| 2025-12-16 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 2,254 | $1,237.01 | $2,788,220.54 | -6.6% | → |
| 2025-11-11 | WALLACE RICHARD P | President and CEO | Sell | 10,803 | $1,203.10 | $12,997,089.30 | -11.7% | → |
| 2025-09-05 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Sell | 4,564 | $900.00 | $4,107,600.00 | -16.7% | → |
| 2025-08-29 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Sell | 13,716 | $881.50 | $12,090,654.00 | -33.4% | → |
| 2025-08-20 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 2,301 | $878.53 | $2,021,497.53 | -6.3% | → |
| 2025-08-12 | WALLACE RICHARD P | President and CEO | Sell | 10,801 | $913.68 | $9,868,657.68 | -10.4% | → |
| 2025-08-12 | Lorig Brian | EVP, KLA Global Services | Sell | 8,049 | $913.68 | $7,354,210.32 | -41.2% | → |
| 2025-08-08 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 338 | $913.00 | $308,594.00 | -13.0% | → |
| 2025-08-08 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 1,022 | $913.00 | $933,086.00 | -11.6% | → |
| 2025-08-05 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 1,920 | $917.00 | $1,760,640.00 | -44.4% | → |
| 2025-08-05 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 511 | $917.00 | $468,587.00 | -30.5% | → |
| 2025-08-04 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 763 | $896.75 | $684,220.25 | -11.7% | → |
| 2025-08-04 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 320 | $896.75 | $286,960.00 | -13.1% | → |
| 2025-07-02 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 39 | $891.50 | $34,768.50 | -1.5% | → |
| 2025-06-30 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 1,320 | $891.16 | $1,176,331.20 | -15.7% | → |
| 2025-05-22 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 1,019 | $766.46 | $781,022.74 | -3.5% | → |
| 2025-05-06 | WALLACE RICHARD P | President and CEO | Sell | 10,802 | $683.30 | $7,381,006.60 | -12.1% | → |
| 2025-03-25 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 7,008 | $724.62 | $5,078,136.96 | -19.6% | → |
| 2024-11-12 | WALLACE RICHARD P | President and CEO | Sell | 14,306 | $663.01 | $9,485,021.06 | -13.7% | → |
| 2024-08-19 | Khan Ahmad A. | President, Semi Proc. Control | Sell | 9,676 | $818.51 | $7,919,902.76 | -23.1% | → |
| 2024-08-07 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 5,361 | $740.63 | $3,970,517.43 | -13.0% | → |
| 2024-08-07 | Lorig Brian | Executive Vice President | Sell | 2,038 | $740.63 | $1,509,403.94 | -12.2% | → |
| 2024-08-06 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 814 | $705.01 | $573,878.14 | -23.7% | → |
| 2024-08-06 | Lorig Brian | Executive Vice President | Sell | 1,291 | $705.01 | $910,167.91 | -7.2% | → |
| 2024-08-06 | WALLACE RICHARD P | President and CEO | Sell | 17,437 | $705.01 | $12,293,259.37 | -14.2% | → |
| 2024-08-05 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 825 | $649.84 | $536,118.00 | -16.3% | → |
| 2024-08-05 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 2,611 | $652.17 | $1,702,820.96 | -12.2% | → |
| 2024-08-05 | Lorig Brian | Executive Vice President | Sell | 709 | $649.84 | $460,736.56 | -3.4% | → |
| 2024-07-02 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 44 | $819.40 | $36,053.60 | -1.2% | → |
| 2024-07-02 | Lorig Brian | Executive Vice President | Sell | 44 | $819.40 | $36,053.60 | -0.3% | → |
| 2024-05-23 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 1,019 | $788.58 | $803,563.02 | -3.1% | → |
| 2024-05-21 | Khan Ahmad A. | President, Semi Proc. Control | Sell | 7,833 | $760.00 | $5,953,080.00 | -19.6% | → |
| 2024-05-07 | WALLACE RICHARD P | President and CEO | Sell | 14,009 | $716.63 | $10,039,269.67 | -13.1% | → |
| 2024-05-06 | Lorig Brian | Executive Vice President | Sell | 3,537 | $699.16 | $2,472,928.92 | -19.9% | → |
| 2024-03-26 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 7,018 | $705.04 | $4,947,970.72 | -17.8% | → |
| 2024-03-25 | Donzella Oreste | Executive Vice President | Sell | 3,257 | $697.85 | $2,272,897.45 | -16.1% | → |
| 2023-11-17 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 1,621 | $531.77 | $861,999.17 | -3.4% | → |
| 2023-11-15 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 430 | $550.00 | $236,500.00 | -6.3% | → |
| 2023-09-22 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 3,155 | $451.51 | $1,424,514.05 | -31.7% | → |
| 2023-09-06 | Hanley Jeneanne Michelle | - | Sell | 500 | $508.97 | $254,485.70 | -7.5% | → |
| 2023-09-05 | Donzella Oreste | Executive Vice President | Sell | 2,633 | $507.01 | $1,334,957.33 | -10.0% | → |
| 2023-09-01 | Khan Ahmad A. | President, Semi Proc. Control | Sell | 13,963 | $503.58 | $7,031,487.54 | -22.8% | → |
| 2023-08-14 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell | 2,621 | $474.55 | $1,243,795.55 | -41.5% | → |
| 2023-08-07 | WALLACE RICHARD P | President and CEO | Sell | 5,786 | $502.82 | $2,909,333.16 | -1.9% | → |
| 2023-08-07 | Higgins Bren D. | EVP & Chief Financial Officer | Sell | 3,061 | $500.00 | $1,530,500.00 | -6.0% | → |
| 2023-08-07 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell | 870 | $500.00 | $435,000.00 | -6.6% | → |
| 2023-08-07 | Lorig Brian | Executive Vice President | Sell | 2,738 | $500.00 | $1,369,000.00 | -11.6% | → |