Document:

HD-2.1.2015-EX-10.31

Exhibit 10.31

[Home Depot Letterhead]

February 22, 2007

Mr. Timothy M. Crow

Dear Tim:

I am pleased to confirm The Home Depot, Inc.’s (“Home Depot” or the “Company”) offer and your acceptance of a promotion to Executive Vice President - Human Resources, effective February 14, 2007, reporting directly to me. Your new base annual salary will be $460,000, effective February 22, 2007, payable in equal bi-weekly installments. Your next salary review will be held in April of 2008.   

In addition to your base salary, you will continue to participate in the Management Incentive Program (MIP) in accordance with its terms.  Beginning in fiscal year 2007, your annual incentive target will be equal to 100% of your base salary, based upon achieving established goals. You will also continue to participate in the Company's Long-Term Incentive Plan (LTIP) in accordance with its terms, which provides an incentive target of 75% of your base salary. To be eligible for payment of any MIP or LTIP incentive, you must be employed on the day on which the incentive is paid.

In addition to the standard benefits package for salaried associates, as an officer of the Company, you will continue to receive a death benefit only insurance policy and will become eligible for participation in the Company’s executive life insurance and leased car programs.  You are also eligible to continue participation in the Supplemental Executive Choice Program, which provides you with an annual supplemental benefit allowance.  Under this program you will receive an annual supplemental benefit allowance of $35,000. You can use this annual allowance to purchase additional disability or life insurance benefits, personal excess liability insurance, or you can use it to reimburse yourself for financial services or health care expenses not covered under our standard health plans.   

You agree that you shall not, without the prior express written consent of the Chief Executive Officer of the Company, engage in or have any financial or other interests in, or render any service in any capacity to any competitor or supplier of the Company or its parents, subsidiaries, affiliates, or related entities during the course of your employment with the Company.  Notwithstanding the foregoing, you shall not be restricted from owning securities of corporations listed on a national securities exchange or regularly traded by national securities dealers, provided that such investment does not exceed 1% of the market value of the outstanding securities of such corporation.  

In the event your employment with Home Depot is terminated for any reason, you agree not to disclose any Home Depot proprietary or confidential information to any future employer or third party or to take any such information, regardless of whether the information is in printed, written, or electronic form.  

Mr. Timothy M. Crow                                       
February 22, 2007
Page 2

By accepting this offer you acknowledge that you will be exposed to Company materials which are proprietary and confidential in nature and/or which constitute trade secrets, and, further, that you will receive training in the Company’s various merchandising, operations, financial, and/or other business processes. You further acknowledge that such proprietary and confidential information, including trade secrets and other business processes, are utilized by the Company throughout the entire United States and in other locations in which it conducts business.  Consequently, you agree that you will not, for a period of twenty-four (24) months subsequent to your termination from the Company, regardless of the reason for the termination, enter into or maintain an employment or contractual relationship, either directly or indirectly, to provide executive or managerial services in the same or similar manner as you did for the Company to any company or entity engaged in any way in a business that competes with Home Depot, its parents, subsidiaries, affiliates or related entities (collectively referred to as the "Company"), in the United States, Canada, Puerto Rico, Mexico, China, or any other location in which the Company conducts business prior to your termination date, without the prior written consent of the Chief Executive Officer of the Company.  Businesses that compete with the Company specifically include, but are not limited to, the following entities and each of their subsidiaries, affiliates, assigns, or successors in interest: Lowe’s Companies, Inc. (including, but not limited to, Eagle Hardware and Garden); Sears Holding Corp. (including, but not limited to, Orchard Supply and Hardware Company); RONA Inc.; B&Q; OBI; Homemart; Orient Home; Grainger; Ferguson; ServiceMaster; Menard, Inc.; Ace Hardware; True Value Company; and Wal-Mart.

You agree that you will not, for a period of thirty-six (36) months subsequent to your termination from Home Depot, regardless of the reason for the termination, directly or indirectly solicit or encourage any person who is an employee of the Company to terminate his or her relationship with the Company, or refer any such employee to anyone, without prior written approval from the Chief Executive Officer of the Company.

This letter should not be construed, nor is it intended to be a contract of employment for a specified period of time, and the Company reserves the right to terminate this agreement with or without cause at any time.  This letter supersedes any prior employment agreement or understandings, written or oral between you and the Company and contains the entire understanding of the Company and you with respect to the subject matter hereof.

This letter shall be construed, interpreted and applied in accordance with the law of the State of Delaware, without giving effect to the choice of law provisions thereof.  You agree to irrevocably submit any dispute arising out of or relating to this letter to the exclusive concurrent jurisdiction of the state and federal courts located in Delaware.  You also irrevocably waive, to the fullest extent permitted by applicable law, any objection you may now or hereafter have to the laying of venue of any such dispute brought in such court or any defense of inconvenient forum for the maintenance of such dispute, and you agree to accept service of legal process from the courts of Delaware.

Mr. Timothy M. Crow                                       
February 22, 2007
Page 3

We are excited about the opportunities that your leadership will bring to this role. Enclosed are duplicate originals of this letter.  Please countersign one original and return it to us.  The other original is for you.

Sincerely,

THE HOME DEPOT, INC.
                        
/s/ Frank Blake

Frank Blake
Chairman & Chief Executive Officer

	
					
	pc:
	Jim Snyder
	 
	 
	 

	 
	Tim Hourigan
	 
	 
	 

I accept this promotion to Executive Vice President - Human Resources.

