Document:

1992 Directors Share Option Plan as amended and restated

 Exhibit 10.3 
 XOMA LTD. 
 1992 DIRECTORS SHARE OPTION PLAN 
 (As Amended and Restated Through May 19, 2004) 
 1. General. The XOMA Ltd. 1992 Directors Share Option Plan (the “Plan”) was adopted on February 20, 1992 (the “Adoption Date”) by the Board of Directors of XOMA Ltd. (the “Company”), subject to the
approval of the Company’s shareholders at its 1992 annual meeting. A total of 600,000 of the Company’s Common Shares, par value $.0005 per share (“Common Shares”), have been reserved for issuance hereunder. The Plan provides for
the granting to non-employee directors of the Company of non-qualified options (“Options” or “Option”) to purchase Common Shares. 
 2. Purposes. The purposes of the Plan are to increase the proprietary interest of non-employee directors in the Company by granting them non-qualified options to purchase Common Shares, to promote long-term
shareholder value through the potential for increased ownership of Common Shares by non-employee directors, and to encourage the continued service on the Board of Directors (the “Board”) of non-employee directors. 
 3. Administration. The Plan is designed to operate automatically and not require administration. However, to the extent that administration is
necessary, the Plan shall be administered by those members of the Board who are not eligible to participate in the Plan (the “Plan Administrators”). Since it is intended that this Plan provide for grants of Options to non-employee
directors of the Company, this function will be limited to matters of administrative oversight. Decisions and determinations of the Plan Administrators shall be final and binding upon all persons having an interest in the Plan. The Plan
Administrators will have no discretion with respect to the selection of optionees or the determination of the exercise price, the timing of grants or the number of shares covered by the Options granted hereunder. The Plan Administrators will receive
no additional compensation for their services in connection with the administration of the Plan. 
 4. Eligibility. Each member
of the Board who is not a full or part-time employee of the Company or of any subsidiary or affiliate of the Company (“Director”) shall be entitled to participate in the Plan. 
 5. Grants under the Plan. All Options granted under the Plan shall be non-statutory options, not entitled to special tax treatment under
Section 422 of the Internal Revenue Code of 1986, as amended (the “Code”). The number of Common Shares available for grants under the Plan shall not exceed 600,000 shares, subject to adjustment as provided in Section 7. The
shares with respect to which a particular Option has been granted are hereinafter referred to as “Optioned Shares.” The written agreement evidencing each Option granted under the Plan (the “Agreement”) shall be dated as of the
applicable date of grant. Each Director accepting an Option grant shall execute and return a copy of the Agreement to the Company. If any outstanding Option shall terminate for any reason without having been exercised in full, the shares applicable
to the unexercised portion of such Option shall again become available under the Plan. 

