Mary Beth Wilkinson - 30 Jun 2026 Form 4 Insider Report for KLA CORP (KLAC)

Reporting relationship: EVP, CLO and Secretary
Issuer ticker: KLAC
Reported as of: 30 Jun 2026
Net transaction value: -$4,106,038
SEC form: 4
Accepted by SEC: 02 Jul 2026, 16:05:05 UTC
Prior SEC filing: 12 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ Jeffrey S. Cannon, as attorney-in-fact for Mary Beth Wilkinson

Key filing fact

Mary Beth Wilkinson filed Form 4 for KLA CORP (KLAC) on 02 Jul 2026.

Key facts

This page summarizes Mary Beth Wilkinson's Form 4 filing for KLA CORP (KLAC).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 02 Jul 2026, 16:05.

Change

Previous filing in this sequence was filed on 12 Aug 2025.
Current net transaction value: -$4,106,038.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001691769 Primary reporting owner

Wilkinson Mary Beth

Relationship: EVP, CLO and Secretary
Address: ONE TECHNOLOGY DRIVE, MILPITAS
Signature: /s/ Jeffrey S. Cannon, as attorney-in-fact for Mary Beth Wilkinson
Signature date: 02 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KLAC transaction

Common Stock

Tax liability

Transaction value
Shares: -10,260
Change %: -13%
Price: $278.39^*
Shares after: 67,759
Date: 30 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3

KLAC transaction

Common Stock

Sale

Transaction value: $4,106,038
Shares: -14,392
Change %: -21%
Price: $285.30
Shares after: 53,367
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

On August 4, 2022, the reporting person was granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied. On June 30, 2026, 24,651.900 shares vested.

Footnote F2

Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 24,651.900 shares of KLA common stock that vested. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on June 29, 2026.

Footnote F3

The number of shares of KLA common stock includes 53,297.820 shares issuable upon vesting of restricted stock units ("RSUs").

Footnote F4

This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

SEC remarks

Adjusted to reflect a ten-for-one stock split of the registrant's common stock effective after market close on June 11, 2026.