KLA (KLAC) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
KLA Corporation (KLAC) insider buying and selling: no purchases, 24 sales
87 Form 4 Table I transactions filed with the SEC by KLA Corporation insiders between 2025-09-02 and 2026-09-16 (15-month history): 0 open-market purchases and 24 sales, plus 63 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a sale of $17.4M by Wallace Richard P on 2026-08-11.
KLA insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, KLA insiders filed 22 sales worth $112.3M on the open market, and no purchases.
The biggest seller was Wallace Richard P (President and CEO): $60.9M in 5 sales, out of 7 different sellers.
The largest trade of the period was a sale of $17.4M on Aug 11, 2026, by Wallace Richard P (President and CEO), under a 10b5-1 plan. Form 4 on sec.gov (0001193125-26-346811).
Of the 22 sales, 20 (91%, $110.7M) carry the 10b5-1 plan flag on the Form 4, meaning they were scheduled months ahead; the other 2 do not.
The last three months show 13 sales, against 7 in the three before. The latest sale from Sep 15, 2026.
Against its sector (Technology, 85 companies with an insider page on this site), over the same dates the median is 22 sales and 0 purchases on the open market. KLA has more sales than 40 of the other 84, ranks 27 of 85 by net dollars sold, and 32 of the 85 have at least one purchase.
The 20 most important trades
With no open-market purchases, the table starts with KLAC's sales, largest first. The full history is in the tool above, already searched.
See all 87 KLAC trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2026-08-11 | 2026-08-12 | Wallace Richard P | President and CEO | $17.4M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. F2 The number of shares of KLA common stock includes 386,970.215 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2025-11-11 | 2025-11-13 | Wallace Richard P | President and CEO | $13.0M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 1, 2024. F2 The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of restriced stock units ("RSUs"). | SEC |
| 2026-08-13 | 2026-08-14 | Lorig Brian | EVP, KLA Global Services | $12.4M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 14, 2026. F2 The number of shares of KLA common stock includes 71,918.092 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-09-15 | 2026-09-16 | Wallace Richard P | President and CEO | $12.4M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. F2 The number of shares of KLA common stock includes 386,970.215 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2025-08-29 | 2025-09-02 | Khan Ahmad A. | President, Semi. Prod. & Cust. | $12.1M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2025. F2 The number of shares of KLA common stock includes 21,716.968 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-06-11 | 2026-06-11 | Wallace Richard P | President and CEO | $10.0M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. F2 The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-05-12 | 2026-05-12 | Wallace Richard P | President and CEO | $8.1M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. F2 The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of restricted stocck units ("RSUs"). | SEC |
| 2026-07-02 | 2026-07-06 | Higgins Bren D. | EVP & Chief Financial Officer | $7.4M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 5, 2025. F2 The number of shares of KLA common stock includes 152,532.880 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-12 | 2026-08-13 | Higgins Bren D. | EVP & Chief Financial Officer | $6.6M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 11, 2026. F2 The number of shares of KLA common stock includes 128,244.613 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-11 | 2026-08-12 | Khan Ahmad A. | President, Semi. Prod. & Cust. | $6.6M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 11, 2026. F2 The number of shares of KLA common stock includes 128,244.613 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-07 | 2026-08-10 | Wilkinson Mary Beth | EVP, CLO and Secretary | $4.3M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF3 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026. F2 The number of shares of KLA common stock includes 36,957.766 shares issuable upon vesting of RSUs. | SEC |
| 2025-09-05 | 2025-09-09 | Khan Ahmad A. | President, Semi. Prod. & Cust. | $4.1M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2025. F2 The number of shares of KLA common stock includes 21,716.968 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-07-01 | 2026-07-02 | Wilkinson Mary Beth | EVP, CLO and Secretary | $4.1M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF4 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026. F3 The number of shares of KLA common stock includes 53,297.820 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2025-12-16 | 2025-12-18 | Higgins Bren D. | EVP & Chief Financial Officer | $2.8M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 5, 2025. F2 The number of shares of KLA common stock includes 21,418.468 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-05 | 2026-08-05 | Wilkinson Mary Beth | EVP, CLO and Secretary | $2.7M | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026. F2 The number of shares of KLA common stock includes 22,037.820 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-05-11 | 2026-05-12 | Hanley Jeneanne Michelle | Director | $1.0M | S — Open-market sale2 Form 4 footnotesF1 Represents the weighted average sales price for the shares. The sales prices ranged from $1,874.64 to $1,875.08. The Reporting Person will provide upon request full information regarding the number of shares sold at each separate price. F2 The number of shares of KLA common stock includes 203.732 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-05 | 2026-08-05 | Kirloskar Virendra A | SVP & Chief Accounting Officer | $881k | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF1 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on Februry 18, 2026. F2 The number of shares of KLA common stock includes 7,911.390 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-04 | 2026-08-04 | Wilkinson Mary Beth | EVP, CLO and Secretary | $823k | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF5 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026. F4 The number of shares of KLA common stock includes 22,037.820 shares issuable upon vesting of restricted stock units RSUs. | SEC |
| 2026-05-11 | 2026-05-12 | Kirloskar Virendra A | SVP & Chief Accounting Officer | $558k | S — Open-market saleForm 4 footnoteF1 The number of shares of KLA common stock includes 1,951.639 shares issuable upon vesting of restricted stock units ("RSUs"). | SEC |
| 2026-08-07 | 2026-08-10 | Kirloskar Virendra A | SVP & Chief Accounting Officer | $475k | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF3 This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026. F2 The number of shares of KLA common stock includes 13,180.540 shares issuable upon vesting of RSUs. | SEC |
The period balance: money in, money out
In the Form 4 filings submitted between Sep 2, 2025 and Sep 16, 2026 there is not one open-market purchase of KLA Corporation: 24 sales worth $128.5M and zero dollars bought.