/s/ Timothy M. Crow            
Timothy M. Crow

Date Signed:     February 22, 2007EX-10.1

 Exhibit 10.1 

EXCHANGE AGREEMENT 
 THIS
EXCHANGE AGREEMENT (the “Agreement”), dated as of March 25, 2015 (“Effective Date”), is made by and between MabVax Therapeutics Holdings, Inc., a Delaware corporation (“Company”), and the holder of the
Company’s Series A-1 Preferred Stock and Series A-1 Warrants signatory hereto (“Holder”). 
 WHEREAS, pursuant to that
certain Securities Purchase Agreement (the “Purchase Agreement”), dated as of February 12, 2014, by and between MabVax Therapeutics, Inc., a Delaware corporation (the “Private Company”), and the [Holder/investor
signatory thereto (the “Original Investor”)], whereby, among other things, [Holder/the Original Investor] purchased from the Private Company warrants (the “C Warrants”) to purchase shares of the Private Company’s common
stock, par value $0.001 per share, and shares of Series C-1 Convertible Preferred Stock (the “C-1 Preferred Shares”), the terms of which are set forth in the certificate of designations, preferences and rights of Series C-1 Convertible
Preferred Stock (the “C-1 Certificate of Designations”) in the form attached to the Purchase Agreement which C-1 Preferred Shares are convertible into the Private Company’s common stock, par value $0.001 per share, in accordance with
the terms of the C-1 Certificate of Designations; 
 WHEREAS, on July 8, 2014, the Private Company consummated a merger into a
wholly-owned subsidiary of the Company, pursuant to the terms and conditions of that certain Agreement and Plan of Merger (the “Merger Agreement”), dated as of May 12, 2014, by and among the Company, Tacoma Acquisition Corp., a
wholly-owned subsidiary of the Company, and the Private Company (the “Merger”), and pursuant to which (i) all outstanding C Warrants were exchanged for new warrants (the “Series A-1 Warrants”) to purchase shares of the
Company’s common stock, par value $0.01 per share (the “Common Stock”), (ii) all outstanding shares of C-1 Preferred Stock were exchanged for shares of Series A-1 Convertible Preferred Stock (the “Series A-1 Preferred
Stock” and collectively with the Series A-1 Warrants, the “Exchange Securities”), the terms of which are set forth in the certificate of designations, preferences and rights of Series A-1 Convertible Preferred Stock (the “A-1
Certificate of Designations”) in the form attached to the Merger Agreement as Exhibit E and as amended from time to time, which A-1 Preferred Shares are convertible into the Company’s Common Stock in accordance with the terms of the
A-1 Certificate of Designations, and (iii) the Company assumed the obligations of the Private Company under the Purchase Agreement; 

[WHEREAS, in March 2015, pursuant to the terms of a securities purchase agreement, the Holder purchased certain Exchange Securities from and
was assigned certain rights under the Purchase Agreement by the Original Investor;] 
 WHEREAS, the Holder holds such number of shares of
Series A-1 Preferred Stock and Series A-1 Warrants as set forth on Schedule A hereto; 
 WHEREAS, the Company has authorized a new
series of convertible preferred stock of the Company designated as Series D Convertible Preferred Stock, $0.01 par value, the terms of which are set forth in the Certificate of Designation of Preferences, Rights and Limitations of Series D
Convertible Preferred Stock (the “Certificate of Designations”) in the form attached hereto as Exhibit A (together with any convertible preferred shares issued in replacement thereof in accordance with the terms thereof, the
“Preferred Stock”), which Preferred Stock shall be convertible into the Company’s Common Stock, in accordance with the terms of the Certificate of Designations; 

WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to Section 3(a)(9) of the Securities Act of 1933,
as amended (the “Securities Act”), the Company desires to exchange with the Holder, and the Holder desires to exchange with the Company, the Exchange Securities for shares of the Company’s Common Stock, or, at the election of any
Holder who would, as a result of receipt of the Common Stock hold in excess of 4.99% of the Company’s issued and outstanding Common Stock, shares of Preferred Stock. 

NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and valuable consideration the
receipt and adequacy of which are hereby acknowledged, the Company and Holder agree as follows: 

 1. Terms of the Exchange. The Company and Holder agree that the Holder will exchange the
Exchange Securities and/or the Purchase Agreement and will relinquish any and all other rights he may have under the Exchange Securities in exchange for such number of shares of Common Stock (the “Shares”) or the Preferred Stock (the
“Preferred Shares”, and such Preferred Shares as converted into Common Stock, the “Conversion Shares”, and together with the Common Shares and the Preferred Shares, the “Securities”) as set forth on Schedule A,
annexed hereto. Additionally, the Holder hereby waives any and all unpaid dividends accrued, if any, on the Series A-1 Preferred Stock, as of the date of issuance and releases the Company from any payment thereof or obligation in connection
therewith. 
 2. Closing. Upon satisfaction of the conditions set forth herein, a closing shall occur at the principal offices of the
Company, or such other location as the parties shall mutually agree. At closing, Holder shall deliver certificates representing the Exchange Securities to the Company and the Company shall deliver to such Holder a certificate evidencing the Shares
or the Preferred Shares, as the case may be, in the name(s) and amount(s) as indicated on Schedule A annexed hereto. Upon closing, any and all obligations of the Company to Holder under the Exchange Securities and the Purchase Agreement shall
be fully satisfied, the certificates evidencing the Exchange Securities shall be cancelled and Holder will have no remaining rights, powers, privileges, remedies or interests under the Exchange Securities (including the A-1 Certificate of
Designation governing the Series A-1 Preferred Stock) or the Purchase Agreement. 
 3. Further Assurances 

Each party shall do and perform, or cause to be done and performed, all such further acts and things, and shall execute and deliver all such
other agreements, certificates, instruments and documents, as any other party may reasonably request in order to carry out the intent and accomplish the purposes of this Agreement and the consummation of the transactions contemplated hereby. 

