Document:

EX-4.10

 Exhibit 4.10 

Employment agreement 

Lex Bakker 
 The undersigned: 

Merus B.V., located at Padualaan 8 in 3584 CH Utrecht, duly represented by Mr T. Logtenberg in the position of Managing Director, hereinafter referred to as
“Employer”, 
 and 
 Alexander Bakker, born in
Ooststellingwerg, on 1 December 1966, residing at Waardenburg 51, 2181 LN Hillegom, hereinafter referred to as “Employee”, 
 have agreed as
follows: 
 Article 1 Start of employment, position, nature and location of work 

The Employee shall commence his employment with the Employer on 1 October 2010 in the position of Chief Development Officer (CDO). 

The CDO reports directly to the CEO and is a member of the management team. The CDO provides leadership and guidance to the planning and execution of the
internal and external pre-clinical and clinical development activities of product candidates of Merus according to strict quality demands as required by the FDA and EMEA. The CDO is responsible for the
creation and implementation of a development plan and the associated budget based on the integration of the scientific and business objectives of Merus and knowledge of the regulatory environment and
pre-clinical and clinical development processes. In the management team, the CDO contributes to the strategic discussions regarding new product and licence possibilities based on his expertise and to all
business development activities in a broader sense. The CDO provides the CEO and the Supervisory Board with recommendations regarding possibilities and risks of product development activities. 

This position is performed at or from Padualaan 8 – 3584 CH Utrecht. 

Article 2 Duration 
 This employment agreement is
concluded for an undetermined period of time. 
 Article 3 Probationary period 

The probationary period is two months. During the probationary period, both the Employer and the Employee may terminate the employment agreement at any time
with immediate effect. 
 Article 4 Cancellation 

Outside of the probationary period, both the Employer and the Employee are authorised to cancel the employment agreement prematurely in writing with due
observance of the legal notice periods. The employment agreement can only be cancelled at the end of each calendar month. 
  

					
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 Article 5 Salary 

The gross salary excluding of vacation allowance of the Employee at the start of employment is €8,416.00 per month based on a full-time position. The
payment of the salary takes place no later than the last day of the month. 
 Article 6 Salary in case of disability 

From the first day of disability during the first year, the Employee is entitled to continued payment of 100% of the most recent salary and to 70% of the most
recent salary during the second year. 
 Article 7 Working time, working hours and overtime 

The position will be fulfilled for 40 hours per week (full-time position). The working hours shall be determined by the Employer in consultation with the
Employee. 
 The Employee is reasonably obligated to abide by a request of the Employer to work overtime, without receiving overtime pay. 

Article 8 Vacation and vacation allowance 
 The Employee
is entitled to 30 vacation days per calendar year with retention of salary. The vacation days are used in consultation with the Employer. 
 As a rule,
vacation days must be used in the year to which they relate. In the first year of employment, the number of vacation days is 12. 
 The Employee is entitled
to a vacation allowance of 8% of the gross salary. The vacation allowance is calculated over the period located between 1 June and 31 May. The vacation allowance is paid as a lump sum in the month of May. 

In case of an interim start or termination of the employment agreement, the vacation allowance shall be calculated pro rata the number of months the Employee
has been employed. 
 Article 9 Employment and company regulations of Merus BV 

The Employee declares to be aware of and to agree with the employment and company regulations applicable at the Employer. The Employee shall receive a copy of
these employment and company regulations at the start of the employment. 
 Article 10 Employee Manual 

This employment agreement is subject to the attached Employee Manual (Attachment I). This Employee Manual contains the general employment conditions which
apply to all employees of Merus B.V. The Employee Manual is an integral part of this employment agreement and is provided to the Employee at the start of the employment. The provisions laid down in the Employee Manual apply to this employment
agreement insofar as these are not expressly deviated from. The Employer reserves the right to make changes to the provisions which are laid down in the Employee Manual. 

Article 11 Pension Scheme 
 A pension scheme is set up for
the Employee (Annex II). 
  

					
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 Special provisions 

Article 12 Confidentiality clause 
 The Employee is
obligated to observe the confidentiality of all he has learned about the business of the Employer and its clients and of which the Employee can reasonably suspect the confidential nature during and for a period of 5 years after the end of the
employment agreement. 
 For every non-compliance or violation of the above, the Employee shall forfeit an
immediately payable penalty of €50,000 to the Employer, as well as a penalty of €1,000 for each day the violation continues. This penalty shall be owed by the mere fact of the non-compliance or
violation but shall not affect the right of the Employer to claim full damage. The penalty is owed directly to the Employer and shall be for the benefit of the Employer, which constitutes a deviation from Article
7:650(3-5) DCC. 
 Article 13 Relationship clause 

The Employee is forbidden may not perform work for or on behalf of a relationship of the Employer which exist at the time of the end of this employment
agreement who perform activities in a similar area or which otherwise competes with the activities of the Employer for a period of 12 months after the end of the employment agreement. 

