Document:

Unassociated Document

    [SPECIMEN
      UNIT CERTIFICATE- Underwriter]

    

    
      	
              NUMBER

            	
              _______
                UNITS

            
	
              UU-_________

            	 

    

    

    ADVANCED
      TECHNOLOGY ACQUISITION CORP.

    Incorporated
      under the Laws of the State of Delaware

    SEE
      REVERSE FOR

    CERTAIN
      DEFINITIONS

    

    UNITS
      CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT TO PURCHASE ONE SHARE
      OF
      COMMON STOCK

    

    
      	
              THIS
                CERTIFIES THAT 

            	 
	
              
                
  

            
	
              is
                the owner of

              
                

              

            	
              Unit(s).

            

    

     

     

    Each
      Unit
      (“Unit”) consists of one (1) share of common stock, par value $.0001 per share
      (“Common Stock”), of Advanced Technology Acquisition Corp., a Delaware
      corporation (the “Company”), and one warrant (the “Warrant”). Each Warrant
      entitles the holder to purchase one (1) share of Common Stock for $6.00 per
      share (subject to adjustment). Each Warrant will become exercisable on the
      later
      of (i) the Company's completion of a merger, capital stock exchange, asset
      acquisition, stock purchase or other similar business combination or (ii)
      ___________, 2007, and will expire unless exercised before 5:00 p.m., New York
      City Time, on ____________, 2011, or earlier upon redemption (the “Expiration
      Date”). The Common Stock and Warrants comprising the Units represented by this
      certificate shall commence separate trading as promptly as practicable following
      the consummation of the Company’s initial public offering, but in no event later
      than 65 days following the consummation of the Company’s initial public
      offering. The terms of the Warrants are governed by a Warrant Agreement, dated
      as of _______, 2006, 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__________________, 
      _______________,
      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. 

    

    Dated:

    
      
        	 	 	 	 
	
                COUNTERSIGNED
                  AND REGISTERED 

                CONTINENTAL
                  STOCK TRANSFER & TRUST COMPANY 

                (New
                  York, NY)

              	 	 	
              
	 	 	 	 
	
              	 	 	CHAIRMAN OF THE BOARD 
	 	 	 	 
	BY:
                ___________________________________________________________ 	 	 	 
	 	 	 	 
	
                AUTHORIZED
                  OFFICER 

              	 	 	
                SECRETARY 

              

      

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    ADVANCED
      TECHNOLOGY ACQUISITION CORP.

    

    The
      Company will furnish without charge to each stockholder 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
      ALSO INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF
      ASSIGNEE)

    

    ___________________________________________________________________
      

    

    ___________________________________________________________________

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

    

    __________________________Units
      represented by the within Certificate, and do hereby irrevocably constitute
      and
      appoint______________________________ Attorney, 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) SHOULD 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).Unassociated Document

    [SPECIMEN
      WARRANT CERTIFICATE - Underwriter’s Warrants]

    

    (THIS
      WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO 5:00 P.M. NEW YORK CITY TIME,
      __________, 2011)

    

    ADVANCED
      TECHNOLOGY ACQUISITION CORP.

    WARRANT

    

    
      	 	
              [                   
                ] WARRANTS

            
	
              NUMBER

            	
              CUSIP
                [            
                 ]

            
	
              UW-________

            	
              SEE
                REVERSE SIDE FOR LEGEND

            

    

    

    THIS
      CERTIFIES THAT, for value received

    

    