 6. Share Options. 
 (a) Initial Grants. On the Adoption Date (which shall be the date of grant for purposes of paragraphs 6(c), (d) and (e)) of
the Plan, each Director shall be granted an Option to purchase that number of Common Shares equal to 10,000 minus the number of Common Shares with respect to which options have been previously granted to such Director (without regard to the status
of such Director at the time of any such prior grant, whether any such prior grant was made pursuant to another plan of the company or any other circumstances of any such prior grant), subject to the approval of the Plan by the Company’s
shareholders at the 1992 Annual Meeting. Each person who becomes a Director for the first time after the Effective Date (as defined below) through calendar year 1997 shall be granted an Option on the six-month anniversary of the date such person
becomes a Director to purchase that number of Common Shares equal to 10,000 minus the number of Common Shares with respect to which options have been previously granted to such Director (without regard to the status of such Director at the time of
any such prior grant, whether any such prior grant was made pursuant to another plan of the Company or any other circumstances of any such prior grant). Each person who becomes a Director for the first time beginning calendar year 1998 through
calendar year 2003 shall be granted an Option on the six-month anniversary of the date such person becomes a Director to purchase that number of Common Shares equal to 15,000 minus the number of Common Shares with respect to which options have been
previously granted to such Director (without regard to the status of such Director at the time of any such prior grant, whether any such prior grant was made pursuant to another plan of the Company or any other circumstances of any such prior
grant). Each person who becomes a Director for the first time beginning calendar year 2004 shall be granted an Option on the date such person becomes a Director to purchase that number of Common Shares equal to 20,000 minus the number of Common
Shares with respect to which options have been previously granted to such Director (without regard to the status of such Director at the time of any such prior grant, whether any such prior grant was made pursuant to another plan of the Company or
any other circumstances of any such prior grant). 
 (b) Regular Annual Grants. On each date that the Company holds its
annual meeting of shareholders commencing with the 1993 and ending with the 1997 calendar years, immediately after the annual election of directors, each Director then in office (other than those Directors first elected at such meeting) will receive
a grant of an Option to purchase 1,000 shares, provided that no Director will receive under this Plan Options to purchase a total of more than 25,000 shares. On each date that the Company holds its annual meeting of shareholders commencing with the
1998 and ending with the 2003 calendar years, immediately after the annual election of directors, each Director then in office (other than those Directors first elected at such meeting) will receive a grant of an Option to purchase 7,500 shares,
provided that no Director will receive under this Plan Options to purchase a total of more than 75,000 shares. On each date that the Company holds its annual meeting of shareholders commencing with the 2004 calendar year, immediately after the
annual election of directors, each Director then in office (other than those Directors first elected at such meeting) will receive a grant of an Option to purchase 10,000 shares. 

 (c) Option Exercise Price. The per share price to be paid by the Director at the
time an Option is exercised shall be 100% of the fair market value of the Common Shares on the date of grant. “Fair market value” shall be determined as follows: 
 (i) If the Common Shares are not at the time listed or admitted to trading on any stock exchange but is traded in the over-the-counter
market, the fair market value shall be the closing selling price per Common Share on the date in question, as such price is reported by the National Association of Securities Dealers through its Nasdaq National Market System or any successor system.
If there is no reported closing selling price for Common Shares on the date in question, then the closing selling price on the last preceding date for which such quotation exists shall be determinative of fair market value. 
 (ii) If the Common Shares are at the time listed or admitted to trading on any stock exchange, then the fair market value shall be the
closing selling price per Common Share on the date in question on the stock exchange which is the primary market for the Common Shares, as such price is officially quoted on such exchange. If there is no reported sale of Common Shares on such
exchange on the date in question, then the fair market value shall be the closing selling price on the exchange on the last preceding date for which such quotation exists. 
 (d) Maximum Term of Option. Each Option shall have a maximum term of ten (10) years from the date of grant. 
 (e) Date of Exercise. Provided that an optionee hereunder (an “Optionee”) remains a Director, and except as otherwise
provided in paragraph 8(a), 
 (i) the Options granted in Section 6(a) hereof commencing with the 1992 and ending with
the 2003 calendar years shall become exercisable in accordance with the following schedule: 
  

	 	(A)	With respect to Options granted pursuant to the first sentence of Section 6(a) hereof, each such Option shall become exercisable with respect to 20% of the Optioned Shares on
the date of grant; 

  

	 	(B)	Each Option shall become exercisable with respect to 20% (or, in the case of Options referred to in clause (A) above, an additional 20%) of the Optional Shares after the
expiration of one year from the date of grant; 

  

	 	(C)	Each Option shall become exercisable with respect to an additional 20% of the Optional Shares after the expiration of two years from the date of grant; 

  

	 	(D)	Each Option shall become exercisable with respect to an additional 20% of the Optioned Shares after the expiration of three years from the date of grant; 

	 	(E)	Each Option shall become exercisable with respect to an additional 20% (or, in the case of Options referred to in clause (A) above, the remaining 20%) of the Optional Shares
after the expiration of four years from the date of grant; 

  

	 	(F)	With respect to Options other than those referred to in clause (A) above, each such Option shall become exercisable with respect to the remaining 20% of the Optioned Shares
after the expiration of five years from the date of grant; and 

