Lam Research legal chief has shares withheld for tax

LAM RESEARCH CORP reports that Chief Legal Officer Ava Harter had 5790.0000 shares of common stock automatically withheld on 2026-08-05 to satisfy tax withholding on vesting restricted stock units at $307.4200 per share.

Accepted by SEC EDGAR 08/06/2026 - 11:39 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

LAM RESEARCH CORP reports that Chief Legal Officer Ava Harter had 5790.0000 shares of common stock automatically withheld on 2026-08-05 to satisfy tax withholding on vesting restricted stock units at $307.4200 per share. Following this tax-withholding disposition, she holds 47462.4550 shares, including shares subject to unvested restricted stock units.

Insider Trade Summary

Tax Withholding: 5,790 shares

Tax Withholding 1 txn

Insider Harter Ava

Role Chief Legal Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	5,790	$307.42	$1.78M

Holdings After Transaction: Common Stock — 47,462.455 shares (Direct)

Holdings Before and After: Common Stock, 53,252.455 to 47,462.455 shares (Direct)

Footnotes (2)

1. F1. Represents shares that were automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
2. F2. The amount reported includes shares subject to unvested restricted stock units.

Key Figures

Shares withheld for taxes: 5790.0000 shares Reference price per share: $307.4200 per share Shares held after transaction: 47462.4550 shares +2 more

5 metrics

Shares withheld for taxes 5790.0000 shares Common stock automatically withheld on 2026-08-05 to satisfy tax on vesting restricted stock units

Reference price per share $307.4200 per share Price applied to the 5790.0000 shares withheld for tax obligations

Shares held after transaction 47462.4550 shares Total Lam Research common shares reported held by Ava Harter after the 2026-08-05 disposition

Tax-liability-related shares in summary 5790 shares exercisePriceOrTaxLiabilityShares in the transaction summary for code F

Disposition transactions reported 1 transaction Single non-derivative tax-withholding disposition in this insider report

Key Terms

restricted stock units, tax withholding obligations, Rule 10b5-1, Payment of tax liability by delivering or withholding securities

4 terms

restricted stock units financial

"withheld upon vesting of restricted stock units to satisfy tax"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations"

Rule 10b5-1 financial

"Footnotes may reference Rule 10b5-1 trading plans or pre-arranged trading arrangements"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Payment of tax liability by delivering or withholding securities financial

"transaction_code_description: Payment of tax liability by delivering or withholding securities"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Lam Research (LRCX) report for Ava Harter?

Lam Research reported that Chief Legal Officer Ava Harter had 5790.0000 shares of common stock automatically withheld on 2026-08-05 to satisfy tax withholding on vesting restricted stock units, a transaction coded F for payment of tax liability by delivering or withholding securities.

How many Lam Research (LRCX) shares does Ava Harter hold after this transaction?

After the tax-withholding disposition, Ava Harter is reported to hold 47462.4550 shares of Lam Research common stock. A footnote explains that this amount includes shares subject to unvested restricted stock units, reflecting both vested and unvested equity awards in her reported holdings.

What price per share was used for Ava Harter’s Lam Research (LRCX) tax withholding?

The transaction used a reference price of $307.4200 per share for the shares withheld. This price applies to the 5790.0000 shares of common stock automatically withheld to satisfy tax obligations upon vesting of restricted stock units on 2026-08-05.

What does transaction code F mean in this Lam Research (LRCX) insider filing?

In this Lam Research insider report, transaction code F is described as “Payment of tax liability by delivering or withholding securities”. Here, shares were automatically withheld upon vesting of restricted stock units to cover the reporting person’s tax withholding obligations.

Was Ava Harter’s Lam Research (LRCX) transaction reported under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox (aff_10b5_one) is marked false, indicating the transaction was not reported as being executed under a Rule 10b5-1 trading plan. The disposition instead reflects automatic share withholding for tax obligations on vesting restricted stock units.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Harter Ava

(Last) (First) (Middle)

4650 CUSHING PKWY

(Street)

FREMONT CALIFORNIA 94538

(City) (State) (Zip)

UNITED STATES

(Country)

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 Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/05/2026		F		5,790(1)	D	$307.42	47,462.455(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

Explanation of Responses:

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

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

Remarks:

	Marta Woods by Power of Attorney	08/06/2026
	** 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.
* Form 4: SEC 1474 (03-26)