ex10_2.htm


     

     

     


    EXHIBIT
10.2

    


    [FORM
OF WARRANT]

     

    XOMA
Ltd.

     

    Warrant
To Purchase Common Stock

     

    


    Warrant
No.:  W-[__]

    Number of
Common Shares:  [___________]

    Date of
Issuance:  June [__], 2009 ("Issuance Date")

    


     

    XOMA
Ltd., a Bermuda corporation, (the "Company"), hereby certifies
that, for good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, [_________________], the registered holder hereof, or
its permitted assigns (the "Holder"), is entitled, subject
to the terms set forth below, to purchase from the Company, at the Exercise
Price (as defined below) then in effect, upon surrender of this Warrant to
Purchase Common Stock (including any Warrants to Purchase Common Stock issued in
exchange, transfer or replacement hereof, the "Warrant"), at any time or
times on or after the six (6) month and one (1) day anniversary of the date
hereof, but not after 11:59 p.m., New York Time, on the Expiration Date (as
defined below), [_________] fully paid nonassessable shares of Common Stock (as
defined below), as adjusted pursuant to the terms hereof (the "Warrant
Shares").  Except as otherwise defined herein, capitalized
terms in this Warrant shall have the meanings set forth in Section
16.  This Warrant is one of the Warrants to purchase Common Stock (the
"SPA Warrants") issued
pursuant to Section 1 of that certain Securities Purchase Agreement, dated as of
June 5, 2009 (the "Subscription
Date"), by and among the Company and the investors (individually, a
"Buyer" and
collectively, the "Buyers") referred to therein
(the "Securities Purchase
Agreement").

     

    EXERCISE
OF WARRANT.

     

    Mechanics of
Exercise.  Subject to the terms and conditions hereof
(including, without limitation, the limitations set forth in Section 1(f)), this
Warrant may be exercised by the Holder on any day on or after the six (6) month
and one (1) day anniversary of the date hereof in whole or in part, by
(i) delivery of a written notice, in the form attached hereto as Exhibit A (the "Exercise Notice"), of the
Holder's election to exercise this Warrant and (ii) (A) payment to the
Company of an amount equal to the applicable Exercise Price multiplied by the
number of Warrant Shares as to which this Warrant is being exercised (the "Aggregate Exercise Price") in
cash or by wire transfer of immediately available funds or (B) by notifying the
Company that this Warrant is being exercised pursuant to a Cashless Exercise (as
defined in Section 1(d)).  The Holder shall not be required to deliver
the original Warrant in order to effect an exercise
hereunder.  Execution and delivery of the Exercise Notice with respect
to less than all of the Warrant Shares shall have the same effect as
cancellation of the original Warrant and issuance of a new Warrant evidencing
the right to purchase the remaining number of Warrant Shares.  On
or

     


    
      
         


      

      
         


        
          

        

      

      
         


      

    


    before
the first (1st) Business Day following the date on which the Company has
received each of the Exercise Notice and the Aggregate Exercise Price (or notice
of a Cashless Exercise) (the "Exercise Delivery Documents"),
the Company shall transmit by facsimile an acknowledgment of confirmation of
receipt of the Exercise Delivery Documents to the Holder and the Company's
transfer agent (the "Transfer
Agent").  On or before the third (3rd) Trading Day following
the date on which the Company has received all of the Exercise Delivery
Documents (the "Share Delivery
Date"), the Company shall (X) provided that the Transfer Agent is
participating in The Depository Trust Company ("DTC") Fast Automated
Securities Transfer Program, upon the request of the Holder, credit such
aggregate number of shares of Common Stock to which the Holder is entitled
pursuant to such exercise to the Holder's or its designee's balance account with
DTC through its Deposit Withdrawal Agent Commission system, or (Y) if the
Transfer Agent or the Company is not participating in the DTC Fast Automated
Securities Transfer Program, issue and dispatch by overnight courier to the
address as specified in the Exercise Notice, a certificate, registered in the
Company's share register in the name of the Holder or its designee, for the
number of shares of Common Stock to which the Holder is entitled pursuant to
such exercise.  Upon delivery of the Exercise Delivery Documents, the
Holder shall be deemed for all corporate purposes to have become the holder of
record of the Warrant Shares with respect to which this Warrant has been
exercised, irrespective of the date such Warrant Shares are credited to the
Holder's DTC account or the date of delivery of the certificates evidencing such
Warrant Shares, as the case may be.  If this Warrant is submitted in
connection with any exercise pursuant to this Section 1(a) and the number of
Warrant Shares represented by this Warrant submitted for exercise is greater
than the number of Warrant Shares being acquired upon an exercise, then the
Company shall as soon as practicable and in no event later than three (3)
Business Days after any exercise and at its own expense, issue a new Warrant (in
accordance with Section 7(d)) representing the right to purchase the number of
Warrant Shares issuable immediately prior to such exercise under this Warrant,
less the number of Warrant Shares with respect to which this Warrant is
exercised.  No fractional shares of Common Stock are to be issued upon
the exercise of this Warrant, but rather the number of shares of Common Stock to
be issued shall be rounded up to the nearest whole number.  The
Company shall pay any and all taxes which may be payable with respect to the
issuance and delivery of Warrant Shares upon exercise of this
Warrant.

     

    Exercise
Price.  For purposes of this Warrant, "Exercise Price" means $1.30,
subject to adjustment as provided herein.

     

    Company's Failure to Timely
Deliver Securities.  In addition to any other rights available
to the Holder, if the Company fails to cause the Transfer Agent to transmit to
the Holder a certificate or the certificates representing the Warrant Shares
pursuant to an exercise on or before the Warrant Share Delivery Date, and if
after such date the Holder purchases (in an open market transaction or
otherwise) or the Holder’s brokerage firm otherwise purchases, shares of Common
Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares
which the Holder anticipated receiving upon such exercise (a “Buy-In”), then the
Company shall (A) pay in cash to the Holder the amount, if any, by which (x) the
Holder’s total purchase price (including brokerage commissions, if any) for the
shares of Common Stock so purchased exceeds (y) the amount obtained by
multiplying (1) the number of Warrant Shares that the Company was required to
deliver to the Holder in connection with the exercise at issue times (2) the
price at which the sell order giving rise to such purchase obligation was
executed, and (B) at the

     


    
      
         


      

      
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    option of
the Holder, either reinstate the portion of the Warrant and equivalent number of
Warrant Shares for which such exercise was not honored (in which case such
exercise shall be deemed rescinded) or deliver to the Holder the number of
shares of Common Stock that would have been issued had the Company timely
complied with its exercise and delivery obligations hereunder.  The
Holder shall provide the Company written notice indicating the amounts payable
to the Holder in respect of the Buy-In and, upon request of the Company,
evidence of the amount of such loss.  Nothing herein shall limit a
Holder’s right to pursue any other remedies available to it hereunder, at law or
in equity including, without limitation, a decree of specific performance and/or
injunctive relief with respect to the Company’s failure to timely deliver
certificates representing shares of Common Stock upon exercise of the Warrant as
required pursuant to the terms hereof.