 (ii) the Options granted in Section 6(a)
hereof commencing with the 2004 calendar years shall become exercisable after the expiration of one year from the date of grant; and 
 (iii) the Options granted in Section 6(b) hereof shall become exercisable on the date of grant. 
 Exercisable installments may
be exercised in whole or in part and, to the extent not exercised, shall accumulate and be exercisable at any time on or before the Expiration Date or sooner termination of the Option term. 
 (f) Accelerated Termination of Option Term. The option term with respect to a particular Option granted hereunder shall terminate
(and such Option shall cease to be exercisable) prior to the specified expiration date thereof (the “Expiration Date”) should one of the following provisions become applicable: 
 (i) Except as otherwise provided in subparagraphs (ii), (iii) and (iv) below, should Optionee cease to be a Director at any time
during the option term, then Optionee shall have up to a three (3) month period commencing with the date of such cessation of Director status in which to exercise this Option, but in no event shall this Option be exercisable at any time after
the Expiration Date. During such limited period of exercisability, the Option may not be exercised for more than the number of Optioned Shares (if any) for which it is exercisable at the date of Optionee’s cessation of Director status. Upon the
expiration of such limited period of exercisability or (if earlier) upon the Expiration Date, the Option shall terminate and cease to be outstanding. 
 (ii) Should Optionee die while such Option is outstanding, then the personal representative of Optionee’s estate or the person or persons to whom the Option is transferred shall have the right to exercise this
Option, but only with respect to that number of Optioned shares (if any) for which Option is exercisable on the date of Optionee’s death. Such right shall lapse and the Option shall cease to be exercisable upon the earlier of
(A) the expiration of the one (1) year period measured from the date of Optionee’s death or (B) the specified Expiration Date of the Option term. 
 (iii) Should Optionee become permanently disabled and cease by reason thereof to be a Director at any time during the Option term, then
Optionee shall have a period of twelve (12) months (commencing with the date of such cessation of Director status) during which to exercise such Option; provided, however, that in no event shall the Option be exercisable at any time after

 
the Expiration Date. During such limited period of exercisability, the Option may not be exercised for more that the number of Optioned Shares (if any) for
which this Option is exercisable at the date of Optionee’s cessation of Director status. Upon the expiration of such limited period of exercisability or (if earlier) upon the Expiration Date, the Option shall terminate and cease to be
outstanding. Optionee shall be deemed to be permanently disabled if Optionee is, by reason of any medically determinable physical or mental impairment expected to result in death or to be of continuous duration of not less than 12 consecutive months
or more, unable to perform his/her usual duties as a director of the Company. 
 (iv) Should Optionee’s status as a
Director be terminated on account of any act of (A) fraud or intentional misrepresentation, or (B) embezzlement, misappropriation or conversion of assets or opportunities of the Company, or any unauthorized disclosure of confidential
information or trade secrets of the Company, such Option shall terminate and cease to be exercisable immediately upon the date of such termination of Director status. 
 (g) Method of Exercise. An Option may be exercised with respect to all or any part of the shares of Common Shares for which such
Option is at the time exercisable. Each notice of exercise shall be accompanied by the full purchase price of the shares being purchased, with such payment to be made in cash or by check. 
 (h) Transferability. Options are transferable and assignable to the spouse of the Optionee or a descendent of the Optionee (any
such spouse or descendent, an “Immediate Family Member”) or a corporation, partnership, limited liability company or trust so long as all of the shareholders, partners, members or beneficiaries thereof, as the case may be, are either the
Optionee or an Immediate Family Member of the Optionee, provided that (i) there may be no consideration for any such transfer and (ii) subsequent transfers or transferred options will be prohibited other than by will, by the laws of
descent and distribution or pursuant to a “qualified domestic relations order” as such term is defined by the Code or the Employee Retirement Income Security Act of 1974 (“ERISA”). Following transfer, any such options will
continue to be subject to the same terms and conditions as were applicable immediately prior to transfer, provided that for purposes of the option agreement the term “Optionee” will refer to the transferee. 
 7. Adjustment Upon Changes in Capitalization. 
 (a) If the number of shares of the Company as a whole are increased, decreased or changed into, or exchanged for, a different number or kind of shares or securities of the Company, whether through reclassification,
share dividend, share split, combination of shares, exchange of shares, change in corporate structure or the like, an appropriate and proportionate adjustment shall be made in the number and kind of shares subject to the Plan, and in the number,
kind and per share exercise price of shares subject to unexercised Options or portions thereof granted prior to any such change. Any such adjustment in an outstanding Option, however, shall be made without a change in the total price applicable to
the unexercised portion of the Option but with a corresponding adjustment in the price for each share covered by the Option. 

