LRCX

Nasdaq

LAM RESEARCH CORP

Latest disclosureSeptember 10, 2026

Insider score Why 0?: 0/ 100
Qualifying buys · 30d: $0

0 purchases · 55 sales

Price by TradingView

Insider transactions 68

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. Sales: $12.59M by 2 insiders.

Showing the first 6 of 13 trades on this page.

Exercise or conversion

Timothy Archer

President and CEO

Common Stock

Value context: $900.99K
Reported price: $30.033 / share

Exercise or conversion

Timothy Archer

President and CEO

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $30.033 exercise / conversion price

Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Exercise or conversion

Seshasayee Varadarajan

Senior Vice President

Common Stock

Value context: $734.74K
Reported price: $59.881 / share

Exercise or conversion

Seshasayee Varadarajan

Senior Vice President

Common Stock

Value context: $825.31K
Reported price: $30.033 / share

Exercise or conversion

Seshasayee Varadarajan

Senior Vice President

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $59.881 exercise / conversion price

Understand this price

Exercise or conversion

Seshasayee Varadarajan

Senior Vice President

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $30.033 exercise / conversion price

Understand this price

Exercise or conversion

Timothy Archer

President and CEO

Common Stock

Value context: $900.99K
Reported price: $30.033 / share

Exercise or conversion

Timothy Archer

President and CEO

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $30.033 exercise / conversion price

Understand this price

Tax or exercise withholding

Ava Harter

Chief Legal Officer

Common Stock

Value context: $1.78M
Reported price: $307.42 / share

Exercise or conversion

Timothy Archer

President and CEO

Common Stock

Value context: $900.99K
Reported price: $30.033 / share

Exercise or conversion

Timothy Archer

President and CEO

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $30.033 exercise / conversion price

Understand this price

Exercise or conversion

Ava Harter

Chief Legal Officer

Common Stock

Value context: $463K
Reported price: $77.039 / share

Exercise or conversion

Ava Harter

Chief Legal Officer

Employee Stock Option (Right to Buy)

Derivative security · not the ordinary share price.

Value context: Not a separate purchase
Exercise / conversion price: $77.039 exercise / conversion price

Understand this price

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
President and CEO	Common StockOption exercise or conversion10b5-1	30,000$30.03 / share	$900.99K	Sep 9Filed Sep 10 · 1d later	SEC filing
President and CEO	Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1	Derivative units30,000$30.03 exercise / conversion price	Not a separate purchase	Sep 9Filed Sep 10 · 1d later	SEC filing
Senior Vice President	Common StockOption exercise or conversion10b5-1	12,270$59.88 / share	$734.74K	Sep 2Filed Sep 3 · 1d later	SEC filing
Senior Vice President	Common StockOption exercise or conversion10b5-1	27,480$30.03 / share	$825.31K	Sep 2Filed Sep 3 · 1d later	SEC filing
Senior Vice President	Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1	Derivative units12,270$59.88 exercise / conversion price	Not a separate purchase	Sep 2Filed Sep 3 · 1d later	SEC filing
Senior Vice President	Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1	Derivative units27,480$30.03 exercise / conversion price	Not a separate purchase	Sep 2Filed Sep 3 · 1d later	SEC filing
President and CEO	Common StockOption exercise or conversion10b5-1	30,000$30.03 / share	$900.99K	Aug 6Filed Aug 7 · 1d later	SEC filing
President and CEO	Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1	Derivative units30,000$30.03 exercise / conversion price	Not a separate purchase	Aug 6Filed Aug 7 · 1d later	SEC filing
Chief Legal Officer	Common StockExercise-price or tax withholding	5,790$307.42 / share	$1.78M	Aug 5Filed Aug 6 · 1d later	SEC filing
President and CEO	Common StockOption exercise or conversion10b5-1	30,000$30.03 / share	$900.99K	Jul 2Filed Jul 6 · 4d later	SEC filing
President and CEO	Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1	Derivative units30,000$30.03 exercise / conversion price	Not a separate purchase	Jul 2Filed Jul 6 · 4d later	SEC filing
Chief Legal Officer	Common StockOption exercise or conversion	6,010$77.04 / share	$463K	Apr 27Filed Apr 28 · 1d later	SEC filing
Chief Legal Officer	Employee Stock Option (Right to Buy)Option exercise or conversion	Derivative units6,010$77.04 exercise / conversion price	Not a separate purchase	Apr 27Filed Apr 28 · 1d later	SEC filing

Congress transactions 18

All Congress filings

Partial sale disclosed

Lam Research Corporation - Common Stock · Stock

The filing reports a partial sale for a spouse.

