Document:

Exhibit 4.2

    

    

    	
            NUMBER

          	
            NUMBER

          
	 	
            C-

          
	 	
            SHARES

          
	 	
            SEE REVERSE FOR CERTAIN DEFINITIONS

          
	 	
            CUSIP C-00165R 101

          

    
      

      

    

    
      AMCI ACQUISITION CORP.

    

    
      

      

    

    
      INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

      CLASS A COMMON STOCK

    

    
      

      

      This Certifies that

      

      

      is the owner of

      

      

      FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE CLASS A COMMON STOCK OF

      

      

    

    
      AMCI ACQUISITION CORP.

      

      

      (THE “COMPANY”)

    

    
      

      

      transferable on the books of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

      

      

      The Company will be forced to redeem all of its shares of Class A common stock if it is unable to complete a business combination by                      ,
          2020, all as more fully described in the Company’s final prospectus dated                        , 2018.

      

      

      This certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar.

      

      

      Witness the seal of the Company and the facsimile signatures of its duly authorized officers.

      

      

    

    	
            Chief Executive Officer

          	
            [Corporate Seal] Delaware

          	
            Chief Financial Officer

          
	 	 	 

    

    

    
      
        

    

    

    

    
      AMCI ACQUISITION CORP.

    

    
      

      

      The Company will furnish without charge to each stockholder who so requests 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. This certificate and the shares represented thereby are issued and shall be held
          subject to all the provisions of the Company’s amended and restated certificate of incorporation and all amendments thereto and resolutions of the Board of Directors providing for the issue of securities (copies of which may be obtained from the
          secretary of the Company), to all of which the holder of this certificate by acceptance hereof assents. 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 sells, assigns and transfers unto

      

      

    

    
      (PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))

    

    
      

      

    

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

    

    
      

      

      shares of the capital stock represented by the within Certificate, and hereby irrevocably constitutes and appoints

      

      

      Attorney to transfer the said stock on the books of the within named Company with full power of substitution in the premises.

      

      

    

    	
            Dated:

          	 
	 

    
      

      

    

    	 

    
      NOTICE: THE SIGNATURE(S) 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:

          	 
	
            By

          	 
	 

    

    

    	 

    
      

      

      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).

      

      

      In each case, as more fully described in the Company’s final prospectus dated                   , 2018, the holder(s) of this certificate shall be entitled
          to receive a pro-rata portion of certain funds held in the trust account established in connection with its initial public offering only in the event that (i) the Company redeems the shares of Class A common stock sold in the Company’s initial
          public offering and liquidates because it does not consummate an initial business combination by                   , 2020, (ii) the Company redeems the shares of Class A common stock sold in its initial public offering in connection with a
          stockholder vote to amend the Company’s amended and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of the Class A common stock if it does not consummate an initial business
          combination by                   , 2020, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of Class A common stock in connection with a tender offer (or proxy solicitation, solely in the event the Company
          seeks stockholder approval of the proposed initial business combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust
          account.Exhibit 4.3

    

    

    [Form of Warrant Certificate]

    

    

    [FACE]

    

    

    Number

    

    

    Warrants

    

    

     

    

    

    

    THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO

    THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

    IN THE WARRANT AGREEMENT DESCRIBED BELOW

    

    

    AMCI ACQUISITION CORP.

    Incorporated Under the Laws of the State of Delaware

    

    

    CUSIP 00165R 119

    

    

    Warrant Certificate

    

    

    This Warrant Certificate certifies that                    , or registered assigns,
        is the registered holder of warrant(s) evidenced hereby (the “Warrants” and each, a “Warrant”) to purchase shares of Class A common stock, $0.0001 par value per share (“Common Stock”), of AMCI Acquisition Corp., a Delaware corporation (the “Company”). Each Warrant entitles the holder, upon exercise during the period set forth in the Warrant Agreement referred to below, to receive from the Company that number of fully paid and non-assessable shares
        of Common Stock as set forth below, at the exercise price (the “Exercise Price”) as determined pursuant to the Warrant Agreement, payable in lawful money (or through “cashless exercise” as provided for in the Warrant Agreement) of the United States of America upon surrender of this Warrant Certificate and payment of
        the Exercise Price at the office or agency of the Warrant Agent referred to below, subject to the conditions set forth herein and in the Warrant Agreement. Defined terms used in this Warrant Certificate but not defined herein shall have the
        meanings given to them in the Warrant Agreement.

