Document:

Exhibit 10.11

   

   

  October 9, 2015

   

  Federico Monzon, MD

   

  Dear Federico:

   

  I am pleased to offer you a position with Castle Biosciences, Inc. (the “Company”), as Chief Medical Officer. In this position, you will report
    to Derek Maetzold. If you decide to join us, you will receive an annualized base salary at a rate of $300,000.00 per annum, which will be paid semi-monthly in accordance with the Company’s normal payroll procedures. You will also be eligible for an
    annual bonus with a target payout of 35% of your base salary which will be prorated. As an employee, you will also be eligible to receive certain employee benefits including (i) Healthcare Savings Account (HSA) based medical and dental plan, (ii)
    401(k) plan, and (iii) three weeks paid vacation. You should note that the Company may modify job titles, reporting structure, salaries, bonus and benefits from time to time as it deems necessary.

   

  You will also be provided with a $30,000.00 signing bonus payable in the first paycheck cycle following your date of hire. Should your
    employment be terminated by your resignation from the Company within 1 year of your start date, then you agree to repay the Company this $30,000.00 signing bonus. Should your employment be terminated by your resignation from the Company after 1 year of
    your start date but before 2 years of your start date, then you agree to repay the Company $15,000.00. No repayment will be required if you resign after 2 years from your start date or if your position is eliminated by the Company.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit

      A hereto), you will be entitled to continuation of your annual base salary (less applicable withholding) for four (4) months following the date of your termination; provided, however that: (i) such payment is net of any amounts earned by you
    through full time, part time or consulting arrangements with the Company following your termination; and (ii) you are not otherwise in material breach of this Agreement, your Employee Proprietary Information Agreement, or any other agreement executed
    in connection with employment termination you have with the Company. You will also be entitled to continue benefits under COBRA during this period. Salary continuation will be paid in accordance with the Company’s normal payroll procedures and less any
    applicable withholdings.

   

  The receipt of any salary continuation and Option vesting acceleration pursuant to this letter agreement or any Option agreement will be subject
    to you: (i) signing and not revoking a release of claims with the Company (in a form reasonably acceptable to the Company) and provided that such release of claims becomes effective and revocable no later than sixty (60) days following the date of your
    termination of employment with the Company, and (ii) complying in full with the provisions of this letter agreement and your Employee Proprietary Information Agreement.

   

  
    
      
 

  

   

  In addition, if you decide to join the Company, it will be recommended at the first meeting of the Company’s Board of Directors following your
    first day of employment that the Company grant you an option to purchase 100,000 shares of the Company’s Common Stock at a price per share equal to the fair market value per share of the Common Stock on the date of grant, as determined by the Company’s
    Board of Directors. As we have discussed, the Company is in a multi-closing Series F financing round. The outstanding shares following the initial closing in July 2015 was 9,454,632.

   

  Twenty-five percent (25%) of the shares subject to the option shall vest twelve (12) months after the date your vesting begins, subject to your
    continuing employment with the Company, and no shares shall vest before such date. The remaining shares shall vest monthly over the next thirty-six (36) months in equal monthly amounts subject to your continuing employment with the Company. This option
    grant shall be subject to the terms and conditions of the Company’s Stock Plan and Stock Option Agreement, including vesting requirements. No right to any stock is earned or accrued until such time that vesting occurs, nor does the grant confer any
    right to continue vesting or employment.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit

      A hereto), in either case before a Change of Control (as defined in Exhibit A hereto) of the Company, your Option’s vesting schedule will accelerate by twenty-four (24) months.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit

      A hereto), in either case within six (6) months following a Change of Control (as defined in Exhibit A hereto) of the Company (i) your Option will automatically become fully vested and exercisable as to all of the shares subject to the
    Option, and (ii) you will be entitled to continuation of your annual base salary (less applicable withholding) for twelve (12) months following the date of your termination; provided, however that: (i) such payment is net of any amounts earned by you
    through full time, part time or consulting arrangements with the Company following your termination; and (ii) you are not otherwise in material breach of this Agreement, the Employee Proprietary Information Agreement, or any other agreement executed in
    connection with employment termination you have with the Company. You will also be entitled to continue benefits under COBRA during this period. Salary continuation will be paid in accordance with the Company’s normal payroll procedures and less any
    applicable withholdings.

