UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 45675Y104

1.

Names of Reporting Persons
Chevrillon & Associés

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
France

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
2,434,970

6.

Shared Voting Power
0

7.

Sole Dispositive Power
2,434,970

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,434,970

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
6.73%

12.

Type of Reporting Person (See Instructions)
CO

Item 1.

(a)

Name of Issuer:
Information Services Group, Inc.

(b)

Address of Issuer’s Principal Executive Offices
Two Stamford Plaza

281 Tresser Boulevard

Stamford, CT 06901

Item 2.

(a)

Name of Person Filing
Chevrillon & Associés

(b)

Address of Principal Business Office or, if none, Residence
4/6 Rond Point des Champs Elysées

Paris, France 75008

(c)

Citizenship
France

(d)

Title of Class of Securities
Common Stock

(e)

CUSIP Number
45675Y104

Item 3.

If this statement is filed pursuant to §§240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:

Not Applicable

Item 4.

Ownership

(a)

Amount beneficially owned:   

2,434,970

On January 4, 2011, the Issuer executed an Agreement for the Sale and Purchase of the Entire Issued Share Capital of CCGH Limited (the “Agreement”) and consummated the acquisition of the entire issued share capital of CCGH Limited, an English corporation (“Compass”).  Under the terms of the Agreement, CPIV S.A. (“CPIV”), a subsidiary of the Reporting Person, agreed to sell and transfer, and the Issuer agreed to buy, CPIV’s share capital of Compass (the “Share Purchase”).  The Share Purchase was consummated on January 4, 2011.  CPIV received as consideration for the Share Purchase cash, convertible notes and 1,029,437 shares of ISG common stock which are subject to transfer restrictions that expire on January 31, 2013.

Since the consummation of the Share Purchase, the Reporting Person has made open-market purchases totaling 438,888 shares of ISG common stock and CPIV has made open-market purchases totaling 966,645 shares of ISG common stock.

(b)

Percent of class:   

6.73%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote:   

2,434,970

(ii)

Shared power to vote or to direct the vote:    

0

(iii)

Sole power to dispose or to direct the disposition of:  

2,434,970

(iv)

Shared power to dispose or to direct the disposition of:   

0

Item 5

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following   o.

Item 6

Ownership of More than Five Percent on Behalf of Another Person

Not Applicable

Item 7

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Not Applicable

Item 8.

Identification and Classification of Members of the Group

Not Applicable

Item 9.

Notice of Dissolution of a Group

Not Applicable

Item 10.

Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Exhibits

Not applicable

January 31, 2013

Date

/s/ Cyrille Chevrillon

Signature

Cyrille Chevrillon

Name

President de Compagnie Financeciere Chevrillon, Associé Commandité Gérant de Chevrillon & Associés

Title