The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | Lorig Brian | EVP, KLA Global Services | Sell(S) | 60K | $208.13 | $12.4M |
| Aug 12, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Sell(S) | 32K | $209.87 | $6.6M |
| Aug 11, 2026 | Wallace Richard P | President and CEO | Sell(S) | 88K | $198.95 | $17.4M |
| Aug 11, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Sell(S) | 33K | $198.95 | $6.6M |
| Aug 10, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell(S) | 2K | $204.56 | $340K |
| Aug 10, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 529 | $204.56 | $108K |
| Aug 7, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 2K | $197.57 | $475K |
| Aug 7, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 521 | $193.22 | $101K |
| Aug 7, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 5K | $193.22 | $876K |
| Aug 7, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 5K | $193.22 | $876K |
| Aug 7, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell(S) | 22K | $197.57 | $4.3M |
| Aug 7, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 1K | $193.22 | $233K |
| Aug 7, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 3K | $193.22 | $556K |
| Aug 7, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 13K | $193.22 | $2.5M |
| Aug 6, 2026 | Wallace Richard P | President and CEO | Grant(A) | 41K | — | $0 |
| Aug 6, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 46K | $192.80 | $9.0M |
| Aug 6, 2026 | Wallace Richard P | President and CEO | Grant(A) | 94K | — | $0 |
| Aug 6, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 87K | $192.80 | $16.9M |
| Aug 6, 2026 | Wallace Richard P | President and CEO | Grant(A) | 353K | — | $0 |
| Aug 6, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 11K | $192.80 | $2.0M |
| Aug 6, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Grant(A) | 25K | — | $0 |
| Aug 6, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 5K | $192.80 | $1.0M |
| Aug 6, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Grant(A) | 25K | — | $0 |
| Aug 6, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 31K | $192.80 | $6.0M |
| Aug 6, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Grant(A) | 62K | — | $0 |
| Aug 6, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 22K | $192.80 | $4.2M |
| Aug 6, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Grant(A) | 87K | — | $0 |
| Aug 6, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 2K | $192.80 | $456K |
| Aug 6, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Grant(A) | 10K | — | $0 |
| Aug 6, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 12K | $192.80 | $2.4M |
| Aug 6, 2026 | Lorig Brian | EVP, KLA Global Services | Grant(A) | 25K | — | $0 |
| Aug 6, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 10K | $192.80 | $1.9M |
| Aug 6, 2026 | Lorig Brian | EVP, KLA Global Services | Grant(A) | 40K | — | $0 |
| Aug 6, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 31K | $192.80 | $6.0M |
| Aug 6, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Grant(A) | 62K | — | $0 |
| Aug 6, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 22K | $192.80 | $4.2M |
| Aug 6, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Grant(A) | 87K | — | $0 |
| Aug 5, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Grant(A) | 5K | — | $0 |
| Aug 5, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Grant(A) | 24K | — | $0 |
| Aug 5, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Grant(A) | 2K | — | $0 |
| Aug 5, 2026 | Lorig Brian | EVP, KLA Global Services | Grant(A) | 16K | — | $0 |
| Aug 5, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Grant(A) | 24K | — | $0 |
| Aug 5, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 5K | $195.50 | $881K |
| Aug 5, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell(S) | 14K | $195.50 | $2.7M |
| Aug 4, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 23K | $182.75 | $4.3M |
| Aug 4, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 8K | $182.75 | $1.4M |
| Aug 4, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 11K | $182.75 | $2.0M |
| Aug 4, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 4K | $182.75 | $675K |
| Aug 4, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 90K | $182.75 | $16.4M |
| Aug 4, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 20K | $182.75 | $3.6M |
| Aug 4, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 22K | $182.75 | $4.1M |
