Document:

EX-10.21

 Exhibit 10.21 

CUMMINGS PROPERTIES, LLC 
 STANDARD
FORM 
 AMENDMENT TO LEASE # 4  

In connection with a lease in effect between Cummings Properties, LLC, LESSOR, and SolidEnergy Systems, LLC and SolidEnergy Systems Securities
Corporation, LESSEE, at 35-B Cabot Road and Roof Rack Area and 12-B, 12-C. and
12-G Cabot Road, Woburn, Massachusetts (“premises” or “leased premises”), fully executed on March 30, 2016 (as amended and/or extended, the
“lease”), and currently scheduled to terminate on August 30, 2026, unless otherwise terminated or extended as provided in the lease, and in consideration of the mutual benefits to be derived herefrom, the parties
hereby agree to amend said lease, including its terms, conditions, covenants, and obligations (“terms”), as follows: 
  

	1.	 Effective December 30, 2021, base rent shall be changed to seven hundred sixty
nine thousand seven hundred eighty eight (769,788) dollars per year or $64,149 per month. 

  

	2.	 Effective December 30, 2021, the base month from which to determine the amount of
each annual increase in the “Cost of Living” shall be November 2019, which figure shall be compared with the figure for November 2021, and each November thereafter to determine the increase (if any) in the base rent to be
paid during the following calendar year. 

  

	3.	 Effective December 30, 2021, the size of the premises shall be decreased by approximately 28,891 square
feet (including 1.1% common area) with the relinquishment of 12-B, 12-C and 12-G Cabot Road (the “12 Cabot Suites”).
The premises shall then consist of (i) approximately 23,370 square feet at 35-B Cabot Road, and (ii) approximately 1,290 square feet at the Roof Rack Area. LESSEE shall vacate the 12 Cabot Suites on
or before noon on December 30, 2021. If LESSEE occupies the 12 Cabot Suites beyond noon on December 30, 2021, the 12 Cabot Suites shall continue to be a part of the premises to which all terms of the lease, including without limitation
Section 22, shall continue to apply. Time is of the essence. 

  

	4.	 In consideration of this amendment, in addition to the payment of monthly rent as provided in Sections 1 and 2
above, for the period of January 1, 2022 through August 30, 2026 (only) (the “Relinquishment Period”), LESSEE shall be responsible for monthly relinquishment charges as set forth in the table below, but only to the extent not
reduced by the monthly rental payments made by Zwitterco or any other tenant or occupant of the 12 Cabot Suites, as more particularly described in Sections 5 and 6 below. Notwithstanding anything to the contrary contained herein, the monthly
relinquishment charge or any portion thereof shall not be due from LESSEE until 30 days after receipt of LESSOR’S Invoice therefor in accordance with Section 6 below. Time is of the essence. Said monthly relinquishment charges are as
follows: 

  

					
	 Period
	  	Monthly Relinquishment
Charge	  	Yearly Relinquishment
Charge
	 January 1, 2022 to December 31, 2022
	  	$62,334.25	  	$748,011
	 January 1, 2023 to December 3 1,2023
	  	$64,149.75	  	$769,797
	 January 1, 2024 to December 31, 2024
	  	$65,965.25	  	$791,583
	 January 1,2025 to December 31,2025
	  	$67,780.75	  	$813,369
	 January 1, 2026 to August 30, 2026
	  	$69,596.25	  	$556,770*
		  		  	*based on eight months

  

	5.	 The parties acknowledge and agree that LESSOR and Zwitterco, Inc. (“Zwitterco”) have entered into a
lease for the 12 Cabot Suites dated November 18, 2021 (the “Zwitterco Lease”), which is currently scheduled to commence on the date LESSOR obtains possession of said suites. Subject to the terms, conditions, covenants, and obligations
of the Zwitterco Lease, LESSOR hereby represents that the Zwitterco Lease includes the following terms: (i) the term of the Zwitterco Lease expires on the last day of the calendar month in which occurs the five-year anniversary of the date
LESSOR obtains possession of the 12 Cabot Suites, (ii) Zwitterco shall pay LESSOR a security deposit of $331,100 to be held in accordance with the Zwitterco Lease (the “Zwitterco Deposit”), and (iii) except for Zwitterco’s
right to cancel the Zwitterco Lease if LESSOR does not obtain possession of the 12 Cabot Suites by 4:00 PM on December 31, 2021 (only), neither Zwitterco nor LESSOR has an option to cancel the Zwitterco Lease, (iv) LESSOR does not have the
right to relocate Zwitterco to another location owned by LESSOR unless Zwitterco is not regularly occupying the premises; and (v) the monthly rental due under the Zwitterco Lease is at least equal to the Monthly Relinquishment Charge set forth
above throughout the term of the Zwitterco Lease. LESSOR hereby agrees to enforce Zwitterco’s obligations under the Zwitterco Lease and to diligently pursue all remedies available to LESSOR in the event of a default by Zwitterco in the payment
of rent. In the event that the Zwitterco Lease terminates for any reason other than a default by Zwitterco, then LESSEE’S obligation to pay the monthly relinquishment charge shall terminate as of the effective date of the termination of the
Zwitterco Lease. If any of the 12 Cabot Suites become available for lease during the Relinquishment Period, LESSOR agrees to use commercially reasonable efforts to re-let said suites, subject to LESSOR’S
right to subdivide any suite, at a monthly rental rate at least equal to the Monthly Relinquishment Charge set for above for the applicable period. 