     

    Cashless Exercise.
 Notwithstanding
anything contained herein to the contrary, the Holder may, in its sole
discretion, exercise this Warrant in whole or in part and, in lieu of making the
cash payment otherwise contemplated to be made to the Company upon such exercise
in payment of the Aggregate Exercise Price, elect instead to receive upon such
exercise the "Net Number" of shares of Common Stock determined according to the
following formula (a "Cashless
Exercise"):

     

    
      
        
          
            
              
                	
                        Net
      Number =

                      	
                        (A x B) - (A x C)

                      
	 	
                         B

                      


              

            

          

        

      

    

    


     

    For purposes of the foregoing
formula:

     

    A = the
total number of shares with respect to which this Warrant is then being
exercised.

     

    B = the
Weighted Average Price of the shares of Common Stock (as reported by Bloomberg)
for the five (5) consecutive Trading Days ending on the date immediately
preceding the date of the Exercise Notice.

     

    C = the
Exercise Price then in effect for the applicable Warrant Shares at the time of
such exercise.

     

    Disputes.  In
the case of a dispute as to the determination of the Exercise Price or the
arithmetic calculation of the Warrant Shares, the Company shall promptly issue
to the Holder the number of Warrant Shares that are not disputed and resolve
such dispute in accordance with Section 12.

     

    Limitations on Exercises;
Beneficial Ownership.  The Company shall not effect the
exercise of this Warrant, and the Holder shall not have the right to exercise
this Warrant, to the extent that after giving effect to such exercise, such
Person (together with such Person's affiliates) would beneficially own in excess
of 9.80% (the "Maximum
Percentage") of the shares of Common Stock outstanding immediately after
giving effect to such exercise.  For purposes of the foregoing
sentence, the aggregate number of shares of Common Stock
beneficially

     


    
      
         


      

      
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    owned by
such Person and its affiliates shall include the number of shares of Common
Stock issuable upon exercise of this Warrant with respect to which the
determination of such sentence is being made, but shall exclude shares of Common
Stock which would be issuable upon (A) exercise of the remaining, unexercised
portion of this Warrant beneficially owned by such Person and its affiliates and
(B) exercise or conversion of the unexercised or unconverted portion of any
other securities of the Company beneficially owned by such Person and its
affiliates (including, without limitation, any convertible notes or convertible
preferred shares or warrants) subject to a limitation on conversion or exercise
analogous to the limitation contained herein.  Except as set forth in
the preceding sentence, for purposes of this paragraph, beneficial ownership
shall be calculated in accordance with Section 13(d) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act").  For
purposes of this Warrant, in determining the number of outstanding shares of
Common Stock, the Holder may rely on the number of outstanding shares of Common
Stock as reflected in (1) the Company's most recent Form 10-K, Form 10-Q,
Current Report on Form 8-K or other public filing with the Securities and
Exchange Commission, as the case may be, (2) a more recent public announcement
by the Company or (3) any other notice by the Company or the Transfer Agent
setting forth the number of shares of Common Stock outstanding.  For
any reason at any time, upon the written or oral request of the Holder, the
Company shall within one (1) Business Day confirm orally and in writing to the
Holder the number of shares of Common Stock then outstanding.  In any
case, the number of outstanding shares of Common Stock shall be determined after
giving effect to the conversion or exercise of securities of the Company,
including the SPA Warrants, by the Holder and its affiliates since the date as
of which such number of outstanding shares of Common Stock was
reported.  By written notice to the Company, the Holder may from time
to time increase or decrease the Maximum Percentage to any other percentage not
in excess of 9.99% specified in such notice; provided that (i) any such increase
will not be effective until the sixty-first (61st) day
after such notice is delivered to the Company, and (ii) any such increase or
decrease will apply only to the Holder and not to any other holder of SPA
Warrants.  The provisions of this paragraph shall be construed and
implemented in a manner otherwise than in strict conformity with the terms of
this Section 1(f) to correct this paragraph (or any portion hereof) which may be
defective or inconsistent with the intended beneficial ownership limitation
herein contained or to make changes or supplements necessary or desirable to
properly give effect to such limitation.

     

    Insufficient Authorized
Shares.  If at any time while any of the Warrants remain
outstanding the Company does not have a sufficient number of authorized and
unreserved shares of Common Stock to satisfy its obligation to reserve for
issuance upon exercise of the Warrants at least a number of shares of Common
Stock equal to 100% (the "Required Reserve Amount") of
the number of shares of Common Stock as shall from time to time be necessary to
effect the exercise of all Warrants then outstanding (an "Authorized Share Failure"),
then the Company shall immediately take all action necessary to increase the
Company's authorized shares of Common Stock to an amount sufficient to allow the
Company to reserve the Required Reserve Amount for all Warrants then
outstanding.  Without limiting the generality of the foregoing
sentence, as soon as practicable after the date of the occurrence of an
Authorized Share Failure, but in no event later than sixty (60) days after the
occurrence of such Authorized Share Failure, the Company shall hold a meeting of
its shareholders for the approval of an increase in the number of authorized
shares of Common Stock.  In connection with such meeting, the Company
shall provide each shareholder with a proxy statement and shall use its best
efforts to solicit

     


    
      
         


      

      
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    its
shareholders' approval of such increase in authorized shares of Common Stock and
to cause its board of directors to recommend to the shareholders that they
approve such proposal.

