EX-4.1



 Exhibit 4.1 

Form of Stock Certificate of ContraFect Corporation 

[FRONT] 

                 Shares 

FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $0.0001 PAR VALUE PER SHARE, OF 

CONTRAFECT CORPORATION 

Incorporated under the Laws of the State of Delaware 

CUSIP NO.                  

AUTHORIZED COMMON STOCK:                  

PAR VALUE: $0.0001 PER SHARE 
 This is to Certify
that                  is the owner of                  fully paid and non-assessable
shares of the above Corporation transferable only on the books of the Corporation by the holder hereof in person or by duly authorized Attorney upon surrender of this Certificate properly endorsed. 

A statement of all of the rights, preferences, privileges and restrictions granted to or imposed upon the respective classes and/or series of shares of stock
of the Corporation and upon the holders thereof may be obtained by any stockholder upon request and without charge, at the principal office of the Corporation, and the Corporation will furnish any stockholder, upon request and without charge, a copy
of such statement. 
 Witness, the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 

Dated: 
 COUNTERSIGNED AND REGISTERED: 

AMERICAN STOCK TRANSFER & TRUST LLC, 
 TRANSFER AGENT AND
REGISTRAR 
  

									
		  	  
	  		  	  
	  	
		  	    Secretary	  		  	    Chief Executive Officer	  	

 [CONTRAFECT CORPORATION CORPORATE SEAL] 







 [BACK] 

THE CORPORATION WILL FURNISH TO ANY STOCKHOLDER, UPON REQUEST AND WITHOUT CHARGE, A FULL STATEMENT OF THE DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES AND
LIMITATIONS OF THE SHARES OF EACH CLASS AND SERIES AUTHORIZED TO BE ISSUED, SO FAR AS THE SAME HAVE BEEN DETERMINED, AND OF THE AUTHORITY, IF ANY, OF THE BOARD OF DIRECTORS TO DIVIDE THE SHARES INTO CLASSES OR SERIES AND TO DETERMINE AND CHANGE THE
RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF ANY CLASS OR SERIES. SUCH REQUEST MAY BE MADE TO THE SECRETARY OF THE CORPORATION OR TO THE TRANSFER AGENT NAMED ON THIS CERTIFICATE. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED
STOCK CERTIFICATE, OR HIS, HER OR ITS LEGAL REPRESENTATIVES, TO GIVE THE CORPORATION A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY
SUCH CERTIFICATE. 
 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 

TEN ENT - as tenants by the entireties 
 JT TEN - as joint tenants
with right of survivorship and not as tenants in common 
 UNIF GIFT MIN ACT- (Cust) Custodian - (Minor) 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
                             Shares of the common stock represented by the within Certificate,
and do hereby irrevocably constitute and appoint                                 
Attorney to transfer the said stock on the books of the within-named Corporation with full power of substitution in the premises. 
 Dated,
                     

			
		
	 	 	
	(Signature)	 	


 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: 

					
			
		 	 	 	
		 	(Signature)	 	

 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.