   

  The Company reserves the right to conduct background investigations and/or reference checks on all of its potential employees. Your job offer,
    therefore, is contingent upon a clearance of such a background investigation and/or reference check, if any.

   

  You should be aware that your employment with the Company is for no specified period and constitutes at-will employment. As a result, you are
    free to resign at any time, for any reason or for no reason. Similarly, the Company is free to conclude its employment relationship with you at any time, with or without cause, and with or without notice. We request that, in the event of resignation,
    you give the Company at least four (4) weeks' notice.

   

  
    
      
 

  

   

  For purposes of federal immigration law, you will be required to provide to the Company documentary evidence of your identity and eligibility
    for employment in the United States. Such documentation must be provided to us within three (3) business days of your date of hire, or our employment relationship with you may be terminated.

   

  We also ask that, if you have not already done so, you disclose to the Company any and all agreements relating to your prior employment that may
    affect your eligibility to be employed by the Company or limit the manner in which you may be employed. It is the Company’s understanding that any such agreements will not prevent you from performing the duties of your position and you represent that
    such is the case. Moreover, you agree that, during the term of your employment with the Company, you will not engage in any other employment, occupation, consulting or other business activity directly related to the business in which the Company is now
    involved or becomes involved during the term of your employment, nor will you engage in any other activities that conflict with your obligations to the Company without the express written agreement of the President and CEO. Similarly, you agree not to
    bring any third party confidential information to the Company, including that of your former employer, and that in performing your duties for the Company you will not in any way utilize any such information.

   

  As a Company employee, you will be expected to abide by the Company’s rules, policies, procedures and standards. You may be required to sign an
    acknowledgment that you have read and that you understand the Company’s rules of conduct, which the Company will soon complete and distribute.

   

  As a condition of your employment, you are also required to sign and comply with an Employee Proprietary Information Agreement (EPIA) which
    requires, among other provisions, the assignment of patent rights to any invention made during your employment at the Company, non-solicitation of Company employees, certain prohibitions on competition with the Company, and non-disclosure of Company
    proprietary information.

   

  To accept the Company’s offer, please sign and date this letter in the space provided below and return this letter to the Company, no later than
    October 10, 2015. Please print and store a copy of this offer letter and the EPIA agreement for your records. If you accept our offer, your first day of employment will be November 1, 2015, or such other date as we may mutually agree in writing. This
    letter, along with any agreements relating to proprietary rights between you and the Company, sets forth the terms of your employment with the Company and supersedes any prior representations or agreements including, but not limited to, any
    representations made during your recruitment, interviews or pre-employment negotiations, whether written or oral. This letter, including, but not limited to, its at-will employment provision, may not be modified or amended except by a written agreement
    signed by the President of the Company and you.

   

  This offer of employment will terminate if it is not accepted, signed and returned by October 10, 2015.

   

  

  [Remainder of this page intentionally left blank] 

   

  
    
      
 

  

    

  

  We look forward to your favorable reply and to working with you at Castle Biosciences, Inc.

   

  
    	 	Sincerely,
	 	 	 
	 	 	 
	 	/s/ Derek Maetzold
	 	Derek Maetzold,
	 	President and Chief Executive Officer

  

    

  	Agreed to and accepted:	 
	 	 
	Signature:	
          /s/ Federico A. Monzon 

        	 
	 	 	 
	Printed Name: 	
          Federico A. Monzon 

        	 
	 	 
	Date:	
          10/9/2015 

        	 

       

  Enclosures:

  Duplicate Original Letter

  Employee Proprietary Information Agreement

   

  
    
      
 

  

   

  EXHIBIT A

   

  Definitions

   

  Cause. For purposes of this letter agreement, “Cause” shall mean: (i) your continued failure to substantially perform the material
    duties and obligations of your position with the Company, which failure is not cured within sixty (60) days after receipt of written notice from the Company of such failure; (ii) your failure or refusal to comply with reasonable written policies,
    standards and regulations established by the Company from time to time which failure is not cured within sixty (60) days after receipt of written notice of such failure from the Company; (iii) any material act of fraud, embezzlement, or other unlawful
    act committed by you that is at the expense of or harms the Company; (iv) your knowing violation of a federal or state law or regulation applicable to the Company’s business, which violation was or is reasonably likely to be materially injurious to the
    Company; (v) your material breach of the terms of your offer letter or the Employee Proprietary Information Agreement; or (vi) your conviction of, the entering of a guilty plea or plea of nolo contendere or no contest (or the equivalent) with respect
    to either a felony or a crime (other than felonies or crimes relating to motor vehicles) that materially adversely affects the Company.

