KLAC (KLA Corporation Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by KLAC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Brian Lorig | EVP, KLA Global Services | Sell | — | — |
| 2026-08-13 | Bren D. Higgins | EVP & Chief Financial Officer | Sell | — | — |
| 2026-08-12 | RICHARD P WALLACE | President and CEO | Sell | — | — |
| 2026-08-12 | Ahmad A. Khan | President, Semi. Prod. & Cust. | Sell | — | — |
| 2026-08-11 | Mary Beth Wilkinson | EVP, CLO and Secretary | Sell | — | — |
| 2026-08-11 | Virendra A Kirloskar | SVP & Chief Accounting Officer | Sell | — | — |
| 2026-08-10 | Bren D. Higgins | EVP & Chief Financial Officer | F | — | — |
| 2026-08-10 | RICHARD P WALLACE | President and CEO | F | — | — |
| 2026-08-10 | Virendra A Kirloskar | SVP & Chief Accounting Officer | MIXED | — | — |
| 2026-08-10 | Mary Beth Wilkinson | EVP, CLO and Secretary | MIXED | — | — |
| 2026-08-10 | Ahmad A. Khan | President, Semi. Prod. & Cust. | F | — | — |
| 2026-08-10 | Brian Lorig | EVP, KLA Global Services | F | — | — |
| 2026-08-07 | Ahmad A. Khan | President, Semi. Prod. & Cust. | MIXED | — | — |
| 2026-08-07 | Bren D. Higgins | EVP & Chief Financial Officer | MIXED | — | — |
| 2026-08-07 | Virendra A Kirloskar | SVP & Chief Accounting Officer | MIXED | — | — |
| 2026-08-07 | RICHARD P WALLACE | President and CEO | MIXED | — | — |
| 2026-08-07 | Mary Beth Wilkinson | EVP, CLO and Secretary | MIXED | — | — |
| 2026-08-07 | Brian Lorig | EVP, KLA Global Services | MIXED | — | — |
| 2026-08-07 | Virendra A Kirloskar | SVP & Chief Accounting Officer | MIXED | — | — |
| 2026-08-07 | Ahmad A. Khan | President, Semi. Prod. & Cust. | MIXED | — | — |
| 2026-08-07 | Bren D. Higgins | EVP & Chief Financial Officer | MIXED | — | — |
| 2026-08-07 | Brian Lorig | EVP, KLA Global Services | MIXED | — | — |
| 2026-08-07 | RICHARD P WALLACE | President and CEO | MIXED | — | — |
| 2026-08-07 | Mary Beth Wilkinson | EVP, CLO and Secretary | MIXED | — | — |
| 2026-08-05 | Mary Beth Wilkinson | EVP, CLO and Secretary | Sell | — | — |
| 2026-08-05 | Virendra A Kirloskar | SVP & Chief Accounting Officer | Sell | — | — |
| 2026-08-04 | Brian Lorig | EVP, KLA Global Services | F | — | — |
| 2026-08-04 | Mary Beth Wilkinson | EVP, CLO and Secretary | MIXED | — | — |
| 2026-08-04 | RICHARD P WALLACE | President and CEO | F | — | — |
| 2026-08-04 | Virendra A Kirloskar | SVP & Chief Accounting Officer | MIXED | — | — |
| 2026-08-04 | Ahmad A. Khan | President, Semi. Prod. & Cust. | F | — | — |
| 2026-08-04 | Bren D. Higgins | EVP & Chief Financial Officer | F | — | — |
| 2026-08-03 | Bren D. Higgins | EVP & Chief Financial Officer | F | — | — |
| 2026-08-03 | Brian Lorig | EVP, KLA Global Services | F | — | — |
| 2026-08-03 | RICHARD P WALLACE | President and CEO | F | — | — |
| 2026-08-03 | Virendra A Kirloskar | SVP & Chief Accounting Officer | F | — | — |
| 2026-08-03 | Ahmad A. Khan | President, Semi. Prod. & Cust. | F | — | — |
| 2026-08-03 | Mary Beth Wilkinson | EVP, CLO and Secretary | F | — | — |
| 2026-07-06 | Virendra A Kirloskar | SVP & Chief Accounting Officer | MIXED | — | — |
| 2026-07-06 | Bren D. Higgins | EVP & Chief Financial Officer | Sell | — | — |
| 2026-07-02 | Ahmad A. Khan | President, Semi. Prod. & Cust. | MIXED | — | — |
| 2026-07-02 | RICHARD P WALLACE | President and CEO | MIXED | — | — |
| 2026-07-02 | Bren D. Higgins | EVP & Chief Financial Officer | MIXED | — | — |
| 2026-07-02 | Brian Lorig | EVP, KLA Global Services | MIXED | — | — |
| 2026-07-02 | Mary Beth Wilkinson | EVP, CLO and Secretary | MIXED | — | — |
| 2026-06-11 | RICHARD P WALLACE | President and CEO | Sell | — | — |
| 2026-05-12 | Jeneanne Michelle Hanley | Director | Sell | — | — |
| 2026-05-12 | Virendra A Kirloskar | SVP & Chief Accounting Officer | Sell | — | — |
| 2026-05-12 | RICHARD P WALLACE | President and CEO | Sell | — | — |
| 2026-02-06 | ROBERT CALDERONI | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chairman of the Board | 14,653,750 | — |
| — | Director | 12,753,850 | — |
| — | President and CEO | 778,943 | — |
| — | President and COO | 524,730 | — |
| — | Director | 391,720 | — |
| — | CEO - Orbotech Ltd. | 320,990 | — |
| — | EVP & Chief Financial Officer | 307,815 | — |
| — | Executive Vice President | 305,250 | — |
| — | Director | 302,370 | — |
| — | Director | 260,360 | — |
| — | President, Semi. Prod. & Cust. | 238,044 | — |
| — | Director | 225,710 | — |
| — | Director | 213,210 | — |
| — | CEO - Orbotech Ltd. | 193,040 | — |
| — | Executive VP & General Counsel | 184,240 | — |
| — | Executive Vice President | 169,670 | — |
| — | Director | 152,305 | — |
| — | Director | 150,280 | — |
| — | Director | 147,660 | — |
| — | Director | 131,560 | — |
| — | Director | 116,930 | — |
| — | Executive Vice President | 84,250 | — |
| — | Director | 80,357 | — |
| — | EVP, KLA Global Services | 77,681 | — |
| — | Director | 58,157 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the KLAC quote page; the site-wide leaderboard is on the insider transactions hub.