     

    ADJUSTMENT
OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES.  The Exercise Price
and the number of Warrant Shares shall be adjusted from time to time as
follows:

     

    Adjustment upon Issuance of
shares of Common Stock. If and whenever on or after the Subscription Date
the Company issues or sells, or in accordance with this Section 2 is deemed to
have issued or sold, any shares of Common Stock (including the issuance or sale
of shares of Common Stock owned or held by or for the account of the Company,
but excluding shares of Common Stock deemed to have been issued or sold by the
Company in connection with any Excluded Securities) for a consideration per
share (the “New Issuance Price”) less than a price (the “Applicable Price”)
equal to the Exercise Price in effect immediately prior to such issue or sale or
deemed issuance or sale (the foregoing a “Dilutive Issuance”), then immediately
after such Dilutive Issuance, the Exercise Price then in effect shall be reduced
to an amount equal to the New Issuance Price. Upon each such adjustment of the
Exercise Price hereunder, the number of Warrant Shares shall be adjusted to the
number of shares of Common Stock determined by multiplying the Exercise Price in
effect immediately prior to such adjustment by the number of Warrant Shares
acquirable upon exercise of this Warrant immediately prior to such adjustment
and dividing the product thereof by the Exercise Price resulting from such
adjustment. For purposes of determining the adjusted Exercise Price under this
Section 2(a), the following shall be applicable:

     

    (i)
Issuance of Options. If the Company in any manner grants any Options and the
lowest price per share for which one share of Common Stock is issuable upon the
exercise of any such Option or upon conversion, exercise or exchange of any
Convertible Securities issuable upon exercise of any such Option is less than
the Applicable Price, then such share of Common Stock shall be deemed to be
outstanding and to have been issued and sold by the Company at the time of the
granting or sale of such Option for such price per share. For purposes of this
Section 2(a)(i), the “lowest price per share for which one share of Common Stock
is issuable upon exercise of such Options or upon conversion, exercise or
exchange of such Convertible Securities issuable upon exercise of any such
Option” shall be equal to the sum of the lowest amounts of consideration (if
any) received or receivable by the Company with respect to any one share of
Common Stock upon the granting or sale of the Option, upon exercise of the
Option and upon conversion, exercise or exchange of any Convertible Security
issuable upon exercise of such Option. No further adjustment of the Exercise
Price or number of Warrant Shares shall be made upon the actual issuance of such
shares of Common Stock or of such Convertible Securities upon the exercise of
such Options or upon the actual issuance of such shares of Common Stock upon
conversion, exercise or exchange of such Convertible Securities.

     

    (ii)
Issuance of Convertible Securities. If the Company in any manner issues or sells
any Convertible Securities and the lowest price per share for which one share of
Common Stock is issuable upon the conversion, exercise or exchange thereof is
less than the Applicable Price, then such share of Common Stock shall be deemed
to be outstanding and to have been issued and sold by the Company at the time of
the issuance or sale of such Convertible Securities for such price

     


    
      
         


      

      
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    per
share. For the purposes of this Section 2(a)(ii), the “lowest price per share
for which one share of Common Stock is issuable upon the conversion, exercise or
exchange thereof” shall be equal to the sum of the lowest amounts of
consideration (if any) received or receivable by the Company with respect to one
share of Common Stock upon the issuance or sale of the Convertible Security and
upon conversion, exercise or exchange of such Convertible Security. No further
adjustment of the Exercise Price or number of Warrant Shares shall be made upon
the actual issuance of such shares of Common Stock upon conversion, exercise or
exchange of such Convertible Securities, and if any such issue or sale of such
Convertible Securities is made upon exercise of any Options for which adjustment
of this Warrant has been or is to be made pursuant to other provisions of this
Section 2(a), no further adjustment of the Exercise Price or number of Warrant
Shares shall be made by reason of such issue or sale.

     

    (iii)
Change in Option Price or Rate of Conversion. If the purchase price provided for
in any Options, the additional consideration, if any, payable upon the issue,
conversion, exercise or exchange of any Convertible Securities, or the rate at
which any Convertible Securities are convertible into or exercisable or
exchangeable for shares of Common Stock increases or decreases at any time, the
Exercise Price and the number of Warrant Shares in effect at the time of such
increase or decrease shall be adjusted to the Exercise Price and the number of
Warrant Shares which would have been in effect at such time had such Options or
Convertible Securities provided for such increased or decreased purchase price,
additional consideration or increased or decreased conversion rate, as the case
may be, at the time initially granted, issued or sold. For purposes of this
Section 2(a)(iii), if the terms of any Option or Convertible Security that was
outstanding as of the date of issuance of this Warrant are increased or
decreased in the manner described in the immediately preceding sentence, then
such Option or Convertible Security and the shares of Common Stock deemed
issuable upon exercise, conversion or exchange thereof shall be deemed to have
been issued as of the date of such increase or decrease. No adjustment pursuant
to this Section 2(a) shall be made if such adjustment would result in an
increase of the Exercise Price then in effect or a decrease in the number of
Warrant Shares.

     

    (iv)
Calculation of Consideration Received. In case any Option is issued in
connection with the issue or sale of other securities of the Company, together
comprising one integrated transaction in which no specific consideration is
allocated to such Options by the parties thereto, (x) the Options will be deemed
to have been issued for a value determined by use of the Black Scholes Option
Pricing Model (the “Option Value”) and (y) the other securities issued or sold
in such integrated transaction shall be deemed to have been issued for the
difference of (I) the aggregate consideration received by the Company, less (II)
the Option Value. If any shares of Common Stock, Options or Convertible
Securities are issued or sold or deemed to have been issued or sold for cash,
the consideration received therefor will be deemed to be the net amount received
by the Company therefor. If any shares of Common Stock, Options or Convertible
Securities are issued or sold for a consideration other than cash, the amount of
such consideration received by the Company will be the fair value of such
consideration, except where such consideration consists of securities, in which
case the amount of consideration received by the Company will be the Closing
Sale Price of such security on the date of receipt. If any shares of Common
Stock, Options or Convertible Securities are issued to the owners of the
non-surviving entity in connection with any merger in which the Company is the
surviving entity, the amount of consideration therefor will be deemed to be the
fair value of such portion of the net assets and business of the

     


    
      
         


      

      
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    non-surviving
entity as is attributable to such shares of Common Stock, Options or Convertible
Securities, as the case may be. The fair value of any consideration other than
cash or securities will be determined jointly by the Company and the Required
Holders. If such parties are unable to reach agreement within ten (10) days
after the occurrence of an event requiring valuation (the “Valuation Event”),
the fair value of such consideration will be determined within five (5) Business
Days after the tenth (10th) day following the Valuation Event by an independent,
reputable appraiser jointly selected by the Company and the Required Holders.
The determination of such appraiser shall be final and binding upon all parties
absent manifest error and the fees and expenses of such appraiser shall be borne
by the Company.

     

    (v)
Record Date. If the Company takes a record of the holders of shares of Common
Stock for the purpose of entitling them (A) to receive a dividend or other
distribution payable in shares of Common Stock, Options or in Convertible
Securities or (B) to subscribe for or purchase shares of Common Stock, Options
or Convertible Securities, then such record date will be deemed to be the date
of the issue or sale of the shares of Common Stock deemed to have been issued or
sold upon the declaration of such dividend or the making of such other
distribution or the date of the granting of such right of subscription or
purchase, as the case may be.

