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Table of Contents ( Mark One ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended June 27 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 to For the transition period from Commission file number : 0-12933 LAM RESEARCH CORPORATION ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 4650 Cushing Parkway , Fremont , California ( Address of principal executive offices ) Title of each class Common Stock , Par Value $ 0.001 Per Share 94-2634797 Large accelerated filer | X Non - accelerated filer ( I.R.S. Employer Identification No. ) 94538 ( Zip Code ) Registrant's telephone number , including area code : ( 510 ) 572-0200 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) LRCX Name of each exchange on which registered The Nasdaq Stock Market ( Nasdaq Global Select Market ) Securities registered pursuant to Section 12 ( g ) of the Act : None ( Title of class ) Yes | Yes No No | Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , ” “ accelerated filer " , " smaller reporting company " , and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . No | Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes The aggregate market value of the Registrant's Common Stock , $ 0.001 par value , held by non - affiliates of the Registrant , as of December 27 , 2020 , the last business day of the most recently completed second fiscal quarter , was $ 53,314,078,151 . Common Stock held by each officer and director and by each person who owns 5 % or more of the outstanding Common Stock has been excluded from this computation based on the assumption that such persons may be deemed to be affiliates . This determination of affiliate status is not necessarily a conclusive determination of such status for other purposes . As of August 12 , 2021 , the Registrant had 141,953,681 outstanding shares of Common Stock .