 

			
	  
	 	LESSOR
	  
	 	LESSEE
	  
	 	LESSEE

W12210664-EJL-E 

AMENDMENT TO LEASE 

(continued) 
  

	6.	 Notwithstanding anything to the contrary in Sections 4 and 5 above, upon LESSOR’S receipt of a monthly
rental payment from Zwitterco for the 12 Cabot Suites (only) or LESSOR’S receipt of a monthly rental payment from any other tenant or occupant that leases all or a portion of the 12 Cabot Suites during the Relinquishment Period,
(i) LESSEE’S monthly relinquishment charge shall be reduced up to the corresponding monthly amount noted in the schedule above (e.g., if Zwitterco pays LESSOR a monthly rent amount for January 2022 that exceeds $62,334.25, then
LESSEE’S monthly relinquishment charge owed for January 2022 shall be zero and LESSEE shall not receive a credit for any such excess), (ii) however, if said monthly rental amount received by LESSOR is less than the monthly relinquishment charge
stated above, LESSEE shall pay to LESSOR the difference between said amounts within 30 days following receipt of LESSOR’S invoice therefor; provided, however, if any such deficiency is eventually collected from Zwitterco or any other tenant or
occupant of 12 Cabot Suites, then such deficiency amount paid by LESSEE shall be refunded. In the event that the Zwitterco Deposit, net of reasonable costs and expenses incurred by LESSOR in connection with the termination of the Zwitterco lease,
repairing any damages to the 12 Cabot Suites, certifying the space clean of chemicals and/or other contaminants as a result of Zwitterco’s use of the 12 Cabot Suites, and after deducting any unamortized brokerage fees and construction expenses
incurred by LESSOR, is applied by LESSOR to Zwitterco’s rental obligation for the 12 Cabot Suites during the Relinquishment Period, LESSOR will credit said net amount applied toward LESSEE’S relinquishment charge(s) owed. LESSOR’S
invoice shall provide an accounting of all monthly rental payments received from Zwitterco or any other tenant or occupant of the 12 Cabot Suites together with reasonable back-up documentation.

  

	7.	 At any time prior to the current expiration of the lease, provided LESSEE is not then in arrears of any rent or
invoice payment or otherwise in default of the lease, LESSOR agrees to use reasonable efforts to notify LESSEE of either LESSEE’S desire or Zwitterco’s desire to modify or amend the terms of the Zwitterco lease but only to the extent said
modifications or amendments would effect any reduction under Section 6 above to LESSEE’S relinquishment payments. 

 This
amendment shall not bind any party in any manner whatsoever until it has been executed by all parties. All other terms of the lease shall continue to apply, and to the extent any inconsistency exists between this amendment and the lease, the terms
herein shall control and supersede any earlier provisions. In witness whereof, LESSOR and LESSEE, intending to be legally bound, have caused this amendment to be executed this 30 day of December, 2021. 

 

									
	LESSOR: CUMMINGS PROPERTIES, LLC	 		 	LESSEE: SOLIDENERGV SYSTEMS, LLC
	By:	 	 /s/ E. Anderson
	 		 	By:	 	 /s/ Rohit Makharia

		 	Duly authorized	 		 		 	Duly authorized
		 		 	        	 	Print name:	 	Rohit Makharia
		 		 	Title:	 	President and COO

  

									
		 		 		 	LESSEE: SOLIDENERGV SYSTEMS SECURITIED CORPORAYION
		 		 		 	By:	 	 /s/ Rohit Makharia

		 		 		 		 	Duly authorized
		 		 		 	Print name:	 	Rohit Makharia
	09/2021	 		 		 	Title:	 	President and COO