     

    Adjustment upon Subdivision
or Combination of shares of Common Stock.  If the Company at
any time on or after the Subscription Date subdivides (by any share split,
dividend, recapitalization or otherwise) one or more classes of its outstanding
shares of Common Stock into a greater number of shares, the Exercise Price in
effect immediately prior to such subdivision will be proportionately reduced and
the number of Warrant Shares will be proportionately increased.  If
the Company at any time on or after the Subscription Date combines (by
combination, reverse share split or otherwise) one or more classes of its
outstanding shares of Common Stock into a smaller number of shares, the Exercise
Price in effect immediately prior to such combination will be proportionately
increased and the number of Warrant Shares will be proportionately
decreased.  Any adjustment under this Section 2(b) shall become
effective at the close of business on the date the subdivision or combination
becomes effective.

     

    Other
Events.  If any event occurs of the type contemplated by the
provisions of this Section 2 but not expressly provided for by such provisions
(including, without limitation, the granting of share appreciation rights,
phantom share rights or other rights with equity features), then the Company's
Board of Directors will make an appropriate adjustment in the Exercise Price and
the number of Warrant Shares so as to protect the rights of the Holder; provided
that no such adjustment pursuant to this Section 2(c) will increase the Exercise
Price or decrease the number of Warrant Shares as otherwise determined pursuant
to this Section 2.

     

    Voluntary Adjustment By
Company. The Company may at any time during the term of this Warrant
reduce the then current Exercise Price to any amount and for any period of time
deemed appropriate by the Board of Directors of the Company.

     

    RIGHTS
UPON DISTRIBUTION OF ASSETS.  If the Company shall declare or make any
dividend or other distribution of its assets (or rights to acquire its assets)
to holders of shares of Common Stock, by way of return of capital or otherwise
(including, without limitation, any distribution of cash, share or other
securities, property or options by way of a dividend, spin

     


    
      
         


      

      
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    off,
reclassification, corporate rearrangement, scheme of arrangement or other
similar transaction) (a "Distribution"), at any time
after the issuance of this Warrant, then, in each such case:

     

    any
Exercise Price in effect immediately prior to the close of business on the
record date fixed for the determination of holders of shares of Common Stock
entitled to receive the Distribution shall be reduced, effective as of the close
of business on such record date, to a price determined by multiplying such
Exercise Price by a fraction of which (i) the numerator shall be the Closing Bid
Price of the shares of Common Stock on the Trading Day immediately preceding
such record date minus the value of the Distribution (as determined in good
faith by the Company's Board of Directors) applicable to one share of Common
Stock, and (ii) the denominator shall be the Closing Bid Price of the shares of
Common Stock on the Trading Day immediately preceding such record date;
and

     

    the
number of Warrant Shares shall be increased to a number of shares equal to the
number of shares of Common Stock obtainable immediately prior to the close of
business on the record date fixed for the determination of holders of shares of
Common Stock entitled to receive the Distribution multiplied by the reciprocal
of the fraction set forth in the immediately preceding paragraph (a); provided
that in the event that the Distribution of common shares ("Other Shares of Common Stock")
of a company whose common shares are traded on a national securities exchange or
a national automated quotation system, then the Holder may elect to receive a
warrant to purchase Other Shares of Common Stock in lieu of an increase in the
number of Warrant Shares, the terms of which shall be identical to those of this
Warrant, except that such warrant shall be exercisable into the number of shares
of Other Shares of Common Stock that would have been payable to the Holder
pursuant to the Distribution had the Holder exercised this Warrant immediately
prior to such record date and with an aggregate exercise price equal to the
product of the amount by which the exercise price of this Warrant was decreased
with respect to the Distribution pursuant to the terms of the immediately
preceding paragraph (a) and the number of Warrant Shares calculated in
accordance with the first part of this paragraph (b).

     

    PURCHASE
RIGHTS; FUNDAMENTAL TRANSACTIONS.

     

    Purchase
Rights.  In addition to any adjustments pursuant to Section 2
above, if at any time the Company grants, issues or sells any Options,
Convertible Securities or rights to purchase shares, warrants, securities or
other property pro rata to the record holders of any class of shares of Common
Stock (the "Purchase
Rights"), then the Holder will be entitled to acquire, upon the terms
applicable to such Purchase Rights, the aggregate Purchase Rights which the
Holder could have acquired if the Holder had held the number of shares of Common
Stock acquirable upon complete exercise of this Warrant (without regard to any
limitations on the exercise of this Warrant) immediately before the date on
which a record is taken for the grant, issuance or sale of such Purchase Rights,
or, if no such record is taken, the date as of which the record holders of
shares of Common Stock are to be determined for the grant, issue or sale of such
Purchase Rights.

     