 (b) If the Company is the surviving or continuing entity in any merger, amalgamation or
other business combination, then an Option shall be appropriately adjusted to apply and pertain to the number and class of securities which the holder of the number of Common Shares subject to an Option immediately prior to such merger, amalgamation
or other business combination would have been entitled to receive in the consummation of such merger, amalgamation or other business combination, and appropriate adjustment shall be made to the option price payable per share, provided the aggregate
option price shall remain the same. 
 8. Corporate Transaction. 
 (a) In the event of one or more of the following transactions (“Corporate Transaction”): 
 (i) a merger, amalgamation or acquisition in which the Company is not the surviving or continuing entity, except for a transaction the
principal purpose of which is to change the jurisdiction of the Company’s incorporation, 
 (ii) the sale, transfer or
other disposition of all or substantially all of the assets of the Company, or 
 (iii) any other business combination in
which fifty percent (50%) or more of the Company’s outstanding voting shares are transferred to different holders in a single transaction or a series of related transactions, 
 then the exercisablity of an Option shall automatically be accelerated so that such Option may be exercised for any or all of the Common Shares subject to
such Option. No such acceleration of exercise dates shall occur, however, if and to the extent the terms of any agreement relating to such Corporate Transaction provide as a prerequisite to the consummation of such Corporate Transaction that
outstanding options purchase Common Shares (including an Option issued pursuant to this Plan) are to be assumed by the successor corporation or parent thereof or are to be replaced with options to purchase capital shares of the successor corporation
or parent thereof. In any such case, an appropriate adjustment as to the number and kind of shares and the per share exercise prices shall be made. No fractional shares shall be issued under the Plan on account of any adjustment specified above.
Upon the consummation of the Corporate Transaction, an Option shall, to the extent not previously exercised or assumed by the successor corporation or its parent company, terminate and cease to be exercisable. 
 (b) This Plan shall not in any way affect the right of the company to adjust, reclassify, reorganize or otherwise make changes in its
capital or business structure or to merge, amalgamate, consolidate, dissolve, liquidate or sell or transfer all or any part of its business or assets. 
 9. Amendment and Termination of Plan. The Board may make such amendments to the Plan and to any Agreements hereunder as it shall deem advisable; provided, however, that the Board may not, without further
approval by the affirmative votes of the holders of a majority of the securities of the Company present, or represented, and entitled to vote at a shareholders meeting duly held in accordance with applicable laws, increase the number of shares as to
which 

 
Options may be granted under this Plan (except as otherwise permitted in paragraph 8(a) hereof), materially increase the benefits accruing to participants
under this Plan or materially modify the requirements as to eligibility for participation under this Plan. In addition, the Board may not amend the Plan or Agreement hereunder more than once every six months, other than to comport with changes in
the Code or the rules thereunder. The Board may terminate the Plan at any time within its absolute discretion. No such termination, other than that provided in Section8(a) hereof, shall in any way affect any Option then outstanding. 
 10. Miscellaneous Provisions. Neither the Plan nor any action taken hereunder shall be construed as giving any Director any right to be nominated
for re-election to the Board. The Plan shall be governed by the laws of the State of California. 
 11. Effective Date. The Plan was
initially adopted by the Board on February 20, 1992 and approved by the Company shareholders at the 1992 Annual Meeting, to be effective as of February 20, 1992 (the “Effective Date”). Amendments to the Plan regarding transfer
provisions were adopted by the Board on October 30, 1996 and approved by the shareholders at the 1997 Annual Meeting. Further amendments to the amended and restated Plan to increase the number of shares issuable under the Plan were adopted by
the Board on February 25, 1998 and approved by the shareholders at the 1998 Annual Meeting. The Plan was further amended to reflect the Company’s change of domicile from Delaware to Bermuda and the new restatement of the Plan, effective
December 31, 1998, was adopted by the Board in February of 1999. An amendment and restatement of the Plan was adopted by the Board on February 25, 2004 and approved by the shareholders at the 2004 Annual Meeting.Form of Share Option Agreement for 1992 Directors Share Option Plan

