UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
(Rule 14a-101)
INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934
(Amendment No. )
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Filed by a Party other than the Registrant ☐
Check the appropriate box:
☐ Preliminary Proxy Statement
☐ Confidential, for Use of the Commission Only
(as permitted by Rule 14a-6(e)(2))
☐ Definitive Proxy Statement
☒ Definitive Additional Materials
☐ Soliciting Material under §240.14a-12
LAM RESEARCH CORPORATION
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):
☒ No fee required
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14a-6(i)(1) and 0-11
Your Vote Counts! *The company will be hosting the meeting live via the
Internet this year at the website address above. Please check the proxy materials for instructions on how to access the meeting. Smartphone users Point your camera here and vote without entering a control number For complete
information and to vote, visit www.ProxyVote.com Control # T03550-P56755-Z93688 LAM RESEARCH CORPORATION 2026 Annual Meeting Vote by November 2, 2026 11:59 PM ET. For shares held in the 401(k) Plan, vote by October 29, 2026 11:59
PM ET. You invested in LAM RESEARCH CORPORATION and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the
stockholder meeting to be held on November 3, 2026. Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to
October 20, 2026. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If
sending an email, please include your control number (indicated below) in the subject line. There is no charge to you for requesting a copy. Unless requested, you will not otherwise receive a paper or email copy. Vote Virtually at the
Meeting* November 3, 2026 9:30 a.m. Pacific Time Virtually at: www.virtualshareholdermeeting.com/LRCX2026 LAM RESEARCH CORPORATION ATTN: INVESTOR RELATIONS 4650 CUSHING PARKWAY FREMONT, CALIFORNIA 94538
Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an
overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials at www.ProxyVote.com or easily request a paper or email copy. We encourage you to access and review all of the
important information contained in the proxy materials before voting. Please follow the instructions on the reverse side to vote these important matters. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to
click “Delivery Settings”. 1. Election of Directors For Nominees: 1a. Timothy M. Archer 1b. Eric K. Brandt For 1c. Ita M. Brennan For 1d. Anirudh Devgan For 1e. John M. Dineen For 1f. Mark Fields For 1g. Ho Kyu
Kang For 1h. Bethany J. Mayer For 1i. Jyoti K. Mehra For 1j. Abhijit Y. Talwalkar For 2. Advisory vote to approve our named executive officer compensation. For 3. Ratification of the appointment of KPMG LLP as our independent
registered public accounting firm for fiscal year 2027. For 4. Stockholder proposal titled “Attainable Shareholder Right to Call for a Special Shareholder Meeting,” if properly presented. Against NOTE: Such other business as may
properly come before the annual meeting or any adjournment or postponement thereof. Voting Items Board Recommends T03551-P56755-Z93688
