SVP Vahedi Vahid boosts Lam Research (LRCX) stake with equity award

Rhea-AI Filing Summary

Lam Research senior vice president Vahedi Vahid reported an equity award transaction involving both derivative and common shares. On 02/03/2026, 33,180 market-based performance restricted stock units with a $0 exercise price were converted, and 49,770 shares of common stock were acquired at $0, bringing his directly held stake to 300,817 shares, including shares subject to unvested restricted stock units.

The performance units were originally granted on 03/01/2023 and are designed to vest between 0% and 150% on 03/01/2026. Their vesting depends on Lam Research’s total shareholder return, including dividends, compared with the PHLX Semiconductor sector total return index over the performance period from 02/01/2023 through 01/31/2026.

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

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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^*

Vahedi Vahid

(Last) (First) (Middle)

C/O LAM RESEARCH CORPORATION

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)
	Senior Vice President

3. Date of Earliest Transaction (Month/Day/Year)
02/03/2026

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	02/03/2026		M		49,770(1)	A	$0	300,817(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	02/03/2026		M			33,180	(3)	(3)	Common Stock	33,180	$0	0	D

Explanation of Responses:

1. On 03/01/2023, the Reporting Person received a grant of 33,180 Market-based Performance Restricted Stock Units vesting between 0% and 150% on 03/01/2026. The vesting of this award is based on the total return stock price performance of Lam Research shares (assuming reinvestment of dividends) relative to the market price performance of the PHLX Semiconductor Sector Total Return Index, comparing the 50-trading day trailing average closing price over the performance period from 02/01/2023 through 01/31/2026.

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

3. The Market-based performance restricted stock units will vest between 0% and 150% on 03/01/2026. The performance of this award is based on the Lam Research Total Shareholder Return performance relative to the PHLX Semiconductor Total Return Index Total Shareholder Return during the performance period of 02/01/2023 through 01/31/2026.

Remarks:

	Marta Woods by Power of Attorney	02/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did Lam Research (LRCX) report for Vahedi Vahid?

Lam Research reported that senior vice president Vahedi Vahid converted 33,180 market-based performance restricted stock units at a $0 exercise price and acquired 49,770 shares of common stock on 02/03/2026, increasing his directly held stake to 300,817 shares.

How many Lam Research (LRCX) shares does Vahedi Vahid now own?

After the reported transaction, senior vice president Vahedi Vahid beneficially owns 300,817 shares of Lam Research common stock directly. This total includes shares that are still subject to unvested restricted stock units, as noted in the filing’s explanatory footnote.

What type of equity award did Lam Research (LRCX) grant to Vahedi Vahid?

Vahedi Vahid holds market-based performance restricted stock units. He received a grant of 33,180 units on 03/01/2023, with vesting tied to Lam Research’s total shareholder return performance versus the PHLX Semiconductor sector total return index over a defined multi-year period.

How are Vahedi Vahid’s Lam Research (LRCX) performance units structured to vest?

The performance units will vest between 0% and 150% on 03/01/2026. Vesting depends on Lam Research’s total shareholder return, including reinvested dividends, relative to the PHLX Semiconductor total return index from 02/01/2023 through 01/31/2026.

What does transaction code "M" mean in the Lam Research (LRCX) Form 4?

Transaction code "M" indicates an exercise or conversion of a derivative security, such as restricted stock units, into common stock. In this case, Vahedi Vahid’s market-based performance restricted stock units were converted into Lam Research common shares at a stated price of $0.

Is the Lam Research (LRCX) Form 4 transaction a direct or indirect holding for Vahedi Vahid?

The reported holdings are classified as direct ownership. The Form 4 shows the 49,770 acquired common shares and the total 300,817 shares following the transaction as directly owned, with no separate indirect ownership entity disclosed in the footnotes.