    IS
      THE
      REGISTERED HOLDER OF 

    

    a
      Warrant
      or Warrants expiring ________, 2011 (the “Warrant”) to purchase one fully paid
      and non-assessable share of Common Stock, par value $.0001 per share (“Shares”),
      of ADVANCED TECHNOLOGY ACQUISITION CORP. a Delaware corporation (the “Company”),
      for each Warrant evidenced by this Warrant Certificate. The Warrant entitles
      the
      holder thereof to purchase from the Company, commencing on the later of (i)
      the
      Company’s completion of a merger, capital stock exchange, asset acquisition,
      stock purchase or other similar business combination and (ii) ______________,
      2007, such number of Shares of the Company at the price of $6.00 per share,
      upon
      surrender of this Warrant Certificate and payment of the Warrant Price at the
      office of the Warrant Agent, Continental Stock Transfer & Trust Company
      (such payment to be made by check made payable to the Warrant Agent), but only
      subject to the conditions set forth herein and in the Warrant Agreement between
      the Company and Continental Stock Transfer & Trust Company; provided that
      the exercisability of a Warrant may be limited pursuant to the terms set forth
      in the Warrant Agreement. The Company shall not be obligated to deliver any
      securities pursuant to the exercise of a Warrant and shall have no obligation
      to
      settle a Warrant exercise unless a registration statement under the Securities
      Act of 1933, as amended, (the “Act”) with respect to the Common Stock is
      effective, subject to the Company satisfying its obligations under Section
      7.4
      of the Warrant Agreement to use its best efforts. In the event that a
      registration statement with respect to the Common Stock underlying a Warrant
      is
      not effective under the Act, the holder of such Warrant shall not be entitled
      to
      exercise such Warrant and such Warrant may have no value and expire worthless.
      The Warrant Agreement provides that upon the occurrence of certain events the
      Warrant Price and the number of Warrant Shares purchasable hereunder, set forth
      on the face hereof, may, subject to certain conditions, be adjusted. The term
      Warrant Price as used in this Warrant Certificate refers to the price per Share
      at which Shares may be purchased at the time the Warrant is
      exercised.

    

    No
      fraction of a Share will be issued upon any exercise of a Warrant. If the holder
      of a Warrant would be entitled to receive a fraction of a Share upon any
      exercise of a Warrant, the Company shall, upon such exercise, round up to the
      nearest whole number the number of Shares to be issued to such holder.

    

    Upon
      any
      exercise of the Warrant for less than the total number of full Shares provided
      for herein, there shall be issued to the registered holder hereof or the
      registered holder’s assignee a new Warrant Certificate covering the number of
      Shares for which the Warrant has not been exercised.

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    Warrant
      Certificates, when surrendered at the office of the Warrant Agent by the
      registered holder hereof in person or by attorney duly authorized in writing,
      may be exchanged in the manner and subject to the limitations provided in the
      Warrant Agreement, but without payment of any service charge, for another
      Warrant Certificate or Warrant Certificates of like tenor and evidencing in
      the
      aggregate a like number of Warrants.

    

    Upon
      due
      presentment for registration of transfer of the Warrant Certificate at the
      office of the Warrant Agent, a new Warrant Certificate or Warrant Certificates
      of like tenor and evidencing in the aggregate a like number of Warrants shall
      be
      issued to the transferee in exchange for this Warrant Certificate, subject
      to
      the limitations provided in the Warrant Agreement, without charge except for
      any
      applicable tax or other governmental charge.

    

    The
      Company and the Warrant Agent may deem and treat the registered holder as the
      absolute owner of this Warrant Certificate (notwithstanding any notation of
      ownership or other writing hereon made by anyone), for the purpose of any
      exercise hereof, of any distribution to the registered holder, and for all
      other
      purposes, and neither the Company nor the Warrant Agent shall be affected by
      any
      notice to the contrary.

    

    This
      Warrant does not entitle the registered holder to any of the rights or
      privileges of a stockholder of the Company.

    

    The
      Company reserves the right to call the Warrant with a notice of call in writing
      to the holders of record of the Warrant, giving 30 days’ notice of such call at
      any time after the Warrant becomes exercisable if the last sale price of the
      Shares has been at least $11.50 per share for any 20 trading days within a
      30
      consecutive trading day period ending on the third business day prior to the
      date on which notice of such call is given. Notwithstanding anything contained
      herein to the contrary, the Company shall not call the Warrants for redemption
      unless there is an effective registration statement under the Act relating
      to
      the shares of Common Stock issuable upon exercise of the Warrants and a current
      prospectus is available. The call price of the Warrants is to be $.01 per
      Warrant. Any Warrant either not exercised or tendered back to the Company by
      the
      end of the date specified in the notice of call shall be canceled on the books
      of the Company and have no further value except for the $.01 call
      price.

