Based on data from the past 90 days ending December 31, 2025, Gartner's three largest insider shareholders are Chairman And Ceo Eugene A Hall (1.17Mn shares), Director Stephen G Pagliuca (111.61K shares), Evp & Cfo Craig Safian (77.93K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Eugene A Hall | Chairman And Ceo | 1,170,307 | 02 Dec, 2025 |
| James C Smith | 509,457 | 27 Nov, 2024 | |
| Stephen G Pagliuca | 111,613 | 12 Dec, 2025 | |
| Craig Safian | Evp & Cfo | 77,928 | 02 Dec, 2025 |
| Raul E Cesan | 59,078 | 03 Oct, 2025 | |
| Alwyn Dawkins | Evp And Global Business Sales | 52,674 | 03 Dec, 2024 |
| Scott Hensel | Evp Global Services & Delivery | 22,605 | 22 May, 2025 |
| Robin B Kranich | Evp & Chro | 20,528 | 02 Dec, 2025 |
| Michael Patrick Diliberto | Evp And Chief Information Officer | 18,501 | 25 Aug, 2023 |
| Karen E Dykstra | 17,000 | 10 Jun, 2025 | |
| Valentin Sribar | Evp And Research & Advisory | 12,992 | 12 Feb, 2025 |
| Kenneth Allard | Evp And Digital Markets | 12,340 | 12 Feb, 2025 |
| Richard J Bressler | 11,871 | 20 Nov, 2023 | |
| Joseph P. Beck | Evp And Global Technology Sales | 9,955 | 12 Nov, 2024 |
| Michael P Harris | Evp And Research & Advisory | 9,280 | 01 Sep, 2021 |
| Jules Kaufman | Evp And Gc | 9,241 | 02 Sep, 2022 |
| Anne Sutherland Fuchs | 8,158 | 03 Oct, 2025 | |
| William James Iii Wartinbee | Evp And Global Sales Strat & Ops | 7,919 | 17 Dec, 2025 |
| Akhil Jain | Evp And Consulting | 6,548 | 21 May, 2025 |
| Yvonne Genovese | Evp And Research & Advisory | 4,889 | 03 Mar, 2025 |
| Claire Herkes | Evp And Conferences | 4,074 | 05 Dec, 2025 |
| John J Rinello | Svp And Global Business Sales | 3,046 | 05 Dec, 2025 |
| Eileen Serra | 2,327 | 26 Feb, 2025 | |
| Diana Sue Ferguson | 2,324 | 03 Oct, 2025 | |
| Jose M Gutierrez | 2,132 | 03 Oct, 2025 | |
| Thomas Sang Kim | Evp And Chief Legal Officer | 1,861 | 06 May, 2025 |
| Altaf Rupani | Evp And Chief Information Officer | 559 | 02 Dec, 2025 |
| Ham Dick Van | Svp And Global Technology Sales | 362 | 02 Dec, 2025 |
| William O Grabe | 5 | 12 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Dec, 2025 | William James Iii Wartinbee | Common Stock | D | 46 | $0.00 | 7,919 | D | G |
| 11 Dec, 2025 | William O Grabe | Common Stock | D | 4,131 | $0.00 | 5 | D | G |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 1,535 | $225.98 | 69,848 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 5,773 | $227.22 | 75,621 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 5,496 | $227.84 | 81,117 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 8,486 | $228.91 | 89,603 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 4,593 | $230.09 | 94,196 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 9,859 | $231.12 | 104,055 | D | P |
| 10 Dec, 2025 | Stephen G Pagliuca | Common Stock | A | 7,558 | $231.75 | 111,613 | D | P |
| 03 Dec, 2025 | John J Rinello | Common Stock | D | 220 | $229.57 | 3,046 | D | S |
| 03 Dec, 2025 | Claire Herkes | Common Stock | D | 367 | $231.56 | 4,074 | D | S |
| 28 Nov, 2025 | Ham Dick Van | Common Stock | A | 26 | $221.10 | 362 | D | J |
| 28 Nov, 2025 | Eugene A Hall | Common Stock | A | 26 | $221.10 | 1,170,307 | D | J |
| 28 Nov, 2025 | Altaf Rupani | Common Stock | A | 20 | $221.10 | 559 | D | J |
| 28 Nov, 2025 | Claire Herkes | Common Stock | A | 3,052 | $180.64 | 7,126 | D | M |
| 28 Nov, 2025 | Robin B Kranich | Common Stock | A | 26 | $221.10 | 20,528 | D | J |
| 28 Nov, 2025 | Craig Safian | Common Stock | A | 15 | $221.10 | 77,928 | D | J |
| 28 Nov, 2025 | Claire Herkes | Common Stock | D | 2,369 | $232.74 | 4,757 | D | D |
| 28 Nov, 2025 | Claire Herkes | Common Stock | D | 316 | $232.74 | 4,441 | D | F |
| 15 Oct, 2025 | Altaf Rupani | Common Stock | A | 166 | $0.00 | 600 | D | M |