4. Representations and Warranties of the Holder. The Holder represents and warrants as of the date hereof and as of the closing to the
Company as follows: 
 a. Authorization; Enforcement. The Holder has the requisite corporate power and authority to enter into
and to consummate the transactions contemplated by this Agreement and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of this Agreement by the Holder and the consummation by it of the transactions
contemplated hereby and thereby have been duly authorized by all necessary action on the part of the Holder and no further action is required by the Holder. This Agreement has been (or upon delivery will have been) duly executed by the Holder
and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Holder enforceable against the Holder in accordance with its terms, except: (i) as limited by general equitable principles and
applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance,
injunctive relief or other equitable remedies and (iii) insofar as indemnification and contribution provisions may be limited by applicable law. 

b. Tax Advisors. The Holder has reviewed with its own tax advisors the U.S. federal, state, local and foreign tax consequences of this
investment and the transactions contemplated by this Agreement. With respect to such matters, the Holder relies solely on such advisors and not on any statements or representations of the Company or any of its agents, written or oral. The Holder
understands that it (and not the Company) shall be responsible for its own tax liability that may arise as a result of this investment or the transactions contemplated by this Agreement. 

c. Information Regarding Holder. Holder is an “accredited investor”, as such term is defined in Rule 501 of Regulation D
promulgated by the United States Securities and Exchange Commission (the “Commission”) under the Securities Act, is experienced in investments and business matters, has made investments of a speculative nature and has purchased securities
of companies in private placements in the past and, with its representatives, has such knowledge and experience in financial, tax and other business matters as to enable the Holder to utilize the information made available by the Company to evaluate
the merits and risks of and to make an informed investment decision with respect to the proposed purchase, which represents a speculative investment. 

  
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Holder has the authority and is duly and legally qualified to purchase and own the Securities. Holder is able to bear the risk of such investment for an indefinite period and to afford a complete
loss thereof. 
 d. Legend. The Holder understands that the Securities have been issued (or will be issued in the case of the
Conversion Shares) pursuant to an exemption from registration or qualification under the Securities Act and applicable state securities laws, and except as set forth below, the Securities shall bear any legend as required by the “blue sky”
laws of any state and a restrictive legend in substantially the following form (and a stop-transfer order may be placed against transfer of such stock certificates): 

[NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE
HAVE BEEN][THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN] REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED
(I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) AN OPINION OF COUNSEL TO THE HOLDER (IF REQUESTED BY THE COMPANY), IN A FORM REASONABLY ACCEPTABLE
TO THE COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR (II) UNLESS SOLD OR ELIGIBLE TO BE SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE
MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES. 
 e. Removal of Legends. Certificates evidencing
Securities shall not be required to contain the legend set forth in Section 4(d) above or any other legend (i) while a registration statement covering the resale of such Securities is effective under the Securities Act, (ii) following
any sale of such Securities pursuant to Rule 144 (assuming the transferor is not an affiliate of the Company), (iii) if such Securities are eligible to be sold, assigned or transferred under Rule 144 and the Subscriber is not an affiliate of
the Company (provided that the Holder provides the Company with reasonable assurances that such Securities are eligible for sale, assignment or transfer under Rule 144 which shall not include an opinion of the Holder’s counsel), (iv) in
connection with a sale, assignment or other transfer (other than under Rule 144), provided that the Holder provides the Company with an opinion of counsel to the Holder, in a generally acceptable form, to the effect that such sale, assignment or
transfer of the Securities may be made without registration under the applicable requirements of the Securities Act or (v) if such legend is not required under applicable requirements of the Securities Act (including, without limitation,
controlling judicial interpretations and pronouncements issued by the SEC). If a legend is not required pursuant to the foregoing, the Company shall no later than three (3) business days following the delivery by the Holder to the Company or
the transfer agent (with notice to the Company) of a legended certificate representing such Securities (endorsed or with stock powers attached, signatures guaranteed, and otherwise in form necessary to affect the reissuance and/or transfer, if
applicable), together with any other deliveries from the Holder as may be required above in this Section 4(e), as directed by the Holder, either: (A) provided that the Company’s transfer agent is participating in the DTC Fast
Automated Securities Transfer Program and such Securities are Shares or Conversion Shares, credit the aggregate number of shares of Common Stock to which the Holder shall be entitled to the Holder’s or its designee’s balance account with
DTC through its Deposit/Withdrawal at Custodian system or (B) if the Company’s transfer agent is not participating in the DTC Fast Automated Securities Transfer Program, issue and deliver (via reputable overnight courier) to the Holder, a
certificate representing such Securities that is free from all restrictive and other legends, registered in the name of the Holder or its designee. The Company shall be responsible for any transfer agent fees or DTC fees with respect to any issuance
of Securities or the removal of any legends with respect to any Securities in accordance herewith, including, but not limited to, fees for the opinions of counsel rendered to the transfer agent in connection with the removal of any legends. 

