Lam Research (LRCX) CFO awarded stock units, withholds shares for tax

Rhea-AI Filing Summary

Lam Research Chief Financial Officer and EVP Douglas R. Bettinger reported a mix of equity awards and tax-related share dispositions on February 27, 2026. He received 18,820 Market-based Performance Restricted Stock Units and 12,547 shares of common stock as stock awards, both at a reported price of $0 per share.

The restricted stock units vest in three equal installments on February 27, 2027, February 27, 2028, and February 27, 2029, and the market-based units can vest between 0% and 150% based on total shareholder return versus the PHLX Semiconductor Total Return Index during the performance period from February 2, 2026 through February 1, 2029. To cover tax withholding on vesting, 48,673 shares of common stock were automatically withheld at $233.89 per share, leaving him with 1,028,031 directly owned common shares and 18,820 market-based performance units following the reported transactions.

SEC Form 4

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

OMB APPROVAL

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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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bettinger Douglas R

(Last) (First) (Middle)

4650 CUSHING PARKWAY

(Street)

FREMONT CA 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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer & EVP

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/27/2026		A		12,547(1)	A	$0	1,076,704(2)	D
Common Stock	02/27/2026		F		38,136(3)	D	$233.89	1,038,568(2)	D
Common Stock	02/27/2026		F		2,826(3)	D	$233.89	1,035,742(2)	D
Common Stock	02/27/2026		F		2,186(3)	D	$233.89	1,033,556(2)	D
Common Stock	02/27/2026		F		5,525(3)	D	$233.89	1,028,031(2)	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Market-based Performance Restricted Stock Unit	$0	02/27/2026		A		18,820		(4)	(4)	Common Stock	18,820	$0	18,820	D

Explanation of Responses:

1. The restricted stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029.

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

3. Represents shares that were automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations.

4. The Market-based performance restricted stock units will vest between 0% and 150% on 2/27/2029. The performance of this award is based on the percentile ranking of Lam Research's Total Shareholder Return relative to the Total Shareholder Return of the companies in the PHLX Semiconductor Total Return Index during the performance period of 02/2/2026 through 02/01/2029.

Remarks:

	Marta Woods by Power of Attorney	03/02/2026
	** 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.
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FAQ

What insider transactions did Lam Research (LRCX) CFO Douglas Bettinger report?

Douglas Bettinger reported new equity awards and tax-related share withholdings. He received 18,820 Market-based Performance Restricted Stock Units and 12,547 shares of common stock, and 48,673 shares were automatically withheld to satisfy tax obligations tied to restricted stock unit vesting.

How many Lam Research shares does Douglas Bettinger own after this Form 4?

After the reported transactions, Douglas Bettinger directly owns 1,028,031 common shares. In addition, he holds 18,820 Market-based Performance Restricted Stock Units, which are subject to future performance and vesting conditions over a multiyear period ending in 2029.

What are the terms of Douglas Bettinger’s Lam Research market-based performance RSUs?

The 18,820 market-based performance RSUs can vest between 0% and 150%. Vesting depends on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index from February 2, 2026 through February 1, 2029, with settlement on February 27, 2029.

When do Douglas Bettinger’s new Lam Research restricted stock units vest?

The restricted stock units vest in three equal annual installments. They are scheduled to vest on February 27, 2027, February 27, 2028, and February 27, 2029, subject to the award’s terms, providing a staggered, time-based vesting structure for the CFO.

Why were Lam Research shares disposed of in Bettinger’s Form 4 filing?

The reported share dispositions were for tax withholding, not open-market sales. A total of 48,673 common shares were automatically withheld upon restricted stock unit vesting to satisfy tax obligations, at a reported price of $233.89 per share.

Does Douglas Bettinger’s Lam Research Form 4 show open-market buying or selling?

The Form 4 shows equity grants and tax-withholding dispositions, not open-market trades. Awards were reported with transaction code A, while the dispositions used code F, indicating shares withheld to pay taxes rather than discretionary buying or selling.