    Fundamental
Transactions.  The Company shall not enter into or be party to
a Fundamental Transaction unless (i)  the Successor Entity assumes in
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    of the
Company under this Warrant in accordance with the provisions of this Section
(4)(b) pursuant to written agreements in form and substance satisfactory to the
Required Holders and approved by the Required Holders prior to such Fundamental
Transaction, including agreements to deliver to each holder of Warrants in
exchange for such Warrants a security of the Successor Entity evidenced by a
written instrument substantially similar in form and substance to this Warrant,
including, without limitation, an adjusted exercise price equal to the value for
the shares of Common Stock reflected by the terms of such Fundamental
Transaction, and exercisable for a corresponding number of shares of capital
stock equivalent to the shares of Common Stock acquirable and receivable upon
exercise of this Warrant (without regard to any limitations on the exercise of
this Warrant) prior to such Fundamental Transaction, and satisfactory to the
Required Holders and (ii) the Successor Entity (including its Parent
Entity) is a publicly traded corporation whose common stock is quoted on or
listed for trading on an Eligible Market.  Upon the occurrence of any
Fundamental Transaction, the Successor Entity shall succeed to, and be
substituted for (so that from and after the date of such Fundamental
Transaction, the provisions of this Warrant referring to the "Company" shall
refer instead to the Successor Entity), and may exercise every right and power
of the Company and shall assume all of the obligations of the Company under this
Warrant with the same effect as if such Successor Entity had been named as the
Company herein.  Upon consummation of the Fundamental Transaction, the
Successor Entity shall deliver to the Holder confirmation that there shall be
issued upon exercise of this Warrant at any time after the consummation of the
Fundamental Transaction, in lieu of the shares of the Common Stock (or other
securities, cash, assets or other property) issuable upon the exercise of this
Warrant prior to such Fundamental Transaction, such shares of the publicly
traded Common Stock (or its equivalent) of the Successor Entity (including its
Parent Entity) which the Holder would have been entitled to receive upon the
happening of such Fundamental Transaction had this Warrant been converted
immediately prior to such Fundamental Transaction, as adjusted in accordance
with the provisions of this Warrant.  In addition to and not in
substitution for any other rights hereunder, prior to the consummation of any
Fundamental Transaction pursuant to which holders of shares of Common Stock are
entitled to receive securities or other assets with respect to or in exchange
for shares of Common Stock (a "Corporate Event"), the Company
shall make appropriate provision to insure that the Holder will thereafter have
the right to receive upon an exercise of this Warrant at any time after the
consummation of the Fundamental Transaction but prior to the Expiration Date, in
lieu of the shares of the Common Stock (or other securities, cash, assets or
other property) issuable upon the exercise of this Warrant prior to such
Fundamental Transaction, such shares of stock, securities, cash, assets or any
other property whatsoever (including warrants or other purchase or subscription
rights) which the Holder would have been entitled to receive upon the happening
of such Fundamental Transaction had this Warrant been exercised immediately
prior to such Fundamental Transaction.  Provision made pursuant to the
preceding sentence shall be in a form and substance reasonably satisfactory to
the Required Holders.  The provisions of this Section shall apply
similarly and equally to successive Fundamental Transactions and Corporate
Events and shall be applied without regard to any limitations on the exercise of
this Warrant.

     

    Notwithstanding
the foregoing, in the event of a Change of Control, at the request of the Holder
delivered before the ninetieth (90th) day after the consummation of such Change
of Control, the Company (or the Successor Entity) shall purchase this Warrant
from the Holder by paying to the Holder, within five (5) Business Days of such
request (or, if later, on the

     


    
      
         


      

      
        -9-

        
          

        

      

      
         


      

    


    effective
date of the Change of Control, cash in an amount equal to the Black Scholes
Value of the remaining unexercised portion of this Warrant on the date of such
Change of Control.

     

    WARRANT
HOLDER NOT DEEMED A STOCKHOLDER.  Except as otherwise specifically
provided herein, the Holder, solely in such Person's capacity as a holder of
this Warrant, shall not be entitled to vote or receive dividends or be deemed
the holder of share capital of the Company for any purpose, nor shall anything
contained in this Warrant be construed to confer upon the Holder, solely in such
Person's capacity as the Holder of this Warrant, any of the rights of a
shareholder of the Company or any right to vote, give or withhold consent to any
corporate action (whether any reorganization, issue of shares, reclassification
of shares, consolidation, merger, conveyance or otherwise), receive notice of
meetings, receive dividends or subscription rights, or otherwise, prior to the
issuance to the Holder of the Warrant Shares which such Person is then entitled
to receive upon the due exercise of this Warrant.  In addition,
nothing contained in this Warrant shall be construed as imposing any liabilities
on the Holder to purchase any securities (upon exercise of this Warrant or
otherwise) or as a shareholder of the Company, whether such liabilities are
asserted by the Company or by creditors of the
Company.  Notwithstanding this Section 5, the Company shall provide
the Holder with copies of the same notices and other information given to the
shareholders of the Company generally, contemporaneously with the giving thereof
to the shareholders.

     

    NONCIRCUMVENTION.  The
Company hereby covenants and agrees that the Company will not, by amendment of
its Certificate of Incorporation, Bylaws or through any reorganization, transfer
of assets, consolidation, merger, scheme of arrangement, dissolution, issue or
sale of securities, or any other voluntary action, avoid or seek to avoid the
observance or performance of any of the terms of this Warrant, and will at all
times in good faith carry out all the provisions of this Warrant and take all
action as may be required to protect the rights of the
Holder.  Without limiting the generality of the foregoing, the Company
(i) shall not increase the par value of any shares of Common Stock
receivable upon the exercise of this Warrant above the Exercise Price then in
effect, (ii) shall take all such actions as may be necessary or appropriate
in order that the Company may validly and legally issue fully paid and
nonassessable shares of Common Stock upon the exercise of this Warrant, and
(iii) shall, so long as any of the SPA Warrants are outstanding, take all action
necessary to reserve and keep available out of its authorized and unissued
shares of Common Stock, solely for the purpose of effecting the exercise of the
SPA Warrants, 100% of the number of shares of Common Stock as shall from time to
time be necessary to effect the exercise of the SPA Warrants then outstanding
(without regard to any limitations on exercise).

     

    REISSUANCE
OF WARRANTS.

     

    Transfer of
Warrant.  If this Warrant is to be transferred, the Holder
shall surrender this Warrant to the Company, whereupon the Company will
forthwith issue and deliver upon the order of the Holder a new Warrant (in
accordance with Section 7(d)), registered as the Holder may request,
representing the right to purchase the number of Warrant Shares being
transferred by the Holder and, if less than the total number of Warrant Shares
then underlying this Warrant is being transferred, a new Warrant (in accordance
with Section 7(d)) to the Holder representing the right to purchase the number
of Warrant Shares not being transferred.

     


    
      
         


      

      
        -10-

        
          

        

      

      
         


      

    


    


     

    Lost, Stolen or Mutilated
Warrant.  Upon receipt by the Company of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant, and, in the case of loss, theft or destruction, of any
indemnification undertaking by the Holder to the Company in customary form and,
in the case of mutilation, upon surrender and cancellation of this Warrant, the
Company shall execute and deliver to the Holder a new Warrant (in accordance
with Section 7(d)) representing the right to purchase the Warrant Shares then
underlying this Warrant.

     

    Exchangeable for Multiple
Warrants.  This Warrant is exchangeable, upon the surrender
hereof by the Holder at the principal office of the Company, for a new Warrant
or Warrants (in accordance with Section 7(d)) representing in the aggregate the
right to purchase the number of Warrant Shares then underlying this Warrant, and
each such new Warrant will represent the right to purchase such portion of such
Warrant Shares as is designated by the Holder at the time of such surrender;
provided, however, that no Warrants for fractional shares of Common Stock shall
be given.