 Exhibit 10.3A 
 Share Option Agreement 
 Under the XOMA Ltd. 
 1992 Directors Share Option Plan 
  

							
				
	(A)	  	Optionee:	  		  	
				
	(B)	  	Grant Date:	  	(E)	  	Expiration Date:
				
	(C)	  	Shares:	  	(F)	  	Exercise Price:
		  	[    ] shares	  		  	$[ ] per share
				
	(D)	  	Share Installments:	  	(G)	  	Option Type:
		  	All shares vest on [one year from date of grant]	  		  	Non-Qualified Share Option

 Subject to the terms of the XOMA Ltd. 1992 Directors Share Option Plan, as amended and restated
through May 19, 2004 (the “Plan”) and to the terms and conditions set forth in this agreement (the “Agreement”), XOMA Ltd. (the “Company”) has granted you, as of the Grant Date shown in item (B) above, a
non-qualified share option (not entitled to special tax treatment under Section 422 of the Internal Revenue Code of 1986, as amended (the “Code”)) to purchase the number of Common Shares of the Company shown in item (C) above
(the “Optioned Shares”) at the Exercise Price shown in item (F) above. 
 The details of your option are as follows:

 1. Term. This option has a maximum term of ten years measured from the Grant Date and will, unless sooner terminated in
accordance with Section 4 or Subsection 6(a) hereof, expire on the Expiration Date shown in item (E) above. Upon the Expiration Date or upon the sooner termination of this option under Section 4 or Subsection 6(a), this option will
cease to be exercisable and have no further force or effect whatsoever. 
 2. Transferability. This option is transferable and
assignable by you to your spouse or descendent (any such spouse or descendent, an “Immediate Family Member”) or a corporation, partnership, limited liability company or trust so long as all of the shareholders, partners, members or
beneficiaries thereof, as the case may be, are either you or an Immediate Family Member, provided that there may be no consideration for any such transfer, and, following transfer, (i) subsequent transfers of this option will be prohibited
other than by will or the laws of descent and distribution, and (ii) this option will continue to be subject to the same terms and conditions 

 
as were applicable immediately prior to transfer, provided that for purposes of this Agreement any references to “you” will refer to the
transferee. 
 3. Exercise Schedule. The option granted herein is exercisable with respect to 100% of the Optioned Shares
beginning on the first anniversary of the Grant Date and exerciseable shares may be exercised in whole or in part, and to the extent not exercised, will be exercisable at any time on or before the Expiration Date or sooner termination of the option
term. 
 4. Accelerated Termination of Option Term. The option term specified in Section 1 will terminate (and this option
will cease to be exercisable) prior to the Expiration Date should one of the following provisions become applicable: 
 (a) Except as
otherwise provided in Subsections (b), (c) and (d) below, if you cease to be a member of the Board of Directors of the Company who is not a full or part-time employee of the Company or of any subsidiary or affiliate of the Company (a
“Director”) at any time during the option term, then you will have up to three months commencing with the date of such cessation of Director status in which to exercise this option, but in no event will this option be exercisable at any
time after the Expiration Date. Upon the expiration of such limited period of exercisability or (if earlier) upon the Expiration Date, this option will terminate and cease to be outstanding. 
 (b) If you die while this option is outstanding, then the personal representative of your estate or the person or persons to whom the option is
transferred pursuant to your will or in accordance with the laws of descent and distribution will have the right to exercise this option. Such right will lapse and this option will cease to be exercisable upon the earlier of (i) the expiration
of the one-year period measured from the date of your death or (ii) the Expiration Date. 
 (c) If you become permanently disabled and
cease by reason thereof to be a Director at any time during the option term, then you will have a period of twelve months (commencing with the date of such cessation of Director status) during which to exercise this option; provided, however, that
in no event will this option be exercisable at any time after the Expiration Date. Upon the expiration of such limited period of exercisability or (if earlier) upon the Expiration Date, this option will terminate and cease to be outstanding. You
will be deemed to be permanently disabled if you are, by reason of any medically determinable physical or mental impairment expected to result in death or to be of continuous duration of not less than twelve consecutive months or more, unable to
perform your usual duties as a Director of the Company. 
 (d) If your status as a Director is terminated on account of any act of
(i) fraud or intentional misrepresentation or (ii) embezzlement, misappropriation or conversion of assets or opportunities of the Company, or any unauthorized disclosure of confidential information or trade secrets of the Company, this
option will terminate and cease to be exercisable immediately upon the date of such termination of Director status. 
 5. Adjustment
Upon Changes in Capitalization. 

