Separation Agreement



  
 Exhibit 10.13

 April 21, 2010 
 Laura
Killmer 
 6122 La Pintura Drive 
 La
Jolla, CA 92037 
 Dear Laura: 
 This
letter sets forth the separation agreement (the “Agreement”) that Ambit Biosciences Corporation (the “Company”) is offering to you to aid in your employment transition. This Agreement will become effective on the “Effective
Date” as defined in section 13 herein. 
 1. Separation. Your last day of work with the Company and your employment
termination date will be April 5, 2010 (the “Separation Date”). 
 2. Accrued Salary And Paid Time Off. On
the Separation Date, the Company will pay you all accrued salary, and all accrued and unused vacation earned through the Separation Date, subject to standard payroll deductions and withholdings. You are entitled to these payments by law. 

3. Severance Payment. Although the Company has no policy or procedure for providing severance benefits, provided that this
Agreement becomes effective, the Company will deliver to you or your attorney, as you direct, the amount of $40,000.00, less any taxes or withholding that may be due and payable, within five (5) business days following the Effective Date.

 4. Stock Options. Under the terms of your stock option agreement and the applicable plan documents, vesting of your
stock options will cease as of the Separation Date. Your right to exercise any vested shares, and all other rights and obligations with respect to your stock options(s), will be as set forth in your stock option agreement, grant notice and
applicable plan documents. 
 5. Option Exercise. The Company shall extend the exercise period for your Options such that
you may exercise any vested Options on or before April 5, 2011. 
 6. Other Compensation or Benefits. You
acknowledge that, except as expressly provided in this Agreement, you will not receive any additional compensation, severance, or benefits after the Separation Date. 
 7. Expense Reimbursements. You agree that, within ten (10) days of the Separation Date, you will submit your final documented expense reimbursement statement reflecting all business expenses
you incurred in accordance with Company policy through the Separation 








 Laura Kilmer 
 April 21, 2010 
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Date, if any, for which you seek reimbursement. The Company will reimburse you for these expenses pursuant to its regular business practice. 

8. Return of Company Property. By the Separation Date, you agree to return to the Company all Company documents (and all copies
thereof) and other Company property that you have had in your possession at any time, including, but not limited to, Company files, notes, drawings, records, business plans and forecasts, financial information, specifications, computer-recorded
information, tangible property (including, but not limited to, computers), credit cards, entry cards, identification badges, and keys; and, any materials of any kind that contain or embody any proprietary or confidential information of the Company
(and all reproductions thereof). Your timely return of all such Company documents and other property is a condition precedent to your receipt of the severance benefits provided under this Agreement. 

9. Proprietary Information Obligations. You acknowledge your continuing obligations under your Proprietary Information and
Inventions Agreement, a copy of which is attached hereto as Exhibit A. 
 10. Confidentiality. The provisions of this
Agreement will be held in strictest confidence by you and the Company and will not be publicized or disclosed in any manner whatsoever; provided, however, that: (a) you may disclose this Agreement in confidence to your immediate family;
(b) the parties may disclose this Agreement in confidence to their respective attorneys, accountants, auditors, tax preparers, and financial advisors; (c) the Company may disclose this Agreement as necessary to fulfill standard or legally
required corporate reporting or disclosure requirements; and (d) the parties may disclose this Agreement insofar as such disclosure may be necessary to enforce its terms or as otherwise required by law. In particular, and without limitation,
you agree not to disclose the terms of this Agreement to any current or former Company employee. 
 11. No Admissions.
You understand and agree that the promises and payments in consideration of this Agreement shall not be construed to be an admission of any liability or obligation by the Company to you or to any other person, and that the Company makes no such
admission. 
 12. Release of Claims. In exchange for the consideration under this Agreement to which you would not
otherwise be entitled, you hereby generally and completely release the Company and its directors, officers, employees, shareholders, partners, agents, attorneys, predecessors, successors, parent and subsidiary entities, insurers, affiliates, and
assigns from any and all claims, liabilities and obligations, both known and unknown, that arise out of or are in any way related to events, acts, conduct, or omissions occurring at any time prior to and including the date you sign this Agreement.
This general release includes, but is not limited to: (a) all claims arising out of or in any way related to your employment with the Company or the termination of that employment; (b) all claims related to your compensation or benefits
from the Company, including salary, bonuses, commissions, vacation pay, expense reimbursements, severance pay, fringe benefits, stock, stock options, or any other ownership interests in the 