     

    Issuance of New
Warrants.  Whenever the Company is required to issue a new
Warrant pursuant to the terms of this Warrant, such new Warrant (i) shall be of
like tenor with this Warrant, (ii) shall represent, as indicated on the face of
such new Warrant, the right to purchase the Warrant Shares then underlying this
Warrant (or in the case of a new Warrant being issued pursuant to Section 7(a)
or Section 7(c), the Warrant Shares designated by the Holder which, when added
to the number of shares of Common Stock underlying the other new Warrants issued
in connection with such issuance, does not exceed the number of Warrant Shares
then underlying this Warrant), (iii) shall have an issuance date, as indicated
on the face of such new Warrant which is the same as the Issuance Date, and (iv)
shall have the same rights and conditions as this Warrant.

     

    NOTICES.  Whenever
notice is required to be given under this Warrant, unless otherwise provided
herein, such notice shall be given in accordance with Section 9(f) of the
Securities Purchase Agreement.  The Company shall provide the Holder
with prompt written notice of all actions taken pursuant to this Warrant,
including in reasonable detail a description of such action and the reason
therefor.  Without limiting the generality of the foregoing, the
Company will give written notice to the Holder (i) immediately upon any
adjustment of the Exercise Price, setting forth in reasonable detail, and
certifying, the calculation of such adjustment and (ii) at least fifteen (15)
days prior to the date on which the Company closes its books or takes a record
(A) with respect to any dividend or distribution upon the shares of Common
Stock, (B) with respect to any grants, issuances or sales of any Options,
Convertible Securities or rights to purchase shares, warrants, securities or
other property to holders of shares of Common Stock or (C) for determining
rights to vote with respect to any Fundamental Transaction, dissolution or
liquidation, provided in each case that such information shall be made known to
the public prior to or in conjunction with such notice being provided to the
Holder.

     

    AMENDMENT
AND WAIVER.  Except as otherwise provided herein, the provisions of
this Warrant may be amended and the Company may take any action herein
prohibited,

     


    
      
         


      

      
        -11-

        
          

        

      

      
         


      

    


    or omit
to perform any act herein required to be performed by it, only if the Company
has obtained the written consent of the Holder.

     

    GOVERNING
LAW.  This Warrant shall be governed by and construed and enforced in
accor­dance with, and all questions concerning the construction, validity,
interpretation and performance of this Warrant shall be governed by, the
internal laws of the State of New York, without giving effect to any choice of
law or conflict of law provision or rule (whether of the State of New York or
any other jurisdictions) that would cause the application of the laws of any
jurisdictions other than the State of New York.

     

    CONSTRUCTION;
HEADINGS.  This Warrant shall be deemed to be jointly drafted by the
Company and all the Buyers and shall not be construed against any person as the
drafter hereof.  The headings of this Warrant are for convenience of
reference and shall not form part of, or affect the interpretation of, this
Warrant.

     

    DISPUTE
RESOLUTION.  In the case of a dispute as to the determination of the
Exercise Price with respect to some or all of this Warrant or the arithmetic
calculation of the Warrant Shares, the Company shall submit the disputed
determinations or arithmetic calculations via facsimile within two (2) Business
Days of receipt of the Exercise Notice giving rise to such dispute, as the case
may be, to the Holder.  If the Holder and the Company are unable to
agree upon such determination or calculation of the Exercise Price or the
Warrant Shares within three (3) Business Days of such disputed determination or
arithmetic calculation being submitted to the Holder, then the Company shall,
within two (2) Business Days submit via facsimile (a) the disputed determination
of the Exercise Price to an independent, reputable investment bank selected by
the Company and approved by the Holder  or (b) the disputed arithmetic
calculation of the Warrant Shares to the Company's independent, outside
accountant.  The Company shall cause at its expense the investment
bank or the accountant, as the case may be, to perform the determinations or
calculations and notify the Company and the Holder of the results no later than
ten Business Days from the time it receives the disputed determinations or
calculations.  Such investment bank's or accountant's determination or
calculation, as the case may be, shall be binding upon all parties absent
demonstrable error.

     

    REMEDIES,
OTHER OBLIGATIONS, BREACHES AND INJUNCTIVE RELIEF.  The remedies
provided in this Warrant shall be cumulative and in addition to all other
remedies available under this Warrant, at law or in equity (including a decree
of specific performance and/or other injunctive relief), and nothing herein
shall limit the right of the Holder to pursue actual damages for any failure by
the Company to comply with the terms of this Warrant.  The Company
acknowledges that a breach by it of its obligations hereunder will cause
irreparable harm to the Holder and that the remedy at law for any such breach
may be inadequate.  The Company therefore agrees that, in the event of
any such breach or threatened breach, the holder of this Warrant shall be
entitled, in addition to all other available remedies, to an injunction
restraining any breach, without the necessity of showing economic loss and
without any bond or other security being required.

     

    TRANSFER.  This
Warrant may be offered for sale, sold, transferred or assigned without the
consent of the Company, except as may be required by Section 2(f) of the
Securities

     


    
      
         


      

      
        -12-

        
          

        

      

      
         


      

    


    Purchase
Agreement. The Holder shall give prompt notice to the Company of any such sale,
transfer or assignment.

     

    SEVERABILITY.  If
any provision of this Agreement is prohibited by law or otherwise determined to
be invalid or unenforceable by a court of competent jurisdiction, the provision
that would otherwise be prohibited, invalid or unenforceable shall be deemed
amended to apply to the broadest extent that it would be valid and enforceable,
and the invalidity or unenforceability of such provision shall not affect the
validity of the remaining provisions of this Agreement so long as this Agreement
as so modified continues to express, without material change, the original
intentions of the parties as to the subject matter hereof and the prohibited
nature, invalidity or unenforceability of the provision(s) in question does not
substantially impair the respective expectations or reciprocal obligations of
the parties or the practical realization of the benefits that would otherwise be
conferred upon the parties.  The parties will endeavor in good faith
negotiations to replace the prohibited, invalid or unenforceable provision(s)
with a valid provision(s), the effect of which comes as close as possible to
that of the prohibited, invalid or unenforceable provision(s).

     

    CERTAIN
DEFINITIONS.  For purposes of this Warrant, the following terms shall
have the following meanings:

     

    "Approved Stock Plan” means any
employee benefit plan which has been approved by the Board of Directors of the
Company, pursuant to which the Company’s securities may be issued to any
employee, officer or director for services provided to the Company.

