Document:

EX-10.10

 Exhibit 10.10 

MIRUM PHARMACEUTICALS, INC. 

May 15, 2019 
 Chris Peetz 

[...***...] 
 Re:    Amended and
Restated Employment Terms 
 Dear Chris: 

MIRUM PHARMACEUTICALS, INC. (the “Company”) is pleased to confirm your appointment
as President and Chief Executive Officer, pursuant to the following terms of this Amended and Restated Offer Letter (this “Offer Letter”), effective as of March 12, 2019 (the “Effective Date”).
This Offer Letter amends and restates the Offer Letter, dated December 3, 2018, by and between the Company and you (the “Prior Letter”). 

You will be responsible for working closely with the Company’s Board of Directors (the “Board”) and the executive team of the
Company to further the goals and objectives of the Company, consistent with the usual and customary duties of a President and Chief Executive Officer. You will work at the Company’s U.S. headquarters in Foster City. Of course, the Company may
change your position, duties, and work location from time to time in its discretion. 
 As of the Effective Date, your base salary will be $475,000 on an
annualized basis, less payroll deductions and withholdings, paid on the Company’s normal payroll schedule. You will also be eligible to earn an annual performance bonus, with a target bonus of 50% of your annual base salary, based on the
attainment of individual and/or Company objectives. The attainment of such objectives, and the actual amount (if any) of such bonus, will be determined by the Company in its sole discretion, and any such bonus will not be deemed earned unless you
are an employee of the Company in good standing on the dates the bonus is determined and paid. 
 During your employment, you will be eligible to
participate in the standard benefits plans offered to similarly situated employees by the Company from time to time, subject to plan terms and generally applicable Company policies. A full description of these benefits is available upon request.
Exempt employees may take a reasonable amount of time off with pay, as permitted by their duties and responsibilities, and as approved in advance by their supervisor. Exempt employees do not accrue vacation, and there is no set guideline as to how
much vacation each employee will be permitted to take. Supervisors will approve paid vacation requests based on the employee’s progress on work goals or milestones, status of projects, fairness to the working team, and productivity and
efficiency of the employee. Since vacation is not allotted or accrued, “unused” vacation time will not be carried over from one year to the next nor paid out upon termination. The Company may change compensation and benefits from time to
time in its discretion. 
 Subject to approval by the Board, the Company anticipates granting you an option to purchase 2,750,000 shares of the
Company’s common stock at the fair market value as determined by the Board as of the date of grant (the “Option”). The anticipated Option will be governed by the terms and conditions of the Company’s 2018 Equity
Incentive Plan (the “Plan”) and your grant agreement, and will include a four year vesting schedule, under which 25% of your Option will vest 12 months after the vesting commencement date, and 1/48th of the total shares will
vest at the end of each month thereafter, until either the Option is fully vested or your continuous service (as defined in the Plan) terminates, whichever occurs first. For the avoidance of doubt, the Option shall be in addition to the option grant
contemplated by the Prior Letter. 

  
 Page 1 

 As a Company employee, you will be expected to abide by Company rules and policies. As a condition of
employment, you must continue to comply with the Employee Confidential Information and Inventions Assignment Agreement previously executed by you, which prohibits unauthorized use or disclosure of the Company’s proprietary information, among
other obligations. 
 In your work for the Company, you will be expected not to use or disclose any confidential information, including trade secrets, of
any former employer or other person to whom you have an obligation of confidentiality. Rather, you will be expected to use only that information which is generally known and used by persons with training and experience comparable to your own, which
is common knowledge in the industry or otherwise legally in the public domain, or which is otherwise provided or developed by the Company. You agree that you will not bring onto Company premises any unpublished documents or property belonging to any
former employer or other person to whom you have an obligation of confidentiality. You hereby represent that you have disclosed to the Company any contract you have signed that may restrict your activities on behalf of the Company. 

Normal business hours are from 9:00 a.m. to 5:00 p.m., Monday through Friday. As an exempt salaried employee, you will be expected to work additional hours as
required by the nature of your work assignments. 
 Your employment with the Company will be “at-will.”
You may terminate your employment with the Company at any time and for any reason whatsoever simply by notifying the Company. Likewise, the Company may terminate your employment at any time, with or without cause or advance notice. Your employment at-will status can only be modified in a written agreement signed by you and by an officer of the Company. The foregoing does not modify any of your rights under the Company’s Severance Benefit Plan. 

