FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

DENNING STEVEN A
2. Issuer Name and Ticker or Trading Symbol

IHS Inc. [ IHS ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

GENERAL ATLANTIC SERVICE COMPANY, LLC, 3 PICKWICK PLAZA
3. Date of Earliest Transaction (MM/DD/YYYY)

6/21/2010
(Street)

GREENWICH, CT 06830
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

6/23/2010 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock   6/21/2010     S    901235   D $57.02   0   (7) I   See Footnote   (1)
Class A Common Stock   6/21/2010     S    423950   D $57.02   145409   (7) I   See Footnote   (2)
Class A Common Stock   6/21/2010     S    73656   D $57.02   0   (7) I   See Footnote   (3)
Class A Common Stock   6/21/2010     S    11619   D $57.02   0   (7) I   See Footnote   (4)
Class A Common Stock   6/21/2010     J    24440   D   (5) 0   (7) I   See Footnote   (3)
Class A Common Stock   6/21/2010     J    5100   D   (6) 0   (7) I   See Footnote   (4)
Class A Common Stock                  25128   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:
( 1)  By General Atlantic Partners, 82, L.P. ("GAP 82"). See footnote 7.
( 2)  By GAP-W, LLC ("GAP-W"). See footnote 7.
( 3)  By GAP Coinvestments III, LLC ("GAPCO III"). See footnote 7.
( 4)  By GAP Coinvestments IV, LLC ("GAPCO IV"). See footnote 7.
( 5)  Distribution of shares of Class A Common Stock to certain members of GAPCO III.
( 6)  Distribution of shares of Class A Common Stock to certain members of GAPCO IV.
( 7)  Amount of securities beneficially owned following June 21, 2010 reported transactions represents 0 shares owned by GAP 82; 145,409 shares owned by GAP-W; 0 shares owned by GAPCO III and 0 shares owned by GAPCO IV. General Atlantic LLC ("GA LLC") is the general partner of GAP 82 and General Atlantic GenPar, L.P. ("GA GenPar"). GA GenPar is the manager of GAP-W. The Managing Directors of GA LLC are Managing Members of GAPCO III and GAPCO IV. Mr. Denning is Chairman and a Managing Director of GA LLC and a Managing Member of each of GAPCO III and GAPCO IV, and disclaims beneficial ownership of all shares reported herein except to the extent of his pecuniary interest in such shares.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
DENNING STEVEN A
GENERAL ATLANTIC SERVICE COMPANY, LLC
3 PICKWICK PLAZA
GREENWICH, CT 06830
X



Signatures
/s/ Steven A. Denning 6/25/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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