EX-4.2





 Exhibit 4.2 

THIS WARRANT AND THE SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT HAVE BEEN ACQUIRED FOR INVESTMENT PURPOSES ONLY AND MAY NOT BE TRANSFERRED UNTIL (i) A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “1933 ACT”) SHALL HAVE BECOME EFFECTIVE WITH RESPECT THERETO OR (ii) RECEIPT BY THE COMPANY OF AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
COMPANY TO THE EFFECT THAT REGISTRATION UNDER THE 1933 ACT IS NOT REQUIRED IN CONNECTION WITH SUCH PROPOSED TRANSFER NOR IS SUCH TRANSFER IN VIOLATION OF ANY APPLICABLE STATE SECURITIES LAWS. THIS LEGEND SHALL BE ENDORSED UPON ANY WARRANT ISSUED IN
EXCHANGE FOR THIS WARRANT OR ANY SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT. 
 WARRANT TO PURCHASE 

SHARES OF COMMON STOCK 

OF 
 DMB ACQUISITION
CORP. 
 [            ] 2021 

W-[__] 
 This is to Certify That, FOR VALUE
RECEIVED, LIFESCI HOLDINGS LLC, or his, her or its assigns (“Holder”), is entitled to purchase, subject to the provisions of this Warrant, from DMB ACQUISITION CORP., Delaware corporation (the “Company”), 3,000,000
fully paid, validly issued and nonassessable shares of the Company’s common stock, par value $0.0001 per share (the “Shares”) at a price of $11.50 per share. The number of Shares to be received upon the exercise of this Warrant
and the price to be paid for each Share may be adjusted from time to time as hereinafter set forth. The Shares deliverable upon such exercise, as adjusted from time to time, are hereinafter sometimes referred to as “Warrant Shares,”
and the exercise price for a Share in effect at any time, as adjusted from time to time, is hereinafter sometimes referred to as the “Exercise Price.” 

(a) LOCK UP OF WARRANT. The Holder acknowledges and agrees that the Warrants and the Warrant Shares will be deemed compensation by the
Financial Industry Regulatory Authority (“FINRA”) and will therefore, pursuant to FINRA Rule 5110(e), be subject to lock-up for a period of 180 days immediately following the effective date of the Registration Statement on Form S-1 (No.
333-258284) as filed with the Securities Exchange Commission, subject to FINRA Rule 5110(e)(2)(B). The Warrants and Warrant Shares may not be sold, transferred, assigned, pledged or hypothecated or be the subject of any hedging, short sale,
derivative, put or call transaction that would result in the economic disposition of such securities by any person during the foregoing 180 day period following the effective date of the Registration Statement except to any underwriter or selected
dealer participating in the offering and the officers or partners, registered persons or affiliates of the undersigned and of any such participating underwriter or selected dealer. 

(b) EXERCISE OF WARRANT. This Warrant may be exercised in whole or in part at any time on the later of (i) 30 days after the consummation by
the Company of its initial merger, share exchange, asset acquisition, share purchase, reorganization or other similar business combination with one or more businesses or entities (the “Business Combination”) (as described more fully
in the Registration Statement or (ii) 12 months from the closing of the public offering of the Company’s Shares, and terminating at 5:00 p.m., New York City time five years from the effective date of the Registration Statement (the
“Expiration Date”). Each Warrant not exercised on or before the Expiration Date shall become void, and all rights thereunder and all rights in respect thereof under this Agreement shall cease at the close of business on the
Expiration Date. 












