Lam Research SVP equity awards and tax withholding

LAM RESEARCH CORP Senior Vice President Vahid Vahedi reported equity awards and related tax-withholding share dispositions.

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Rhea-AI Filing Summary

LAM RESEARCH CORP Senior Vice President Vahid Vahedi reported equity awards and related tax-withholding share dispositions. On 02/27/2026, he received 9,053 shares of common stock and 11,065 market-based performance restricted stock units at $0 per unit as equity grants.

The restricted stock units vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029. The market-based performance units can vest between 0% and 150% on 02/27/2029, based on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index from 02/02/2026 through 02/01/2029.

To cover tax withholding on vesting, shares of common stock were automatically withheld in several transactions on 02/27/2026 and 03/27/2026, including 3,382, 24,675, 2,994, and 1,923 shares at $233.89 per share. After the most recent transaction on 03/27/2026, he directly held 276,896 shares of common stock and 11,065 performance units.

Insider Trade Summary

6 transactions reported

Mixed 6 txns

Insider Vahedi Vahid

Role Senior Vice President

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	3,382	$233.89	$791K
Grant/Award	Market-based Performance Restricted Stock Unit	11,065	$0.00	$0.00
Grant/Award	Common Stock	9,053	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	24,675	$233.89	$5.77M
Exercise Price or Tax Liability	Common Stock	2,994	$233.89	$700K
Exercise Price or Tax Liability	Common Stock	1,923	$233.89	$450K

Holdings After Transaction: Market-based Performance Restricted Stock Unit — 11,065 contracts (Direct); Common Stock — 276,896 shares (Direct)

Footnotes (4)

F1. The restricted stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029.
F2. The amount reported includes shares subject to unvested restricted stock units.
F3. Represents shares that were automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
F4. 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.

FAQ

What did LAM RESEARCH CORP (LRCX) executive Vahid Vahedi report in this Form 4?

He reported new equity awards and related tax-withholding share dispositions. The filing shows grants of common stock and market-based performance restricted stock units, plus automatic share withholdings to satisfy tax obligations upon vesting of previously granted restricted stock units.

How many Lam Research (LRCX) shares did Vahid Vahedi receive as a stock grant?

He received a grant of 9,053 shares of Lam Research common stock. These shares are part of his equity compensation and are associated with restricted stock units that vest in three equal installments starting in 2027 and continuing through 2029.

What are the terms of Vahid Vahedi’s market-based performance RSUs at Lam Research (LRCX)?

He was granted 11,065 market-based performance restricted stock units that can vest between 0% and 150% on 02/27/2029. Vesting depends on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index from 02/02/2026 to 02/01/2029.

Were the Lam Research (LRCX) Form 4 transactions open-market sales by Vahid Vahedi?

No, the dispositions were tax-withholding transactions, not open-market sales. Shares were automatically withheld upon vesting of restricted stock units to cover tax liabilities, at a reported price of $233.89 per share in multiple withholding entries.

How many Lam Research (LRCX) shares does Vahid Vahedi hold after these transactions?

After the most recent reported transaction on 03/27/2026, he directly held 276,896 shares of Lam Research common stock. He also held 11,065 market-based performance restricted stock units that may vest in 2029 depending on total shareholder return performance.

When will Vahid Vahedi’s Lam Research (LRCX) restricted stock units vest?

The time-based restricted stock units vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029. The separate market-based performance units are scheduled to vest on 02/27/2029, subject to Lam Research meeting specified total shareholder return performance conditions.

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Accepted by SEC EDGAR 03/02/2026 - 06:13 PM

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

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).

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

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)
02/27/2026

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)
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	02/27/2026		A		9,053⁽¹⁾	A	$0	309,870⁽²⁾	D
Common Stock	02/27/2026		F		24,675⁽³⁾	D	$233.89	285,195⁽²⁾	D
Common Stock	02/27/2026		F		2,994⁽³⁾	D	$233.89	282,201⁽²⁾	D
Common Stock	02/27/2026		F		1,923⁽³⁾	D	$233.89	280,278⁽²⁾	D
Common Stock	03/27/2026		F		3,382⁽³⁾	D	$233.89	276,896⁽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)
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)
Market-based Performance Restricted Stock Unit	$0	02/27/2026		A		11,065		⁽⁴⁾	⁽⁴⁾	Common Stock	11,065	$0	11,065	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.
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.

Source: View Original Filing on SEC EDGAR