   

  Change of Control. For purposes of this letter agreement, “Change of Control” shall mean: (i) the acquisition of the Company by
    another entity by means of any transaction or series of related transactions (including, without limitation, any merger, consolidation or other form of reorganization in which outstanding shares of the Company are exchanged for securities or other
    consideration issued, or caused to be issued, by the acquiring entity or its subsidiary) (each a “Merger Transaction”), unless the Company’s stockholders of record as constituted immediately prior to such Merger Transaction will, immediately
    after such Merger Transaction, hold at least a majority of the voting power of the surviving or acquiring entity in the same relative proportions, (ii) a sale of all or substantially all of the assets of the Company or the exclusive license of all or
    substantially all of the Company’s intellectual property by means of any transaction or series of related transactions, or (iii) a liquidation, dissolution or winding up of the Company.

   

  Good Reason. For purposes of this letter agreement, “Good Reason” shall mean, without employee’s written consent, and only if
    employee’s resignation occurs within thirty (30) days after the occurrence of any of the following: (i) there is a material reduction of the level of your compensation (excluding any bonuses) (except where there is a general reduction applicable to the
    members of the Company’s management team, defined as the Chief Executive Officer and all employees reporting directly to the Chief Executive Officer); (ii) there is a material reduction in your overall responsibilities or authority, or scope of duties,
    it being understood that a reduction in your responsibilities or authority following a Change of Control shall not constitute Good Reason unless there also occurs a demotion in your title or position; (iii) there is a breach of a material term of this
    letter Agreement by the Company; or (iv) without your prior written consent, a material change in the geographic location at which you must perform your services; provided, that in no instance will your relocation to a facility or a location of fifty
    (50) miles or less from your then current office location be deemed material for purposes of this Agreement.Exhibit 10.12

   

  March 2, 2016

   

  Bernhard Spiess

   

  Dear Bernhard:

   

  I am pleased to offer you a position with Castle Biosciences, Inc. (the “Company”), as Chief Operating Officer. In this position, you will
    report to Derek Maetzold. If you decide to join us, you will receive an annualized base salary at a rate of $280,000.00 per annum, which will be paid semi-monthly in accordance with the Company’s normal payroll procedures. You will also be eligible for
    an annual bonus with a target payout of 35% of your base salary which will be prorated. As an employee, you will also be eligible to receive certain employee benefits including (i) healthcare plan, (ii) 401(k) plan, and (iii) four weeks paid vacation.
    You should note that the Company may modify job titles, reporting structure, salaries, bonus and benefits from time to time as it deems necessary.

   

  You will also be provided with a moving allowance of $35,000.00 payable in the first paycheck cycle following your date of hire. Should your
    employment be terminated without cause from the Company within 1 year of your start date, then you agree to repay the Company this $35,000.00 moving allowance. Should your employment be terminated by your resignation from the Company after 1 year of
    your start date but before 2 years of your start date, then you agree to repay the Company $17,500.00. No repayment will be required if you resign after 2 years from your start date or if your position is eliminated by the Company.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit
      A hereto), you will be entitled to continuation of your annual base salary (less applicable withholding) for six (6) months following the date of your termination; provided, however that: (i) such payment is net of any amounts earned by you
    through full time, part time or consulting arrangements with the Company following your termination; and (ii) you are not otherwise in material breach of this Agreement, your Employee Proprietary Information Agreement, or any other agreement executed
    in connection with employment termination you have with the Company. You will also be entitled to continue benefits under COBRA during this period. Salary continuation will be paid in accordance with the Company’s normal payroll procedures and less any
    applicable withholdings.

   

  The receipt of any salary continuation and Option vesting acceleration pursuant to this letter agreement or any Option agreement will be subject
    to you: (i) signing and not revoking a release of claims with the Company (in a form reasonably acceptable to the Company) and provided that such release of claims becomes effective and revocable no later than sixty (60) days following the date of your
    termination of employment with the Company, and (ii) complying in full with the provisions of this letter agreement and your Employee Proprietary Information Agreement.

