[Form 4] KLA Corporation Insider Trading Activity

Rhea-AI Filing Summary

Mary Beth Wilkinson, identified as an officer (EVP, CLO and Secretary) of KLA Corporation (KLAC), reported a sale of 1,022 shares of KLA common stock. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 7, 2025, indicating the transaction was pre-arranged under a written plan.

After the reported disposition the reporting person beneficially owns 7,801.906 shares of KLA common stock in total. That total includes 7,794.972 shares issuable upon vesting of restricted stock units (RSUs), as disclosed in the Form 4.

Positive

• Sale executed under a Rule 10b5-1 trading plan, indicating the transaction was pre-arranged and consistent with insider trading compliance procedures

Negative

• None.

Insights

Securities Analyst

TL;DR Routine insider sale under a 10b5-1 plan; transaction size is modest relative to reported personal holdings.

The Form 4 shows a sale of 1,022 shares by an officer who retains 7,801.906 shares post-transaction, including 7,794.972 RSU-related shares. Because the sale was made pursuant to a recorded Rule 10b5-1 plan, it reflects a pre-set disposition schedule rather than an opportunistic market trade. There is no indication in the filing of any additional derivative activity or material changes to holdings beyond the reported sale.

Corporate Governance Expert

TL;DR Use of a documented 10b5-1 plan and attorney-in-fact signature point to compliance-focused disclosure.

The disclosure states the sale was executed under a Rule 10b5-1 trading plan adopted on February 7, 2025, and the Form 4 was signed by an attorney-in-fact. This sequence aligns with standard insider-trading compliance practices, providing pre-established protection for the reporting person. The filing documents beneficial ownership composition, including the bulk of shares tied to RSUs, which is important for understanding economic exposure and potential future vesting-related sales.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wilkinson Mary Beth

(Last) (First) (Middle)

ONE TECHNOLOGY DRIVE

(Street)

MILPITAS CA 95035

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
KLA CORP [ KLAC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, CLO and Secretary

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/08/2025		S		1,022(1)	D	$913	7,801.906(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2025.

2. The number of shares of KLA common stock includes 7,794.972 shares issuable upon vesting of restricted stock units ("RSUs").

	/s/ Jeffrey S. Cannon, as attorney-in-fact for Mary Beth Wilkinson	08/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What shares did Mary Beth Wilkinson sell in the Form 4 for KLAC?

She sold 1,022 shares of KLA common stock as reported on the Form 4.

Was the KLAC sale by Mary Beth Wilkinson part of a trading plan?

Yes. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on February 7, 2025.

How many KLA shares does Mary Beth Wilkinson beneficially own after the reported transaction?

7,801.906 shares of KLA common stock are reported as beneficially owned following the transaction.

How many of the reported KLAC shares are tied to RSUs?

7,794.972 shares are issuable upon vesting of restricted stock units, as disclosed in the filing.

What is Mary Beth Wilkinson’s role at KLA as listed on the Form 4?

She is listed as an officer: EVP, CLO and Secretary of KLA Corporation.