LAM Research (LRCX) Chief Legal Officer sells 1,500 shares in open market

Rhea-AI Filing Summary

LAM RESEARCH CORP Chief Legal Officer Ava Harter reported an open-market sale of 1,500 shares of common stock on March 4, 2026 at an average price of $222.66 per share. After this transaction, she directly owns 53,205.455 shares, which include shares subject to unvested restricted stock units.

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

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

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^*

Harter Ava

(Last) (First) (Middle)

4650 CUSHING PKWY

(Street)

FREMONT CA 94538

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
LAM RESEARCH CORP [ LRCX ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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	03/04/2026		S		1,500	D	$222.66	53,205.455(1)	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. The amount reported includes shares subject to unvested restricted stock units.

Remarks:

	Marta Woods by Power of Attorney	03/05/2026
	** 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).
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FAQ

What insider transaction did LAM RESEARCH CORP (LRCX) disclose for Ava Harter?

LAM RESEARCH CORP reported that Chief Legal Officer Ava Harter sold 1,500 shares of common stock in an open-market transaction. The sale occurred on March 4, 2026, and was reported on a Form 4 insider trading filing.

At what price did Ava Harter sell LAM RESEARCH (LRCX) shares?

Ava Harter sold 1,500 LAM RESEARCH common shares at an average price of $222.66 per share. This reflects an open-market sale, as described by transaction code S in the Form 4 filing.

How many LAM RESEARCH (LRCX) shares does Ava Harter own after the sale?

After the open-market sale, Ava Harter directly owns 53,205.455 shares of LAM RESEARCH common stock. This figure includes shares that are subject to unvested restricted stock units, according to the Form 4 footnote.

What does transaction code S mean in the LRCX Form 4 filing?

Transaction code S in the LRCX Form 4 indicates a sale of securities in the open market or a private transaction. In this case, it reflects Ava Harter’s open-market sale of 1,500 shares of LAM RESEARCH common stock.

Does Ava Harter’s reported ownership in LRCX include unvested restricted stock units?

Yes. The Form 4 footnote states that the amount reported as owned by Ava Harter includes shares subject to unvested restricted stock units. These units represent equity awards that have not yet fully vested.