  
 2EX-10.22

 Exhibit 10.22 

STANDARD FORM 

RESTRICTED SHARE AWARD 

Granted by 
 SES Holdings Pte.
Ltd. 
 Under the 2021 Share Incentive Plan 

This Restricted Share Award is and shall be subject in every respect to the provisions of the Company’s (as defined in the Plan) 2021
Share Incentive Plan, as amended from time to time (the “Plan”), which is incorporated herein by reference and made a part hereof. The holder of this Restricted Share Award (the “Holder”) hereby accepts this Restricted Share
Award subject to all the terms and provisions of the Plan and agrees that (a) in the event of any conflict between the terms hereof and those of the Plan, the latter shall prevail, and (b) all decisions under and interpretations of the
Plan by the Board or the Committee shall be final, binding and conclusive upon the Holder and his or her heirs and legal representatives. 
  

	1.	 Name of Holder: [    ] 

 

	2.	 Date of Grant: [    ] 

 

	3.	 Number of Restricted Shares granted under this Restricted Share Award: [    ]
ordinary shares in the capital of the Company. 

  

	4.	 Vesting Schedule: Subject to the Holder being in continued service with the Company at such time, 25% of
the shares granted shall vest on the first year anniversary of the date of grant, and following the first year anniversary of the date of grant, and additional 2.0833% of the shares granted shall vest on the last day of each one month period
thereafter; so that this Restricted Share Award shall be fully vested on the fourth anniversary of the date of grant. All vesting shall cease upon the date of cessation of service . For the purposes of this Restricted Share Award, the Holder shall
be deemed to have ceased to be providing services as of the date the notice of termination of service is tendered or given, unless such notice is withdrawn prior to its effective date. 

 

	5.	 Company’s Right of First Refusal. Prior to the effective date of a registration statement under the
US Securities Act, any shares issued pursuant to this Restricted Share Award shall be subject to the Company’s right of first refusal as set forth at Appendix A. 

 

	6.	 Lock-Up Agreement. The Holder agrees that upon the request of
the Company or the managing underwriter(s) of any offering of securities of the Company that is the subject of a registration statement filed under the US Securities Act, for a period of time (not to exceed one hundred and eighty (180) days,
plus such additional number of days (not to exceed thirty five (35)) as may reasonably be requested to enable the underwriter(s) of such offering to comply with Rule 2711(f) of the Financial Industry Regulatory Authority or any amendment or
successor thereto) from the effective date of the registration statement under the US Securities Act for such offering, the Holder will not sell, make any short sale of, loan, grant any option for the purchase of, or otherwise dispose of any Shares
of the Company owned or controlled by him or her, without the prior written consent of the Company and such underwriters. 

	7.	 Tax Withholding. The Company shall have the authority and right to deduct or withhold, or require the
Holder to remit to the Company, an amount sufficient to satisfy all applicable federal, state and local taxes required by law to be withheld with respect to any taxable event arising in connection with the shares granted under the Restricted Share
Award. The Company shall not be obligated to deliver any shares to the Holder unless and until the Holder shall have paid or otherwise satisfied in full the amount of all federal, state and local taxes applicable to the taxable income of the Holder
resulting from the grant or vesting of the shares or the issuance of the shares. 

  

	8.	 Requirements of Law. The Restricted Share Award and the obligation of the Company to deliver shares
hereunder shall be subject in all respects to (i) all applicable federal, state and local laws, rule, and regulations; and (ii) any registration, qualification, approvals or other requirements imposed by any government or regulatory agency
or body which the Company, in its discretion, determines to be necessary or applicable.. 

  

	9.	 Notice. Any notice to be given to the Company hereunder shall be deemed sufficient if addressed to the
Company and delivered to the office of the Company, SES Holdings Pte. Ltd., 1 Robinson Road, #18-00 AIA Tower, Singapore 048542, attention of the CEO of SES Holdings Pte. Ltd., or such other
address as the Company may hereafter designate. 

 Any notice to be given to the Holder hereunder shall be deemed
sufficient if addressed to and delivered in person to the Holder at his or her address furnished to the Company or when deposited in the mail, postage prepaid, addressed to the Holder at such address. 

IN WITNESS WHEREOF, the parties have executed this Restricted Share Award, or caused this Restricted Share Award to be executed, as of the
Date of Grant. 
  

			
	SES Holdings Pte. Ltd.
		
	By:	 	  

  
 2 

 The undersigned Holder hereby acknowledges receipt of a copy of the Plan and this Restricted Share Award
(including Appendix A hereto), and agrees to the terms of this Restricted Share Award and the Plan. 
  

