Exhibit 4.1

   

  SPECIMEN UNIT CERTIFICATE 

  	
           

        	
           

        	
           

        
	
          NUMBER U–[ ]

        	
           

        	
          UNITS

        
	
           

        	
           

        
	
          SEE REVERSE FOR CERTAIN DEFINITIONS

        	
           

        	
          CUSIP G4365A 119

              

        


   

  HCM ACQUISITION CORP

   

  UNITS CONSISTING OF ONE CLASS A ORDINARY SHARE AND ONE-HALF OF ONE 

  REDEEMABLE WARRANT, EACH WHOLE WARRANT ENTITLING THE HOLDER TO PURCHASE 

  ONE CLASS A ORDINARY SHARE 

   

  THIS CERTIFIES THAT is the owner of Units.

   

  Each unit (“Unit”) consists of one (1) Class A ordinary share, par value $0.0001 per share (“Ordinary Shares”), of HCM
    Acquisition Corp, a Cayman Islands exempted company (the “Company”), and one-half (1/2) of one redeemable warrant (each whole warrant, a “Warrant”). Each Warrant entitles the holder to purchase one (1) Ordinary
    Share for $11.50 per share (subject to adjustment). Each whole Warrant will become exercisable on the later of (i) thirty (30) days after the Company’s completion of a merger, share exchange, asset acquisition, share purchase, reorganization or other
    similar business combination with one or more businesses (each, a “Business Combination”), and (ii) twelve (12) months from the closing of the Company’s initial public offering, and will expire unless exercised before 5:00 p.m.,
    New York City Time, on the date that is five (5) years after the date on which the Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration Date”). The Ordinary Shares and
    Warrants comprising the Units represented by this certificate are not transferable separately prior to July [ ], 2021, unless Cantor Fitzgerald & Co. elects to allow earlier separate trading, subject to the Company’s filing with the Securities and
    Exchange Commission of a Current Report on Form 8-K containing an audited balance sheet reflecting the Company’s receipt of the gross proceeds of the initial public offering and issuing a press release announcing when separate trading will begin. No
    fractional Warrants will be issued upon separation of the Units and only whole Warrants are exercisable. The terms of the Warrants are governed by the Warrant Agreement, dated as of July [ ], 2021 (as amended, supplemented or otherwise modified from
    time to time, the “Warrant Agreement”), 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 holder of the Warrants on
    written request and without cost.

   

  The Units represented by this certificate will automatically separate into the Class A Ordinary Shares and Warrants comprising such Units after completion of a
    Business Combination.

   

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

   

  This certificate shall be governed by and construed in accordance with the internal laws of the State of New York.

   

  Witness the facsimile signatures of its duly authorized officers.

   

  	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        
	
          By:

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        
	
           

        	
           

        	
          Chief Executive Officer

        	
           

        	
           

        	
           

        	
          Transfer Agent

        	
           

        


   

  
     

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  HCM ACQUISITION CORP

   

  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 shares 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

        
	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        
	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        	
          (Cust) (Minor)

        
	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        
	
          TEN 

            ENT

        	
           

        	
          —

        	
           

        	
          as tenants by the entireties

        	
           

        	
           

        	
           

        	
           

        	
           

        	
          under Uniform Gifts to Minors Act

        
	
           

        	
           

        	
           

        	
           

        	
           

        	
           

        
	
          JT TEN

        	
           

        	
          —

        	
           

        	
          as joint tenants with right of survivorship and not as tenants in common

        	
           

        	
           

        	
           

        	
           

        	
           

        	
          (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))

   

  Units represented by the within Certificate, and does 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(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.

        


   

  
     

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          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 UNDER THE SECURITIES

        
	
          EXCHANGE ACT OF 1934, AS AMENDED (OR ANY SUCCESSOR RULE).

        


   

  As more fully described in, and subject to the terms and conditions described in, the Company’s final prospectus for its initial public offering, dated [ ], 2021,
    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 the Company’s initial public offering only in the event that (i) the Company redeems the
    Ordinary Shares sold in its initial public offering and liquidates because it does not consummate an initial business combination within the period of time set forth in the Company’s amended and restated memorandum and articles of association (as the
    same may be further amended, supplemented or otherwise modified from time to time, the “amended and restated memorandum and articles of association”), (ii) the Company redeems the Ordinary Shares sold in its initial public offering
    in connection with a shareholder vote to amend the amended and restated memorandum and articles of association (A) that would modify the substance or timing of the Company’s obligation to provide holders of the Ordinary Shares the right to have their
    shares redeemed in connection with the Company’s initial business combination or to redeem 100% of the Ordinary Shares if the Company does not complete its initial business combination within the time period set forth therein or (B) with respect to any
    other provision relating to the rights of holders of the Ordinary Shares, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective Ordinary Shares in connection with a tender offer (or proxy solicitation, solely in the event the
    Company seeks shareholder 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.

   

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