EXHIBIT 4.1


 


NUMBER              UNITS

U-                       


 


SEE REVERSE FOR

CERTAIN DEFINITIONS


 


INFORMATION SERVICES
GROUP, INC.


 


CUSIP


 


UNITS CONSISTING OF ONE
SHARE OF COMMON STOCK AND

ONE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK


 


THIS CERTIFIES THAT                                                                                         
is the owner of                                      
Units.


 


Each Unit (“Unit”) consists of one (1) share of common
stock, par value $0.001 per share (“Common Stock”), of Information Services
Group, Inc., a Delaware corporation (the “Corporation”), and one warrant (the “Warrant”).
The Warrant entitles the holder to purchase one (1) share of Common Stock for
[$6.00/$7.50] per share (subject to adjustment). The Warrant will become
exercisable on the later of (i) the Corporation’s completion of an acquisition
of one or more domestic or international or operating businesses through a
merger, capital stock exchange, asset acquisition or other similar business
combination and (ii)                         
[one year after the effective date of the registration statement relating to
the initial public offering of the Units], and will expire unless exercised
before 5:00 p.m., New York City time, on                         ,
2011 [four years after the effective date of the registration statement
relating to the initial public offering of the Units], or earlier upon
redemption (the “Expiration Date”). The Common Stock and Warrants comprising
the Units represented by this certificate are not transferable separately prior
to five business days following the earlier to occur of (1) the expiration or
termination of the underwriter’s over-allotment option in connection with the
Corporation’s initial public offering or (2) the exercise in full of such
underwriter’s over-allotment option, subject in either case to the Corporation
filing a Current Report on Form 8-K with the Securities and Exchange Commission
containing an audited balance sheet reflecting the Corporation’s receipt of the
gross proceeds of its initial public offering and issuing a press release
announcing when such separate trading will begin. The terms of the Warrant are
governed by a Warrant Agreement, dated as of                         ,
2007, between the Corporation and Continental Stock Transfer & Trust
Company, as Warrant Agent, and are subject to the terms and provisions
contained therein, all of which terms and provisions the holder of this
certificate consents to by acceptance hereof. Copies of the Warrant Agreement are
on file at the office of the Warrant Agent at 17 Battery Place, New York, New
York 10004, and are available to any Warrant holder on written request and
without cost.


 


This certificate is not valid unless countersigned by
the Transfer Agent and Registrar of the Corporation.


 


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Witness the facsimile seal of the Corporation and the
facsimile signature of its duly authorized officers.


 


INFORMATION SERVICES
GROUP, INC.

CORPORATE

DELAWARE

SEAL

2006


 


	
  By:

  	
   

  	
   

  	
   

  
	
   

  	
  Chairman of the Board

  	
   

  	
  Secretary

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  By:

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
  Transfer Agent

  	
   

  	
   

  	
   

  



 

















 


INFORMATION SERVICES
GROUP, INC.


 


The Corporation will furnish without charge to each
stockholder who so requests, a statement of the powers, designations,
preferences and relative, participating, optional or other special rights of
each class of stock or series thereof of the Corporation and the
qualifications, limitations, or restrictions of such preferences and/or rights.


 


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 survivorship and 

  	
   

  	
   

  	
  under Uniform Gifts to

  	
   

  
	
   

  	
   

  	
  not as tenants in common

  	
   

  	
   

  	
  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)

  
	
   

  	
   

  
	
   

  	
   

  
	
                                                                                                                                                  
  UNITS REPRESENTED BY THE WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY
  CONSTITUTE AND APPOINT                         
  ATTORNEY TO TRANSFER THE SAID UNITS 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.

  
					



 


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  Signature(s) Guaranteed:

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  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).