Document:

EX-10.5

 Exhibit 10.5 
  

 
 Amprius Technologies, Inc. 

September 13, 2022 
 Jonathan Bornstein 

c/o Amprius Technologies, Inc. 
 1180 Page Avenue 

Fremont, California 94538 
 Re: Confirmatory Employment Letter

 Dear Jon: 
 This letter agreement (the
“Agreement”) is entered into between Jonathan Bornstein (“you”) and Amprius Technologies, Inc. (the “Company” or “we”). This Agreement is effective as of the date you sign it, as
indicated below. The purpose of this Agreement is to confirm the current terms and conditions of your employment. 
 1. Position.
Your position will continue to be Chief Operating Officer, and you will continue to report to the Company’s Chief Executive Officer or to such other person as the Company subsequently may determine. This is a full-time position. You will
perform the duties and have the responsibilities and authority customarily performed and held by an employee in your position or as otherwise may be assigned or delegated to you by the Company. While you render services to the Company, you will not
engage in any other employment, consulting or other business activity (whether full-time or part-time) that would create a conflict of interest with the Company. By signing this Agreement, you reconfirm to the
Company that you have no contractual commitments or other legal obligations that would prohibit you from performing your duties for the Company. 

2. Base Salary. Your current annual base salary is $300,000, which will be payable, less applicable withholdings and deductions, in
accordance with the Company’s normal payroll practices. Your annual base salary will be subject to review and adjustment based upon the Company’s normal performance review practices. 

3. Annual Bonus. You are eligible to earn an annual cash bonus with a target value of 30% of your annual base salary, based on
achieving performance objectives established by the Board or an authorized committee of the Board (such committee, a “Committee”) in its sole discretion and payable upon achievement of those objectives as determined by the Board or
a Committee. If any portion of such bonus is earned, it will be paid when practicable after the Board or a Committee determines it has been earned, subject to you remaining employed with the Company through the payment date. Your annual bonus
opportunity will be subject to review and adjustment based upon the Company’s normal performance review practices. In addition, the Board and/or a Committee may, in its direction, grant you discretionary bonuses from time to time. 

  
 Amprius Executive Confirmatory
Employment Letter – Confidential 
 1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420 

 4. Equity Awards. You will be eligible to receive awards of stock options, restricted
stock units or other equity awards pursuant to any plans or arrangements the Company may have in effect from time to time. The Board and/or a Committee will determine in its discretion whether you will be granted any such equity awards and the terms
of any such award in accordance with the terms of any applicable plan or arrangement that may be in effect from time to time. 
 5.
Employee Benefits. As a regular full-time employee of the Company, you will continue to be eligible to participate in Company-sponsored benefits in accordance with the terms of the Company’s policies and benefits plans and receive any
perquisites as may be provided by the Company from time to time. In addition, you will continue to be entitled to paid vacation in accordance with the Company’s paid time off policy, as in effect from time to time. Information regarding
coverage, eligibility, and other information regarding these benefits is set forth in more detailed documents that are available from the Company. With the exception of the Company’s at-will employment
policy, discussed below, the Company may, from time to time, in its sole discretion, modify or eliminate its policies and/or benefits offered to employees. 

6. Employee Confidentiality and Invention Assignment. As an employee of the Company, you will continue to have access to certain
confidential information of the Company and you may, during the course of your employment, develop certain information or inventions that will be the property of the Company. To protect the interests of the Company, you are required to sign and
comply with an At-Will Employment, Confidential Information, Invention Assignment and Arbitration Agreement with the Company (the “Confidential Information Agreement”), which is incorporated
by reference herein. 
 7. Employment Relationship. Employment with the Company will continue to be for no specific period of time.
Your employment with the Company will continue to be “at will,” meaning that either you or the Company may terminate your employment at any time and for any reason, with or without cause. Any contrary representations that may have been
made to you are superseded by this Agreement. This is the full and complete agreement between you and the Company on this term. Although your job duties, title, compensation and benefits, as well as the Company’s personnel policies and
procedures, may change from time to time, the “at will” nature of your employment may only be changed in an express written agreement signed by you and the Company’s Chief Executive Officer. 