   

  
    
      

    

  

   

  In addition, if you decide to join the Company, it will be recommended at the first meeting of the Company’s Board of Directors following your
    first day of employment that the Company grant you an option to purchase 206,734 shares of the Company’s Common Stock at a price per share equal to the fair market value per share of the Common Stock on the date of grant, as determined by the Company’s
    Board of Directors. Outstanding shares, defined as all issued common and preferred shares (Series A through F), as of February 6, 2016 was 10,336,697.

   

  Twenty-five percent (25%) of the shares subject to the option shall vest twelve (12) months after the date your vesting begins, subject to your
    continuing employment with the Company, and no shares shall vest before such date. The remaining shares shall vest monthly over the next thirtysix (36) months in equal monthly amounts subject to your continuing employment with the Company. This option
    grant shall be subject to the terms and conditions of the Company’s Stock Plan and Stock Option Agreement, including vesting requirements. No right to any stock is earned or accrued until such time that vesting occurs, nor does the grant confer any
    right to continue vesting or employment.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit
      A hereto), in either case before a Change of Control (as defined in Exhibit A hereto) of the Company, your Option’s vesting schedule will accelerate by twenty-four (24) months.

   

  If your employment is terminated without Cause (as defined in Exhibit A hereto) or if you resign for Good Reason (as defined in Exhibit
      A hereto), in either case within six (6) months following a Change of Control (as defined in Exhibit A hereto) of the Company (i) your Option will automatically become fully vested and exercisable as to all of the shares subject to the
    Option, and (ii) you will be entitled to continuation of your annual base salary (less applicable withholding) for twelve (12) months following the date of your termination; provided, however that: (i) such payment is net of any amounts earned by you
    through full time, part time or consulting arrangements with the Company following your termination; and (ii) you are not otherwise in material breach of this Agreement, the Employee Proprietary Information Agreement, or any other agreement executed in
    connection with employment termination you have with the Company. You will also be entitled to continue benefits under COBRA during this period. Salary continuation will be paid in accordance with the Company’s normal payroll procedures and less any
    applicable withholdings.

   

  The Company reserves the right to conduct background investigations and/or reference checks on all of its potential employees. Your job offer,
    therefore, is contingent upon a clearance of such a background investigation and/or reference check, if any.

   

  You should be aware that your employment with the Company is for no specified period and constitutes at-will employment. As a result, you are
    free to resign at any time, for any reason or for no reason. Similarly, the Company is free to conclude its employment relationship with you at any time, with or without cause, and with or without notice. We request that, in the event of resignation,
    you give the Company at least four (4) weeks notice.

   

  
    
      

    

  

   

  For purposes of federal immigration law, you will be required to provide to the Company documentary evidence of your identity and eligibility
    for employment in the United States. Such documentation must be provided to us within three (3) business days of your date of hire, or our employment relationship with you may be terminated.

   

  We also ask that, if you have not already done so, you disclose to the Company any and all agreements relating to your prior employment that may
    affect your eligibility to be employed by the Company or limit the manner in which you may be employed. It is the Company’s understanding that any such agreements will not prevent you from performing the duties of your position and you represent that
    such is the case. Moreover, you agree that, during the term of your employment with the Company, you will not engage in any other employment, occupation, consulting or other business activity directly related to the business in which the Company is now
    involved or becomes involved during the term of your employment, nor will you engage in any other activities that conflict with your obligations to the Company without the express written agreement of the President and CEO. Similarly, you agree not to
    bring any third party confidential information to the Company, including that of your former employer, and that in performing your duties for the Company you will not in any way utilize any such information.

   

  As a Company employee, you will be expected to abide by the Company’s rules, policies, procedures and standards. You may be required to sign an
    acknowledgment that you have read and that you understand the Company’s rules of conduct, which the Company will soon complete and distribute.

   

  As a condition of your employment, you are also required to sign and comply with an Employee Proprietary Information Agreement (EPIA) which
    requires, among other provisions, the assignment of patent rights to any invention made during your employment at the Company, non-solicitation of Company employees, certain prohibitions on competition with the Company, and non-disclosure of Company
    proprietary information.

