or (2) of this ss. 12 results in
         forfeiture of the Convertible Bonds. To the extent that the Company or
         the Allottees have substantive reasons, the Supervisory Board may
         consent to dispositions of the Convertible Bonds in the form described
         in paragraphs (1) and (2) of this ss. 12.

(4)      Notwithstanding paragraphs (1) and (2) of this ss. 12, the Allottee is
         authorized, after expiration of the two-year waiting period or after
         expiration of the cancellation period specified in the convertible bond
         certificates, to sell his/her Convertible Bonds to a credit institution
         to be specified by the Company.



                                     ss. 13
                                   Succession


(1)      The Convertible Bonds - provided they have not been cancelled pursuant
         to ss. 14




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         hereof - may be transferred by will or the laws of descent and
         distribution. The heirs shall be bound by these terms and conditions.

(2)      The heirs shall report their standing as heirs to the Company and must
         prove their legitimacy in conformity with ss. 35 GBO.



                                     ss. 14
              Vesting Period; Cancellation of the Convertible Bonds


(1)      The Convertible Bonds may in principle be cancelled for a maximum
         period of up to four (4) years (the "Vesting Period"). Expiration of
         the Vesting Period in relation to the Convertible Bonds granted in
         total to the Allottee does not take place uniformly, but is divided
         into stages over the Vesting Period. One quarter of the Convertible
         Bonds becomes uncancellable each year, calculated from the beginning of
         the vesting period. The Vesting Period begins to run with the issuance
         of the convertible bonds. A different Vesting Period may be specified
         by the Supervisory Board for each individual case on the basis of
         internal guidelines of the Company that may be formulated thereby for
         common application and notified to the Allottee in the offer letter.
         Above and beyond this, the expiration of the Vesting Period - if
         certificates evidencing the Convertible Bonds are issued - is noted in
         the respective certificates.

(2)      The Company or second-tier enterprises currently affiliated with it or
         in the future may immediately cancel the Convertible Bonds that are
         still subject to the Vesting Period without compensation if the
         Allottee's employment or consultancy agreement has been terminated
         prior to expiration of the Vesting Period specified for the Convertible
         Bonds. The cancellation of Convertible Bonds becomes effective upon
         receipt of a separate written cancellation declaration by the Allottee,
         but not earlier than:

         a)       in the case of an ordinary termination by the Allottee, upon
                  receipt of his/her termination notice;

         b)       in the case of an ordinary termination of the Allottee by the
                  Company, upon effectiveness of such termination (termination
                  of employment or consultancy) or - in the case of the
                  exoneration of the Allottee - on the date of such exoneration;

         c)       in the case of termination by the Allottee for cause, on the
                  date on which the ordinary termination - defined as the
                  termination notice by the Company or by a second-tier
                  enterprise currently affiliated with it or in the future on
                  the date of the termination notice by the Allottee - would
                  have become effective;

         d)       in all other cases, on the date of actual termination of
                  employment or consultancy (for example, termination by
                  rescission contract, death,




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                  retirement, educational leave of absence and similar reasons).

(3)      The Company or an affiliated  subsidiary company (affiliated now or in
         the future) may cancel the Convertible Bonds no longer subject to a
         Vesting Period without compensation if

         a)       the Allottee has not converted his/her  Convertible Bonds
                  within 12 calendar months after the cancellation according to
                  paragraph (2) above becomes effective, or

         b)       the Allottee has not converted  his/her  Convertible Bonds
                  within 12 months after the affiliated subsidiary company
                  employing the Allottee has left the group (i.e. GPC Biotech
                  holds an equity interest of less than 50% in the equity or
                  share capital of such affiliate),

         provided such conversion would have been possible taking into
         consideration the waiting period set forth in ss. 5 hereof and the
         exercise periods set forth in ss. 6 hereof. If a conversion of the
         Convertible Bonds according to ss.ss. 5 and 6 hereof is not possible on
         the effective date of the termination, the period begins when the
         conditions for conversion in ss.ss. 5 and 6 hereof are met for the
         first time.

(4)      The [Supervisory Board] may, in isolated cases, choose not to cancel
         all or part of the Convertible Bonds if such cancellation seems
         inequitable in such isolated cases (suspension of employment because of
         a maternity or paternity leave of absence, general disability,
         retirement and similar reasons). The same shall apply mutatis mutandis
         if the Convertible Bonds are intended to substitute for a severance
         payment that may be due upon termination of employment or officer
         status. In individual cases, the choice not to cancel the Convertible
         Bonds may be made contingent upon the extension of the Vesting Period
         by the duration of the suspension of employment (for example, due to a
         maternal or paternal leave of absence or an unpaid leave of absence).

