IT
GARTNER INC
Services-Management ServicesNYSELarge accelerated filer
Total Trades
173
Buys
3
Sells
142
Largest Trade
N/A
Insiders
22
Institutional Funds
704
Inst. Value
$1M+
Activist Filings
15
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Kranich Robin B | EVP & CHRO | SELL | $100K–$500K | 700 | $342.19 | May 31, 2023 |
| Herkes Claire | EVP, Conferences | SELL | $1M+ | 3K | $344.10 | May 31, 2023 |
| Herkes Claire | EVP, Conferences | EXERCISE | $100K–$500K | 2K | $180.64 | May 31, 2023 |
| Wartinbee William James III | SVP | SELL | $100K–$500K | 835 | $332.24 | May 24, 2023 |
| Allard Kenneth | EVP & CMO | SELL | $100K–$500K | 792 | $327.10 | May 19, 2023 |
| Allard Kenneth | EVP & CMO | EXERCISE | $500K+ | 3K | $153.70 | May 19, 2023 |
| Wartinbee William James III | SVP | SELL | $100K–$500K | 1K | $322.29 | May 18, 2023 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 1K | $318.51 | May 18, 2023 |
| Diliberto Michael Patrick | EVP | SELL | $100K–$500K | 1K | $310.09 | May 15, 2023 |
| Diliberto Michael Patrick | EVP | EXERCISE | $100K–$500K | 3K | $99.07 | May 15, 2023 |
| Genovese Yvonne | EVP | SELL | $100K–$500K | 1K | $299.14 | May 8, 2023 |
| Sribar Valentin | EVP | SELL | $100K–$500K | 348 | $322.61 | Mar 16, 2023 |
| Genovese Yvonne | EVP | SELL | $100K–$500K | 1K | $322.21 | Mar 16, 2023 |
| Safian Craig | EVP & CFO | SELL | $1M+ | 5K | $341.53 | Mar 8, 2023 |
| Genovese Yvonne | EVP | SELL | $100K–$500K | 874 | $334.18 | Mar 7, 2023 |
| Dawkins Alwyn | EVP | EXERCISE | $100K–$500K | 4K | $99.07 | Mar 6, 2023 |
| Dawkins Alwyn | EVP | SELL | $1M+ | 4K | $331.28 | Mar 6, 2023 |
| HALL EUGENE A | CEO | SELL | $1M+ | 6K | $350.83 | Feb 21, 2023 |
| HALL EUGENE A | CEO | SELL | $1M+ | 9K | $350.66 | Feb 16, 2023 |
| Beck Joseph P. | EVP | SELL | $1M+ | 3K | $350.16 | Feb 15, 2023 |
| Hensel Scott | EVP Global Service… | EXERCISE | $500K+ | 10K | $95.89 | Feb 10, 2023 |
| Hensel Scott | EVP Global Service… | SELL | $1M+ | 3K | $355.00 | Feb 10, 2023 |
| HALL EUGENE A | CEO | SELL | $1M+ | 16K | $351.33 | Feb 10, 2023 |
| HALL EUGENE A | CEO | EXERCISE | N/A | 9K | — | Feb 10, 2023 |
| Herkes Claire | EVP, Conferences | EXERCISE | N/A | 977 | — | Feb 10, 2023 |
| Herkes Claire | EVP, Conferences | SELL | $100K–$500K | 613 | $355.56 | Feb 10, 2023 |
| FUCHS ANNE SUTHERLAND | Director | SELL | $100K–$500K | 1K | $319.17 | Jan 18, 2023 |
| Diliberto Michael Patrick | EVP | SELL | $100K–$500K | 1K | $343.41 | Dec 9, 2022 |
| Diliberto Michael Patrick | EVP | EXERCISE | $100K–$500K | 3K | $99.07 | Dec 9, 2022 |
| Herkes Claire | EVP, Conferences | SELL | $50K–$100K | 200 | $356.21 | Dec 5, 2022 |
| Hensel Scott | EVP Global Service… | SELL | $100K–$500K | 571 | $345.09 | Nov 28, 2022 |
| Kranich Robin B | EVP & CHRO | SELL | $100K–$500K | 1K | $334.95 | Nov 22, 2022 |
| Genovese Yvonne | EVP | EXERCISE | N/A | 314 | — | Nov 17, 2022 |
| Genovese Yvonne | EVP | SELL | $50K–$100K | 175 | $340.77 | Nov 17, 2022 |
| Allard Kenneth | EVP & CMO | EXERCISE | $100K–$500K | 2K | $153.70 | Nov 16, 2022 |