 (a) If the number of shares of the Company as a whole is increased, decreased or changed into, or
exchanged for, a different number or kind of shares or securities of the Company, whether through reclassification, share dividend, share split, combination of shares, exchange of shares, change in corporate structure or the like, an appropriate and
proportionate adjustment will be made in the number, kind, and per share exercise price of shares subject to unexercised options or portions thereof granted prior to any such change. Any such adjustment in an outstanding portion, however, will be
made without a change in the total price applicable to the unexercised portion of the option, but with a corresponding adjustment in the price of each share covered by the option. 
 (b) If the Company is the surviving or continuing entity in any merger, amalgamation or other business combination, then this option will be
appropriately adjusted to apply and pertain to the number and class of securities which the holder of the number of Common Shares of the Company subject to this option immediately prior to such merger, amalgamation or other business combination
would have been entitled to receive in the consummation of such merger, amalgamation or other business combination, and an appropriate adjustment will be made to the Exercise Price payable per share, provided the aggregate Exercise Price will remain
the same. 
 6. Corporate Transaction. 
 (a) In the event of one or more of the following transactions (“Corporate Transaction”): 
 (i) a merger, amalgamation or acquisition in which the Company is not the surviving or continuing entity, except for a transaction the principal purpose of which is to change the jurisdiction of the Company’s incorporation, 

(ii) the sale, transfer or other disposition of all or substantially all of the assets of the Company, or 
 (iii) any other business combination in which fifty percent (50%) or more of the Company’s outstanding voting shares is
transferred to different holders in a single transaction or a series of related transactions, 
 then the exercisability of this option will automatically be
accelerated so that such option may be exercised simultaneously with consummation of such Corporate Transaction for any or all of the Common Shares of the Company subject to this option. No such acceleration of exercise dates will occur, however, if
and to the extent the terms of any agreement relating to such Corporate Transaction provide as a prerequisite to the consummation of such Corporate Transaction that outstanding options to purchase the Company’s Common Shares (including this
option) are to be assumed by the successor corporation or parent thereof or are to be replaced with options to purchase shares of capital stock of the successor corporation or parent thereof. In any such case, an appropriate adjustment as to the
number and kind of shares and the per share exercise prices will be made. No fractional shares will be issued on account of any adjustment specified above. Immediately following the consummation of the Corporate Transaction, this option will, to the
ex- 

