LAM RESEARCH CORP — Director's Dealing 2025

Dec 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LAM RESEARCH CORP (LRCX)
CIK: 0000707549
Period of Report: 2025-12-17

Reporting Person: ARCHER TIMOTHY (President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-17	Common Stock	S	50000	$163.86	Disposed	932409	Direct
2025-12-17	Common Stock	M	113300	$17.675	Acquired	1045709	Direct
2025-12-17	Common Stock	S	113300	$163.86	Disposed	932409	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-17	Employee Stock Option (Right to Buy)	$17.675	M	113300	Disposed	2026-03-01	Common Stock (113300)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	48025.816	Indirect
Common Stock	5670.097	Indirect

Footnotes

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025

F2: The amount reported includes shares subject to unvested restricted stock units.

F3: The stock options will become exercisable in three equal installments on 03/01/2020, 03/01/2021, and 03/01/2022.