| Allard Kenneth | EVP & CMO | SELL | $100K–$500K | 515 | $342.01 | Nov 16, 2022 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 1K | $339.93 | Nov 14, 2022 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 600 | $325.00 | Nov 10, 2022 |
| Herkes Claire | EVP, Conferences | SELL | $100K–$500K | 795 | $324.38 | Nov 10, 2022 |
| Safian Craig | EVP & CFO | SELL | $500K+ | 2K | $318.66 | Nov 8, 2022 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 1K | $324.86 | Nov 4, 2022 |
| Kranich Robin B | EVP & CHRO | EXERCISE | $500K+ | 5K | $114.26 | Nov 4, 2022 |
| Kranich Robin B | EVP & CHRO | SELL | $50K–$100K | 158 | $323.63 | Nov 4, 2022 |
| Safian Craig | EVP & CFO | SELL | $1M+ | 5K | $327.38 | Nov 4, 2022 |
| Safian Craig | EVP & CFO | EXERCISE | $500K+ | 5K | $99.07 | Nov 4, 2022 |
| DYKSTRA KAREN E | Director | SELL | $100K–$500K | 1K | $321.84 | Nov 4, 2022 |
| HALL EUGENE A | CEO | SELL | $1M+ | 17K | $324.94 | Nov 4, 2022 |
| Genovese Yvonne | EVP | SELL | $100K–$500K | 645 | $310.02 | Sep 14, 2022 |
| FUCHS ANNE SUTHERLAND | Director | SELL | $50K–$100K | 300 | $314.52 | Aug 19, 2022 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 1K | $310.00 | Aug 17, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 704 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| J. Stern & Co. LLP | 1.5M | $1M+ | SH |
| Capital International Investors | 4.0M | $1M+ | SH |
| STATE STREET CORP | 3.4M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.0M | $1M+ | SH |
| NORGES BANK | 1.2M | $1M+ | SH |
| HARRIS ASSOCIATES L P | 964K | $1M+ | SH |
| Sustainable Growth Advisers, LP | 853K | $1M+ | SH |
| Madison Asset Management, LLC | 675K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 506K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 459K | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 444K | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 406K | $1M+ | SH |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 378K | $1M+ | SH |
| Pacer Advisors, Inc. | 308K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 304K | $1M+ | SH |
| NZS Capital, LLC | 301K | $1M+ | SH |
| NATIXIS ADVISORS, LLC | 276K | $1M+ | SH |
| Bollard Group LLC | 270K | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1.0M | $1M+ | SH |
| Resona Asset Management Co.,Ltd. | 245K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Capital International Investors
SC 13G · Feb 13, 2026
5.7%
4.1M shares
SC 13G/A · Nov 14, 2025
5.2%
3.9M shares
SC 13G/A · Jul 29, 2025
12.4%
9.6M shares
SC 13G/A · Jul 18, 2025
9.5%
7.3M shares
SC 13G/A · May 15, 2025
4.6%
3.6M shares
SC 13G/A · Nov 14, 2024
4.9%
3.8M shares
SC 13G/A · Feb 14, 2024
5.4%
4.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
11.4%
8.9M shares
SC 13G · Jan 26, 2024
7.8%
6.1M shares
SC 13G/A · Feb 14, 2023
6.0%
4.7M shares
SC 13G/A · Feb 10, 2023
3.5%
2.8M shares
SC 13G/A · Feb 3, 2023
7.9%
6.2M shares
Generation Investment Management LLP
SC 13G/A · Feb 14, 2022
2.7%
2.2M shares
SC 13G/A · Feb 14, 2022
6.2%
5.1M shares
SC 13G/A · Feb 1, 2022
7.6%
6.3M shares