(5)      In the event that the employment and/or the officer status of an
         Allottee with the Company or with an affiliated subsidiary company
         (affiliated now or in the future) is - irrespective of the reason -
         terminated, but at the same time a new employment or officer status is
         established with the Company or with a second-tier enterprise currently
         affiliated with it or in the future, the aforementioned cancellation
         rights shall not apply on the occasion of such termination but only
         relative to any termination of the new employment or new officer
         status.

(6)      The Company has the right to cancel the Convertible  Bonds with
         immediate effect if and as soon as insolvency proceedings are
         instituted against the assets of the Allottee, institution of
         insolvency proceedings is declined for insufficiency of assets or
         Convertible Bonds are attached by a creditor and the enforcement
         measure is not rescinded within six (6) months (with expiration of the
         6-month period).

(7)      For his/her part, the Allottee may cancel the conversion privilege with




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         three-months written notice as of the end of a quarter without having
         to give any reasons.

(8)      The Company may request the return of any issued and cancelled
         convertible bond certificates from the Allottee or from any other
         possessor.



                                     ss. 15
                                      Taxes


The Allottee himself/herself shall pay all taxes that may be incurred in
connection with the issuance or conversion of Convertible Bonds, including
church taxes and solidarity surcharge. However, the Company shall deduct such
taxes and charges from the Allottee's salary to the extent legally prescribed
and pay them over, if appropriate in the form of wage-tax withholding, to the
tax office having jurisdiction over its permanent establishment. Above and
beyond this, the Company may, if necessary, make the issuance of Shares
contingent upon proof of appropriate tax payments by the Allottee or upon
lodging of reasonable surety. If the Allottee does not or cannot meet his/her
obligations stipulated by this ss. 15 hereof, the Company has to so report to
the tax office having jurisdiction over its permanent establishment.



                                     ss. 16
                                  Insider Rules


(1)      The Company hereby advises each Allottee that such Allottee may be
         subject to insider regulations and under certain circumstances may be
         punishable for disregard of these regulations. In particular, insiders
         are prohibited from selling any Shares acquired through the conversion
         of Convertible Bonds by exploiting their knowledge of insider facts
         (ss. 14(1) WpHG) and equivalent provisions under US law and
         regulations.

(2)      The Allottee hereby undertakes to acknowledge and honor any current or
         future internal guidelines published by the Company with respect to the
         prevention of insider trading violations. Any violation of such
         guidelines is a breach of the accessory obligations defined by labor
         law and may give rise to, possibly immediate, termination of the
         Allottee's employment.



                                     ss. 17
                         Reservation of Voluntary Nature


Any issuance of Convertible Bonds is voluntary in nature and an Allottee who has
been issued Convertible Bonds does not, by reason of such issuance, accrue any
right to receive additional Convertible Bonds at any point in the future.





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                                     ss. 18
                                 Exercise Agent


The exercise agent is the Supervisory Board of the Company. The Supervisory
Board empowers the Legal Department to accept subscription declarations and to
handle the exercise procedure. In addition, the Company has the right to appoint
a trustee (such as a bank), which in this respect assumes the tasks of the
Supervisory Board and functions as the exercise agent.



                                     ss. 19
                                  Announcements


Declarations, notices, amendments or adjustments in regard to the Convertible
Bonds are announced to the Allottee in writing. Written announcements of legally
binding nature (such as cancellation declaration and similar information) are
effected by personal delivery with acknowledgment of receipt or by registered
letter or messenger to the address last reported by the Allottee to the Company
or to the second-tier enterprise affiliated with it.



                                     ss. 20
                            Miscellaneous Provisions


(1)      Should any of these terms and conditions be or become invalid or
         unenforceable, in part or in whole, such provision shall be replaced by
         such valid and enforceable provision that, in a legally permissible
         manner, matches as closely as possible the invalid or unenforceable
         provision, attaining the same or a similar economic effect. The
         invalidity or unenforceability of any provision hereof shall not affect
         the validity or enforceability of any other provision hereof, which
         shall remain in full force and effect. The same shall apply mutatis
         mutandis if a loophole requiring amplification is discovered during
         execution of these terms and conditions.

(2)      Amendments and additions to these conditions shall be in writing,
         unless recording by a notary is required. The foregoing sentence
         applies mutatis mutandis to any amendments of this ss. 20(2).

(3)      The place of performance and place of jurisdiction is the registered
         seat of the Company.



(4)      The form and content of the  Convertible  Bonds as well as the rights
         and obligations of the Allottees and of the Company are construed in
         accordance with the laws of the Federal Republic of Germany.




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Martinsried/Planegg, _______________________



The Supervisory Board of

GPC Biotech AG



                                                 Duly noted:

                                                 ______________________________