f. Restricted Securities. The Holder understands that: (i) the Securities have not been and are not being registered under the
Securities Act or any state securities laws, and may not be offered for sale, sold, assigned or transferred unless (A) subsequently registered thereunder, (B) the Holder shall have delivered to the

  
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Company (if requested by the Company) an opinion of counsel to the Holder, in a form reasonably acceptable to the Company, to the effect that such Securities to be sold, assigned or transferred
may be sold, assigned or transferred pursuant to an exemption from such registration, or (C) the Holder provides the Company with reasonable assurance that such Securities can be sold, assigned or transferred pursuant to Rule 144 or Rule 144A
promulgated under the Securities Act (or a successor rule thereto) (collectively, “Rule 144”); (ii) any sale of the Securities made in reliance on Rule 144 may be made only in accordance with the terms of Rule 144, and further, if
Rule 144 is not applicable, any resale of the Securities under circumstances in which the seller (or the Person through whom the sale is made) may be deemed to be an underwriter (as that term is defined in the Securities Act) may require compliance
with some other exemption under the Securities Act or the rules and regulations of the SEC promulgated thereunder; and (iii) neither the Company nor any other Person is under any obligation to register the Securities under the Securities Act or
any state securities laws or to comply with the terms and conditions of any exemption thereunder. 
 5. Representations and Warranties of
the Company. The Company hereby makes the following representations and warranties to the Holder: 
 a. Authorization;
Enforcement. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by this Agreement and each of the other agreements entered into by the parties hereto in connection with
the transactions contemplated by this Agreement (collectively, the “Exchange Documents”) and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of this Agreement by the Company and the
consummation by it of the transactions contemplated hereby and thereby have been duly authorized by all necessary action on the part of the Company and no further action is required by the Company, the Board of Directors of the Company or the
Company’s stockholders in connection therewith, including, without limitation, the issuance of the Shares or Preferred Shares, as the case may be, and the reservation for issuance and issuance of Conversion Shares issuable upon conversion of
the Preferred Shares have been duly authorized by the Company’s Board of Directors and no further filing, consent, or authorization is required by the Company, its Board of Directors or its stockholders. This Agreement and any Other
Agreement (as defined herein) have been (or upon delivery will have been) duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the
Company in accordance with its terms, except: (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights
generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as indemnification and contribution provisions may be limited by applicable law. 

b. Organization and Qualification. Each of the Company and its subsidiaries (the “Subsidiaries”) are entities duly organized
and validly existing and in good standing under the laws of the jurisdiction in which they are formed, and have the requisite power and authorization to own their properties and to carry on their business as now being conducted and as presently
proposed to be conducted. Each of the Company and each of its Subsidiaries is duly qualified as a foreign entity to do business and is in good standing in every jurisdiction in which its ownership of property or the nature of the business conducted
by it makes such qualification necessary, except to the extent that the failure to be so qualified or be in good standing would not have a Material Adverse Effect. As used in this Agreement, “Material Adverse Effect” means any material
adverse effect on (i) the business, properties, assets, liabilities, operations (including results thereof), condition (financial or otherwise) or prospects of the Company or any Subsidiary, individually or taken as a whole, (ii) the
transactions contemplated hereby or in any of the other Exchange Documents or (iii) the authority or ability of the Company to perform any of its obligations under any of the Exchange Documents. Other than its Subsidiaries, there is no Person
(as defined below) in which the Company, directly or indirectly, owns capital stock or holds an equity or similar interest. “Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust,
an unincorporated organization, any other entity and any governmental entity or any department or agency thereof. 
 c. No Conflict.
The execution, delivery and performance of the Exchange Documents by the Company and the consummation by the Company of the transactions contemplated hereby and thereby (including, without limitation, the issuance of the Shares and the Preferred
Shares and reservation for issuance and issuance of the Conversion Shares) will not (i) (i) result in a violation of the Certificate of Incorporation (as defined below) or other organizational documents of the Company or any of its
Subsidiaries, any capital stock of the 

  
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Company or any of its Subsidiaries or Bylaws (as defined below) of the Company or any of its Subsidiaries, (ii) conflict with, or constitute a default (or an event which with notice or lapse
of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of, any agreement, indenture or instrument to which the Company or any of its Subsidiaries is a party, or
(iii) result in a violation of any law, rule, regulation, order, judgment or decree (including foreign, federal and state securities laws and regulations and the rules and regulations of the OTC Markets (the “Principal Market”)
applicable to the Company or any of its Subsidiaries or by which any property or asset of the Company or any of its Subsidiaries is bound or affected except, in the case of clause (ii) or (iii) above, to the extent such violations that
could not reasonably be expected to have a Material Adverse Effect. 
 d. No Consents. Neither the Company nor any Subsidiary is
required to obtain any consent from, authorization or order of, or make any filing or registration with, any court, governmental agency or any regulatory or self-regulatory agency or any other Person in order for it to execute, deliver or perform
any of its respective obligations under or contemplated by the Exchange Documents, in each case, in accordance with the terms hereof or thereof. All consents, authorizations, orders, filings and registrations which the Company or any Subsidiary is
required to obtain pursuant to the preceding sentence have been obtained or effected on or prior to the date of this Agreement, and neither the Company nor any of its Subsidiaries is aware of any facts or circumstances which might prevent the
Company or any of its Subsidiaries from obtaining or effecting any of the registration, application or filings contemplated by the Exchange Documents. The Company is not in violation of the requirements of the Principal Market and has no knowledge
of any facts or circumstances which could reasonably lead to delisting or suspension of the Common Stock in the foreseeable future. 
 e.
Securities Law Exemptions. Assuming the accuracy of the representations and warranties of the Holder contained herein, the offer and issuance by the Company of the Securities is exempt from registration under the Securities Act. The offer and
issuance of the Securities is exempt from registration under the Securities Act pursuant to the exemption provided by Section 3(a)(9) thereof. The Company covenants and represents to the Holder that neither the Company nor any of its
Subsidiaries has received, anticipates receiving, has any agreement to receive or has been given any promise to receive any consideration from the Holder or any other Person in connection with the transactions contemplated by the Exchange Documents.