 Laura Kilmer 
 April 21, 2010 
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Company; (c) all claims for breach of contract, wrongful termination, and breach of the implied covenant of good faith and fair dealing; (d) all tort claims, including claims for fraud,
defamation, emotional distress, and discharge in violation of public policy; and (e) all federal, state, and local statutory claims, including claims for discrimination, harassment, retaliation, attorneys’ fees, or other claims arising
under the federal Civil Rights Act of 1964 (as amended), the federal Americans with Disabilities Act of 1990, the federal Age Discrimination in Employment Act of 1967, as amended (“ADEA”), and the California Fair Employment and Housing Act
(as amended). The release of claims in this Agreement does not extend to those rights which as a matter of law cannot be waived, including but not limited to unwaivable rights the you may have under the California Labor Code. 

13. ADEA Waiver. You acknowledge that you are knowingly and voluntarily waiving and releasing any rights you may have under the
Federal Age Discrimination in Employment Act (the “ADEA”), and that the consideration given for the waiver and release in the preceding paragraphs is in addition to anything of value to which you were already entitled. You
further acknowledge that you have been advised by this writing that: (a) your waiver and release do not apply to any rights or claims that may arise after the execution date of this Agreement; (b) you should consult with an attorney prior
to executing this Agreement; (c) you have twenty-one (21) days to consider this Agreement (although you may choose to voluntarily execute this Agreement earlier); (d) you have seven (7) days following the execution of this
Agreement by the parties to revoke the Agreement; and (e) this Agreement will not be effective until the date upon which the revocation period has expired, provided that you have not earlier revoked the Agreement (the “Effective
Date”). You will not receive any of the benefits provided by this Agreement until after the Effective Date. 

14. Section 1542 Waiver. In granting the release herein, which includes claims which may be unknown to you at present, you
acknowledge that you have read and understand Section 1542 of the California Civil Code: “A general release does not extend to claims which the creditor does not know or suspect to exist in his favor at the time of executing the
release, which if known by him must have materially affected his settlement with the debtor.” You hereby expressly waive and relinquish all rights and benefits under that section and any law or legal principle of similar effect in any
jurisdiction with respect to the releases granted herein, including but not limited to the release of unknown and unsuspected claims granted in this Agreement. 
 15. Miscellaneous. This Agreement, including Exhibit A, constitutes the complete, final and exclusive embodiment of the entire agreement between you and the Company with regard to its subject
matter. It is entered into without reliance on any promise or representation, written or oral, other than those expressly contained herein, and it supersedes any other such promises, warranties or representations. This Agreement may not be modified
or amended except in a writing signed by both you and a duly authorized officer of the Company. This Agreement will bind the heirs, personal representatives, successors and assigns of both you and the Company, and inure to the benefit of both you
and the Company, their heirs, successors and 








 Laura Kilmer 
 April 21, 2010 
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assigns. If any provision of this Agreement is determined to be invalid or unenforceable, in whole or in part, this determination will not affect any other provision of this Agreement and the
provision in question will be modified so as to be rendered enforceable. This Agreement will be deemed-to have-been-entered-into and will be construed and enforced in-accordance-with the laws of the State of California as applied to contracts made
and to be performed entirely within California. Any ambiguity in this Agreement shall not be construed against either party as the drafter. Any waiver of a breach of this Agreement shall be in writing and shall not be deemed to be a waiver of any
successive breach. This Agreement may be executed in counterparts and facsimile signatures will suffice as original signatures. 
 If this
Agreement is acceptable to you, please sign below and return the original to me. 
 We wish you the best in your future endeavors. 

 

			
	Sincerely,
	
	AMBIT BIOSCIENCES CORPORATION
		
	By:	 	 /s/ Kerry Ann Kelly

		 	Kerry A. Kelly, VP and General Counsel

 I
HAVE READ, UNDERSTAND AND AGREE FULLY TO THE FOREGOING AGREEMENT: 

 

					
	 /s/ Laura Killmer

	 Laura Killmer

	
	 Date: April 27, 2010