   

  To accept the Company’s offer, please sign and date this letter in the space provided below and return this letter to the Company, no later than
    March 20, 2016. Please print and store a copy of this offer letter and the EPIA agreement for your records. If you accept our offer, your first day of employment will be May 1, 2016, or such other date as we may mutually agree in writing. This letter,
    along with any agreements relating to proprietary rights between you and the Company, sets forth the terms of your employment with the Company and supersedes any prior representations or agreements including, but not limited to, any representations
    made during your recruitment, interviews or pre-employment negotiations, whether written or oral. This letter, including, but not limited to, its at-will employment provision, may not be modified or amended except by a written agreement signed by the
    President of the Company and you.

   

  This offer of employment will terminate if it is not accepted, signed and returned by March 20, 2016.

   

  [Remainder of this page intentionally left blank]

   

  
    
      

    

  

   

  We look forward to your favorable reply and to working with you at Castle Biosciences, Inc.

   

   

  
    	 	Sincerely,
	 	 	 
	 	/s/ Derek Maetzold
	 	Derek Maetzold,
	 	President and Chief Executive Officer

  

   

  
    	Agreed to and accepted:	 
	 	 
	Signature:	/s/ Bernhard E. Spiess	 
	 	 
	Printed Name:	Bernhard E. Spiess	 
	 	 
	Date:	March 16, 2016	 

  

  
  

  
  

   

  Enclosures:

  Duplicate Original Letter

  Employee Proprietary Information Agreement

   

  
    
      

    

  

   

  EXHIBIT A

   

  Definitions

   

  Cause. For purposes of this letter agreement, “Cause” shall mean: (i) your continued failure to substantially perform the material
    duties and obligations of your position with the Company, which failure is not cured within sixty (60) days after receipt of written notice from the Company of such failure; (ii) your failure or refusal to comply with reasonable written policies,
    standards and regulations established by the Company from time to time which failure is not cured within sixty (60) days after receipt of written notice of such failure from the Company; (iii) any material act of fraud, embezzlement, or other unlawful
    act committed by you that is at the expense of or harms the Company; (iv) your knowing violation of a federal or state law or regulation applicable to the Company’s business, which violation was or is reasonably likely to be materially injurious to the
    Company; (v) your material breach of the terms of your offer letter or the Employee Proprietary Information Agreement; or (vi) your conviction of, the entering of a guilty plea or plea of nolo contendere or no contest (or the equivalent) with respect
    to either a felony or a crime (other than felonies or crimes relating to motor vehicles) that materially adversely affects the Company.

   

  Change of Control. For purposes of this letter agreement, “Change of Control” shall mean: (i) the acquisition of the Company by
    another entity by means of any transaction or series of related transactions (including, without limitation, any merger, consolidation or other form of reorganization in which outstanding shares of the Company are exchanged for securities or other
    consideration issued, or caused to be issued, by the acquiring entity or its subsidiary) (each a “Merger Transaction”), unless the Company’s stockholders of record as constituted immediately prior to such Merger Transaction will, immediately
    after such Merger Transaction, hold at least a majority of the voting power of the surviving or acquiring entity in the same relative proportions, (ii) a sale of all or substantially all of the assets of the Company or the exclusive license of all or
    substantially all of the Company’s intellectual property by means of any transaction or series of related transactions, or (iii) a liquidation, dissolution or winding up of the Company.

   

  Good Reason. For purposes of this letter agreement, “Good Reason” shall mean, without employee’s written consent, and only if
    employee’s resignation occurs within thirty (30) days after the occurrence of any of the following: (i) there is a material reduction of the level of your compensation (excluding any bonuses) (except where there is a general reduction applicable to the
    members of the Company’s management team, defined as the Chief Executive Officer and all employees reporting directly to the Chief Executive Officer); (ii) there is a material reduction in your overall responsibilities or authority, or scope of duties,
    it being understood that a reduction in your responsibilities or authority following a Change of Control shall not constitute Good Reason unless there also occurs a demotion in your title or position; (iii) there is a breach of a material term of this
    letter Agreement by the Company; or (iv) without your prior written consent, a material change in the geographic location at which you must perform your services; provided, that in no instance will your relocation to a facility or a location of fifty
    (50) miles or less from your then current office location be deemed material for purposes of this Agreement.

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