 f. Issuance of Securities. The issuance of the Shares and the Preferred Shares are duly authorized and upon issuance in accordance
with the terms of the Exchange Documents shall be validly issued, fully paid and non-assessable and free from all taxes, liens, charges and other encumbrances with respect to the issue thereof. Upon issuance or conversion in accordance with the
Certificate of Designations, the Conversion Shares, when issued, will be validly issued, fully paid and nonassessable and free from all preemptive or similar rights, taxes, liens, charges and other encumbrances with respect to the issue thereof,
with the holders being entitled to all rights accorded to a holder of Common Stock. 
 g. Transfer Taxes. As of the date of this
Agreement, all share transfer or other taxes (other than income or similar taxes) which are required to be paid in connection with the issuance of the Shares and the Preferred Shares to be exchanged with the Holder hereunder will be, or will have
been, fully paid or provided for by the Company, and all laws imposing such taxes will be or will have been complied with. 
 h. Equity
Capitalization. Except as disclosed on Schedule 5(h): (i) none of the Company’s or any Subsidiary’s capital stock is subject to preemptive rights or any other similar rights or any liens or encumbrances suffered or
permitted by the Company or any Subsidiary; (ii) there are no outstanding options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, or exercisable
or exchangeable for, any capital stock of the Company or any of its Subsidiaries, or contracts, commitments, understandings or arrangements by which the Company or any of its Subsidiaries is or may become bound to issue additional capital stock of
the Company or any of its Subsidiaries or options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, or exercisable or exchangeable for, any capital stock
of the Company or any of its Subsidiaries; (iii) there are no outstanding debt securities, notes, credit agreements, credit facilities or other agreements, documents or instruments evidencing indebtedness of the Company or any of its
Subsidiaries or by 

  
 5 

 
which the Company or any of its Subsidiaries is or may become bound; (iv) there are no financing statements securing obligations in any amounts filed in connection with the Company or any of
its Subsidiaries; (v) there are no agreements or arrangements under which the Company or any of its Subsidiaries is obligated to register the sale of any of their securities under the Securities Act; (vi) there are no outstanding
securities or instruments of the Company or any of its Subsidiaries which contain any redemption or similar provisions, and there are no contracts, commitments, understandings or arrangements by which the Company or any of its Subsidiaries is or may
become bound to redeem a security of the Company or any of its Subsidiaries; (vii) there are no securities or instruments containing anti-dilution or similar provisions that will be triggered by the issuance of the Securities;
(viii) neither the Company nor any Subsidiary has any stock appreciation rights or “phantom stock” plans or agreements or any similar plan or agreement; and (ix) neither the Company nor any of its Subsidiaries have any
liabilities or obligations required to be disclosed in the in the Company’s filings with the SEC (the “SEC Documents”) which are not so disclosed in the SEC Documents, other than those incurred in the ordinary course of the
Company’s or its Subsidiaries’ respective businesses and which, individually or in the aggregate, do not or could not have a Material Adverse Effect. The Company has furnished to the Holder true, correct and complete copies of the
Company’s Certificate of Incorporation, as amended and as in effect on the date hereof (the “Certificate of Incorporation”), and the Company’s bylaws, as amended and as in effect on the date hereof (the “Bylaws”), and
the terms of all securities convertible into, or exercisable or exchangeable for, shares of Common Stock and the material rights of the holders thereof in respect thereto that have not been disclosed in the SEC Documents. 

(i) Shell Company Status. The Company is not and has never been an issuer identified in Rule 144(i)(1) of the Securities Act. The
Company is, and has been for a period of at least 90 days, subject to the reporting requirements of Section 13 or Section 15(d) of the Exchange Act. 

6. Additional Acknowledgments. The Holder and the Company confirm that the Company has not received any consideration for the
transactions contemplated by this Agreement. Pursuant to Rule 144 promulgated by the Commission pursuant to the Securities Act and the rules and regulations promulgated thereunder as such Rule 144 may be amended from time to time, or any similar
rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule 144, the holding period of the Shares and the Preferred Shares (including the Conversion Shares upon conversion of the Preferred Shares) tacks
back to July 8, 2014, the issue date of the Exchange Securities. The Company agrees not to take a position contrary to this paragraph. 

