Specimen Common Stock Certificate



 Exhibit 4.1 
  

COGENT, INC. 

 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-
 TEN ENT-
 JT TEN-
	 	     as tenants in common
     as tenants by the entireties
     as joint tenants with
     right of survivorship and
     not
as tenants in common
	 	UNIF GIFT MIN ACT-	 	 _______________
	 	Custodian     ___________________
	 	 	 	 	(Cust)	 	 	 	 (Minor)

	 	 	 	 	under Uniform Gifts to Minors
	 	 	 	 	 Act _____________________________________________

	 	 	 	 	 	 	(State)	 	 
	 	 	 	UNIF TRF MIN ACT-	 	 _______________
	 	Custodian (until age_____________)
	 	 	 	 	 	 	(Cust)	 	 	 	 
	 	 	 	 	 	 	 _______________under Uniform Transfers

	 	 	 	 	 	 	(Minor)	 	 	 	 
	 	 	 	 	 	 	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 ________________________________________________________________________________________________________________________________________________________________________ 
  

	
	 PLEASE INSERT SOCIAL SECURITY OR
 OTHER IDENTIFYING NUMBER OF ASSIGNEE


  

 PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE 
  

  

  
                                       
                           Shares of the Common Stock represented by the within Certificate, and do(es) 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
	 	  

	 	 X
	 	  


	 	 	 	 	 X
	 	  


	 	 	 	 	 NOTICE:
	 	THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) 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.	 	 	 	 

  
 KEEP THIS CERTIFICATE IN A SAFE PLACE.
IF IT IS LOST, STOLEN OR DESTROYED, THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. 







 

 
  

					
	COMMON STOCK	 	 	  	COMMON STOCK
			
	CS-                            	 	 	  	 
			
	 INCORPORATED UNDER THE LAWS OF
 THE STATE OF DELAWARE
	 	 	  	CUSIP 19239Y 10 8
			
	 	 	 	  	SEE REVERSE FOR CERTAIN DEFINITIONS
			
	THIS CERTIFIES THAT	 	 	  	 
	 	 	 	  	 

  
 is the owner of 
  
 FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.001 PAR VALUE, OF

  
 COGENT, INC. 
  
 transferable on the books of the Corporation by the holder hereof in person or by duly
authorized attorney upon the surrender of this certificate properly endorsed. This certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. 
  
 WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 
  

							
	

	  	 Dated:
	  	 	  	 
	  	 	  	

	  	


	  	 	  	CFO and Secretary	  	CEO and Chairman of the Board

  
  

							
	 COUNTERSIGNED AND REGISTERED:
	 	 	 	 
	 	 	 U.S. STOCK TRANSFER CORPORATION
	 	 	 	 
	 	 	Glendale, CA	 	 	 	 TRANSFER AGENT
 AND REGISTRAR

				
	 BY
	 	 	 	 	 	 
	 	 	 	 	 	 	AUTHORIZED SIGNATURE