    

    

    Each Warrant is initially exercisable for one fully paid and non-assessable share of Common Stock. No fractional shares will be issued
        upon exercise of any Warrant. If, upon the exercise of Warrants, a holder would be entitled to receive a fractional interest in a share of Common Stock, the Company will, upon exercise, round down to the nearest whole number the number of shares of
        Common Stock to be issued to the Warrant holder. The number of shares of Common Stock issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events set forth in the Warrant Agreement.

    

    

    The initial Exercise Price per share of Common Stock for any Warrant is equal to $11.50 per share. The Exercise Price is subject to
        adjustment upon the occurrence of certain events set forth in the Warrant Agreement.

    

    

    Subject to the conditions set forth in the Warrant Agreement, the Warrants may be exercised only during the Exercise Period and to the
        extent not exercised by the end of such Exercise Period, such Warrants shall become void.

    
      
        

    

    Reference is hereby made to the further provisions of this Warrant Certificate set forth on the reverse hereof and such further
        provisions shall for all purposes have the same effect as though fully set forth at this place.

    

    

    This Warrant Certificate shall not be valid unless countersigned by the Warrant Agent, as such term is used in the Warrant Agreement.

    

    

    This Warrant Certificate shall be governed by and construed in accordance with the internal laws of the State of New York, without regard
        to conflicts of laws principles thereof.

    

    

    	 	
            AMCI ACQUISITION CORP.

          
	
            By: __

          	 	 
	
            Name:

          	 	 
	
            Title:

          	 	 
	 	
            CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Warrant Agent

          
	 	 
	 	
            By:

          	 
	 	
            Name:

          	 
	 	
            Title:

          	 

    

    

    [Form of Warrant Certificate]

    

    

    [Reverse]

    

    

    The Warrants evidenced by this Warrant Certificate are part of a duly authorized issue of Warrants entitling the holder on exercise to
        receive shares of Common Stock and are issued or to be issued pursuant to a Warrant Agreement dated as of                 , 2018 (the “Warrant Agreement”), duly executed and delivered by the Company to Continental Stock Transfer & Trust Company, a New York corporation, as warrant
        agent (the “Warrant Agent”),
        which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is hereby referred to for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Warrant Agent,
        the Company and the holders (the words “holders” or “holder” meaning the Registered Holders or Registered Holder, respectively) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof upon written request to the Company. Defined terms used
        in this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement.

    
      
        

    

    Warrants may be exercised at any time during the Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by
        this Warrant Certificate may exercise them by surrendering this Warrant Certificate, with the form of election to purchase set forth hereon properly completed and executed, together with payment of the Exercise Price as specified in the Warrant
        Agreement (or through “cashless exercise” as provided for in the Warrant Agreement) at the principal corporate trust office of the Warrant Agent. In the event that upon any exercise of Warrants evidenced hereby the number of Warrants exercised
        shall be less than the total number of Warrants evidenced hereby, there shall be issued to the holder hereof or his, her or its assignee, a new Warrant Certificate evidencing the number of Warrants not exercised.

    

    

    Notwithstanding anything else in this Warrant Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of
        exercise (i) a registration statement covering the shares of Common Stock to be issued upon exercise is effective under the Securities Act and (ii) a prospectus thereunder relating to the shares of Common Stock is current, except through “cashless
        exercise” as provided for in the Warrant Agreement.

