e424b3
Filed Pursuant to Rule 424(b)(3)
Registration No. 333-172266
PROSPECTUS SUPPLEMENT
(To Prospectus Dated February 15, 2011)
 
(GARTNER LOGO)
This Prospectus Supplement is being filed solely to update the “Calculation of Registration Fee” table in accordance with Rule 456(b)(1)(ii) of the Securities Act of 1933, as amended. The amount of securities to be registered hereunder is estimated solely for the purposes of calculating the registration fee hereunder.
CALCULATION OF REGISTRATION FEE
 
                         
            Proposed
 		    Proposed Maximum
 		    Amount of
Title of Each Class of
 		    Amount to be
 		    Maximum Offering
 		    Aggregate
 		    Registration
Securities to be Registered     Registered     Price per Share(1)     Offering Price     Fee(2)
Common Stock, $0.0005 par value
    3,933,120 Shares     37.30     146,705,376     16,812.44
                         
 
(1)  Estimated solely for purposes of calculating the registration fee hereunder.
 
(2)  This filing fee of $16,812.44 is calculated and being paid pursuant to Rule 457(r) of the Securities Act of 1933 and relates to the registration statement on form S-3 (File No. 333-172266) filed by Gartner, Inc. on February 15, 2011.