Lam Research CEO Archer sells 31,400 shares

Q: How many LRCX shares did Timothy Archer sell, and at what price?

Timothy Archer sold 31,400 shares at $227.0200 per share on October 23, 2026. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted February 24, 2026; the reported amount includes shares subject to unvested restricted stock units.

Q: Did Timothy Archer exercise LRCX options?

Archer exercised options to acquire 31,400 shares at an exercise price of $30.0330 per share on October 23, 2026. The derivative transaction row reports 0 options following the transaction.

Q: How many LRCX shares were listed in Timothy Archer’s indirect holdings?

The report lists 48,026 shares held indirectly through Archer’s 401(k) and 5,670 shares held indirectly through his spouse’s 401(k).

The report also lists 48,026 shares held indirectly through Archer’s 401(k) and 5,670 through his spouse’s 401(k).

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Form Type

Rhea-AI Filing Summary

Lam Research Corp. President and CEO Timothy Archer exercised options to acquire 31,400 shares of common stock at $30.0330 per share on October 23, 2026, then sold 31,400 shares at $227.0200 per share that day. The acquisition and sale were effected pursuant to a Rule 10b5-1 trading plan adopted February 24, 2026. The reported share amounts include shares subject to unvested restricted stock units.

Insider Trade Summary 10b5-1

Exercise and Sale: 31,400 shares ($6.19M approx. pre-tax spread)

Exercise and Sale 5 txns

Insider ARCHER TIMOTHY

Role President and CEO

Sold 31,400 shs ($7.13M)

Approx. gross sale proceeds $7.13M

Approx. exercise cost $943K

Approx. pre-tax spread $6.19M

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right to Buy) ^F3	31,400	$0.00	$0.00
Exercise	Common Stock ^{F1, F2}	31,400	$30.033	$943K
Sale	Common Stock ^{F1, F2}	31,400	$227.02	$7.13M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 1,075,966 shares (Direct); Common Stock — 48,025.72 shares (Indirect, By 401(k)); Common Stock — 5,670.002 shares (Indirect, By Spouse 401(k))

Footnotes (3)

F1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2026.
F2. The amount reported includes shares subject to unvested restricted stock units.
F3. The stock options will become exercisable in three equal installments on 03/02/2021, 03/02/2022, and 03/02/2023.

Key Figures

Options exercised to acquire shares: 31,400 shares Exercise price: $30.0330 per share Shares sold: 31,400 shares +4 more

7 metrics

Options exercised to acquire shares 31,400 shares October 23, 2026

Exercise price $30.0330 per share October 23, 2026

Shares sold 31,400 shares October 23, 2026

Sale price $227.0200 per share October 23, 2026

Indirect shares held through Timothy Archer’s 401(k) 48,026 shares Listed after the October 23, 2026 transactions

Indirect shares held through spouse’s 401(k) 5,670 shares Listed after the October 23, 2026 transactions

Options following exercise 0 options October 23, 2026 derivative transaction row

Key Terms

Rule 10b5-1 trading plan, restricted stock units, Employee Stock Option (Right to Buy)

3 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"shares subject to unvested restricted stock units"

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.

Employee Stock Option (Right to Buy) financial

"Employee Stock Option (Right to Buy)"

FAQ

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

How many LRCX shares did Timothy Archer sell, and at what price?

Timothy Archer sold 31,400 shares at $227.0200 per share on October 23, 2026. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted February 24, 2026; the reported amount includes shares subject to unvested restricted stock units.

Did Timothy Archer exercise LRCX options?

Archer exercised options to acquire 31,400 shares at an exercise price of $30.0330 per share on October 23, 2026. The derivative transaction row reports 0 options following the transaction.

How many LRCX shares were listed in Timothy Archer’s indirect holdings?

The report lists 48,026 shares held indirectly through Archer’s 401(k) and 5,670 shares held indirectly through his spouse’s 401(k).

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

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Available on EDGAR 10/26/2026 - 01:49 PM EDT Accepted by SEC EDGAR 10/26/2026 - 01:49 PM EDT

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^*

ARCHER TIMOTHY

(Last)

(First)

(Middle)

4650 CUSHING PARKWAY

(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)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/23/2026

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)
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	10/23/2026		M		31,400⁽¹⁾	A	$30.033	1,107,366⁽²⁾	D
Common Stock	10/23/2026		S		31,400⁽¹⁾	D	$227.02	1,075,966⁽²⁾	D
Common Stock								48,025.72	I	By 401(k)
Common Stock								5,670.002	I	By Spouse 401(k)

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)
Employee Stock Option (Right to Buy)	$30.033	10/23/2026		M			31,400	⁽³⁾	03/02/2027	Common Stock	31,400	$0	0	D

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2026.

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

3. The stock options will become exercisable in three equal installments on 03/02/2021, 03/02/2022, and 03/02/2023.

Remarks:

	Marta Woods by Power of Attorney	10/26/2026
	** 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)

Source: View Original Filing on SEC EDGAR