Form 4 LAM RESEARCH CORP For: Jun 11 Filed by: BRANDT ERIC

June 15, 2026 12:27 PM

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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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 ^*

BRANDT ERIC

(Last)

(First)

(Middle)

C/O LAM RESEARCH CORPORATION

4650 CUSHING PARKWAY

(Street)

FREMONT

94538

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
LAM RESEARCH CORP [ LRCX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/11/2026		S		974 ⁽¹⁾	D	$ 337.56 ⁽²⁾	252,731 ⁽³⁾	D
Common Stock	06/11/2026		S		1,083 ⁽¹⁾	D	$ 338.62 ⁽⁴⁾	251,648 ⁽³⁾	D
Common Stock	06/11/2026		S		1,895 ⁽¹⁾	D	$ 339.75 ⁽⁵⁾	249,753 ⁽³⁾	D
Common Stock	06/11/2026		S		1,277 ⁽¹⁾	D	$ 340.68 ⁽⁶⁾	248,476 ⁽³⁾	D
Common Stock	06/11/2026		S		1,070 ⁽¹⁾	D	$ 341.81 ⁽⁷⁾	247,406 ⁽³⁾	D
Common Stock	06/11/2026		S		3,644 ⁽¹⁾	D	$ 342.91 ⁽⁸⁾	243,762 ⁽³⁾	D
Common Stock	06/11/2026		S		1,481 ⁽¹⁾	D	$ 343.96 ⁽⁹⁾	242,281 ⁽³⁾	D
Common Stock	06/11/2026		S		3,208 ⁽¹⁾	D	$ 344.92 ⁽¹⁰⁾	239,073 ⁽³⁾	D
Common Stock	06/11/2026		S		2,832 ⁽¹⁾	D	$ 345.84 ⁽¹¹⁾	236,241 ⁽³⁾	D
Common Stock	06/11/2026		S		3,442 ⁽¹⁾	D	$ 346.79 ⁽¹²⁾	232,799 ⁽³⁾	D
Common Stock	06/11/2026		S		6,592 ⁽¹⁾	D	$ 347.86 ⁽¹³⁾	226,207 ⁽³⁾	D
Common Stock	06/11/2026		S		4,334 ⁽¹⁾	D	$ 348.73 ⁽¹⁴⁾	221,873 ⁽³⁾	D
Common Stock	06/11/2026		S		1,517 ⁽¹⁾	D	$ 349.79 ⁽¹⁵⁾	220,356 ⁽³⁾	D
Common Stock	06/11/2026		S		36 ⁽¹⁾	D	$ 350.77	220,320 ⁽³⁾	D
Common Stock	06/11/2026		S		1,172 ⁽¹⁾	D	$ 353.52 ⁽¹⁶⁾	219,148 ⁽³⁾	D
Common Stock	06/11/2026		S		1,461 ⁽¹⁾	D	$ 354.08 ⁽¹⁷⁾	217,687 ⁽³⁾	D
Common Stock	06/11/2026		S		1,331 ⁽¹⁾	D	$ 355.5 ⁽¹⁸⁾	216,356 ⁽³⁾	D
Common Stock	06/11/2026		S		1,653 ⁽¹⁾	D	$ 356.27 ⁽¹⁹⁾	214,703 ⁽³⁾	D
Common Stock	06/11/2026		S		1,455 ⁽¹⁾	D	$ 357.06 ⁽²⁰⁾	213,248 ⁽³⁾	D
Common Stock	06/11/2026		S		1,880 ⁽¹⁾	D	$ 358.22 ⁽²¹⁾	211,368 ⁽³⁾	D
Common Stock	06/11/2026		S		780 ⁽¹⁾	D	$ 359.24 ⁽²²⁾	210,588 ⁽³⁾	D
Common Stock	06/11/2026		S		664 ⁽¹⁾	D	$ 360.24 ⁽²³⁾	209,924 ⁽³⁾	D
Common Stock	06/11/2026		S		1,756 ⁽¹⁾	D	$ 361.05 ⁽²⁴⁾	208,168 ⁽³⁾	D
Common Stock	06/11/2026		S		2,604 ⁽¹⁾	D	$ 362.2 ⁽²⁵⁾	205,564 ⁽³⁾	D
Common Stock	06/11/2026		S		5,717 ⁽¹⁾	D	$ 362.95 ⁽²⁶⁾	199,847 ⁽³⁾	D
Common Stock	06/11/2026		S		642 ⁽¹⁾	D	$ 364 ⁽²⁷⁾	199,205 ⁽³⁾	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 6, 2026.

2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $337.00 to $337.97, inclusive

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

4. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $338.19 to $339.15, inclusive

5. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $339.23 to $340.20, inclusive

6. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $340.278 to $341.249, inclusive

7. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $341.418 to $342.202, inclusive

8. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $342.415 to $343.39, inclusive

9. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $343.40 to $344.377, inclusive

10. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $344.396 to $345.348, inclusive

11. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $345.386 to $346.336, inclusive

12. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $346.383 to $347.359, inclusive

13. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $347.383 to $348.355, inclusive

14. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $348.391 to $349.351, inclusive

15. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $349.409 to $350.260, inclusive

16. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $352.824 to $353.805, inclusive

17. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $353.818 to $354.743, inclusive

18. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $354.805 to $355.746, inclusive

19. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $355.75 to $356.709, inclusive

20. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $356.759 to $357.703, inclusive

21. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $357.762 to $358.70, inclusive

22. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $358.79 to $359.735, inclusive

23. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $359.819 to $360.59, inclusive

24. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $360.60 to $361.54, inclusive

25. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $361.595 to $362.550, inclusive

26. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $362.58 to $363.57, inclusive

27. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $363.765 to $364.37, inclusive

	Marta Woods by Power of Attorney	06/15/2026
	** 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.

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Form 4 LAM RESEARCH CORP For: Jun 11 Filed by: BRANDT ERIC

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