Specimen Certificate evidencing shares of common stock



 Exhibit 4.1 
 

 
  
 arbinet
Arbinet-thexchange, Inc. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE COMMON STOCK PAR VALUE $0.001 PER SHARE CUSIP 03875P 10 0 SEE REVERSE FOR CERTAIN DEFINITIONS THIS CERTIFIES THAT is the owner of FULLY PAID AND NON-ASSESSABLE SHARES, OF
THE COMMON STOCK, $0.001 PAR VALUE, OF Arbinet-thexchange, Inc. (the “Corporation”) transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney upon surrender of this Certificate properly
endorsed. This Certificate is not valid until countersigned and registered by the Transfer Agent and Registrar WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: COUNTERSIGNED AND
REGISTERED REGISTRAR AND TRANSFER COMPANY (Cranford, NJ) TRANSFER AGENT AND REGISTRAR BY: AUTHORIZED SIGNATURE Secretary President and Chief Executive Officer 







 Arbinet-thexchange, Inc. 
  
 THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO REQUESTS THE POWERS, DESIGNATIONS, PREFERENCES AND
RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES THEREOF AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND/OR RIGHTS. ANY SUCH REQUEST SHOULD BE ADDRESSED TO THE SECRETARY OF THE
CORPORATION AT ITS PRINCIPAL PLACE OF BUSINESS. 
  
 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)
  
 under Uniform Gifts to
Minors
  
 Act
                                
                         (State)

	 TEN ENT
	 	—	 	as tenants by the entireties	  	 	 
	 JT TEN
	 	—	 	 as joint tenants with right of
 survivorship and not as
tenants
 in common
	  	 	 
					
	 	 	 	 	 	  	UNIF TRANS MIN ACT   —	 	                           Custodian
                            
            (Cust)
                                        
      (Minor)
  
 under Uniform Transfers 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
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 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.
  
  
  

	  
 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, MUTILATED OR DESTROYED, THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE
OF A REPLACEMENT CERTIFICATE.