X0303 4 2010-10-01 0 0000749251 GARTNER INC IT 0001418814 ValueAct Holdings, L.P. 435 PACIFIC AVENUE, 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 0001464912 ValueAct Capital Master Fund, L.P. 435 PACIFIC AVENUE 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 0001418812 VA Partners I, LLC 435 PACIFIC AVENUE, 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 0001351069 ValueAct Capital Management, L.P. 435 PACIFIC AVENUE, 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 0001351073 ValueAct Capital Management, LLC 435 PACIFIC AVENUE, 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 0001418813 ValueAct Holdings GP, LLC 435 PACIFIC AVENUE, 4TH FLOOR SAN FRANCISCO CA 94133 0 0 1 0 Common Stock, par value $.01 per share 16790013 I See footnote Common Stock Equivalents (CSE) 0 2010-10-01 4 A 0 458 A Common Stock 458 15353 I See footnotes The reported stock is owned directly by ValueAct Capital Master Fund, L.P. and may be deemed to be beneficially owned by (i) VA Partners I, LLC as General Partner of ValueAct Capital Master Fund, L.P., (ii) ValueAct Capital Management, L.P. as the manager of of ValueAct Capital Master Fund, L.P., (iii) ValueAct Capital Management, LLC as General Partner of ValueAct Capital Management, L.P., (iv) ValueAct Holdings, L.P. as the sole owner of the limited partnership interests of ValueAct Capital Management, L.P. and the membership interests of ValueAct Capital Management, LLC and as the majority owner of the membership interests of VA Partners I, LLC and (v) ValueAct Holdings GP, LLC as General Partner of ValueAct Holdings, L.P. These are Common Stock Equivalents received as compensation for Jeffrey W. Ubben's service as an outside director of Gartner, Inc. They were granted under the Company's 2003 Long-Term Incentive Plan (LTIP). The Common Stock Equivalents convert into Gartner Common Stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the 2003 LTIP. Column 8 is not a required reportable field. Under an agreement with ValueAct Capital, Jeffrey W. Ubben is deemed to hold the Common Stock Equivalents for the benefit of ValueAct Capital Master Fund, L.P. & indirectly for (i) VA Partners I, LLC as General Partner of ValueAct Capital Master Fund, L.P., (ii) ValueAct Capital Management, L.P. as the manager of ValueAct Capital Master Fund, L.P., (iii) ValueAct Capital Management, LLC as General Partner of ValueAct Capital Management, L.P., (iv) ValueAct Holdings, L.P. as the sole owner of the limited partnership interests of ValueAct Capital Management, L.P. and the membership interests of ValueAct Capital Management, LLC and as the majority owner of the membership interests of VA Partners I, LLC and (v) ValueAct Holdings GP, LLC as General Partner of ValueAct Holdings, L.P. Each reporting person listed herein disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. Joint Filer Information: Name: ValueAct Capital Master Fund, L.P. Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: ValueAct Holdings, L.P. Issuer and Ticker: Gartner, Inc. (IT) Date of Event Requiring Statement: 10/01/2010 Name: VA Partners I, LLC Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: ValueAct Holdings, L.P. Issuer and Ticker: Gartner, Inc. (IT) Date of Event Requiring Statement: 10/01/2010 Name: ValueAct Capital Management, L.P. Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: ValueAct Holdings, L.P. Issuer and Ticker: Gartner, Inc. (IT) Date of Event Requiring Statement: 10/01/2010 Name: ValueAct Capital Management, LLC Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: ValueAct Holdings, L.P. Issuer and Ticker: Gartner, Inc. (IT) Date of Event Requiring Statement: 10/01/2010 Name: ValueAct Holdings GP, LLC Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: ValueAct Holdings, L.P. Issuer and Ticker: Gartner, Inc. (IT) Date of Event Requiring Statement: 10/01/2010 VALUEACT HOLDINGS, L.P., By: VALUEACT HOLDINGS GP, LLC, its General Partner, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05 VALUEACT CAPITAL MASTER FUND, L.P., By: VA PARTNERS I, LLC, its General Partner, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05 VA PARTNERS I, LLC, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05 VALUEACT CAPITAL MANAGEMENT, L.P., By: VALUEACT CAPITAL MANAGEMENT, LLC, its General Partner, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05 VALUEACT CAPITAL MANAGEMENT, LLC, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05 VALUEACT HOLDINGS GP, LLC, By:/s/ George F. Hamel. Jr., Chief Operating Officer 2010-10-05