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 |
|---|---|---|---|---|---|---|
| Rinello John J | SVP | BUY | $1K–$15K | 50 | $154.13 | Feb 9, 2026 |
| PAGLIUCA STEPHEN G | Director | BUY | $1M+ | 43K | $229.57 | Dec 12, 2025 |
| Herkes Claire | EVP, Conferences | SELL | $50K–$100K | 367 | $231.56 | Dec 5, 2025 |
| Rinello John J | SVP | SELL | $50K–$100K | 220 | $229.57 | Dec 5, 2025 |
| Rinello John J | SVP | SELL | $15K–$50K | 105 | $249.71 | Aug 26, 2025 |
| FUCHS ANNE SUTHERLAND | Director | SELL | $100K–$500K | 655 | $413.29 | Jun 13, 2025 |
| DYKSTRA KAREN E | Director | SELL | $500K+ | 2K | $421.51 | Jun 10, 2025 |
| DYKSTRA KAREN E | Director | EXERCISE | N/A | 555 | — | Jun 10, 2025 |
| Hensel Scott | EVP Global Service… | SELL | $1M+ | 5K | $448.78 | May 22, 2025 |
| Hensel Scott | EVP Global Service… | EXERCISE | $1M+ | 15K | $154.31 | May 22, 2025 |
| Jain Akhil | EVP, Consulting | SELL | $100K–$500K | 625 | $450.00 | May 21, 2025 |
| Herkes Claire | EVP, Conferences | SELL | $50K–$100K | 188 | $447.17 | May 20, 2025 |
| Jain Akhil | EVP, Consulting | SELL | $1K–$15K | 25 | $450.00 | May 19, 2025 |
| Wartinbee William James III | EVP | SELL | $100K–$500K | 538 | $449.09 | May 15, 2025 |
| Safian Craig | EVP & CFO | EXERCISE | $1M+ | 11K | $154.31 | May 14, 2025 |
| Safian Craig | EVP & CFO | SELL | $1M+ | 3K | $450.17 | May 14, 2025 |
| Rinello John J | SVP | SELL | $15K–$50K | 109 | $436.35 | May 9, 2025 |
| Kranich Robin B | EVP & CHRO | SELL | $100K–$500K | 739 | $436.50 | May 9, 2025 |
| Serra Eileen | Director | SELL | $500K+ | 1K | $489.77 | Feb 26, 2025 |
| Herkes Claire | EVP, Conferences | SELL | $100K–$500K | 411 | $521.24 | Dec 2, 2024 |
| SMITH JAMES C | Director | SELL | $1M+ | 5K | $524.02 | Nov 27, 2024 |
| Bisson Peter | Director | SELL | $500K+ | 2K | $528.61 | Nov 19, 2024 |
| Hensel Scott | EVP Global Service… | SELL | $500K+ | 2K | $555.00 | Nov 15, 2024 |
| SMITH JAMES C | Director | SELL | $1M+ | 13K | $552.79 | Nov 15, 2024 |
| Dawkins Alwyn | EVP | SELL | $500K+ | 1K | $550.34 | Nov 14, 2024 |
| Jain Akhil | EVP, Consulting | EXERCISE | $100K–$500K | 800 | $180.64 | Nov 14, 2024 |
| Jain Akhil | EVP, Consulting | SELL | $100K–$500K | 299 | $554.02 | Nov 14, 2024 |
| Sribar Valentin | EVP | SELL | $100K–$500K | 860 | $553.00 | Nov 13, 2024 |
| SMITH JAMES C | Director | SELL | $1M+ | 23K | $548.48 | Nov 13, 2024 |
| Safian Craig | EVP & CFO | SELL | $1M+ | 4K | $550.81 | Nov 13, 2024 |
| Safian Craig | EVP & CFO | EXERCISE | $1M+ | 10K | $154.31 | Nov 13, 2024 |
| Allard Kenneth | EVP, Digital Markets | EXERCISE | $500K+ | 5K | $154.31 | Nov 13, 2024 |
| Allard Kenneth | EVP, Digital Markets | SELL | $500K+ | 2K | $548.88 | Nov 13, 2024 |
| Jain Akhil | EVP, Consulting | EXERCISE | $100K–$500K | 600 | $180.64 | Nov 12, 2024 |
| Jain Akhil | EVP, Consulting | SELL | $100K–$500K | 222 | $549.00 | Nov 12, 2024 |
| HALL EUGENE A | Chairman and CEO | SELL | $1M+ | 18K | $546.24 | Nov 12, 2024 |
| Dawkins Alwyn | EVP | SELL | $1M+ | 2K | $546.80 | Nov 12, 2024 |
| Beck Joseph P. | EVP | EXERCISE | $500K+ | 6K | $143.01 | Nov 12, 2024 |
| Beck Joseph P. | EVP | SELL | $1M+ | 2K | $553.34 | Nov 12, 2024 |
| DYKSTRA KAREN E | Director | SELL | $500K+ | 2K | $529.02 | Nov 8, 2024 |
| SMITH JAMES C | Director | SELL | $1M+ | 14K | $537.20 | Nov 8, 2024 |
| Hensel Scott | EVP Global Service… | SELL | $1M+ | 6K | $490.00 | Sep 3, 2024 |
| Kranich Robin B | EVP & CHRO | SELL | $1M+ | 4K | $490.00 | Sep 3, 2024 |
| Dawkins Alwyn | EVP | SELL | $100K–$500K | 1K | $489.55 | Sep 3, 2024 |
| Herkes Claire | EVP, Conferences | SELL | $100K–$500K | 670 | $483.22 | Aug 29, 2024 |
| Genovese Yvonne | EVP | SELL | $100K–$500K | 443 | $483.62 | Aug 28, 2024 |
| Jain Akhil | EVP, Consulting | SELL | $100K–$500K | 400 | $485.00 | Aug 19, 2024 |
| Safian Craig | EVP & CFO | SELL | $1M+ | 6K | $483.57 | Aug 19, 2024 |
| Dawkins Alwyn | EVP | SELL | $500K+ | 1K | $505.49 | Aug 2, 2024 |
| Dawkins Alwyn | EVP | EXERCISE | $1M+ | 16K | $143.01 | Aug 2, 2024 |
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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