Washington, D.C. 20549


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 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).
1. Name and Address of Reporting Person*
Varadarajan Seshasayee

(Last) (First) (Middle)


(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Senior Vice President
3. Date of Earliest Transaction (Month/Day/Year)
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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 07/18/2019 S 20,000(1) D $200 48,907(2) D
Common Stock 226.859 I By 401(k)
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. Shares sold pursuant to 10b5-1 Trading Plan.
2. Amount reported includes shares subject to unvested Restricted Stock Units.
Leign Cramer by Power of Attorney 07/22/2019
** 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.


The undersigned hereby constitutes and appoints each of Peter Ornowski, Corporate Controller, Brenna 
Hodgson, Sr. Finance Manager, Leign Cramer, Stock Administrator, and George Schisler, Vice President 
of General Legal Affairs, signing singly, to be the undersigned's true and lawful attorney-in-fact to: 


(1) prepare, execute in my name and on my behalf, and submit to the United States Securities 
and Exchange Commission (the "SEC") a Form ID, including amendments thereto, and any 
other documents necessary or appropriate to obtain codes and passwords enabling me to 
make electronic filings with the SEC of reports required by Section 16(a) of the Securities 
Exchange Act of 1934 ("Section 16(a)") or any rule or regulation of the SEC; 


(2) execute for and on behalf of the undersigned, in the undersigned's capacity as an officer 
and/or director of Lam Research Corporation (the "Company"), Forms 3, 4, and 5 in 
accordance with Section 16(a) and the rules thereunder; 


(3) do and perform any and all acts for and on behalf of the undersigned which may be 
necessary or desirable to complete and execute any such Form 3, 4, or 5, complete and 
execute any amendment or amendments thereto, and timely file such form with the SEC 
and any stock exchange
 or similar authority; and 


(4) take any other action of any type whatsoever in connection with the foregoing which, in the 
opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally 
required by, the undersigned, it being understood that the documents executed by such 
attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in 
such form and shall contain such terms and conditions as such attorney-in-fact may 
approve in such attorney-in-fact's discretion. 


The undersigned hereby grants to each such attorney-in-fact full power and authority to do and 
perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise 
of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might 
or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming 
all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to 
be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned 
acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the 
undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to 
comply with Section 16 of the Securities Exchange Act of 1934. 


This Power of Attorney shall remain in full force and effect until the undersigned is no longer 
required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in securities 
issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the 
foregoing attorneys-in-fact. 


IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of 17 May 2017. 



/s/Sesha Varadarajan 



 Print Name: Sesha Varadarajan