Lam Research director Mayer receives 856-share award

A director's reported sale was made under a Rule 10b5-1 trading plan adopted on November 12, 2025.

Available on EDGAR 11/09/2026 - 02:07 PM EST Accepted by SEC EDGAR 11/09/2026 - 02:06 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Lam Research director Bethany Mayer acquired an award of 856 common shares on November 6, 2026, and sold 16 shares at $208.50 per share that day. The sale was made under a Rule 10b5-1 trading plan adopted on November 12, 2025. A separate ownership entry lists 20,995 shares held indirectly by trust.

Insider Trade Summary 10b5-1

Net Seller: 16 shares

Net Sell 2 txns

Insider Mayer Bethany

Role Director

Sold 16 shs ($3K)

Share of Position Sold 0.90%

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	856	$0.00	$0.00
Sale	Common Stock F2, F1	16	$208.50	$3K
Holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,756 shares (Direct); Common Stock — 20,995 shares (Indirect, By Trust)

Holdings Before and After: Common Stock, 916 to 1,756 shares (Direct)

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

Footnotes (2)

1. F1. The amount reported includes shares subject to unvested restricted stock units.
2. F2. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2025.

Key Figures

Shares acquired as an award: 856 shares Shares sold: 16 shares Sale price per share: $208.50 per share +1 more

4 metrics

Shares acquired as an award 856 shares November 6, 2026

Shares sold 16 shares November 6, 2026

Sale price per share $208.50 per share November 6, 2026

Shares held indirectly by trust 20,995 shares Ownership entry dated November 6, 2026

Key Terms

Rule 10b5-1 trading plan, unvested restricted stock units

2 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan"

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.

unvested restricted stock units financial

"shares subject to unvested restricted stock units"

FAQ

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

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

Bethany Mayer sold 16 shares at $208.50 per share on November 6, 2026, under a Rule 10b5-1 trading plan adopted on November 12, 2025.

How many LRCX shares did Bethany Mayer acquire as an award?

Bethany Mayer acquired an award of 856 common shares on November 6, 2026.

How many LRCX shares were listed as held indirectly by trust?

A separate ownership entry lists 20,995 common shares held indirectly 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)
11/06/2026

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	11/06/2026		A		856	A	$0	1,772(1)	D
Common Stock	11/06/2026		S		16(2)	D	$208.5	1,756(1)	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. The amount reported includes shares subject to unvested restricted stock units.

2. 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	11/09/2026
	** 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)