 (1) This Warrant may be exercised by presentation and surrender hereof to the Company at its
principal office with the Purchase Form annexed hereto (the “Purchase Form”) duly executed and accompanied by payment of the Exercise Price for the number of Warrant Shares specified in such Purchase Form (which may take the form of
a “cashless exercise” pursuant to Section (a)(2) if so indicated in the Purchase Form). 
 (2) The Holder shall pay the
Exercise Price in immediately available funds; provided, however, that the Holder may, in the Holder’s sole discretion, satisfy its obligation to pay the Exercise Price through a “cashless exercise”, in which event the Company shall
issue to the Holder the number of Warrant Shares determined as follows: 
 X = Y(A-B)/A 

where 
 X = the number of Warrant
Shares to be issued to the Holder. 
 Y = the total number of Warrant Shares with respect to which this Warrant is being exercised. 

A = the Fair Market Value (as defined below) of one Share on the trading day immediately preceding the date on which Holder elects to exercise
this Warrant by means of a “cashless exercise.” 
 B = the Exercise Price then in effect for the applicable Warrant Shares at the
time of such exercise. 
 For purposes of this Warrant, “Fair Market Value” means, for any security as of any date, the price determined by the
first of the following clauses that applies: (a) if the Shares are then listed on a national securities exchange, the daily volume weighted average price of the Shares for such date (or the nearest preceding date) on the trading market on which
the Shares are then listed as reported by Bloomberg L.P. (based on a Trading Day from 9:30 a.m. (New York City time) to 4:00 p.m. (New York City time)), (b) if the Shares are quoted on the OTC Bulletin Board or the OTC Market, the average
closing bid price on such market for the five most recently completed trading days, (c) if paragraphs (a) or (b) are not applicable, if an appraiser hired by the Company has provided a report on the fair market value of a Share within the 12-month period preceding the date on which Holder elects to exercise this Warrant by means of a “cashless exercise,” the fair market value of a share of Shares as determined by such appraiser, or
(d) if none of the foregoing is applicable, the price determined by the Board of Directors of the Company in good faith. 
 (c)
EFFECTIVE TIME OF EXERCISE. Each exercise of this Warrant shall be deemed to have been effected immediately prior to the close of business on the day on which the Purchase Form has been delivered to the Company (the “Exercise Date”)
as provided in Section (a). At such time, the person or persons in whose name or names any certificates for Warrant Shares shall be issuable upon such exercise as provided in Section (c) below shall be deemed to


  
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have become the holder or holders of record of the Warrant Shares represented by such certificates. Notwithstanding the foregoing, if the Holder or any assignee does not enter into the
Shareholders’ Agreement within three (3) business days of being requested to do so by the Company, then the exercise of this Warrant will be deemed to not have been effective and void ab initio and the Holder or any assignee shall return
any securities received by them pursuant to Section (c) to the Company. 
 (d) DELIVERY TO HOLDER. 

(1) As soon as practicable after the exercise of this Warrant in whole or in part, and in any event within five (5) business days
thereafter, the Company will cause to be issued in the name of, and delivered to, the Holder, or as such Holder (upon payment by such Holder of any applicable transfer taxes) may direct: 

(A) a certificate or certificates for the number of Warrant Shares to which such Holder shall be entitled, and 

(B) in case such exercise is in part only, a new warrant or warrants of like tenor, exercisable for in the aggregate the number of Shares
equal (giving effect to any adjustment therein) to the number of Shares called for on the face of this Warrant minus the number of such shares purchased by the Holder upon such exercise. 

(2) To the extent permitted by law and except as provided in this Warrant, the Company’s obligations to issue and deliver Warrant Shares
in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any person
or entity or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other person or entity of any obligation to the Company or any violation or alleged
violation of law by the Holder or any other person or entity, and irrespective of any other circumstance that might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall
limit the Holder’s right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company’s failure to timely
deliver certificates representing Warrant Shares upon exercise of the Warrant as required pursuant to the terms hereof. 
 (e) RESERVATION OF
SHARES. The Company shall at all times reserve for issuance and/or delivery upon exercise of this Warrant such number of Shares (as adjusted pursuant to the terms hereof) as shall be required for issuance and delivery upon exercise of this Warrant.
The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and
nonassessable. The Company will take all such action as may be reasonably necessary to assure that such Warrant Shares may be issued as provided herein without violation of any applicable law or regulation, or of any requirements of any securities
exchange or automated quotation system upon which the Shares may be listed. 