This provision shall not apply if the Employee has received prior written permission from the Employer, whether or not granted under special conditions. 

For each violation of the above, the Employee shall forfeit an immediately payable penalty of €10,000 to the Employer, as well as a penalty of
€1,000 for each day the violation continues. This penalty shall be owed by the mere fact of the violation but shall not affect the right of the Employer to claim full damage. The penalty is owed directly to the Employer and shall be for its
benefit, which constitutes a deviation from Article 7:650(3-5) DCC. 
 Article 14 Ban on ancillary activities

 The Employee shall not perform work for another employer or client during the term of this employment agreement. The Employee shall also directly and
indirectly refrain from doing business for his own account. 
 This provision shall not apply if the Employee has received prior written permission from the
Employer, whether or not granted under special conditions. 
 For each non-compliance or violation of the above, the
Employee shall forfeit an immediately payable penalty of €5,000 to the Employer, as well as a penalty of €1,000 for each day the violation continues. This penalty shall be owed by the mere fact of the
non-compliance or violation but shall not affect the right of the Employer to claim full damage. The penalty is owed directly to the Employer and shall be for its benefit, which constitutes a deviation from
Article 7:650(3-5) DCC. 
  

					
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 Additional provisions 

Article 15 Intellectual property rights 
 All intellectual
property rights, including but not limited to patent rights, design rights, copyrights, trademark rights and knowledge created during and after the end of the employment agreement or as a result of the work or activities performed by the Employee in
the service of the Employer, belong or shall belong exclusively and in their entirety to the Employer. 
 If the aforementioned intellectual property rights
do not immediately accrue to the Employer based on legal agreements, the Employee hereby transfers these rights to the Employer. 
 Insofar as the
intellectual property rights mentioned in this article cannot be transferred to the Employer, the Employee hereby grants the Employer an exclusive, comprehensive and finite licence to use these rights in the broadest sense of the word without any
payment obligation of the Employer. If, despite the above, personal rights on the intellectual property mentioned in this article accrue to the Employee and insofar as the law allows, the Employee hereby waives all his/her personal rights, including
the right to have his/her name mentioned based on the Copyright Act 1912. 
 The Employee shall inform the Employer without delay of all results,
inventions, information and intellectual property rights which are the result of his/her employment and/or which are in any way relevant to the creation, protection or enforceability of the intellectual property rights. 

As long as the employment agreement and these additional provisions are in force, the Employee shall perform all actions which are necessary for the
registration of or application for intellectual property rights in name of the Employer anywhere in the world. 
 If the Employer is not able or not in a
position to give effect to the collaboration pledged above in paragraphs 2 and 6, the Employee hereby grants the Employer an irrevocable mandate to represent him/her with regard to the assignment and registration of the intellectual property rights
as referred to in paragraphs 2 and 6. 
 The Employee acknowledges and determines that his/her salary offers reasonable compensation for the loss of
intellectual and industrial property rights as set out in this Article, the employment agreement and by law. 
 Article 16 Travel expense allowance

 The Employee is entitled to compensation of travel expenses for public transportation based on economy class. In case of a move to a location within a
radius of 15km from the work location of Merus, any right to the travel expense allowance expires. 
  

					
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 Travel other than the commute which is performed in the context of the work or Merus BV will be reimbursed
separately after declaration of the costs incurred by the Employee. The travel expenses allowance is paid monthly together with the salary. 
 Article 17
Reimbursement mobile phone 
 The Employee is entitled to a mobile phone (“smartphone”) and full reimbursement of a mobile phone subscription.
The nature of the subscription is determined in consultation with the Managing Director. The costs of the subscription are paid directly by Merus. 

Article 18 Reimbursement of study expenses 
 Costs for
training in the context of the work for Merus are reimbursed in full by the Employer. If the employment agreement between the Employer and the Employee ends within 2 years after the completion of the course, the Employee shall repay 50% of the study
costs. 
 Article 19 Moving expenses 
 In case of a move
to a location within a radius of 15 km from the location of Merus, the Employee is entitled to a one-time allowance for the moving expenses of €1,500. 

Article 20 Government measures 
 Government measures which
mandate a different policy than set out in this agreement, including a change to fiscal regulation, shall be taken into account and shall not require the Employer to pay any compensation on any other ground. 

