GARTNER INC — Director's Dealing 2010

Feb 18, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GARTNER INC (IT)
CIK: 0000749251
Period of Report: 2010-02-17

Reporting Person: Sondergaard Peter (SVP, Research)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-17	Common Stock	M	2000	$9.10	Acquired	8109	Indirect
2010-02-17	Common Stock	M	2500	$7.9531	Acquired	10609	Indirect
2010-02-17	Common Stock	M	1725	$9.05	Acquired	12334	Indirect
2010-02-17	Common Stock	M	2500	$7.75	Acquired	14834	Indirect
2010-02-17	Common Stock	M	3750	$7.00	Acquired	18584	Indirect
2010-02-17	Common Stock	M	1500	$12.45	Acquired	20084	Indirect
2010-02-17	Common Stock	S	8506	$23.5733	Disposed	11578	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-17	Non Qualified Stock Option (Right to Buy)	$9.10	M	2000	Disposed	2011-11-28	Common Stock (2000)	Indirect
2010-02-17	Non Qualified Stock Option (Right to Buy)	$7.9531	M	2500	Disposed	2010-12-06	Common Stock (2500)	Indirect
2010-02-17	Non Qualified Stock Option (Right to Buy)	$9.05	M	1725	Disposed	2012-12-13	Common Stock (1725)	Indirect
2010-02-17	Non Qualified Stock Option (Right to Buy)	$7.75	M	2500	Disposed	2013-05-15	Common Stock (2500)	Indirect
2010-02-17	Non Qualified Stock Option (Right to Buy)	$7.00	M	3750	Disposed	2010-12-15	Common Stock (3750)	Indirect
2010-02-17	Non Qualified Stock Option (Right to Buy)	$12.45	M	1500	Disposed	2014-06-01	Common Stock (1500)	Indirect

Footnotes

F1: This option is fully exercisable.

F2: This transaction was executed in multiple trades at prices ranging from $23.5600 to $23.5785. 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.