  
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 (f) FRACTIONAL SHARES. No fractional shares or scrips representing fractional shares shall
be issued upon the exercise of this Warrant. With respect to any fraction of a share called for upon any exercise hereof, the Company shall pay to the Holder an amount in cash equal to such fraction multiplied by the fair market value of a Share.

 (g) LOSS OR DESTRUCTION OF WARRANT. Upon receipt by the Company of evidence satisfactory to it of the loss, theft, destruction or
mutilation of this Warrant, and (in the case of loss, theft or destruction) of reasonably satisfactory indemnification, and upon surrender and cancellation of this Warrant, if mutilated, the Company will execute and deliver a new Warrant of like
tenor and date. 
 (h) RIGHTS OF THE HOLDER. The Holder shall not, by virtue hereof, be entitled to any rights of a shareholder in the
Company, either at law or equity, and the rights of the Holder are limited to those expressed in this Warrant and are not enforceable against the Company except to the extent set forth herein. 

(i) CERTAIN ADJUSTMENTS. The Exercise Price and number of Warrant Shares issuable upon exercise of this Warrant are subject to adjustment from
time to time as set forth in this Section (h). 
 (1) Share Capitalizations and Sub-Divisions.
If the Company, at any time while this Warrant is outstanding, (i) declares a share capitalization on its Shares or otherwise makes a distribution on any class of shares that is payable in Shares, (ii) subdivides its outstanding Shares
into a larger number of shares, or (iii) combines its outstanding Shares into a smaller number of shares, then, in each such case, the Exercise Price shall be multiplied by a fraction, the numerator of which shall be the number Shares
outstanding immediately before such event and the denominator of which shall be the number of Shares outstanding immediately after such event. Any adjustment made pursuant to this Section (h)(1) shall become effective immediately after the
record date for the determination of shareholders entitled to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this Section (h)(1) shall become effective immediately after the effective date
of such subdivision or combination. 
 (2) Number of Warrant Shares. Simultaneously with any adjustment to the Exercise Price pursuant to
Section (h)(1), the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the increased
or decreased number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. 

(3) Fundamental Transactions. If, at any time while this Warrant is outstanding (i) the Company effects any merger or consolidation of the
Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets or a majority of its Shares is acquired by a third party, in each case, in one or a series of related transactions, (iii) any
tender offer or exchange offer (whether by the Company or a third party that is conducting such an offer pursuant to an agreement or arrangement with the Company) is completed pursuant to which all or substantially all of the holders of Shares are
permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reorganization or reclassification of Shares or any compulsory share exchange pursuant to


  
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which the Shares are effectively converted into or exchanged for other securities, cash or property (other than as a result of a subdivision or combination of Shares covered by Section
(h)(1) above) (in any such case, a “Fundamental Transaction”), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have
been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant without
regard to any limitations on exercise contained herein (the “Alternate Consideration”). The Company shall not effect any such Fundamental Transaction unless prior to or simultaneously with the consummation thereof, any successor to
the Company, surviving entity or the corporation purchasing or otherwise acquiring such assets or other appropriate corporation or Person shall assume the obligation to deliver to the Holder, such Alternate Consideration as, in accordance with the
foregoing provisions, the Holder may be entitled to receive, and the other obligations under this Warrant. The provisions of this Section (h)(3) shall similarly apply to subsequent transactions analogous of a Fundamental Transaction type.

 (4) Notice of Adjustments. Upon the occurrence of each adjustment pursuant to this Section (h), the Company at its expense will, at
the written request of the Holder, promptly compute such adjustment, in good faith, in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and
adjusted number or type of Warrant Shares or other property issuable upon exercise of this Warrant (as applicable), describing the transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon
written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company’s transfer agent. 

