Gartner (IT)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-28 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: GARTNER INC (IT) CIK: 0000749251 --- Reporting Owner --- Name: GRABE WILLIAM O CIK: 0001185567 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-29 | Code: M (Exercise of derivative) Shares: +551 | Price: $0.00 Shares Owned After: 1,042 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-05-28 | Code: A (Grant or award) Shares: +1,489 | Price: $0.00 Shares Owned After: 1,489 | Ownership: D (Direct) Footnotes: [F2] One hundred percent (100%) of the RSUs shall vest on May 28, 2027, subject to the Grantee's continued service as a director through such date. [F2] One hundred percent (100%) of the RSUs shall vest on May 28, 2027, subject to the Grantee's continued service as a director through such date. [Transaction #2] Security: Restricted Stock Units Date: 2026-05-29 | Code: M (Exercise of derivative) Shares: -551 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F3] One hundred percent (100%) of the RSUs shall vest on May 29, 2026, subject to Grantee's continued service as a director through such date. [F3] One hundred percent (100%) of the RSUs shall vest on May 29, 2026, subject to Grantee's continued service as a director through such date. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F1] These shares are held in a grantor retained annuity trust created on August 22, 2025 (the "2025 GRAT"). These shares are held in trust for the benefit of the reporting person and his children. The reporting person is the Trustee of the 2025 GRAT. [Holding #2] Security: Common Stock Ownership: I (Indirect) [Holding #3] Security: Common Stock Ownership: I (Indirect) [Holding #4] Security: Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: These shares are held in a grantor retained annuity trust created on August 22, 2025 (the "2025 GRAT"). These shares are held in trust for the benefit of the reporting person and his children. The reporting person is the Trustee of the 2025 GRAT. F2: One hundred percent (100%) of the RSUs shall vest on May 28, 2027, subject to the Grantee's continued service as a director through such date. F3: One hundred percent (100%) of the RSUs shall vest on May 29, 2026, subject to Grantee's continued service as a director through such date. --- Signature --- /s/ /s/ Kevin Tang for William O. Grabe (2026-06-01)