     

    "Black Scholes Value" means the
value of this Warrant based on the Black and Scholes Option Pricing Model
obtained from the "OV" function on Bloomberg determined as of the day of the
closing of the applicable Fundamental Transaction for pricing purposes and
reflecting (i) a risk-free interest rate corresponding to the U.S. Treasury rate
for a period equal to the remaining term of this Warrant as of such date of
request, (ii) an expected volatility equal to the greater of 100% and the 100
day volatility obtained from the HVT function on Bloomberg as of the day
immediately following the public announcement of the applicable Fundamental
Transaction and (iii) the underlying price per share used in such calculation
shall be the sum of the price per share being offered in cash, if any, plus the
value of any non cash consideration, if any, being offered in the Fundamental
Transaction.

     

    "Bloomberg" means Bloomberg
Financial Markets.

     

    "Business Day" means any day
other than Saturday, Sunday or other day on which commercial banks in The City
of New York are authorized or required by law to remain closed.

     

    "Change of Control" means any
Fundamental Transaction other than (A) any reorganization, recapitalization or
reclassification of the Common Stock, in which holders of the Company's voting
power immediately prior to such reorganization, recapitalization or
reclassification continue after such reorganization, recapitalization or
reclassification to hold publicly traded securities and, directly or indirectly,
the voting power of the surviving entity or entities

     


    
      
         


      

      
        -13-

        
          

        

      

      
         


      

    


    necessary
to elect a majority of the members of the board of directors (or their
equivalent if other than a corporation) of such entity or entities, or (B)
pursuant to a migratory merger effected solely for the purpose of changing the
jurisdiction of incorporation of the Company.

     

    "Closing Bid Price" and "Closing Sale Price" means, for
any security as of any date, the last closing bid price and last closing trade
price, respectively, for such security on the Principal Market, as reported by
Bloomberg, or, if the Principal Market begins to operate on an extended hours
basis and does not designate the closing bid price or the closing trade price,
as the case may be, then the last bid price or last trade price, respectively,
of such security prior to 4:00:00 p.m., New York Time, as reported by Bloomberg,
or, if the Principal Market is not the principal securities exchange or trading
market for such security, the last closing bid price or last trade price,
respectively, of such security on the principal securities exchange or trading
market where such security is listed or traded as reported by Bloomberg, or if
the foregoing do not apply, the last closing bid price or last trade price,
respectively, of such security in the over-the-counter market on the electronic
bulletin board for such security as reported by Bloomberg, or, if no closing bid
price or last trade price, respectively, is reported for such security by
Bloomberg, the average of the bid prices, or the ask prices, respectively, of
any market makers for such security as reported in the "pink sheets" by Pink
Sheets LLC (formerly the National Quotation Bureau, Inc.).  If the
Closing Bid Price or the Closing Sale Price cannot be calculated for a security
on a particular date on any of the foregoing bases, the Closing Bid Price or the
Closing Sale Price, as the case may be, of such security on such date shall be
the fair market value as mutually determined by the Company and the
Holder.  If the Company and the Holder are unable to agree upon the
fair market value of such security, then such dispute shall be resolved pursuant
to Section 12.  All such determinations to be appropriately adjusted
for any dividend, share split, share combination or other similar transaction
during the applicable calculation period.

     

    "Common Stock" means
(i) the Company's Common Shares, par value $0.005 per share, and
(ii) any share capital into which such Common Stock shall have been changed
or any share capital resulting from a reclassification of such Common
Stock.

     

    "Convertible Securities" means
any shares or securities (other than Options) directly or indirectly convertible
into or exercisable or exchangeable for shares of Common Stock.

     

    "Eligible Market" means the
Principal Market, The New York Stock Exchange, Inc., The NASDAQ Global Market,
The NASDAQ Capital Market or The NASDAQ Global Select Market.

     

    "Excluded Securities” means any
Common Stock issued or issuable: (I) (i) in connection with any Approved Stock
Plan; (ii) upon exercise of the SPA Warrants; (iii) in connection with any share
split, dividend, recapitalization or similar transaction by the Company for
which adjustment is made pursuant to Section 2(b); and (iv) upon exercise of any
Options or Convertible Securities which are outstanding on the day immediately
preceding the Subscription Date, provided that the terms of such Options or
Convertible Securities are not amended, modified or changed on or after the
Subscription Date;  (II) pursuant to an “at the money (ATM)” or
“dribble out” program entered into by the Company no later than sixty (60) days
following the

     


    
      
         


      

      
        -14-

        
          

        

      

      
         


      

    


    Subscription
Date, provided that the Company has complied with its obligations under Section
4.12 of the Securities Purchase Agreement with respect to such program; (III)
pursuant to warrants issued on a one-time basis to the lenders in connections
any refinancing or restructuring of existing secured bank financed indebtedness
of the Company; and (IV) pursuant to that certain Common Share Agreement, dated
October 21, 2008, by and between the Company and Azimuth Opportunity Ltd.,
provided that such agreement has not been amended since the Subscription
Date.

     

    "Expiration Date" means the
date that is five (5) years and six (6) months following the date that all of
the Warrant Shares shall be issuable without restriction or limitation of the
Maximum Percentage or, if such date falls on a day other than a Business Day or
on which trading does not take place on the Principal Market (a "Holiday"), the next day that
is not a Holiday.

     

    "Fundamental Transaction" means
that the Company shall directly or indirectly, in one or more related
transactions, (i) consolidate or merge with or into (whether or not the Company
is the surviving corporation) another Person, or (ii) sell, assign, transfer,
convey or otherwise dispose of all or substantially all of the properties or
assets of the Company to another Person, or (iii) allow another Person to make a
purchase, tender or exchange offer that is accepted by the holders of more than
the 50% of the outstanding shares of Common Stock (not including any shares of
Common Stock held by the Person or Persons making or party to, or associated or
affiliated with the Persons making or party to, such purchase, tender or
exchange offer), or (iv) consummate a share purchase agreement or other business
combination (including, without limitation, a reorganization, recapitalization,
spin-off or scheme of arrangement) with another Person whereby such other Person
acquires more than the 50% of the outstanding shares of Common Stock (not
including any shares of Common Stock held by the other Person or other Persons
making or party to, or associated or affiliated with the other Persons making or
party to, such share purchase agreement or other business combination), or (v)
reorganize, recapitalize or reclassify its Common Stock, or (vi) any "person" or
"group" (as these terms are used for purposes of Sections 13(d) and 14(d) of the
Exchange Act), become the "beneficial owner" (as defined in Rule 13d-3 under the
Exchange Act), directly or indirectly, of 50% of the aggregate ordinary voting
power represented by issued and outstanding Common Stock.

     

    "Options" means any rights,
warrants or options to subscribe for or purchase shares of Common Stock or
Convertible Securities.

