EX-4.1



 Exhibit 4.1 
  






 
 Number rb Roka bioscience shares Incorporated under the laws of the state of Delaware common stock cusip
775431109 see reverse for certain definitions this certifies that Specimen is the owner of fully paid and non-assessable shares of the common stock, par value $0.001 per share, of roka bioscience, inc. transferable only on the books of the
corporation by the holder hereof in person or by attorney upon surrender of this certificate properly endorsed. This certificate is not valid until countersigned by the transfer agent and registered by the registrar. In witness whereof, the said
corporation has caused this certificate to be signed by the facsimile signatures of its duly authorized officers and its corporate seal to be here unto affixed. Dated : treasurer president countersigned and registered American stock transfer &
trust company, llc transfer agent and registrar by authorized signature Roka bioscience, inc. corporate seal 2009 delaware Goes 860 litho in u.s.a. m. burrkeim, phila. 







 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	 		 	under Uniform Gifts to Minors
		 		 	survivorship and not as tenants in common	 	Act 	 	 
		 		 		 		 	(State)

 Additional abbreviations may also be used though not in the above list. 

For Value Received,
                                        
hereby sell, assign and transfer unto 
  

			
	PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE	 	
	 	 	
	 	 	 
	 	 	 
	  
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS
INCLUDING POSTAL ZIP CODE OF ASSIGNEE)

	 


                          
                                         
                                         
                                         
                                         
       Shares of 
 the Common Stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
                                        


                         
                                         
                                         
                                         
                                         
            Attorney 
 to transfer the said Shares on the books of the within named
Corporation with full power of substitution in the premises. 
 Dated:
                                     

 

					
		  	× 	  	 
		  		  	
		  	× 	  	 
		  	NOTICE:	  	THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

 Signature(s) Guaranteed 
  

			
	 BY:
	 	  

		 	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.