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 *
Sondergaard Peter
   2. Issuer Name and Ticker or Trading Symbol
GARTNER INC [IT] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP, Research
(Last)
(First)
(Middle)
56 TOP GALLANT RD, P.O. BOX 10212		 3. Date of Earliest Transaction (Month/Day/Year)
02/15/2007
(Street)

STAMFORD, CT 06904-2212		 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

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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
Restricted Stock Units $ 0.0005 02/15/2007   A   15,480 (4)     (4)   (4) Common Stock 15,480 $ 0 39,480 D  
Stock Appreciation Rights $ 21.85 02/15/2007   A   29,273   02/15/2008(1) 02/15/2014 Common Stock 29,273 $ 0 29,273 D  
Restricted Stock Units $ 0.0005 02/15/2007   A   3,432     (2)   (2) Common Stock 3,432 $ 0 3,432 I (3) By Spouse

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Sondergaard Peter
56 TOP GALLANT RD
P.O. BOX 10212
STAMFORD, CT 06904-2212		       SVP, Research  

Signatures

 /s/ Kevin Feeney for Peter Sondergaard   02/20/2007
**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) The stock appreciation right becomes exercisable in four substantially equal annual installments commencing on 2/15/2008.
(2) The Restricted Stock Unit vests in four substantially equal annual installments beginning on 2/15/2008.
(3) Mr. Sondergaard disclaims beneficial ownership of these RSUs.
(4) The RSUs reported represent an adjustment to a target number of RSUs previously awarded on March 15, 2006. The actual number finally awarded depended upon the achievement of certain 2006 performance criteria set by the Compensation Committee. On February 15, 2007, the Committee finally determined the achievement of the 2006 performance criteria; accordingly, 164.5% of the target number of RSUs was the number of RSUs finally awarded. The number of RSUs reported on this filing represents the difference between the actual number finally awarded and the target number previously reported. The RSUs vest in four equal annual installments, beginning on May 15, 2007.

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