GARTNER INC — Director's Dealing 2010

Dec 1, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GARTNER INC (IT)
CIK: 0000749251
Period of Report: 2010-11-29

Reporting Person: HALL EUGENE A (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-29	Common Stock	M	87141	$11.11	Acquired	644950	Direct
2010-11-29	Common Stock	D	29843	$32.44	Disposed	615107	Direct
2010-11-29	Common Stock	F	24610	$32.44	Disposed	590497	Direct
2010-11-30	Common Stock	S	49525	$32.3715	Disposed	540972	Direct
2010-11-30	Common Stock	J	194	$30.5615	Acquired	541166	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-11-29	Stock Appreciation Rights	$11.11	M	87141	Disposed	2016-02-11	Common Stock (87141)	Direct

Footnotes

F1: These SARs are part of an award that is exercisable in four substantially equal annual installments commencing on 2/11/2010.

F2: Represents the simultaneous sale back to the issuer of this number of shares having an aggregrate value, based on the market price on the date of exercise, substantially equal to the aggregrate exercise price of the SARs.

F3: Represents shares withheld from the settlement of the SARs for the payment of applicable income and payroll tax withholding due upon exercise.

F4: This transaction was executed in multiple trades at prices ranging from $32.35 to $32.45. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5: Represents shares acquired under Gartner Inc.'s 2002 Employee Stock Purchase Plan in a transaction exempt from Section 16(b) pursuant to Rule 16b-3(c).