Article 21 Change clause 
 The Employer reserves the right
to change the employment agreement unilaterally if it has such compelling interest that the interest of the Employee, which is harmed by the change, must make way by standards of reasonableness and fairness. 

Article 22 Final provision 
 This agreement and all
subsequent agreements between the parties are governed by Dutch law. 
 Annexes belonging to this agreement: 

 

	 	I.	Employee Manual Merus B.V. 

  

	 	II.	Pension Scheme Lex Bakker 

 Thus agreed to, drawn up in duplicate and signed in Utrecht on [hw:]
05/08/2010. 
  

					
	Employer Signature:	  	Employee Signature:	  	
			
	[signature]	  	[signature]	  	
	T. Logtenberg	  	Alexander Bakker	  	
	Managing Director	  		  	

  

					
	Merus B.V.	  	Employment agreement Alexander Bakker	  	 Page 5 of 5

[initials]EX-4.11

 Exhibit 4.11 

Additional Employment agreement 

Supplementary to the employment agreement between John de Kruif (Employee) and Merus B.V. (Employer) regarding the start of employment of John Kruif per
2 April 2007 at Merus, the Employer and Employee hereby additionally agree that regarding the intellectual property rights the following provisions shall apply as well. 
  

	1.	All intellectual property rights, including but not limited to patent rights, design rights, copyrights, trademark rights and knowledge, created during and after the end of the employment agreement or as a result of the
work or activities performed by the Employer in the service of the Employer, belong or shall belong exclusively and in their entirety to the Employer. 

  

	2.	If the aforementioned intellectual property rights as referred to in clause 1 do not immediately accrue to the Employer pursuant to statutory provisions, the Employee hereby transfers these rights to the Employer.

  

	3.	Insofar as the intellectual property rights mentioned in clause 1 cannot be transferred to the Employer, then the Employee hereby grants the Employer, without any payment obligations of the Employer, an exclusive,
comprehensive and perpetual licence to use these rights in the broadest sense of the word. 

  

	4.	If, despite that which is agreed above, personal rights on the intellectual property mentioned in clause 1 accrue to the Employee and insofar as the law allows such, then the Employee hereby waives all his/her personal
rights, including the right he/she has to have his/her name mentioned as a result of the Copyright Act of 1912. 

  

	5.	The Employee shall inform the Employer without delay about all results, inventions, information and intellectual property rights which are the result of his/her employment and/or which are in any way relevant for the
creation, protection or enforceability of the intellectual property rights. 

  

	6.	As long as the employment agreement and these additional provisions are in force, the Employee shall perform all actions which are necessary, anywhere in the world, for the registration of or application for
intellectual property rights in the Employer’s name. 

  

	7.	If the Employer is not able, or not in a position, to give effect to the collaboration pledged above in paragraphs 2 and 6, then the Employee hereby grants the Employer an irrevocable authorisation to represent him/her
with regard to the assignment and registration of the intellectual property rights as referred to in paragraphs 2 and 6. 

  

	8.	The Employee acknowledges and determines that his/salary indeed provides a reasonable compensation for the loss of intellectual and industrial property rights as determined here, in the employment agreement and by law.

 Thus agreed, prepared in duplicate and signed in 

Utrecht on 10 March 2010: 
  

					
	For Merus B.V.:	  	Signature Employee:	  	
			
	[signature]	  	[signature]	  	
			
	T. Logtenberg	  	John de Kruif	  	
	Managing Director	  		  	

 Employment agreement John de Kruif 

Preamble, start date of employment, position, nature and location of the work 

The undersigned: 
 Merus BV, located at the Uppsalalaan 8, 3584
CT Utrecht, duly represented by Mr T. Logtenberg, in the position of Managing Director, hereinafter referred to as employer, 
 and 

John de Kruif, born in Jutphaas, on 7 January 1964, residing in de Bilt, Westerlaan 40, hereinafter referred to as employee, 

have agreed as follows: 
 Article 1 

Effective 2 April 2007, the employee will commence employment with the employer in the position of Scientific Director. 

The work associated with this position consist of: bearing overall responsibility for the daily leadership of the Research and Development Department of Merus
BV and the development of the Research and Development Strategy of Merus BV in collaboration with the Managing Director, and furthermore of any work which may be reasonable expected from the employee. This position’s duties will be performed at
or from the location Uppsalalaan 8 – 3584 CT Utrecht. 
 Duration of employment 

Article 2 
 This employment agreement is concluded for an
undetermined period of time. 
 Article 3 
 The probationary
period is two months. During the probationary period, both the employer and the employee may terminate the employment agreement with immediate effect at any time. 