8. Protected Activity Not Prohibited. Nothing in this Agreement or in any other agreement between you and the Company, as applicable,
will in any way limit or prohibit you from engaging for a lawful purpose in any Protected Activity. For purposes of this Agreement, “Protected Activity” means filing a charge or complaint, or otherwise communicating, cooperating, or
participating with, any state, federal, or other governmental agency, including but not limited to the U.S. Securities and Exchange Commission, the Equal Employment Opportunity Commission, and the National Labor Relations Board. Notwithstanding any
restrictions set forth in this Agreement or in 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 2
		
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420	  	

 
any other agreement between you and the Company, as applicable, you understand that you are not required to obtain authorization from the Company prior to disclosing information to, or
communicating with, such agencies, nor are you obligated to advise the Company as to any such disclosures or communications. In making any such disclosures or communications, you agree to take all reasonable precautions to prevent any unauthorized
use or disclosure of any information that may constitute Company Confidential Information (within the meaning of the Confidential Information Agreement) to any parties other than the relevant government agencies. You further understand that
Protected Activity does not include the disclosure of any Company attorney-client privileged communications, and that any such disclosure without the Company’s written consent will constitute a material breach of this Agreement. You acknowledge
that the Company has provided you with notice in compliance with the Defend Trade Secrets Act of 2016 regarding immunity from liability for limited disclosures of trade secrets. The full text of the notice is attached in
Exhibit A. 
 9. Governing Law; Venue. All questions concerning the construction, validity and
interpretation of this Agreement and the exhibits hereto shall be governed by and construed in accordance with the domestic laws of the State of California, without giving effect to any choice of law or conflict of law provision or rule (whether of
the State of California or any other jurisdiction) that would cause the application of the laws of any jurisdiction other than the State of California. Any lawsuit arising out of or in any way related to this Agreement to the Parties’
relationship hereunder shall be brought only in those state or federal courts having jurisdiction over actions arising in Alameda County in the State of California. 

10. Miscellaneous. This Agreement and the Confidential Information Agreement constitute the entire agreement between you and the
Company regarding the subject matters discussed, and they supersede all prior negotiations, representations or agreements between you and the Company. This Agreement may only be modified by a written agreement signed by you and the Company’s
Chief Executive Officer. 
 11. Definitions. 

a. “Board” means (i) prior to the Closing, the Board of Directors of the Company, or (ii) on or following the
Closing, the Board of Directors of Parent. 
 b. “Closing” means the closing of the merger contemplated by that certain
Business Combination Agreement by and among the Company, Parent, and certain other parties, dated May 11, 2022, as may be amended from time to time. 

c. “Parent” means Kensington Capital Acquisition Corp. IV, a Cayman Islands exempted company (which, immediately prior to the
Closing, will transfer by way of continuation to and domesticate as a Delaware corporation, and on or following the Closing, will be named Amprius Technologies, Inc.), or any successor thereto. 

[Signature page follows.] 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 3
		
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420	  	

 To confirm the current terms and conditions of your employment, please sign and date in the
spaces indicated and return this Agreement to the Company. 
  

			
	Sincerely,
	
	Amprius Technologies, Inc.
		
	By:	 	 /s/ Kang Sun

	Kang Sun
	Chief Executive Officer

 I have read and understood this Agreement and hereby acknowledge, accept and agree to the terms as set
forth herein and further acknowledge that no other commitments were made to me as part of my employment offer except as specifically set forth herein. 
  

	
	 /s/ Jonathan Bornstein

	 Jonathan Bornstein

 Date: September 13, 2022 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 4
		
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420	  	

 Exhibit A 

SECTION 7 OF THE DEFEND TRADE SECRETS ACT OF 2016 

“ . . . An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a
trade secret that—(A) is made—(i) in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation
of law; or (B) is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal. . . . An individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law
may disclose the trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual—(A) files any document containing the trade secret under seal; and (B) does not disclose the
trade secret, except pursuant to court order.” 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 5
		
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420EX-10.6

 Exhibit 10.6 
  

 
 September 8, 2022 

Constantin Ionel Stefan 
 c/o Amprius Technologies, Inc. 