Only codes P and S count, where an insider puts in or takes out their own money. A selling balance like KLA Corporation's is the norm in the S&P 500, where much of the pay comes as stock. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| F | Tax withholding (shares surrendered for taxes) | 35 | $143.7M |
| S | Open-market sale | 24 | $128.5M |
| A | Grant or award | 21 | $0 |
| J | Other transaction (explained in the filing) | 5 | $106k |
| G | Gift | 2 | $0 |
| Total | Everything filed in the period | 87 | $272.4M |
23 of the 87 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 15 distinct people or entities have filed KLA Corporation transactions: none bought on the open market and 7 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
Of the 7 who sold on the open market (24 sales in all), the three biggest sellers account for $100.4M of the $128.5M: 78% of the money in three people.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| Wallace Richard P | President and CEO | 14 | — | $60.9M (5) | 2026-09-16 |
| Khan Ahmad A. | President, Semi. Prod. & Cust. | 13 | — | $22.8M (3) | 2026-08-12 |
| Higgins Bren D. | EVP & Chief Financial Officer | 12 | — | $16.8M (3) | 2026-08-13 |
| Lorig Brian | EVP, KLA Global Services | 10 | — | $12.4M (1) | 2026-08-14 |
| Wilkinson Mary Beth | EVP, CLO and Secretary | 13 | — | $12.3M (5) | 2026-08-11 |
| Kirloskar Virendra A | SVP & Chief Accounting Officer | 14 | — | $2.4M (6) | 2026-08-11 |
| Hanley Jeneanne Michelle | Director | 2 | — | $1.0M (1) | 2026-05-12 |
| Calderoni Robert | Director | 2 | — | — | 2026-02-06 |
Shown here are the 8 who moved the most money, out of 15. The rest are in the full history, one link above. The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Aug 2026: 0 purchases and 12 sales, worth $53.0M. 6 of the 15 months have none.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 1 | $12.1M |
| Sep 2025 | 0 | $0 | 1 | $4.1M |
| Oct 2025 | 0 | $0 | 0 | $0 |
| Nov 2025 | 0 | $0 | 1 | $13.0M |
| Dec 2025 | 0 | $0 | 1 | $2.8M |
| Jan 2026 | 0 | $0 | 0 | $0 |
| Feb 2026 | 0 | $0 | 0 | $0 |
| Mar 2026 | 0 | $0 | 0 | $0 |
| Apr 2026 | 0 | $0 | 0 | $0 |
| May 2026 | 0 | $0 | 3 | $9.7M |
| Jun 2026 | 0 | $0 | 1 | $10.0M |
| Jul 2026 | 0 | $0 | 3 | $11.5M |
| Aug 2026 | 0 | $0 | 12 | $53.0M |
| Sep 2026 | 0 | $0 | 1 | $12.4M |
| Oct 2026 | 0 | $0 | 0 | $0 |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
KLA Corporation (KLAC) analysis page →
Other Technology companies with insider trades
All 500 are listed in the section index →
Which insiders are buying their own company stock →
How to read this data
18 of the 20 sales in the table are flagged as scheduled (10b5-1 plan): signed months ahead and executed automatically, so they say nothing about what the insider thinks today. KLA has no open-market purchase (code P) in the history, the most common case in the S&P 500: insiders are already paid in stock. The latest filing is from Sep 16, 2026, and a Form 4 arrives up to two business days after the trade.
20 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.