FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Schaer Hans Peter 2. Date of Event Requiring Statement (Month/Day/Year) 11/10/2005 3. Issuer Name and Ticker or Trading Symbol IHS Inc. [IHS] (Last) (First) (Middle) C/O IHS INC. 15 INVERNESS WAY EAST 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ENGLEWOOD, CO 80112 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Class A common stock 41,250,000 (1) I (2) See footnote (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B common stock	  (3)	  (3)	Class A common stock	13,750,000	$ (4)	I (2)	See footnote (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Schaer Hans Peter C/O IHS INC. 15 INVERNESS WAY EAST ENGLEWOOD, CO 80112	Â	  X	Â	Â

Signatures

/s/ STEPHEN GREEN		11/10/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Includes up to 16,692,250 shares of Class A common stock being sold pursuant to a prospectus contained in IHS Inc.'s registration statement on Form S-1 (Registration No. 333-122565) and 4,687,500 shares of Class A common stock being sold pursuant to an Amended and Restated Stock Purchase Agreement by and among Urpasis Investments Limited, Urvanos Investments Limited, IHS Inc., General Atlantic Partners 82, L.P., GAP Coinvestments III, LLC and GAP Coinvestments IV, LLC, dated October 6, 2005.
(2)	Mr. Schaer is filing this form in his capacity as a director of Tornabuoni Limited, an entity that oversees the trustee of the indirect sole owner of the securities. The board of directors of Tornabuoni Limited may only act by unanimous vote. Mr. Schaer disclaims beneficial ownership of the securities.
(3)	Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. In addition, each share of Class B common stock shall convert automatically, without any action by the holder, into one share of Class A common stock upon the occurrence of certain events as described in IHS Inc.'s registration statement on Form S-1 (Registration No. 333-122565) in the section captioned "Description of Capital Stock--Common Stock--Conversion."
(4)	Each share of Class B common stock is convertible into one share of Class A common stock.

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