(5) Notices To Warrant Holders. So long as this Warrant shall be outstanding, (i) if the Company shall pay any dividend or make any
distribution of securities or other property (other than cash) in respect of its Shares or (ii) if the Company shall offer to the holders of Shares for subscription or purchase by them any share of any class or any other rights or (iii) if
any capital reorganization of the Company, reclassification of the shares of the Company, consolidation or merger of the Company with or into another corporation, sale, lease or transfer of all or substantially all of the property and assets of the
Company to another corporation, if the Company authorizes or approves, enters into any agreement contemplating or solicits shareholder approval for any Fundamental Transaction (each as defined below) , or voluntary or involuntary dissolution,
liquidation or winding up of the Company shall be effected, then in any such case, the Company shall cause to be mailed to the Holder, at least fifteen days prior the date specified in (x) or (y) below, as the case may be, a notice
containing a brief description of the proposed action and stating the date on which (x) a record is to be taken for the purpose of such dividend, distribution or rights, or (y) such reclassification, reorganization, consolidation, merger,
conveyance, lease, Fundamental Transaction, sales or issuances, dissolution, liquidation or winding up is to take place and the date, if any is to be fixed, as of which the holders of Shares or other securities shall receive cash or other property
deliverable upon such reclassification, reorganization, consolidation, merger, conveyance, lease, Fundamental Transaction, sales or issuances, dissolution, liquidation or winding up. 

  
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 (j) NOTICES. Any notice or request hereunder shall be in writing and may be given only by,
and shall be deemed to have been received upon: (a) registered or certified mail, return receipt requested, on the date on which such notice or request is received as indicated in such return receipt; (b) delivery by a nationally
recognized overnight courier, one business day after deposit with such courier; or (c) facsimile or other electronic transmission upon telephone or further electronic communication from the recipient acknowledging receipt (whether automatic or
manual from recipient) of such facsimile or other electronic transmission. In the case of the Company, such notices and communications shall be addressed to LifeSci Acquisition III Corp., 250 W. 55th St., #3401, New York, NY 10019, Attn: Andrew
McDonald, Chief Executive Officer, unless the Company shall notify the Holder that notices and communications should be sent to a different address (or facsimile number or electronic mail address), in which case such notices and communications shall
be sent to the address (or facsimile number or electronic mail address) specified by the Company. In the case of the Holder, such notices and communications shall be addressed to its address as set forth in the signature page hereto, unless the
Holder shall notify the Company that notices and communications should be sent to a different address (or facsimile number or electronic mail address), in which case such notices and communications shall be sent to the address (or facsimile number
or electronic mail address) specified by the Holder. 
 (k) NO NET-CASH SETTLEMENT. Except as
otherwise provided herein, in no event will the Holder be entitled to receive a net-cash settlement or other consideration in lieu of physical settlement in securities. 

(l) MODIFICATION OF AGREEMENT. The provisions of this Warrant may from time to time be amended, modified or waived, by the Company and the
holder of this Warrant. 
 (m) CHARGES, TAXES AND EXPENSES. Issuance and delivery of a reasonable number of certificates representing Shares
upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be
paid by the Company; provided, however, that the Company shall not be required to pay any tax that may be payable in respect of any transfer involved in the registration of any certificates for Warrant Shares or the Warrants in a name other than
that of the Holder or an affiliate thereof. The Holder shall be responsible for all other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 

(n) SUCCESSORS AND ASSIGNS. This Warrant and the rights of the Holder hereunder may not be transferred and/or assigned by the Holder in any way
whatsoever, and no transaction in respect thereof shall be made, either for consideration or for no consideration. This Warrant may not be assigned by the Company without the written consent of the Holder except to a successor in the event of a
Fundamental Transaction. This Warrant shall be binding on and inure to the benefit of the parties hereto and the Company’s successors. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any person or entity
other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder, or the Company’s successors. 