1180 Page Avenue 
 Fremont, California 94538 

Re: Confirmatory Employment Letter 
 Dear Ionel: 

This letter agreement (the “Agreement”) is entered into between Constantin Ionel Stefan (“you”) and Amprius
Technologies, Inc. (the “Company” or “we”). This Agreement is effective as of the date you sign it, as indicated below. The purpose of this Agreement is to confirm the current terms and conditions of your
employment. 
 1. Position. Your position will continue to be Chief Technology Officer, and you will continue to report to the
Company’s Chief Executive Officer or to such other person as the Company subsequently may determine. This is a full-time position. You will perform the duties and have the responsibilities and authority customarily performed and held by an
employee in your position or as otherwise may be assigned or delegated to you by the Company. While you render services to the Company, you will not engage in any other employment, consulting or other business activity (whether full-time or part-time) that would create a conflict of interest with the Company. By signing this Agreement, you reconfirm to the Company that you have no contractual commitments or other legal obligations that
would prohibit you from performing your duties for the Company. 
 2. Base Salary. Your current annual base salary is $250,000, which
will be payable, less applicable withholdings and deductions, in accordance with the Company’s normal payroll practices. Your annual base salary will be subject to review and adjustment based upon the Company’s normal performance review
practices. 
 3. Annual Bonus. You are eligible to earn an annual cash bonus with a target value of 30% of your annual base salary,
based on achieving performance objectives established by the Board or an authorized committee of the Board (such committee, a “Committee”) in its sole discretion and payable upon achievement of those objectives as determined by the
Board or a Committee. If any portion of such bonus is earned, it will be paid when practicable after the Board or a Committee determines it has been earned, subject to you remaining employed with the Company through the payment date. Your annual
bonus opportunity will be subject to review and adjustment based upon the Company’s normal performance review practices. In addition, the Board and/or a Committee may, in its direction, grant you discretionary bonuses from time to time. 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	
		  	
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420

 4. Equity Awards. You will be eligible to receive awards of stock options, restricted
stock units or other equity awards pursuant to any plans or arrangements the Company may have in effect from time to time. The Board and/or a Committee will determine in its discretion whether you will be granted any such equity awards and the terms
of any such award in accordance with the terms of any applicable plan or arrangement that may be in effect from time to time. 
 5.
Employee Benefits. As a regular full-time employee of the Company, you will continue to be eligible to participate in Company-sponsored benefits in accordance with the terms of the Company’s policies and benefits plans and receive any
perquisites as may be provided by the Company from time to time. In addition, you will continue to be entitled to paid vacation in accordance with the Company’s paid time off policy, as in effect from time to time. Information regarding
coverage, eligibility, and other information regarding these benefits is set forth in more detailed documents that are available from the Company. With the exception of the Company’s at-will employment
policy, discussed below, the Company may, from time to time, in its sole discretion, modify or eliminate its policies and/or benefits offered to employees. 

6. Employee Confidentiality and Invention Assignment. As an employee of the Company, you will continue to have access to certain
confidential information of the Company and you may, during the course of your employment, develop certain information or inventions that will be the property of the Company. To protect the interests of the Company, you are required to sign and
comply with an At-Will Employment, Confidential Information, Invention Assignment and Arbitration Agreement with the Company (the “Confidential Information Agreement”), which is incorporated
by reference herein. 
 7. Employment Relationship. Employment with the Company will continue to be for no specific period of time.
Your employment with the Company will continue to be “at will,” meaning that either you or the Company may terminate your employment at any time and for any reason, with or without cause. Any contrary representations that may have been
made to you are superseded by this Agreement. This is the full and complete agreement between you and the Company on this term. Although your job duties, title, compensation and benefits, as well as the Company’s personnel policies and
procedures, may change from time to time, the “at will” nature of your employment may only be changed in an express written agreement signed by you and the Company’s Chief Executive Officer. 