7. Release by the Holder; Termination of Purchase Agreement; Waiver of Registration Rights. 

a. In consideration of the foregoing, Holder releases and discharges Company, Company’s officers, directors, principals, control persons,
past and present employees, insurers, successors, and assigns (“Company Parties”) from all actions, cause of action, suits, debts, dues, sums of money, accounts, reckonings, bonds, bills, specialties, covenants, contracts, controversies,
agreements, promises, variances, trespasses, damages, judgments, extents, executions, claims, and demands whatsoever, in law, admiralty or equity, which against Company Parties ever had, now have or hereafter can, shall or may, have for, upon, or by
reason of any matter, cause or thing whatsoever, whether or not known or unknown, arising under the Exchange Securities and/or the Purchase Agreement. It being understood that this Section shall be limited in all respects to only matters
arising under or related to the Exchange Securities and the Purchase Agreement and shall under no circumstances constitute a release, waiver or discharge with respect to the Securities or any Exchange Documents or limit the Holder from taking action
for matters with respect to the Securities, any Exchange Document or events that may arise in the future. 
 b. As further consideration of
the foregoing, Holder and the Company hereby acknowledge and agree that the Purchase Agreement, and all rights, covenants, agreements and obligations contained therein, is hereby terminated and of no further force or effect. The Holder and the
Company hereby agree and confirm that the Holder’s agreement to terminate the Company’s obligations under the Purchase Agreement shall constitute an agreement to terminate pursuant to Section 9(e) of the Purchase Agreement and, upon
the Company independently obtaining similar agreements from such Other Holders as would constitute the requisite “Required Holders” (as defined in the Purchase Agreement), such termination shall be considered a termination of the Purchas
Agreement with respect to all parties thereto. 
 c. As further consideration of the foregoing, Holder hereby waives, only on behalf of
itself 

  
 6 

 
its rights under that certain Registration Rights Agreement, dated as of February 12, 2014, by and between the Private Company and the Holder, as amended from time to time, and which was
assumed by the Company in connection with the Merger [and assigned by the Original Investor to the Holder] (the “Registration Rights Agreement”), restricting the Company’s ability to grant additional registration rights to Holder or
any other person or entity, providing the parties thereto with any notice relating to the filing of any additional registration statements by the Company and requiring that the Company include any Registrable Securities (as defined therein) in any
future registration statement filed by the Company. The Holder and the Company hereby agree and confirm that the Holder’s agreement to waive the Company’s obligations under the Registration Rights Agreement shall constitute a waiver
pursuant to Section 10 of the Registration Rights Agreement and, upon the Company independently obtaining similar waivers from such Other Holders as would constitute the requisite “Required Holders” (as defined in the Registration
Rights Agreement), such waiver shall be considered a waiver of the Company’s obligations under the Registration Rights Agreement with respect to all parties thereto. 

8. Miscellaneous. 
 a.
[Limitations on Issuances and Financings. (i) For a period beginning on the Effective Date and ending on such date that the Holder no longer holds any Securities (the “Prohibited Period”), the Company shall not
issue any Common Stock or securities convertible into or exercisable for shares of Common Stock (or modify any of the foregoing which may be outstanding) to any person or entity or incur any financing debt, other than with respect to an Excepted
Issuance. For purposes hereof, “Excepted Issuance” shall be defined as (i) the issuance of shares of Common Stock or options to purchase Common Stock issued to directors, officers or employees of the Company pursuant to any Approved
Stock Plan, provided that (A) all such issuances (taking into account the shares of Common Stock issuable upon exercise of such options) during the Prohibited Period pursuant to this clause (i) do not, in the aggregate, exceed more than
7,116,204 shares of Common Stock, in the aggregate (including options) (as adjusted for stock splits, combinations and similar transactions) and (B) the exercise price of any such options is not lowered after issuance by subsequent amendment
thereof, none of such options are amended subsequent to issuance to increase the number of shares issuable thereunder and none of the terms or conditions of any such options are subsequent to issuance otherwise materially changed in any manner that
adversely affects the undersigned and (ii) the issuance of shares of Common Stock issued upon the conversion or exercise of Convertible Securities or contractual agreements (other than options to purchase Common Stock or other equity incentive
awards issued pursuant to an Approved Stock Plan that are covered by clause (i) above) issued prior to the date hereof, provided that the conversion price of any such Convertible Securities (other than options to purchase Common Stock issued
pursuant to an Approved Stock Plan that are covered by clause (i) above) is not lowered by subsequent amendment, none of such Convertible Securities (other than standard options to purchase Common Stock issued pursuant to an Approved Stock Plan
that are covered by clause (i) above) are subsequently amended to increase the number of shares issuable thereunder and none of the terms or conditions of any such Convertible Securities (other than options to purchase Common Stock issued
pursuant to an Approved Stock Plan that are covered by clause (i) above) are otherwise materially changed in any manner that adversely affects the undersigned; “Approved Stock Plan” shall mean any employee benefit plan which
has been approved by the board of directors of the Company on or prior to the date hereof pursuant to which shares of Common Stock and standard options to purchase Common Stock may be issued to any employee, officer or director for services provided
to the Company in their capacity as such (including, without limitation, any adjustments to the number of shares reserved for issuance thereunder as a result of the operation of any evergreen provisions), “Convertible Securities”
shall mean any stock or other security (other than Options) that is at any time and under any circumstances, directly or indirectly, convertible into, exercisable or exchangeable for, or which otherwise entitles the holder thereof to acquire, any
shares of Common Stock, and “Options” shall mean any rights, warrants or options to subscribe for or purchase shares of Common Stock or Convertible Securities. 