    

    

    The Warrant Agreement provides that upon the occurrence of certain events the number of shares of Common Stock issuable upon exercise of
        the Warrants set forth on the face hereof may, subject to certain conditions, be adjusted. If, upon exercise of a Warrant, the holder thereof would be entitled to receive a fractional interest in a share of Common Stock, the Company shall, upon
        exercise, round down to the nearest whole number of shares of Common Stock to be issued to the holder of the Warrant.

    

    

    Warrant Certificates, when surrendered at the principal corporate trust office of the Warrant Agent by the Registered Holder thereof in
        person or by legal representative or 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 evidencing in the aggregate a like number of Warrants.

    

    

    Upon due presentation for registration of transfer of this 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(s) in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement,
        without charge except for any tax or other governmental charge imposed in connection therewith.

    

    

    The Company and the Warrant Agent may deem and treat the Registered Holder(s) hereof as the absolute owner(s) 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 holder(s) hereof, and for all other purposes, and neither the Company nor the Warrant Agent shall
        be affected by any notice to the contrary. Neither the Warrants nor this Warrant Certificate entitles any holder hereof to any rights of a stockholder of the Company.

    

    

    Election to Purchase

    

    

    (To Be Executed Upon Exercise of Warrant)

    
      
        

    

    The undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive                 
        shares of Common Stock and herewith tenders payment for such shares of Common Stock to the order of AMCI Acquisition Corp. (the “Company”) in the amount of $ 
               in accordance with the terms hereof. The undersigned requests that a certificate for such shares of Common Stock be registered in the name of                 , whose address is                  and that such shares of Common Stock be
        delivered to                                   whose address is                 . If said number of shares of Common Stock is less than all of the shares of Common Stock purchasable hereunder, the undersigned requests that a new Warrant Certificate
        representing the remaining balance of such shares of Common Stock be registered in the name of                 , whose address is                          and that such Warrant Certificate be delivered to                 , whose address is         
               .

    

    

    In the event that the Warrant has been called for redemption by the Company pursuant to Section 6 of the Warrant Agreement and the Company has required cashless exercise pursuant to Section 6.3 of the Warrant Agreement,
        the number of shares of Common Stock that this Warrant is exercisable for shall be determined in accordance with subsection 3.3.1(b) and Section 6.3 of the Warrant Agreement.

    

    

    In the event that the Warrant is a Private Placement Warrant, Working Capital Warrant, Forward Purchase Warrant or Post IPO Warrant that
        is to be exercised on a “cashless” basis pursuant to subsection 3.3.1(c) of the Warrant Agreement, the number of shares of Common Stock that this Warrant is exercisable
        for shall be determined in accordance with subsection 3.3.1(c) of the Warrant Agreement.

    

    

    In the event that the Warrant is to be exercised on a “cashless” basis pursuant to Section 7.4 of the Warrant Agreement, the number of shares of Common Stock that this Warrant is exercisable for shall be determined in accordance with Section

            7.4 of the Warrant Agreement.

    

    

    In the event that the Warrant may be exercised, to the extent allowed by the Warrant Agreement, through cashless exercise (i) the number
        of shares of Common Stock that this Warrant is exercisable for would be determined in accordance with the relevant section of the Warrant Agreement which allows for such cashless exercise and (ii) the holder hereof shall complete the following: The
        undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, through the cashless exercise provisions of the Warrant Agreement, to receive shares of Common Stock. If said number of shares of Common Stock is
        less than all of the shares of Common Stock purchasable hereunder (after giving effect to the cashless exercise), the undersigned requests that a new Warrant Certificate representing the remaining balance of such shares of Common Stock be
        registered in the name of                 , whose address is                          and that such Warrant Certificate be delivered to                 , whose address is                 .

    

    

    [Signature Page Follows]

    
      
        

    

    

    

    	
            Date:                , 20

          	 
	 	
            (Signature)

          
	 	 
	 	 
	 	 
	 	 
	 	
            (Address)

          
	 	 
	 	 
	 	
            (Tax Identification Number)

          
	
            Signature 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 (OR ANY SUCCESSOR RULE)).

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