Form 4 for KLAC KLA Corporation

Accepted 2026-07-02 16:05:05 ET · period of report 2026-06-30 · accession 0001193125-26-294468 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
T	2026-07-02 16:05	2026-06-30	KLAC	Wilkinson Mary Beth	EVP, CLO, Sec	F - Tax	$278.39	-10.3K	67.8K	-13%	-$2.86M
T	2026-07-02 16:05	2026-07-01	KLAC	Wilkinson Mary Beth	EVP, CLO, Sec	S - Sale	$285.30	-14.4K	53.4K	-21%	-$4.11M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-06-30	F	D	10,259.76	$278.39	67,759.29	D	—	—	(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. (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. (F3) The number of shares of KLA common stock includes 53,297.820 shares issuable upon vesting of restricted stock units ("RSUs").
2	Common	Common Stock	2026-07-01	S	D	14,392	$285.30	53,367.29	D	—	—	(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. (F3) The number of shares of KLA common stock includes 53,297.820 shares issuable upon vesting of restricted stock units ("RSUs").