8. Protected Activity Not Prohibited. Nothing in this Agreement or in any other agreement between you and the Company, as applicable,
will in any way limit or prohibit you from engaging for a lawful purpose in any Protected Activity. For purposes of this Agreement, “Protected Activity” means filing a charge or complaint, or otherwise communicating, cooperating, or
participating with, any state, federal, or other governmental agency, including but not limited to the U.S. Securities and Exchange Commission, the Equal Employment Opportunity Commission, and the National Labor Relations Board. Notwithstanding any
restrictions set forth in this Agreement or in 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 2
		  	
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420

 
any other agreement between you and the Company, as applicable, you understand that you are not required to obtain authorization from the Company prior to disclosing information to, or
communicating with, such agencies, nor are you obligated to advise the Company as to any such disclosures or communications. In making any such disclosures or communications, you agree to take all reasonable precautions to prevent any unauthorized
use or disclosure of any information that may constitute Company Confidential Information (within the meaning of the Confidential Information Agreement) to any parties other than the relevant government agencies. You further understand that
Protected Activity does not include the disclosure of any Company attorney-client privileged communications, and that any such disclosure without the Company’s written consent will constitute a material breach of this Agreement. You acknowledge
that the Company has provided you with notice in compliance with the Defend Trade Secrets Act of 2016 regarding immunity from liability for limited disclosures of trade secrets. The full text of the notice is attached in
Exhibit A. 
 9. Governing Law; Venue. All questions concerning the construction, validity and
interpretation of this Agreement and the exhibits hereto shall be governed by and construed in accordance with the domestic laws of the State of California, without giving effect to any choice of law or conflict of law provision or rule (whether of
the State of California or any other jurisdiction) that would cause the application of the laws of any jurisdiction other than the State of California. Any lawsuit arising out of or in any way related to this Agreement to the Parties’
relationship hereunder shall be brought only in those state or federal courts having jurisdiction over actions arising in Alameda County in the State of California. 

10. Miscellaneous. This Agreement and the Confidential Information Agreement constitute the entire agreement between you and the
Company regarding the subject matters discussed, and they supersede all prior negotiations, representations or agreements between you and the Company. This Agreement may only be modified by a written agreement signed by you and the Company’s
Chief Executive Officer. 
 11. Definitions. 

a. “Board” means (i) prior to the Closing, the Board of Directors of the Company, or (ii) on or following the
Closing, the Board of Directors of Parent. 
 b. “Closing” means the closing of the merger contemplated by that certain
Business Combination Agreement by and among the Company, Parent, and certain other parties, dated May 11, 2022, as may be amended from time to time. 

c. “Parent” means Kensington Capital Acquisition Corp. IV, a Cayman Islands exempted company (which, immediately prior to the
Closing, will transfer by way of continuation to and domesticate as a Delaware corporation, and on or following the Closing, will be named Amprius Technologies, Inc.), or any successor thereto. 

[Signature page follows.] 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 3
		  	
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420

 To confirm the current terms and conditions of your employment, please sign and date in the
spaces indicated and return this Agreement to the Company. 
  

			
	Sincerely,
	
	Amprius Technologies, Inc.
		
	By:	 	 /s/ Kang Sun

	Kang Sun
	Chief Executive Officer

 I have read and understood this Agreement and hereby acknowledge, accept and agree to the terms as set
forth herein and further acknowledge that no other commitments were made to me as part of my employment offer except as specifically set forth herein. 
  

	
	 /s/ Constantin Ionel Stefan

	Constantin Ionel Stefan
	Date: September 12, 2022

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 4
		  	
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420

 Exhibit A 

SECTION 7 OF THE DEFEND TRADE SECRETS ACT OF 2016 

“ . . . An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a
trade secret that—(A) is made—(i) in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation
of law; or (B) is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal. . . . An individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law
may disclose the trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual—(A) files any document containing the trade secret under seal; and (B) does not disclose the
trade secret, except pursuant to court order.” 

  

			
	Amprius Executive Confirmatory Employment Letter - Confidential	  	Page 5
		  	
	1180 PAGE AVE., FREMONT, CA 94538 * PH: 800.425.8803 * FX: 866.685.7420

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