(ii) Additionally, during the Prohibited Period, the Company will not :(A) enter into any Equity Line of Credit or similar agreement, nor
issue nor agree to issue any Common Stock, Common Stock Equivalents, floating or Variable Priced Equity Linked Instruments nor any of the foregoing or equity with price reset rights (subject to adjustment for stock splits, distributions, dividends,
recapitalizations and the like) (collectively, the “Variable Rate Transaction”). For purposes hereof, “Equity Line of Credit” shall include any transaction involving a written agreement between the Company and
an investor or underwriter whereby the Company has the right to “put” its securities to the investor or underwriter over an agreed period of time and at an agreed price or 

  
 7 

 
price formula, and “Variable Priced Equity Linked Instruments” shall include: (A) any debt or equity securities which are convertible into, exercisable or exchangeable for,
or carry the right to receive additional shares of Common Stock either (1) at any conversion, exercise or exchange rate or other price that is based upon and/or varies with the trading prices of or quotations for Common Stock at any time after
the initial issuance of such debt or equity security, or (2) with a fixed conversion, exercise or exchange price that is subject to being reset at some future date at any time after the initial issuance of such debt or equity security due to a
change in the market price of the Company’s Common Stock since date of initial issuance, and (B) any amortizing convertible security which amortizes prior to its maturity date, where the Company is required or has the option to (or any
investor in such transaction has the option to require the Company to) make such amortization payments in shares of Common Stock which are valued at a price that is based upon and/or varies with the trading prices of or quotations for Common Stock
at any time after the initial issuance of such debt or equity security (whether or not such payments in stock are subject to certain equity conditions) and (C) issue any equity or equity-linked convertible securities. “Common Stock
Equivalents” means any securities of the Company or its subsidiaries which would entitle the holder thereof to acquire at any time Common Stock, including, without limitation, any debt, preferred stock, right, option, warrant or other
instrument that is at any time convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock.] 

b. Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties and their respective successors
and assigns. 
 c. Governing Law; Jurisdiction; Waiver of Jury Trial. This Agreement shall be governed by and construed under the
laws of the State of New York without regard to the choice of law principles thereof. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the State of New York located in The City of New
York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or therewith or with any transaction contemplated hereby or thereby, and hereby irrevocably waives any objection that such suit, action or proceeding
is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. EACH PARTY HEREBY
IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

d. Severability. If any provision of this Agreement shall be invalid or unenforceable in any jurisdiction, such invalidity or
unenforceability shall not affect the validity or enforceability of the remainder of this Agreement in that jurisdiction or the validity or enforceability of any provision of this Agreement in any other jurisdiction. 

e. Counterparts/Execution. This Agreement may be executed in two or more identical counterparts, all of which shall be considered one
and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party. In the event that any signature is delivered by facsimile transmission or by an e-mail which contains an electronic
file of an executed signature page, such signature page shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such facsimile or electronic file
signature page (as the case may be) were an original thereof. 
 f. Notices. Any notice or communication permitted or required
hereunder shall be in writing and shall be deemed sufficiently given if hand-delivered or sent (i) postage prepaid by registered mail, return receipt requested, or (ii) by facsimile, to the respective parties as set forth below, or to such
other address as either party may notify the other in writing. 
  

			
	If to the Company, to:		MabVax Therapeutics Holdings, Inc.
			11588 Sorrento Valley Road, Ste. 20
			San Diego, CA 92121
			Attention: Chief Executive Officer

  
 8 

			
	
	If to Holder, to the address set forth on the signature page of the Holder

 g. Expenses. The parties hereto shall pay their own costs and expenses in connection herewith. 

h. Entire Agreement; Amendments. This Agreement constitutes the entire agreement between the parties with regard to the subject matter
hereof and thereof, superseding all prior agreements or understandings, whether written or oral, between or among the parties. This Agreement may be amended, modified, superseded, cancelled, renewed or extended, and the terms and conditions hereof
may be waived, only by a written instrument signed by all parties, or, in the case of a waiver, by the party waiving compliance. Except as expressly stated herein, no delay on the part of any party in exercising any right, power or privilege
hereunder shall operate as a waiver thereof, nor shall any waiver on the part of any party of any right, power or privilege hereunder preclude any other or future exercise of any other right, power or privilege hereunder. 