To ensure the rapid and economical resolution of disputes that may arise in connection with your employment with the Company, you and the Company agree that
any and all disputes, claims, or causes of action, in law or equity, including but not limited to statutory claims, arising from or relating to the enforcement, breach, performance, or interpretation of this Offer Letter, your employment with the
Company, or the termination of your employment, shall be resolved, to the fullest extent permitted by law, by final, binding and confidential arbitration conducted by JAMS or its successor, under JAMS’ then applicable rules and procedures for
employment disputes (available upon request and also currently available at http://www.jamsadr.com/rules-employment-arbitration/). You acknowledge that by
agreeing to this arbitration procedure, both you and the Company waive the right to resolve any such dispute through a trial by jury or judge or administrative proceeding. You will have the right to be represented by legal counsel at any
arbitration proceeding. The arbitrator shall: (a) have the authority to compel adequate discovery for the resolution of the dispute and to award such relief as would otherwise be permitted by law; and (b) issue a written statement signed
by the arbitrator regarding the disposition of each claim and the relief, if any, awarded as to each claim, the reasons for the award, and the arbitrator’s essential findings and conclusions on which the award is based. The arbitrator shall be
authorized to award all relief that you or the Company would be entitled to seek in a court of law. The Company shall pay all JAMS arbitration fees in excess of the administrative fees that you would be required to pay if the dispute were decided in
a court of law. Nothing in this Offer Letter is intended to prevent either you or the Company from obtaining injunctive relief in court to prevent irreparable harm pending the conclusion of any such arbitration. 

  
 Page 2 

 This Offer Letter, together with your Employee Confidential Information and Inventions Assignment Agreement,
forms the complete and exclusive statement of your employment agreement with the Company. It supersedes any other agreements or promises made to you by anyone, whether oral or written. Changes in your employment terms, other than those changes
expressly reserved to the Company’s discretion in this Offer Letter, require a written modification signed by an officer of the Company. If any provision of this Offer Letter is determined to be invalid or unenforceable, in whole or in part,
this determination shall not affect any other provision of this Offer Letter and the provision in question shall be modified so as to be rendered enforceable in a manner consistent with the intent of the parties insofar as possible under applicable
law. This Offer Letter may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying with the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act or other applicable law) or other transmission
method and shall be deemed to have been duly and validly delivered and be valid and effective for all purposes. 
 Please sign and date this Offer Letter to
confirm your continued employment with the Company under the terms described above. 
 Sincerely, 

 

					
	 /s/ Mike Grey
	 		 	
	Mike Grey, Executive Chairman	 		 	
			
	Understood and Accepted:	 		 	
			
	 /s/ Chris Peetz
	 		 	 5/23/2019

	Chris Peetz	 		 	Date
	[...***...]@mirumpharma.com	 		 	

  
 Page 3EX-10.11

 Exhibit 10.11 

MIRUM PHARMACEUTICALS, INC. 

December 1, 2018  
 Pamela Vig 

[...***...] 
  

	Re:	 Employment Terms 

Dear Pamela: 
 MIRUM PHARMACEUTICALS, INC. (the
“Company”) is pleased to offer you the position of Chief Scientific Officer, on the following terms. 
 You will be responsible for
working closely with the executive team of the Company to further the goals and objectives of the Company, and you shall perform such duties as are customarily associated with your position. You will report to the Chief Executive Officer and will
work at the Company’s U.S. headquarters in Menlo Park. Of course, the Company may change your position, duties, and work location from time to time in its discretion. 

Your base salary will be $330,000 on an annualized basis, less payroll deductions and withholdings, paid on the Company’s normal payroll schedule. You
will also be eligible to earn an annual performance bonus, with a target bonus of 35% of your annual base salary, based on the attainment of individual and/or Company objectives. The attainment of such objectives, and the actual amount (if any) of
such bonus, will be determined by the Company in its sole discretion, and any such bonus will not be deemed earned unless you are an employee of the Company in good standing on the dates the bonus is determined and paid.  

During your employment, you will be eligible to participate in the standard benefits plans offered to similarly situated employees by the Company from time to
time, subject to plan terms and generally applicable Company policies. A full description of these benefits is available upon request. Exempt employees may take a reasonable amount of time off with pay, as permitted by their duties and
responsibilities, and as approved in advance by their supervisor. Exempt employees do not accrue vacation, and there is no set guideline as to how much vacation each employee will be permitted to take. Supervisors will approve paid vacation requests
based on the employee’s progress on work goals or milestones, status of projects, fairness to the working team, and productivity and efficiency of the employee. Since vacation is not allotted or accrued, “unused” vacation time will
not be carried over from one year to the next nor paid out upon termination. The Company may change compensation and benefits from time to time in its discretion. 

Subject to approval by the Company’s Board of Directors (the “Board”), the Company anticipates granting you an option to purchase
1,250,000 shares of the Company’s common stock at the fair market value as determined by the Board as of the date of grant (the “Option”). The anticipated Option will be governed by the terms and conditions of the
Company’s 2018 Equity Incentive Plan (the “Plan”) and your grant agreement, and will include a four year vesting schedule, under which 25% of your Option will vest 12 months after the vesting commencement date, and
1/48th of the total shares will vest at the end of each month thereafter, until either the Option is fully vested or your continuous service (as defined in the Plan) terminates, whichever occurs first. 

