Herkes Claire, EVP of Conferences at Gartner Inc ($IT), made two open market sales of company shares over the past year, totaling about $169,000. Her most recent sale occurred on December 3, 2025. These transactions rank her 8,769th among 11,678 insiders by sales value, well below the average of $8.6 million across about 6.4 transactions per insider. She reported no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 892 | $0.00 | 6,571.0000 | 75,605,000 | 15.71% | 0.00% |
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 280 | $159.75 | 6,291.0000 | 75,605,000 | 4.26% | 0.00% |
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 976 | $0.00 | 0.0000 | 75,605,000 | 100.00% | 0.00% |
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 892 | $0.00 | 892.0000 | 75,605,000 | 50.00% | 0.00% |
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 976 | $0.00 | 5,985.0000 | 75,605,000 | 19.48% | 0.00% |
| Feb. 9, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 306 | $159.75 | 5,679.0000 | 75,605,000 | 5.11% | 0.00% |
| Feb. 8, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 277 | $156.33 | 5,009.0000 | 75,605,000 | 5.24% | 0.00% |
| Feb. 8, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 850 | $0.00 | 5,286.0000 | 75,605,000 | 19.16% | 0.00% |
| Feb. 6, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 214 | $156.33 | 4,436.0000 | 75,605,000 | 4.60% | 0.00% |
| Feb. 6, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 576 | $0.00 | 4,650.0000 | 75,605,000 | 14.14% | 0.00% |
| Feb. 8, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 850 | $0.00 | 1,700.0000 | 75,605,000 | 33.33% | 0.00% |
| Feb. 6, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 576 | $0.00 | 1,727.0000 | 75,605,000 | 25.01% | 0.00% |
| Feb. 5, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Stock Appreciation Rights | 14022 | $0.00 | 14,022.0000 | 75,605,000 | 9999.99% | 0.02% |
| Feb. 5, 2026 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Restricted Stock Units | 2303 | $0.00 | 2,303.0000 | 75,605,000 | 9999.99% | 0.00% |
| Dec. 3, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 367 | $231.56 | 4,074.0000 | 76,758,000 | 8.26% | 0.00% |
| Nov. 28, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | D | Common Stock | 2369 | $232.74 | 4,757.0000 | 76,758,000 | 33.24% | 0.00% |
| Nov. 28, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 316 | $232.74 | 4,441.0000 | 76,758,000 | 6.64% | 0.00% |
| Nov. 28, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Stock Appreciation Rights | 3052 | $0.00 | 0.0000 | 76,758,000 | 100.00% | 0.00% |
| Nov. 28, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 3052 | $180.64 | 7,126.0000 | 76,758,000 | 74.91% | 0.00% |
| May 16, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 188 | $447.17 | 4,074.0000 | 78,338,000 | 4.41% | 0.00% |
| Feb. 10, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 898 | $528.87 | 4,262.0000 | 78,338,000 | 17.40% | 0.00% |
| Feb. 10, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 1937 | $0.00 | 5,160.0000 | 78,338,000 | 60.10% | 0.00% |
| Feb. 10, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 1937 | $0.00 | 0.0000 | 78,338,000 | 100.00% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 892 | $0.00 | 1,784.0000 | 78,338,000 | 33.33% | 0.00% |
| Feb. 8, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 850 | $0.00 | 2,344.0000 | 78,338,000 | 56.89% | 0.00% |
| Feb. 8, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 279 | $529.29 | 2,065.0000 | 78,338,000 | 11.90% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 976 | $0.00 | 3,041.0000 | 78,338,000 | 47.26% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 306 | $529.29 | 2,735.0000 | 78,338,000 | 10.06% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 892 | $0.00 | 3,627.0000 | 78,338,000 | 32.61% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 404 | $529.29 | 3,223.0000 | 78,338,000 | 11.14% | 0.00% |
| Feb. 6, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Restricted Stock Units | 3400 | $0.00 | 3,400.0000 | 78,338,000 | 9999.99% | 0.00% |
| Feb. 6, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Stock Appreciation Rights | 3757 | $0.00 | 3,757.0000 | 78,338,000 | 9999.99% | 0.00% |
| Feb. 8, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 850 | $0.00 | 2,550.0000 | 78,338,000 | 25.00% | 0.00% |
| Feb. 9, 2025 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 976 | $0.00 | 976.0000 | 78,338,000 | 50.00% | 0.00% |
| Nov. 27, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 200 | $521.45 | 1,705.0000 | 78,444,000 | 10.50% | 0.00% |
| Nov. 27, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 211 | $521.04 | 1,494.0000 | 78,444,000 | 12.38% | 0.00% |
| Sept. 13, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 478 | $506.01 | 1,905.0000 | 79,680,000 | 20.06% | 0.00% |
| Aug. 27, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 670 | $483.22 | 2,383.0000 | 79,680,000 | 21.95% | 0.00% |
| July 15, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 394 | $0.00 | 3,236.0000 | 79,680,000 | 13.86% | 0.00% |
| July 15, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 394 | $0.00 | 0.0000 | 79,680,000 | 100.00% | 0.00% |
| July 16, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 183 | $455.02 | 3,053.0000 | 79,680,000 | 5.66% | 0.00% |
| March 14, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | S | Common Stock | 1460 | $475.76 | 2,842.0000 | 79,680,000 | 33.94% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 414 | $463.52 | 2,490.0000 | 79,680,000 | 14.26% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 892 | $0.00 | 2,904.0000 | 79,680,000 | 44.33% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 977 | $0.00 | 3,467.0000 | 79,680,000 | 39.24% | 0.00% |
| Feb. 10, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 1937 | $0.00 | 1,937.0000 | 79,680,000 | 50.00% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 977 | $0.00 | 1,952.0000 | 79,680,000 | 33.36% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 892 | $0.00 | 2,676.0000 | 79,680,000 | 25.00% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Restricted Stock Units | 3568 | $0.00 | 3,568.0000 | 79,680,000 | 9999.99% | 0.00% |
| Feb. 10, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 795 | $463.52 | 4,302.0000 | 79,680,000 | 15.60% | 0.00% |
| Feb. 10, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 1937 | $0.00 | 5,097.0000 | 79,680,000 | 61.30% | 0.00% |
| Feb. 9, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 307 | $463.52 | 3,160.0000 | 79,680,000 | 8.85% | 0.00% |
| Feb. 8, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | A | Stock Appreciation Rights | 3278 | $0.00 | 3,278.0000 | 79,680,000 | 9999.99% | 0.00% |
| Feb. 5, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Common Stock | 486 | $0.00 | 2,180.0000 | 79,680,000 | 28.69% | 0.00% |
| Feb. 5, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | M | Restricted Stock Units | 486 | $0.00 | 0.0000 | 79,680,000 | 100.00% | 0.00% |
| Feb. 5, 2024 | GARTNER INC | $IT | Herkes Claire | EVP, Conferences | F | Common Stock | 168 | $469.79 | 2,012.0000 | 79,680,000 | 7.71% | 0.00% |