i. Headings. The headings used in this Agreement are used for convenience only and are not to be considered in construing or
interpreting this Agreement. 
 i. Independent Nature of the Holder’s Obligations and Rights. The obligations of the Holder
under the Exchange Documents are several and not joint with the obligations of any other holder of Series A-1 Preferred Stock and/or Series A-1 Warrants (each, an “Other Holder”) under any other agreement to exchange Series A-1 Preferred
Stock and/or Series A-1 Warrants (each, an “Other Agreement”), and the Holder shall not be responsible in any way for the performance of the obligations of any Other Holders under any Other Agreement. Nothing contained herein or in any
Other Agreement, and no action taken by the Holder pursuant hereto or any Other Holder pursuant to any Other Agreement, shall be deemed to constitute the Holder or any Other Holder as, and the Company acknowledges that the Holder and the Other
Holders do not so constitute, a partnership, an association, a joint venture or any other kind of group or entity, or create a presumption that the Holder and any Other Holder are in any way acting in concert or as a group or entity with respect to
such obligations or the transactions contemplated by the Exchange Documents, any other agreement or any matters, and the Company acknowledges that the Holder and the Other Holders are not acting in concert or as a group or entity, and the Company
shall not assert any such claim, with respect to such obligations or the transactions contemplated by the Exchange Documents and any Other Agreement. The decision of the Holder to acquire the Securities pursuant to the Exchange Documents has been
made by the Holder independently of any Other Holder. The Holder acknowledges that no Other Holder has acted as agent for the Holder in connection with the Holder making its acquisition hereunder and that no Other Holder will be acting as agent of
the Holder in connection with monitoring the Holder’s Securities or enforcing its rights under the Exchange Documents. The Company and the Holder confirm that the Holder has independently participated with the Company in the negotiation of the
transaction contemplated hereby with the advice of its own counsel and advisors. The Holder shall be entitled to independently protect and enforce its rights, including, without limitation, the rights arising out of this Agreement or out of any of
the Other Agreements, and it shall not be necessary for any Other Holder to be joined as an additional party in any proceeding for such purpose. To the extent that any of the Other Holders and the Company enter into the same or similar documents,
all such matters are solely in the control of the Company, not the action or decision of the Holder, and would be solely for the convenience of the Company and not because it was required or requested to do so by the Holder or any Other Holder. For
clarification purposes only and without implication that the contrary would otherwise be true, the transactions contemplated by the Exchange Documents include only the transaction between the Company and the Holder and do not include any other
transaction between the Company and any Other Holder. 
 j. Most Favored Nation. The Company hereby represents and warrants as of the
date hereof and covenants and agrees from and after the date hereof that none of the terms offered to any Other Holder in any Other Agreement, is or will be more favorable to such Other Holder than those of the Holder and this Agreement. If, and
whenever on or after the date hereof, the Company desires to enter into an Other Agreement, then (i) the Company shall provide prior written notice thereof to the Holder and (ii) upon execution by the

  
 9 

 
Company and such Other Holder of such Other Agreement, the terms and conditions of this Agreement, the Other Agreement and the Securities (other than any limitations on conversion set forth
therein) shall be, without any further action by the Holder or the Company, automatically amended and modified in an economically and legally equivalent manner such that the Holder shall receive the benefit of the more favorable terms and/or
conditions (as the case may be) set forth in such Other Agreement, provided that upon written notice to the Company at any time the Holder may elect not to accept the benefit of any such amended or modified term or condition, in which event the term
or condition contained in this Agreement or the Securities (as the case may be) shall apply to the Holder as it was in effect immediately prior to such amendment or modification as if such amendment or modification never occurred with respect to the
Holder. 
 k. Reporting Status. Until the date on which none of the Securities are outstanding, the Company shall timely file all
reports required to be filed with the SEC pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Company shall continue to timely file reports under the Exchange Act even if the Exchange Act or the rules
and regulations thereunder would otherwise no longer require or permit such filings. 
 l. Listing. The Company shall use reasonable
best efforts to promptly secure the listing or designation for quotation (as the case may be) of all of the Shares and the Conversion Shares upon each national securities exchange and automated quotation system, if any, upon which the Common Stock
is then listed or designated for quotation (as the case may be) (subject to official notice of issuance) (but in no event later than the date of this Agreement) and shall use reasonable best efforts to maintain such listing or designation for
quotation (as the case may be) of all Shares and Conversion Shares from time to time issuable under the terms of this Agreement on such national securities exchange or automated quotation system. The Company shall maintain the Common Stock’s
listing or authorization for quotation (as the case may be) on the Principal Market, The New York Stock Exchange, the NYSE MKT, the Nasdaq Capital Market, the Nasdaq Global Market or the Nasdaq Global Select Market (each, an “Eligible
Market”). Neither the Company nor any of its Subsidiaries shall take any action which could be reasonably expected to result in the delisting or suspension of the Common Stock on an Eligible Market. The Company shall pay all fees and expenses
in connection with satisfying its obligations under this Section 8(l). 
 m. Pledge of Securities. The Company acknowledges and
agrees that the Securities may be pledged by the Holder in connection with a bona fide margin agreement or other loan or financing arrangement that is secured by the Securities. The pledge of Securities shall not be deemed to be a transfer, sale or
assignment of the Securities hereunder, and if the Holder effects a pledge of Securities it shall not be required to provide the Company with any notice thereof or otherwise make any delivery to the Company pursuant to this Agreement or any Other
Agreement. The Company hereby agrees to execute and deliver such documentation as a pledgee of the Securities may reasonably request in connection with a pledge of the Securities to such pledgee by the Holder. 

(Signature Pages Follow) 

  
 10 

 IN WITNESS WHEREOF, the parties have caused this Agreement to be duly executed as of the day and
year first above written. 
  

			
	MABVAX THERAEPUETICS HOLDINGS, INC.
		
	By:		  

			
			Name:
			Title:
	
	HOLDER: [                    ]
		
	By:		  

Election to Received Preferred Stock: (check here)              

Election for Beneficial Ownership Limitation of the Series D Preferred Stock to immediately be 2.49%
             
  

			
	
	Address for Notices:
	  

	  

	  

	  

	
	Address for delivery of Securities:
	  

	  

	  

	  

 SCHEDULE A 
  

									
	 Name and Address

of Holder
	  	Number of
Shares of Series
A-1 Preferred
Stock to be
Exchange	  	Number of Series
A-1 Warrants to
be Exchanged	  	Number of Shares
of Common Stock
to be Issued	  	Number of Shares
of Series D
Preferred Stock to
be Issued

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