Douglas R. Bettinger - 02 Mar 2026 Form 4 Insider Report for LAM RESEARCH CORP (LRCX)

Role: Chief Financial Officer & EVP
Signature: Marta Woods by Power of Attorney
Issuer symbol: LRCX
Transactions as of: 02 Mar 2026
Net transactions value: -$5,884,549
Form type: 4
Filing time: 03 Mar 2026, 15:16:23 UTC
Previous filing: 02 Mar 2026
Next filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Bettinger Douglas R	Chief Financial Officer & EVP	4650 CUSHING PARKWAY, FREMONT	Marta Woods by Power of Attorney	03 Mar 2026	0001469469

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LRCX	Common Stock	Options Exercise	$995,222	+16,620	+1.6%	$59.88	1,044,651	02 Mar 2026	Direct	F1
transaction	LRCX	Common Stock	Options Exercise	$2,053,085	+37,980	+3.6%	$54.06	1,082,631	02 Mar 2026	Direct	F1
transaction	LRCX	Common Stock	Options Exercise	$351,686	+11,710	+1.1%	$30.03	1,094,341	02 Mar 2026	Direct	F1
transaction	LRCX	Common Stock	Sale	$9,284,542	-40,329	-3.7%	$230.22	1,054,012	02 Mar 2026	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	LRCX	Employee Stock Option (Right to Buy)	Options Exercise	$0	-16,620	-100%	$0.000000	0	02 Mar 2026	Common Stock	16,620	$59.88	Direct	F3
transaction	LRCX	Employee Stock Option (Right to Buy)	Options Exercise	$0	-37,980	-100%	$0.000000	0	02 Mar 2026	Common Stock	37,980	$54.06	Direct	F4
transaction	LRCX	Employee Stock Option (Right to Buy)	Options Exercise	$0	-11,710	-100%	$0.000000	0	02 Mar 2026	Common Stock	11,710	$30.03	Direct	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The amount reported includes shares subject to unvested restricted stock units.
F2	The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $230.07 .00 to $230.39, inclusive
F3	The stock options will become exercisable in three equal installments on 03/01/2022, 03/01/2023 and 03/01/2024.
F4	The stock options will become exercisable in three equal installments on 03/01/2023, 03/01/2024 and 03/01/2024.
F5	The stock options will become exercisable in three equal installments on 03/02/2021, 03/02/2022, and 03/02/2023.