Document:

DEED OF AMENDMENT

Date:    
__9 December __2020

Between:

(1) Citibank Europe plc
(“Citibank”);

(2)
Everest Reinsurance (Bermuda) Limited; and

(3)
Everest Reinsurance (Bermuda) Limited UK Branch

(parties (2) and (3) together
know as the “Companies”).  

1. Background

1.1 On 31 December 2014 a
Committed Facility Letter for Issuance of Payment Instruments was signed
between Citibank and the Companies, as amended by Letters of Amendment dated 30th
November 2015, 30th December 2016, 29th December 2017 and
by Deeds of Amendment dated 10th December 2018 and 20th
December 2019, and as may be further amended, varied, suppliemented,
novated or assigned from time to time  (the “Committed
Facility Letter”).  

1.2 The Parties have agreed
certain amendments to the Committed Facility Letter as detailed in this deed.  

1.3 Terms and expressions
defined in the Committed Facility Letter shall have the same meanings when used
in this deed  unless the context otherwise requires or the contrary is
otherwise indicated. 

1.4 The parties to this deed 
hereby agree that from the Effective Date (as defined below) the rights and
obligations of the parties under the Committed Facility Letter and the terms of
the Committed Facility Letter shall be amended as specifically set out below.  

2. Effective Date

The following amendments shall
take effect on and from 31st December 2020 (“Effective Date”).
 

3. Amendments

With effect from the Effective
Date, the the following amendments shall be made to the Committed Facility
Letter:

(i)      Clause 2
of the Committed Facility Letter shall be amended and restated in its entirety
as follows:

“The Facility shall be in a maximum
aggregate amount of USD200,000,000.00 (the “Facility Limit”) comprising:

(1)  
Letters of Credit with a maximum tenor of
15 months inclusive of any notice period to the beneficiaries 

 

 

(2)  
Letters of Credit with a maximum tenor of
24 months inclusive of any notice period to the beneficiaries. 

(1) and (2) above, collectively “Standard
LCs”.

 

(3)   Letters
of Credit issued in respect of Funds at Lloyds obligations with a maximum tenor
of up to 60 months inclusive of any notice period to the beneficiaries (“FAL
LCs”).   The aggregate amount in respect of FAL LCs shall not exceed USD
150,000,000 and shall be made available jointly to the Companies.  

 

For
the avoidance of doubt, all or any part of the Facility shall be available to
either Company save that a utilisation by one Company shall reduce the
remaining availability for itself and the other Company. The aggregate of all
utilisations made by the Companies under the Facility shall not exceed the
Facility Limit.

 

No
credit will be issued under the Facility after 31st December, 2021 (the “Availability
End Date”) and no Credit will be issued under the Facility unless it is
expressed to expire no later than 31st December, 2025. (the “Facility Expiry
Date”).”  

 

4. Costs and expenses

Each party to this deed  shall
bear its own costs and expenses in relation to the amendments agreed pursuant
to the terms of this deed. 

5. Affirmation and acceptance

5.1 With effect from the
Effective Date, the terms and conditions of the Committed Facility Letter shall
be read and construed by reference to this deed and all references to the
Committed Facility Letter shall be deemed to incorporate the relevant
amendments contained within this deed and all references in the Committed
Facility Letter  to “this Committed Facility Letter” shall with effect from the
Effective Date be references to the Committed Facility Letter as amended by
this deed.

5.2 In the event of any conflict
between the terms of this deed and the Committed Facility Letter, the terms of
this deed shall prevail. 

5.3 For the avoidance of doubt,
except as amended by the terms of this deed, all of the terms and conditions of
the Committed Facility Letter shall continue to apply and remain in full force
and effect. 

5.5 The Companies shall, at the
request of Citibank, do all such acts necessary or desirable to give effect to
the amendments effected or to be effected pursuant to the terms of this deed. 

6. Continuation of Security

The
Companies confirm that, on and after the Effective Date:

(a) notwithstanding the
amendments made to the Committed Facility Letter pursuant to this deed, the
Pledge Agreement dated 07th April 2005, as amended on 15 March 2006,
10 March 2011, 14 November 2014 between Everest Reinsurance (Bermuda) Ltd and
Citibank (the “Pledge Agreement”) and any security granted under it
continues in full force and effect; and

     

b) such
Pledge Agreement and security extends to the Committed Facility Letter, as
amended pursuant to this deed.

7. Counterparts

This deed may be executed in
counterparts, each of which shall be deemed to be an original, and all such
counterparts taken together shall constitute one and the same agreement. This
amendment shall take effect as a deed notwithstanding it is signed under hand
by Citibank. 

8. Third party rights

No person shall have any right
to enforce any provision of this deed under the Contracts (Rights of Third
Parties) Act 1999. 

9. Governing law

This deed (and any
non-contractual obligation, dispute, controversy, proceedings or claim of
whatever nature arising out of it or in any way relating to this deed or its
formation) shall be governed by and construed in accordance with English law. 