(o) GOVERNING LAW. 
 THIS WARRANT
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 

  
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 ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS WARRANT SHALL BE BROUGHT IN THE COURTS
OF THE STATE OF NEW YORK OR OF THE UNITED STATES OF AMERICA FOR THE SOUTHERN DISTRICT OF NEW YORK, AND, BY EXECUTION AND DELIVERY OF THIS WARRANT, EACH PARTY HEREBY ACCEPTS FOR ITSELF AND (TO THE EXTENT PERMITTED BY LAW) IN RESPECT OF ITS PROPERTY,
GENERALLY AND UNCONDITIONALLY, THE JURISDICTION OF THE AFORESAID COURTS. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY OBJECTION, INCLUDING, WITHOUT LIMITATION, ANY OBJECTION TO THE LAYING OF VENUE OR BASED ON THE GROUNDS OF FORUM NON CONVENIENS, WHICH
IT MAY NOW OR HEREAFTER HAVE TO THE BRINGING OF ANY SUCH ACTION OR PROCEEDING IN SUCH RESPECTIVE JURISDICTIONS. THIS SUBMISSION TO JURISDICTION IS NON-EXCLUSIVE AND DOES NOT PRECLUDE A PARTY FROM OBTAINING
JURISDICTION OVER ANOTHER PARTY IN ANY COURT OTHERWISE HAVING JURISDICTION. 
 EACH PARTY IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS OF
ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH ACTION OR PROCEEDING BY THE MAILING OF COPIES THEREOF BY REGISTERED OR CERTIFIED MAIL, POSTAGE PREPAID, TO IT AT THE ADDRESS SPECIFIED HEREIN OR SUCH OTHER ADDRESS AS IS SPECIFIED PURSUANT TO THE TERMS
HEREOF (OR ITS ASSIGNMENT AND ASSUMPTION), SUCH SERVICE TO BECOME EFFECTIVE 30 DAYS AFTER SUCH MAILING. NOTHING HEREIN SHALL AFFECT THE RIGHT OF A PARTY OR ANY HOLDER TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR TO COMMENCE LEGAL
PROCEEDINGS OR OTHERWISE PROCEED AGAINST ANOTHER PARTY IN ANY OTHER JURISDICTION. 
 [remainder of page intentionally left blank] 

  
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 IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed as of the date
of this Warrant. 
  

			
	DMB ACQUISITION CORP.
		
	By:	 	  

		 	Name: Andrew McDonald
		 	Title: Chief Executive Officer


  

			
	Holder:
	
	Accepted and Agreed:
	
	LIFESCI HOLDINGS, LLC
		
	By:	 	
                     


	Name:	 	
	Title:	 	


  
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 PURCHASE FORM 

Dated ____________________ 
 (1) The undersigned
hereby irrevocably elects to exercise the within Warrant to the extent of purchasing Shares of DMB Acquisition Corp. (or such number of Shares or other securities or property to which the undersigned is entitled in lieu thereof or in addition
thereto under the provisions of the Warrant). 
  

	(2)	 _______ (a) The undersigned hereby elects to make payment with the enclosed bank draft, certified check or
money order payable to the Company in payment of the exercise price determined under, and on the terms specified in, the Warrant, or 



_______ (b) The undersigned hereby elects to make payment on a cashless basis. 

(3) The undersigned hereby irrevocably directs that the said shares be issued and delivered as follows: 

 

							
	 Name(s) in Full
	 	 Address(es)
	 	 Number of Shares

(net of any Shares
 used to exercise
on a
 cashless basis
	 	 S.S. or IRS #



(4) If the Warrant was not exercised in full, please check the following: ___ 

The undersigned hereby irrevocably directs that any remaining portion of the warrant be issued and delivered as follows: 

 

							
	 Name(s) in Full
	 	 Address(es)
	 	 Number of Shares
	 	 S.S. or IRS #



 

	
	
	  

	Signature of Holder
	
	  

	Print Name


  
 9