| Aug 4, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 7K | $182.75 | $1.4M |
| Aug 4, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell(S) | 4K | $191.59 | $823K |
| Aug 4, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 8K | $182.75 | $1.4M |
| Aug 4, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 3K | $182.75 | $459K |
| Aug 4, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 2K | $191.59 | $300K |
| Aug 4, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 3K | $182.75 | $608K |
| Aug 4, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 1K | $182.75 | $202K |
| Aug 3, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 730 | $182.82 | $133K |
| Aug 3, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 7K | $182.82 | $1.3M |
| Aug 3, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 2K | $182.82 | $326K |
| Aug 3, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 3K | $182.82 | $600K |
| Aug 3, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 19K | $182.82 | $3.6M |
| Aug 3, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 7K | $182.82 | $1.3M |
| Aug 1, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Tax withholding(F) | 373 | $182.82 | $68K |
| Aug 1, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 5K | $182.82 | $823K |
| Aug 1, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 1K | $182.82 | $245K |
| Aug 1, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 3K | $182.82 | $549K |
| Aug 1, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 13K | $182.82 | $2.4M |
| Aug 1, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 5K | $182.82 | $823K |
| Jul 2, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Sell(S) | 28K | $265.69 | $7.4M |
| Jul 2, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 196 | $265.69 | $52K |
| Jul 1, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Sell(S) | 14K | $285.30 | $4.1M |
| Jun 30, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Other(J) | 196 | $108.33 | $21K |
| Jun 30, 2026 | Higgins Bren D. | EVP & Chief Financial Officer | Tax withholding(F) | 31K | $278.39 | $8.5M |
| Jun 30, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Other(J) | 196 | $108.33 | $21K |
| Jun 30, 2026 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Tax withholding(F) | 31K | $278.39 | $8.5M |
| Jun 30, 2026 | Wilkinson Mary Beth | EVP, CLO and Secretary | Tax withholding(F) | 10K | $278.39 | $2.9M |
| Jun 30, 2026 | Wallace Richard P | President and CEO | Other(J) | 196 | $108.33 | $21K |
| Jun 30, 2026 | Wallace Richard P | President and CEO | Tax withholding(F) | 46K | $278.39 | $12.8M |
| Jun 30, 2026 | Lorig Brian | EVP, KLA Global Services | Other(J) | 196 | $108.33 | $21K |
| Jun 30, 2026 | Lorig Brian | EVP, KLA Global Services | Tax withholding(F) | 12K | $278.39 | $3.4M |
| Jun 30, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Other(J) | 196 | $108.33 | $21K |
| Jun 11, 2026 | Wallace Richard P | President and CEO | Sell(S) | 5K | $2,213.37 | $10.0M |
| May 12, 2026 | Wallace Richard P | President and CEO | Sell(S) | 5K | $1,794.00 | $8.1M |
| May 11, 2026 | Hanley Jeneanne Michelle | Director | Sell(S) | 550 | $1,874.71 | $1.0M |
| May 11, 2026 | Kirloskar Virendra A | SVP & Chief Accounting Officer | Sell(S) | 297 | $1,879.02 | $558K |
| Feb 5, 2026 | Calderoni Robert | Director | Grant(A) | 11 | — | $0 |
| Dec 16, 2025 | Higgins Bren D. | EVP & Chief Financial Officer | Sell(S) | 2K | $1,237.01 | $2.8M |
| Nov 12, 2025 | Khan Ahmad A. | President, Semi. Prod. & Cust. | Gift(G) | 85 | — | $0 |
| Nov 11, 2025 | Wallace Richard P | President and CEO | Sell(S) | 11K | $1,203.10 | $13.0M |
| Nov 11, 2025 | Wallace Richard P | President and CEO | Gift(G) | 804 | — | $0 |
| Nov 5, 2025 | Samath Jamie | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | Hanley Jeneanne Michelle | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | Kennedy Kevin | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | Peng Victor | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | Taylor Susan J.S. | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | McMullen Michael R. | Director | Grant(A) | 204 | — | $0 |
| Nov 5, 2025 | Calderoni Robert | Director | Grant(A) | 257 | — | $0 |
| Nov 5, 2025 | Conley Jason | Director | Grant(A) | 204 | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-02. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for KLAC