Sheldon WhitehouseReporting Senate member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: August 13, 2026

Purchase disclosed

Lam Research Corporation - Common Stock · Stock

The filing reports a purchase for the member.

AAAlan ArmstrongReporting Senate member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: March 27, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: June 5, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: April 27, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: April 27, 2026

Purchase disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a purchase for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: March 12, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: February 26, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: February 26, 2026

Purchase disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a purchase for the member.

Cleo FieldsReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: February 3, 2026

Partial sale disclosed

Lam Research Corp · Stock

The filing reports a partial sale for a joint account.

John BoozmanReporting Senate member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: January 8, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: January 16, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: January 8, 2026

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: January 8, 2026

Purchase disclosed

Lam Research Corporation - Common Stock · Stock

The filing reports a purchase for a joint account.

Markwayne MullinReporting Senate member

Reported amount: $50,001 – $100,000Reported range; exact amount not disclosed.
Trade date: December 29, 2025

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for a spouse.

Jonathan JacksonReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: September 3, 2025

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for a spouse.

Valerie HoyleReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: September 23, 2025

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: September 22, 2025

Sale disclosed

Lam Research Corporation - Common Stock (LRCX) · Stock

The filing reports a sale for the member.

David J. TaylorReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: September 22, 2025

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000707549
Latest public acceptance: Sep 10, 2026, 05:05 PM UTC
Score calculated: Oct 8, 2026, 12:03 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Reporting insider

Security / transaction

Amount / price

Value

Traded / disclosed

Source

President and CEO

Common StockOption exercise or conversion10b5-1

30,000$30.03 / share

$900.99K

Sep 9Filed Sep 10 · 1d later

SEC filing

President and CEO

Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1

Derivative units30,000$30.03 exercise / conversion price

Not a separate purchase

Sep 9Filed Sep 10 · 1d later

SEC filing

Senior Vice President

Common StockOption exercise or conversion10b5-1

12,270$59.88 / share

$734.74K

Sep 2Filed Sep 3 · 1d later

SEC filing

Senior Vice President

Common StockOption exercise or conversion10b5-1

27,480$30.03 / share

$825.31K

Sep 2Filed Sep 3 · 1d later

SEC filing

Senior Vice President

Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1

Derivative units12,270$59.88 exercise / conversion price

Not a separate purchase

Sep 2Filed Sep 3 · 1d later

SEC filing

Senior Vice President

Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1

Derivative units27,480$30.03 exercise / conversion price

Not a separate purchase

Sep 2Filed Sep 3 · 1d later

SEC filing

President and CEO

Common StockOption exercise or conversion10b5-1

30,000$30.03 / share

$900.99K

Aug 6Filed Aug 7 · 1d later

SEC filing

President and CEO

Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1

Derivative units30,000$30.03 exercise / conversion price

Not a separate purchase

Aug 6Filed Aug 7 · 1d later

SEC filing

Chief Legal Officer

Common StockExercise-price or tax withholding

5,790$307.42 / share

$1.78M

Aug 5Filed Aug 6 · 1d later

SEC filing

President and CEO

Common StockOption exercise or conversion10b5-1

30,000$30.03 / share

$900.99K

Jul 2Filed Jul 6 · 4d later

SEC filing

President and CEO

Employee Stock Option (Right to Buy)Option exercise or conversion10b5-1

Derivative units30,000$30.03 exercise / conversion price

Not a separate purchase

Jul 2Filed Jul 6 · 4d later

SEC filing

Chief Legal Officer

Common StockOption exercise or conversion

6,010$77.04 / share

$463K

Apr 27Filed Apr 28 · 1d later

SEC filing

Chief Legal Officer

Employee Stock Option (Right to Buy)Option exercise or conversion

Derivative units6,010$77.04 exercise / conversion price

Not a separate purchase

Apr 27Filed Apr 28 · 1d later

SEC filing

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000707549
Latest public acceptance: Sep 10, 2026, 05:05 PM UTC
Score calculated: Oct 8, 2026, 12:03 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.