 As a Company employee, you will be expected to abide by Company rules and policies. As a condition of
employment, you must sign and comply with the attached Employee Confidential Information and Inventions Assignment Agreement which prohibits unauthorized use or disclosure of the Company’s proprietary information, among other obligations. 

In your work for the Company, you will be expected not to use or disclose any confidential information, including trade secrets, of any former employer or
other person to whom you have an obligation of confidentiality. Rather, you will be expected to use only that information which is generally known and used by persons with training and experience comparable to your own, which is common knowledge in
the industry or otherwise legally in the public domain, or which is otherwise provided or developed by the Company. You agree that you will not bring onto Company premises any unpublished documents or property belonging to any former employer or
other person to whom you have an obligation of confidentiality. You hereby represent that you have disclosed to the Company any contract you have signed that may restrict your activities on behalf of the Company. 

Normal business hours are from 9:00 a.m. to 5:00 p.m., Monday through Friday. As an exempt salaried employee, you will be expected to work additional hours as
required by the nature of your work assignments. 
 Your employment with the Company will be “at-will.”
You may terminate your employment with the Company at any time and for any reason whatsoever simply by notifying the Company. Likewise, the Company may terminate your employment at any time, with or without cause or advance notice. Your employment at-will status can only be modified in a written agreement signed by you and by an officer of the Company. 
 This offer
is contingent upon a reference check and satisfactory proof of your right to work in the United States. You agree to assist as needed and to complete any documentation at the Company’s request to meet these conditions. 

To ensure the rapid and economical resolution of disputes that may arise in connection with your employment with the Company, you and the Company agree that
any and all disputes, claims, or causes of action, in law or equity, including but not limited to statutory claims, arising from or relating to the enforcement, breach, performance, or interpretation of this Agreement, your employment with the
Company, or the termination of your employment, shall be resolved, to the fullest extent permitted by law, by final, binding and confidential arbitration conducted by JAMS or its successor, under JAMS’ then applicable rules and procedures for
employment disputes (available upon request and also currently available at http://www.jamsadr.com/rules-employment-arbitration/). You acknowledge that by agreeing to this arbitration procedure, both you and the Company waive the right to
resolve any such dispute through a trial by jury or judge or administrative proceeding. You will have the right to be represented by legal counsel at any arbitration proceeding. The arbitrator shall: (a) have the authority to compel
adequate discovery for the resolution of the dispute and to award such relief as would otherwise be permitted by law; and (b) issue a written statement signed by the arbitrator regarding the disposition of each claim and the relief, if any,
awarded as to each claim, the reasons for the award, and the arbitrator’s essential findings and conclusions on which the award is based. The arbitrator shall be authorized to award all relief that you or the Company would be entitled to seek
in a court of law. The Company shall pay all JAMS arbitration fees in excess of the administrative fees that you would be required to pay if the dispute were decided in a court of law. Nothing in this letter agreement is intended to prevent either
you or the Company from obtaining injunctive relief in court to prevent irreparable harm pending the conclusion of any such arbitration. 

  
 Page 2 

 This letter, together with your Employee Confidential Information and Inventions Assignment Agreement, forms
the complete and exclusive statement of your employment agreement with the Company. It supersedes any other agreements or promises made to you by anyone, whether oral or written. Changes in your employment terms, other than those changes expressly
reserved to the Company’s discretion in this letter, require a written modification signed by an officer of the Company. If any provision of this offer letter agreement is determined to be invalid or unenforceable, in whole or in part, this
determination shall not affect any other provision of this offer letter agreement and the provision in question shall be modified so as to be rendered enforceable in a manner consistent with the intent of the parties insofar as possible under
applicable law. This letter may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying with the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act or other applicable law) or other
transmission method and shall be deemed to have been duly and validly delivered and be valid and effective for all purposes. 
 Please sign and date this
letter, and the enclosed Employee Confidential Information and Inventions Assignment Agreement and return them to me by December 1, 2018, if you wish to accept employment at the Company under the terms described above. If you accept our offer,
we would like you to start on December 1, 2018. 
 We look forward to your favorable reply and to a productive and enjoyable work relationship. 

Sincerely, 
  

					
	 /s/ Chris Peetz
	 		 	
	Chris Peetz, President	 		 	
			
	Understood and Accepted:	 		 	
			
	 /s/ Pamela Vig
	 		 	 12/4/2018

	Pamela Vig	 		 	Date
			
	      
	 		 	
	[...***...]@mirumpharma.com	 		 	

 Attachment: Employee Confidential Information and Inventions Assignment Agreement 

  
 Page 3

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