Ownership Submission
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

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(h) of the Investment Company Act of 1940
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(Print or Type Responses)
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 (Month/Day/Year)
09/21/2007
(Street)

GREENWICH, CT 06830		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 09/21/2007   J(1)   958,161 D $ 0 4,687,500 I See Footnote (2)
Class A Common Stock 09/21/2007   J(1)   958,161 A $ 0 4,687,500 I See Footnote (2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction 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
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(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

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   09/25/2007
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) On September 21, 2007, General Atlantic Partners, 82, L.P. ("GAP 82") distributed shares of Class A common stock of the issuer to a limited partner of GAP 82, pro rata and without the payment of consideration. Such shares were contributed by the limited partner to GAP-W, LLC ("GAP-W").
(2) Represents 3,307,917 shares owned by GAP 82, 958,161 shares owned by GAP-W, 360,054 shares owned by GAP Coinvestments III, LLC ("GAPCO III") and 61,368 shares owned by GAP Coinvestments IV, LLC ("GAPCO IV"). General Atlantic LLC ("GA LLC") is the general partner of GAP 82 and the manager of GAP-W. The Managing Directors of GAPCO III and GAPCO IV 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 such shares except to the extent of his pecuniary interest therein.

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