Termination of employment agreement 
 Article 4

  
 [initials] 

 Outside of the probationary period, the employer and the employee are authorised to terminate the employment
agreement prematurely with due observance of the legal notice periods. The employment agreement may only be terminated per the end of each calendar month. 

The Salary 
 Article 5 

The gross salary of the employee at the start of his employment is €6,700 per month, with a full-time position. The payment of the salary takes place no
later than on the last day of the month. 
 Salary in case of disability and waiting period 

Article 6 
 In case of sickness, the employee must report that
he/she is sick to the secretary of Merus BV before 9:00 a.m. 
 From the first day of disability, the employee is entitled to the payment of 70% of the most
recent salary for a period of two years. 
 Provisions concerning working time, working hours and overtime 

Article 7 
 The working time is 40 hours per week. 

The employee is reasonably obligated to comply with a request of the employer to work overtime, without receiving overtime compensation for this. 

Vacation and vacation allowance 
 Article 8 

The employee is entitled to 30 vacation days per calendar year with retention of salary. The vacation days are used in consultation with the employer. 

As a rule, vacation days must be used during the year to which they relate. During the first year of employment, the number of vacation days is 23. 

The employee is entitled to a vacation allowance of 8% of the gross salary. The vacation allowance is calculated over the period which is located bewten
1 June and 31 May. The vacation allowance is paid in one lump sum in the first year of the month of September, and in the following years during the month of May. 

In case of an interim start or end of the employment agreement, the vacation allowance is calculated prorated to the number of months the employee is
employed. 

  
 [initials] 

 Employment and company rules 

Article 9 
 The employee declares to be aware of and to agree with
the employment and company rules that apply at the employer. The employee has received a copy of these employment and company rules. 
 Pension scheme

 Article 10 
 A pension scheme will be set up for the
employee, which is attached as annex I to this agreement. 
 Special conditions 

Confidentiality clause 
 Article 11 

The employee is obligated during and for 5 years after the end of the employment agreement to observe confidentiality with regard to all that he has learned
about the business of the employer and its clients and which the employee may reasonably suspect to be confidential in nature. 
 For any non-compliance with or violation of the above, the employer shall forfeit an immediately payable penalty of €50,000.00 to the employer, as well as a penalty of €1,000.00 for each day the violation
continues. The penalty will be forfeit by the mere fact of the non-compliance or violation but shall not affect the right of the employer to claim full damages. The penalty is owed directly to the employer and
shall be for its benefit, which is in deviation of the provisions in article 7:650, paragraph 3-5 of the Civil Code. 

Relationship clause 
 Article 12 

For 12 months after the end of the employment agreement, the employee is prohibited to perform work for or on behalf of the employer’s commercial contacts
which exist at the time of the termination of this employment agreement. 
 This provision does not apply if the employee has received written permission
for this from the employer, whether or not subject to certain conditions. 

  
 [initials] 

 For any violation of the above, the employer shall forfeit an immediately payable penalty of
€10,000.00 to the employer, as well as a penalty of €1,000.00 for each day the violation continues. The penalty will be forfeit by the mere fact of the violation but shall not affect the right of the employer to claim full damages. The
penalty is owed directly to the employer and shall be for its benefit. 
 Prohibition of ancillary activities 

Article 13 
 During this employment agreement, the employee shall
not perform work for another employer or client. Furthermore, the employee shall directly and indirectly refrain from doing business on his own behalf. 

This provision does not apply if the employee has received written permission for this from the employer, whether or not subject to certain conditions 

For any non-compliance with or violation of the above, the employer shall forfeit an immediately payable penalty of
€5,000.00 to the employer, as well as a penalty of €1,000.00 for each day the violation continues. The penalty will be forfeit by the mere fact of the non-compliance or violation but shall not affect
the right of the employer to claim full damages. The penalty is owed directly to the employer and shall be for its benefit, which is in deviation of the provisions in article 7:650, paragraph 3-5 of the Civil
Code. 
 Additional provisions 
 Article 14 

Business resources, as well as all correspondence, notes, drawings, etc. relating to business matters shall be returned in good condition to the employer by
the employee on the last working day of the employment agreement. 
 Article 15 

The employer reserves the right to amend the employment agreement unilaterally if it has such compelling interest that the interest of the employee which is
harmed by the amendment must give way for this in accordance with standards of reasonableness and fairness. 

  
 [initials] 

 Confirmation receipt of copy 

Article 16 
 The employee declares having received a signed copy
of this agreement. 
 Thus agreed, prepared in duplicate and signed in 

Driebergen, on 2 April 2007. 
  

					
	Signature employer:	  		  	Signature employee:
			
	[signature]	  		  	[signature]
			
	T. Logtenberg	  		  	John de Kruif
	Managing Director

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