Lam Research director Bethany Mayer sells 719 shares

The reported post-sale positions were 916 shares held directly and 20,995 shares listed as held indirectly “By Trust.”

Available on EDGAR 11/03/2026 - 02:58 PM EST Accepted by SEC EDGAR 11/03/2026 - 02:58 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Lam Research Corp. (LRCX) director Bethany Mayer sold 719 shares of Common Stock at $242.59 per share on November 2, 2026. The sale was made pursuant to a Rule 10b5-1 trading plan adopted November 12, 2025. After the sale, Mayer directly held 916 shares; a separate indirect holding listed as “By Trust” was 20,995 shares.

Insider Trade Summary 10b5-1

Net Seller: 719 shares

Net Sell 1 txn

Insider Mayer Bethany

Role Director

Sold 719 shs ($174K)

Share of Position Sold 44.0%

Type	Security	Shares	Price	Value
Sale	Common Stock F1	719	$242.59	$174K
Holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 916 shares (Direct); Common Stock — 20,995 shares (Indirect, By Trust)

Holdings Before and After: Common Stock, 1,635 to 916 shares (Direct)

Other Insiders: 1 other insider reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (1)

1. F1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2025.

Key Figures

Shares sold: 719 shares Sale price per share: $242.59 per share Direct shares after sale: 916 shares +1 more

4 metrics

Shares sold 719 shares November 2, 2026

Sale price per share $242.59 per share Sale on November 2, 2026

Direct shares after sale 916 shares Reported after the November 2, 2026 sale

Indirect shares held by trust 20,995 shares Holding listed as “By Trust”

Key Terms

Rule 10b5-1 trading plan, Common Stock

2 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Common Stock financial

"719 shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many LRCX shares did Bethany Mayer sell, and at what price?

Bethany Mayer, a director of Lam Research Corp. (LRCX), sold 719 shares of Common Stock at $242.59 per share on November 2, 2026. The sale was made pursuant to a Rule 10b5-1 trading plan adopted November 12, 2025. Afterward, the reported holdings were 916 shares directly and 20,995 shares indirectly, listed as “By Trust.”

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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^*

Mayer Bethany

(Last) (First) (Middle)

C/O LAM RESEARCH CORPORATION

4650 CUSHING PARKWAY

(Street)

FREMONT CALIFORNIA 94538

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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

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

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

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	11/02/2026		S		719(1)	D	$242.59	916	D
Common Stock								20,995	I	By Trust

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 transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2025.

Remarks:

	Marta Woods by Power of Attorney	11/03/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)