[signature
pages follow]

Signatories to the deed of amendment

	
   

   

   

   

  EXECUTED AS A DEED BY OR ON BEHALF OF 

  Everest Reinsurance (Bermuda) Limited UK Branch

   

  and signed by the persons specified on the right 

  acting in accordance with the laws of United Kingdom,  

  under the authority of the Company 

  pursuant to a resolution of Everest Reinsurance
  (Bermuda) Limited UK Branch

  dated:  December 9, 2020:

   

   

   

   

   

   

   

   

   

  	
   

   

   

   

   

   

  Signed                      /S/ NIGEL EDWARDS
  SMITH

                                   

  Name                       Nigel Edwards-Smith__

   

  Title                         Chief Administrative
  Officer__

   

  Signed                      /S/ PAUL CLAYDEN

   

  Name                       Paul
  Clayden________

   

  Title                          
  Financial Comptroller_

   

   

   

   

  

 

	
   

   

   

  EXECUTED AS A DEED BY OR ON BEHALF OF 

  Everest Reinsurance (Bermuda) Limited 

   

  and signed by the persons specified on the right 

  acting in accordance with the laws of Bermuda,  

  under the authority of the Company 

  pursuant to a resolution of Everest Reinsurance
  (Bermuda) Limited

  dated:  December 9 2020:

   

   

   

   

  	
   

   

   

   

   

  Signed                      /S/ SANJOY MUKHERJEE

   

  Name                       Sanjoy Mukherjee

   

  Title                         Director

   

  Signed                      /S/ DAVID LAWLER

   

  Name                       David
  Lawler

   

  Title                          
  Chief Accountant

   

   

   

   

  

 

 

 

 

WE
HEREBY CONFIRM OUR ACCEPTANCE ON BEHALF OF CITIBANK:

 

By:           /S/ NIALL
TUCKEY

Name:   Niall Tuckey

Title:      DirectorExhibit 4.1

 

NUMBER U-

 

SEE REVERSE FOR CERTAIN DEFINITIONS

 

CUSIP 039562 202

 

ARCHIMEDES
TECH SPAC PARTNERS CO.

 

UNITS CONSISTING OF (I) ONE SUBUNIT,
CONSISTING OF ONE SHARE OF COMMON STOCK

AND ONE-QUARTER OF ONE REDEEMABLE WARRANT,

AND (II) ONE-QUARTER OF ONE REDEEMABLE
WARRANT,

EACH WHOLE WARRANT ENTITLING THE HOLDER
TO PURCHASE ONE SHARE OF COMMON STOCK

 

	 	THIS CERTIFIES THAT	is
the owner of	Units.

 

Each Unit (“Unit”)
consists of (i) one (1) subunit (“Subunits”), consisting of one share of common stock, par value $0.0001 per share
(“Common Stock”), of Archimedes Tech SPAC Partners Co., a Delaware corporation (the “Company”),
and one-quarter of one (1) warrant (“Warrant”), and (ii) one-quarter of one (1) Warrant. Each whole Warrant
entitles the holder to purchase one share of Common Stock for $11.50 per share (subject to adjustment). Each whole Warrant will
become exercisable 30 days after the Company’s completion of an initial merger, capital stock exchange, asset acquisition,
or other similar business combination with one or more businesses or entities (a “Business Combination”), and
will expire unless exercised before 5:00 p.m., New York City Time, on the fifth anniversary of the completion of an initial Business
Combination, or earlier upon redemption or liquidation. The Subunit(s) and Warrant(s) comprising the Unit(s) represented by this
certificate are not transferable separately until ninety days following the Company’s initial public offering, unless EarlyBirdCapital,
Inc. informs the Company of its decision to allow earlier separate trading, except that in no event will the Common Stock and Warrants
be separately tradeable until the Company has filed an audited balance sheet reflecting the Company’s receipt of the gross
proceeds of its initial public offering and issued a press release announcing when such separate trading will begin. The terms
of the Warrants are governed by a Warrant Agreement, dated as of ___________, 2021, between the Company and Continental Stock Transfer
& Trust Company, as Warrant Agent, and are subject to the terms and provisions contained therein, all of which terms and provisions
the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement are on file at the office of the
Warrant Agent at 1 State Street, 30th Floor, New York, New York 10004, and are available to any Warrant holder on written request
and without cost.

 

This certificate is
not valid unless countersigned by the Transfer Agent and Registrar of the Company. Witness the facsimile seal of the Company and
the facsimile signatures of its duly authorized officers.

 

	 	 	 
	Chief Executive Officer	 	Secretary

 

Archimedes Tech SPAC Partners Co.

 

The Company will furnish
without charge to each unitholder who so requests, a statement of the powers, designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof of the Company and the qualifications, limitations, or
restrictions of such preferences and/or rights.

 

    

    

    

 

The following abbreviations,
when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according
to applicable laws or regulations:

 

	TEN COM	 	—   	as tenants in common	 	UNIF GIFT MIN ACT —	           Custodian         
	TEN ENT	 	—	as tenants by the entireties	 	 	(Cust)                  (Minor)
	JT TEN	 	—	as joint tenants with right of survivorship and not as tenants in common	 	 	

                     

                    
under Uniform Gifts to Minors
	 	 	 	 	 	 	Act	 
	 	 	 	 	 	 	 	(State)

 

Additional abbreviations may also be used though not in the
above list.

 

For value received,___________hereby sell, assign and transfer
unto___________

 

PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF
ASSIGNEE

 

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS,
INCLUDING ZIP CODE, OF ASSIGNEE)

  

___________________represented by the within Certificate,
and do hereby irrevocably constitute and appoint

 

__________________to transfer the said Units on the books of
the within named Company with full power of substitution in the premises.

 

Dated: _________________________ 

  

	 	 
	 	Notice:The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

 

Signature(s) Guaranteed:

 

	 	 
	THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE).	 

 

The holder(s) of this certificate shall
be entitled to receive a pro-rata portion of the funds from the trust account with respect to the Subunits underlying this certificate
only in the event that (i) the Corporation is forced to liquidate because it does not consummate an initial business combination
within the period of time set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may
be amended from time to time (the “Charter”) or (ii) if the holder seeks to convert his subunits upon consummation
of, or sell his subunits in a tender offer in connection with, an initial business combination or in connection with certain amendments
to the Charter. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust account
with respect to the subunit underlying the unit.

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