	
	  

	Holder

  
 3 

 APPENDIX A 

Right of First Refusal 
 1.
General. Prior to the effective date of a registration statement under the Securities Act of 1933, as amended (the “US Securities Act”), covering any shares of the Company (“Shares”) and until such time as the Company
shall have effected a public offering of its Shares registered under the US Securities Act, in the event that, at any time when the Holder (which term for purposes of this section shall mean the Holder and his or her executors, administrators and
any other person to whom this Restricted Share Award may be transferred by will or the laws of descent and distribution) is permitted to do so, the Holder desires to sell, assign or otherwise transfer any of the shares issued pursuant to the
Restricted Share Award, the Holder shall first offer such shares to the Company by giving written notice of the Holder’s desire so to sell, assign or transfer such shares. 

2. Notice of Intended Transfer. The notice shall state the number of shares offered, the name of the person or persons to whom it is
proposed to sell, assign or transfer such shares and the price at which such shares are intended to be sold, assigned or transferred. Such notice shall constitute an offer to the Company for the Company to purchase the number of shares set forth in
the notice at a price per share equal to the price stated therein. 
 3. Company to Accept or Decline Within Thirty
(30) Days. The Company may accept the offer as to all, but not less than all, such shares by notifying the Holder in writing within thirty (30) days after receipt of such notice of its acceptance of the offer. If the
offer is accepted, the Company shall have sixty (60) days after such acceptance within which to purchase the offered shares at a price per share as aforesaid. If within the applicable time periods the Holder does not receive notice of the
Company’s intention to purchase the offered shares, or if payment in full of the purchase price is not made by the Company, the offer shall be deemed to have been rejected and the Holder may transfer title to such shares within ninety
(90) days from the date of the Holder’s written notice to the Company of the Holder’s intention to sell, but such transfer shall be made only to the proposed transferee and at the proposed price as stated in such notice and after
compliance with any other provisions of this Restricted Share Award applicable to the transfer of such shares. 
 4. Transferred Shares
to Remain Subject to Right of First Refusal. Shares that are so transferred to such transferee shall remain subject to the rights of the Company set forth in this Appendix A. As a condition to such transfer, such transferee shall execute and
deliver all such documents as the Company may require to evidence the binding agreement of such transferee so to remain subject to the rights of the Company. 

5. Remedies of Company. No sale, assignment, pledge or other transfer of any of the shares covered by this Restricted Share Award shall
be effective or given effect on the books of the Company unless all of the applicable provisions of this Appendix A have been duly complied with, and the Company may inscribe on the face of any certificate representing any of such shares a legend
referring to the provisions of this Appendix A. If any transfer of shares is made or attempted in violation of the foregoing restrictions, or if shares are not offered to the 

  
 4 

 
Company as required hereby, the Company shall have the right to purchase such shares from the owner thereof or his transferee at any time before or after the transfer, as herein provided. In
addition to any other legal or equitable remedies which it may have, the Company may enforce its rights by actions for specific performance (to the extent permitted by law) and may refuse to recognize any transferee as one of its shareholders for
any purpose, including, without limitation, for purposes of dividend and voting rights, until all applicable provisions hereof have been complied with. 

6. Shares Subject to Right of First Refusal. For purposes of the Right of First Refusal pursuant to this Appendix A, the term
“shares” shall mean any and all new, substituted or additional securities or other property issued to the Holder, by reason of his or her ownership of Shares issued pursuant to the Restricted Share Award, in connection with any share
dividend, liquidating dividend, share split or other change in the character or amount of any of the outstanding securities of the Company, or any consolidation, merger or sale of all or substantially all of the assets of the Company. 

7. Legends on Share Certificates. Any certificate representing shares subject to the provisions of this Appendix A may have endorsed
thereon one or more legends, substantially as follows: 
  

	 	(i)	 “Any disposition of any interest in the securities represented by this certificate is subject to
restrictions, and the securities represented by this certificate are subject to certain options, contained in a certain agreement between the record holder hereof and the Company, a copy of which will be mailed to any holder of this certificate
without charge upon receipt by the Company of a written request therefor.” 

  

	 	(ii)	 “The shares represented by this certificate have not been registered under the Securities Act of 1933 or
under the securities laws of any state and may not be pledged, hypothecated, sold or otherwise transferred unless such shares have been registered under the said Act or unless the Company has received an opinion of counsel satisfactory to the
Company, in form and substance satisfactory to the Company, that such registration is not required.” 

 8. Right
of First Refusal to Lapse Upon Registration. The restrictions imposed by this Appendix A shall terminate in all respects upon the effective date of a registration statement under the US Securities Act covering any of the Company’s Shares.

  
 5

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