    

    Dated

    
      
        	 	 	 	 
	
                COUNTERSIGNED
                  AND REGISTERED 

                CONTINENTAL
                  STOCK TRANSFER & TRUST COMPANY 

                (New
                  York, NY)

              	 	 	By: 
	 	 	 	 
	
                AS
                  WARRANT AGENT 

              	 	 	CHAIRMAN OF THE BOARD 
	 	 	 	 
	By 	 	 	 
	 	 	 	 
	
                AUTHORIZED
                  OFFICER 

              	 	 	
                SECRETARY 

              

      

       

       

      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    SUBSCRIPTION
      FORM

    

    To
      Be
      Executed by the Registered Holder in Order to Exercise Warrants

    

    The
      undersigned Registered Holder irrevocably elects to exercise ______________
      Warrants represented by this Warrant Certificate, and to purchase the shares
      of
      Common Stock issuable upon the exercise of such Warrants, and requests that
      Certificates for such shares shall be issued in the name of 

    ________________________________________________

    (PLEASE
      TYPE OR PRINT NAME AND ADDRESS)

    

    ________________________________________________

    

    ________________________________________________

    

    ________________________________________________

    (SOCIAL
      SECURITY OR TAX IDENTIFICATION NUMBER)

    

    and
      be
      delivered to

    

    ________________________________________________

    (PLEASE
      PRINT OR TYPE NAME AND ADDRESS)

    ________________________________________________

    

    ________________________________________________

    

    ________________________________________________

    

    and,
      if
      such number of Warrants shall not be all the Warrants evidenced by this Warrant
      Certificate, that a new Warrant Certificate for the balance of such Warrants
      be
      registered in the name of, and delivered to, the Registered Holder at the
      address stated below:

    

    Dated:

    ________________________________________________

    (SIGNATURE)

    

    ________________________________________________

    (ADDRESS)

    ________________________________________________

    

    ________________________________________________

    (TAX
      IDENTIFICATION NUMBER)

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    ASSIGNMENT

    To
      Be
      Executed by the Registered Holder in Order to Assign Warrants

    

    For
      Value
      Received, __________________ hereby sell, assign, and transfer unto

    

    ________________________________________________

    (PLEASE
      TYPE OR PRINT NAME AND ADDRESS)

    ________________________________________________

    

    ________________________________________________

    

    ________________________________________________

    

    ________________________________________________

    (SOCIAL
      SECURITY OR TAX IDENTIFICATION NUMBER)

    

    and
      be
      delivered to

    ________________________________________________

    (PLEASE
      PRINT OR TYPE NAME AND ADDRESS)

    

    ________________________________________________

    

    ______________________
      of the Warrants represented by this Warrant Certificate,

    and
      hereby irrevocably constitute and appoint _________________________________
      Attorney to transfer this Warrant Certificate on the books of the Company,
      with
      full power of substitution in the premises.

    

    Dated:

    ________________________________________________

    (SIGNATURE)

    

    THE
      SIGNATURE TO THE ASSIGNMENT OF THE SUBSCRIPTION FORM MUST CORRESPOND TO THE
      NAME
      WRITTEN UPON THE FACE OF THIS WARRANT CERTIFICATE IN EVERY PARTICULAR, WITHOUT
      ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE GUARANTEED
      BY A
      COMMERCIAL BANK OR TRUST COMPANY OR A MEMBER FIRM OF THE AMERICAN STOCK
      EXCHANGE, NEW YORK STOCK EXCHANGE, PACIFIC STOCK EXCHANGE OR CHICAGO STOCK
      EXCHANGE.

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