Form4insider filings, from the source

Company · CIK 0000319201 · SIC 3827 — Optical Instruments & Lenses · Nasdaq

KLA CORP · KLAC

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $76.9M · 16net −$76.9M
$10k$10k$1M$1M$100M$100MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 15, 2026 SForm 4 →Sep 16, 4:05 pm EDTRichard P WallacePresident and CEO72,019$171.88$12,378,626706,925−9.25%10b5-1
Aug 13, 2026 SForm 4 →Aug 14, 4:05 pm EDTBrian LorigEVP, KLA Global Services59,586$208.13$12,401,63477,681−43.4%10b5-1
Aug 12, 2026 SForm 4 →Aug 13, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer31,500$209.87$6,610,905307,815−9.28%10b5-1
Aug 11, 2026 SForm 4 →Aug 12, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.33,180$198.95$6,601,161238,045−12.2%10b5-1
Aug 11, 2026 SForm 4 →Aug 12, 4:05 pm EDTRichard P WallacePresident and CEO87,568$198.95$17,421,654778,944−10.1%10b5-1
Aug 10, 2026 SForm 4 →Aug 11, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer529$204.56$108,21213,242−3.84%10b5-1
Aug 10, 2026 SForm 4 →Aug 11, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary1,661$204.56$339,77437,032−4.29%10b5-1
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTRichard P WallacePresident and CEO12,762$193.22$2,465,853866,512—
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTBrian LorigEVP, KLA Global Services2,876$193.22$555,631137,267—
Aug 7, 2026 SForm 4 →Aug 10, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary21,831$197.57$4,313,15138,693−36.1%10b5-1
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary1,208$193.22$233,46260,524—10b5-1
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.4,532$193.22$875,598271,225—
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer4,532$193.22$875,598339,315—
Aug 7, 2026 SForm 4 →Aug 10, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer2,405$197.57$475,15613,771−14.9%10b5-1
Aug 7, 2026 FForm 4 →Aug 10, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer521$193.22$100,58916,176—10b5-1
Aug 6, 2026 AFForm 4 →Aug 7, 4:05 pm EDTRichard P WallacePresident and CEO621,386$192.80$25,825,233879,273—
Aug 5, 2026 AFForm 4 →Aug 7, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.226,953$192.80$10,150,317275,757—
Aug 5, 2026 AFForm 4 →Aug 7, 4:05 pm EDTBrian LorigEVP, KLA Global Services102,926$192.80$4,288,398140,143—
Aug 5, 2026 AFForm 4 →Aug 7, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer13,454$192.80$455,96616,697—
Aug 5, 2026 AFForm 4 →Aug 7, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer226,953$192.80$10,150,317343,847—
Aug 5, 2026 AFForm 4 →Aug 7, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary71,372$192.80$3,060,65761,732—
Aug 5, 2026 SForm 4 →Aug 5, 5:16 pm EDTMary Beth WilkinsonEVP, CLO and Secretary13,802$195.50$2,698,29122,110−38.4%10b5-1
Aug 5, 2026 SForm 4 →Aug 5, 5:14 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer4,504$195.50$880,5327,972−36.1%10b5-1
Aug 4, 2026 SForm 4 →Aug 4, 5:27 pm EDTMary Beth WilkinsonEVP, CLO and Secretary4,295$191.59$822,87935,912−10.7%10b5-1
Aug 4, 2026 FForm 4 →Aug 4, 5:27 pm EDTMary Beth WilkinsonEVP, CLO and Secretary10,037$182.75$1,834,19640,207—10b5-1
Aug 4, 2026 SForm 4 →Aug 4, 5:26 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer1,565$191.59$299,83812,476−11.1%10b5-1
Aug 4, 2026 FForm 4 →Aug 4, 5:26 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer4,430$182.75$809,57814,041—10b5-1
Aug 4, 2026 FForm 4 →Aug 4, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer29,557$182.75$5,401,563222,187—
Aug 4, 2026 FForm 4 →Aug 4, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.31,037$182.75$5,672,027154,097—
Aug 4, 2026 FForm 4 →Aug 4, 4:05 pm EDTBrian LorigEVP, KLA Global Services14,775$182.75$2,700,10281,702—
Aug 4, 2026 FForm 4 →Aug 4, 4:05 pm EDTRichard P WallacePresident and CEO109,738$182.75$20,054,600525,785—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.11,728$182.82$2,144,060185,134—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTRichard P WallacePresident and CEO32,653$182.82$5,969,693635,522—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTBrian LorigEVP, KLA Global Services6,287$182.82$1,149,34396,477—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary3,124$182.82$571,09750,243—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer11,728$182.82$2,144,060251,744—
Aug 1, 2026 FForm 4 →Aug 3, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer1,104$182.82$201,76918,471—
Jul 2, 2026 SForm 4 →Jul 6, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer27,701$265.69$7,359,879263,472−9.51%10b5-1
Jul 2, 2026 SForm 4 →Jul 6, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer196$265.69$52,07519,575−0.99%10b5-1
Jul 1, 2026 SForm 4 →Jul 2, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary14,392$285.30$4,106,03853,367−21.2%10b5-1
Jun 30, 2026 JForm 4 →Jul 6, 4:05 pm EDTVirendra A KirloskarSVP & Chief Accounting Officer196$108.33$21,25019,771—10b5-1 late
Jun 30, 2026 FJForm 4 →Jul 2, 4:05 pm EDTBrian LorigEVP, KLA Global Services12,419$275.70$3,423,848102,764—
Jun 30, 2026 FJForm 4 →Jul 2, 4:05 pm EDTBren D. HigginsEVP & Chief Financial Officer30,763$277.31$8,530,787291,173—
Jun 30, 2026 FJForm 4 →Jul 2, 4:05 pm EDTRichard P WallacePresident and CEO46,047$277.67$12,785,555668,176—
Jun 30, 2026 FForm 4 →Jul 2, 4:05 pm EDTMary Beth WilkinsonEVP, CLO and Secretary10,260$278.39$2,856,21667,759—10b5-1
Jun 30, 2026 FJForm 4 →Jul 2, 4:05 pm EDTAhmad A. KhanPresident, Semi. Prod. & Cust.30,763$277.31$8,530,787196,862—

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.