 
tent not previously exercised or assumed by the successor corporation or its parent company, terminate and cease to be exercisable. 
 (b) This Agreement will not in any way affect the right of the Company to adjust, reclassify, reorganize or otherwise make changes in its capital or
business structure or to merge, amalgamate, consolidate, dissolve, liquidate or sell or transfer all or any part of its business or assets. 
 7. Privilege of Share Ownership. You will not have any rights of a shareholder of the Company with respect to the Optioned Shares until you have exercised the option, paid the Exercise Price and been issued the purchased
shares. 
 8. Manner of Exercising Option. 
 (a) In order to exercise this option with respect to all or any part of the Optioned Shares for which this option is at the time exercisable, you (or in the case of exercise after your death, your executor,
administrator, heir or legatee, as the case may be) must take the following actions: 
 (i) Provide the Secretary of the
Company with written notice of such exercise, specifying the number of Optioned Shares with respect to which the option is being exercised. 
 (ii) Pay the Exercise Price in full, in cash or by check payable to the Company’s order, for the Optioned Shares being purchased. 
 (iii) Furnish to the Company appropriate documentation that the person or persons exercising the option, if other than you, have the right
to exercise this option. 
 (b) In no event may this option be exercised for any fractional shares. 
 9. Compliance with Laws and Regulations. 
 (a) The exercise of this option and the issuance of Optioned Shares upon such exercise will be subject to compliance by the Company and by you with all applicable requirements of law relating thereto and with all
applicable regulations of any stock exchange on which Common Shares of the Company may be listed at the time of such exercise and issuance. 
 (b) In connection with the exercise of this option, you will execute and deliver to the Company such representations in writing as may be requested by the Company in order for it to comply with the applicable requirements of Federal and
State securities law. 
 10. Restrictive Legends. If and to the extent any Optioned Shares acquired under this option are not
registered under the Securities Act of 1933, the share certificates for such Optioned Shares will be endorsed with restrictive legends, including (without limitation) the following: 

 “The Shares represented by this certificate have not been registered under the Securities Act of
1933. The shares have been acquired for investment and may not be sold or offered for sale in the absence of (a) an effective registration statement for the shares under such Act, (b) a ‘no action’ letter of the Securities and
Exchange Commission with respect to such sale or offer, or (c) an opinion of counsel to the Company that registration under such Act is not required with respect to such sale or offer.” 
 11. Successors and Assigns. Except to the extent otherwise provided in Section 2 and Subsection 6(a), the provisions of this Agreement
will inure to the benefit of, and be binding upon, your successors, administrators, heirs, legal representatives and assigns and the successors and assigns of the Company. 
 12. Liability of the Company. 
 (a) If the Optioned Shares covered by this Agreement exceed, as of the Grant Date, the number of Common Shares of the Company which may without shareholder approval be issued under the Plan, then this option will be void with respect to
such excess shares unless shareholder approval of an amendment sufficiently increasing the number of Common Shares of the Company issuable under the Plan is obtained in accordance with the provisions of the Plan. 
 (b) The inability of the Company to obtain approval from any regulatory body having authority deemed by the Company to be necessary to the lawful
issuance and sale of any Common Shares pursuant to this option will relieve the Company of any liability in respect of the non-issuance or sale of such shares as to which such approval will not have been obtained. 
 13. No Right to Nomination. Neither this Agreement nor any action taken hereunder will be construed as giving you any right to be nominated
for re-election to the Board of Directors of the Company. 
 14. Notices. Any notice required to be given or delivered to the
Company under the terms of this Agreement will be in writing and addressed to the Company in care of its Secretary at its corporate offices. Any notice required to be given or delivered to you will be in writing and addressed to you at the address
indicated below your signature line herein. All notices will be deemed to be given or delivered upon personal delivery or upon deposit in the U.S. mail, postage prepaid and properly addressed to the party to be notified. 
 15. Construction. This Agreement and the option evidenced hereby are made and granted pursuant to the Plan and are in all respects limited
by and subject to the express terms and provisions of the Plan. Any dispute regarding the interpretation of this Agreement will be submitted to the Plan Administrator (as that term is defined in the Plan) for resolution. The decision of the Plan
Administrator will be final, binding and conclusive. Questions regarding this option or the Plan should be referred to the Legal Department of the Company. 

 16. Governing Law. The interpretation, performance, and enforcement of this Agreement will
be governed by the laws of the State of California. 

			
	XOMA LTD.
		
	By:	 	 
		 	Steven B.Engle
		 	Chairman of the Board
		 	Chief Executive Officer and President
		
	Dated:	 	 

 I hereby agree to be bound by the terms and conditions of this Agreement and the Plan.

  

			
		
	By:	 	 
		
	Dated:	 	 

 If the optionee resides in California or another community property jurisdiction, I, as the
optionee’s spouse, also agree to be bound by the terms and conditions of this Agreement and the Plan. 
  

			
		
	By:	 	 
		
	Dated:

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