     

    "Parent Entity" of a Person
means an entity that, directly or indirectly, controls the applicable Person and
whose common stock or equivalent equity security is quoted or listed on an
Eligible Market, or, if there is more than one such Person or Parent Entity, the
Person or Parent Entity with the largest public market capitalization as of the
date of consummation of the Fundamental Transaction.

     

    "Person" means an individual, a
limited liability company, a partnership, a joint venture, a corporation, a
trust, an unincorporated organization, any other entity and a government or any
department or agency thereof.

     


    
      
         


      

      
        -15-

        
          

        

      

      
         


      

    


    


     

    "Principal Market" means The
Nasdaq Global Market.

     

    "Registration Rights Agreement"
means that certain Registration Rights Agreement dated as of the Subscription
Date by and among the Company and the Buyers.

     

    "Required Holders" means the
holders of the SPA Warrants representing at least sixty percent (60%) of the
shares of Common Stock underlying the SPA Warrants then
outstanding.

     

    "Successor Entity" means the
Person (or, if so elected by the Required Holders, the Parent Entity) formed by,
resulting from or surviving any Fundamental Transaction or the Person (or, if so
elected by the Required Holders, the Parent Entity) with which such Fundamental
Transaction shall have been entered into.

     

    "Trading Day" means any day on
which the Common Stock is traded on the Principal Market, or, if the Principal
Market is not the principal trading market for the Common Stock, then on the
principal securities exchange or securities market on which the Common Stock is
then traded; provided that "Trading Day" shall not include any day on which the
Common Stock is scheduled to trade on such exchange or market for less than 4.5
hours or any day that the Common Stock is suspended from trading during the
final hour of trading on such exchange or market (or if such exchange or market
does not designate in advance the closing time of trading on such exchange or
market, then during the hour ending at 4:00:00 p.m., New York
Time).

     

    "Weighted Average Price" means,
for any security as of any date, the dollar volume-weighted average price for
such security on the Principal Market during the period beginning at 9:30:01
a.m., New York Time (or such other time as the Principal Market publicly
announces as the official open of trading), and ending at 4:00:00 p.m., New York
Time (or such other time as the Principal Market publicly announces is the
official close of trading) as reported by Bloomberg through its "Volume at
Price" function, or, if the foregoing does not apply, the dollar volume-weighted
average price of such security in the over-the-counter market on the electronic
bulletin board for such security during the period beginning at 9:30:01 a.m.,
New York Time (or such other time as such market publicly announces is the
official open of trading), and ending at 4:00:00 p.m., New York Time (or such
other time as such market publicly announces is the official close of trading)
as reported by Bloomberg, or, if no dollar volume-weighted average price is
reported for such security by Bloomberg for such hours, the average of the
highest closing bid price and the lowest closing ask price of any of the market
makers for such security as reported in the "pink sheets" by Pink Sheets LLC
(formerly the National Quotation Bureau, Inc.).  If the Weighted
Average Price cannot be calculated for a security on a particular date on any of
the foregoing bases, the Weighted Average Price of such security on such date
shall be the fair market value as mutually determined by the Company and the
Holder.  If the Company and the Holder are unable to agree upon the
fair market value of such security, then such dispute shall be resolved pursuant
to Section 12.  All such determinations are to be
appropriately

     


    
      
         


      

      
        -16-

        
          

        

      

      
         


      

    


    adjusted
for any dividend, share split, share combination or other similar transaction
during the applicable calculation period.

     

    [Signature
Page Follows]


    
      
         


      

      
        -17-

        
          

        

      

      
         


      

    


    IN WITNESS WHEREOF, the
Company has caused this Warrant to Purchase Common Stock to be duly executed as
of the Issuance Date set out above.

    


    


    
      
        
          
            
              
                
                  
                    
                      
                        	 	 
      

                                XOMA
      LTD.

                              
	 
      
	 
      
	 	
                                By:

                              
	 	
                                Name:

                              
	 	
                                Title:

                              


                      

                    

                  

                

              

            

          

        

      

    


    
      
         


      

      
         
Signature Page to Common Stock Purchase Warrant

        
          

        

      

      
         


      

    


     EXHIBIT
A

    EXERCISE
NOTICE

    TO
BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS

    WARRANT
TO PURCHASE COMMON STOCK

    


    
      	
               
      

            	
              XOMA
      LTD.

            


    

    


    The undersigned holder hereby exercises
the right to purchase _________________ of the shares of Common Stock ("Warrant Shares") of XOMA Ltd.,
a Bermuda corporation (the "Company"), evidenced by the
attached Warrant to Purchase Common Stock (the "Warrant").  Capitalized
terms used herein and not otherwise defined shall have the respective meanings
set forth in the Warrant.

     

    1.           Form
of Exercise Price.  The Holder intends that payment of the Exercise
Price shall be made as:

     

    
      	
               
      

            	
              ____________

            	
              a
      "Cash
      Exercise" with respect to _________________ Warrant Shares;
      and/or

            


    

     

    
      	
               
      

            	
              ____________

            	
              a
      "Cashless
      Exercise" with respect to _______________ Warrant
      Shares.

            


    

     

    2.           Payment
of Exercise Price.  In the event that the holder has elected a Cash
Exercise with respect to some or all of the Warrant Shares to be issued pursuant
hereto, the holder shall pay the Aggregate Exercise Price in the sum of
$___________________ to the Company in accordance with the terms of the
Warrant.

     

    3.           Delivery
of Warrant Shares.  The Company shall deliver to the holder __________
Warrant Shares in accordance with the terms of the Warrant.

     

    


     

    Date:
_______________ __, ______

     

    


       
_____________________________
       
Name of Registered Holder

     

    
 

    
      
        
          
            
              
                
                  	
                          By:

                        	 
      	 
      
	 
      	
                          Name:

                        	 
      
	 
      	
                          Title:

                        	 
      


                

              

            

          

        

      




    
      
         


      

      
         


        
          

        

      

      
         


      

    


    ACKNOWLEDGMENT

     

    


     

    The Company hereby acknowledges this
Exercise Notice and hereby directs [Insert Stock
Transfer Agent] to issue the above indicated number of shares of Common
Stock in accordance with the Transfer Agent Instructions dated [●], 2009 from the Company and
acknowledged and agreed to by [Insert Stock
Transfer Agent].

     

    
      
        
          
            
              	 	
                      XOMA
      LTD.

                       

                       

                    
	 	 
      

                      By:

                    	 
	 	
                    	 Name:
      

                      Title:

                    


            

          

        

      

    

     

     

    
      
        
        

      

      
         
Signature Page to Common Stock Purchase Warrant