GARTNER INC — Director's Dealing 2011

Mar 1, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GARTNER INC (IT)
CIK: 0000749251
Period of Report: 2011-02-25

Reporting Person: YOO MICHAEL J (SVP, HTTP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-25	Common Stock	M	5621	$22.06	Acquired	21347	Direct
2011-02-25	Common Stock	D	3289	$37.70	Disposed	18058	Direct
2011-02-25	Common Stock	F	1002	$37.70	Disposed	17056	Direct
2011-02-25	Common Stock	M	9104	$11.11	Acquired	26160	Direct
2011-02-25	Common Stock	D	2682	$37.70	Disposed	23478	Direct
2011-02-25	Common Stock	F	2449	$37.70	Disposed	21029	Direct
2011-02-28	Common Stock	S	5303	$37.5415	Disposed	15726	Direct
2011-02-28	Common Stock	S	15726	$37.7189	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-25	Stock Appreciation Rights	$22.06	M	5621	Disposed	2017-02-11	Common Stock (5621)	Direct
2011-02-25	Stock Appreciation Rights	$11.11	M	9104	Disposed	2016-02-11	Common Stock (9104)	Direct

Footnotes

F1: Represents shares withheld from the settlement of the SARs for the payment of applicable income and payroll tax withholding due upon exercise.

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

F4: These SARs are part of an award that became exercisable in four substantially equal, annual installments commencing on 2/11/2011.

F5: This transaction was executed in multiple trades at prices ranging from $37.51 to $37.65. 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.

F6: This transaction was executed in multiple trades at prices ranging from $37.6386 to $37.81. 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.