LAM RESEARCH CORP (LRCX)
Data as of , from SEC Form 4 filings.
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About LAM RESEARCH CORP (LRCX)
Lam Research is one of the largest semiconductor wafer fabrication equipment manufacturers in the world. It specializes in deposition and etch, which entail the buildup of layers on a semiconductor and the subsequent selective removal of patterns from each layer. Lam holds the top market share in etch and holds the clear second share in deposition. It is more exposed to memory chipmakers for DRAM and NAND chips. It counts as top customers the largest chipmakers in the world, including TSMC, Samsung, Intel, and Micron.
- FREMONT, CA
- 23,300
- 1984
- XNAS
LRCX Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 7 | 134,307 | $40.50M |
| Option exercise | 8 | 199,500 | |
| Tax withholding / forfeiture | 1 | 5,790 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
LRCX insider transactions (Form 4)
4667 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 2 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Neil J. Fernandes - Officer | Option exercise | Common Stock | 21,570 footnote F1 | $0.00 | - | |
| Neil J. Fernandes - Officer | Option exercise | Market-based Performance Restricted Stock Unit | 14,380 | $0.00 | - | |
| ||||||
| Patrick J. Lord - Officer | Option exercise | Common Stock | 63,345 footnote F1 | $0.00 | - | |
| Patrick J. Lord - Officer | Option exercise | Market-based Performance Restricted Stock Unit | 42,230 | $0.00 | - | |
| ||||||
 Vahid Vahedi - Officer | Option exercise | Common Stock | 49,770 footnote F1 | $0.00 | - | |
| Vahid Vahedi - Officer | Option exercise | Market-based Performance Restricted Stock Unit | 33,180 | $0.00 | - | |
| ||||||
| Seshasayee Varadarajan - Officer | Option exercise | Common Stock | 53,925 footnote F1 | $0.00 | - | |
| Seshasayee Varadarajan - Officer | Option exercise | Market-based Performance Restricted Stock Unit | 35,950 | $0.00 | - | |
| ||||||
| Timothy Archer - Officer | Option exercise | Common Stock | 271,530 footnote F1 | $0.00 | - | |
| Timothy Archer - Officer | Option exercise | Market-based Performance Restricted Stock Unit | 181,020 | $0.00 | - | |
| ||||||
| Douglas R. Bettinger - Officer | Open-market sale | Common Stock | 40,080 | $150.60 footnote F1 | $6.04M | |
| ||||||
| Ho Kyu Kang - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Jyoti Mehra - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Sohail U. Ahmed - Director | Gift | Common Stock | 2,950 | $0.00 | - | |
| Sohail U. Ahmed - Director | Gift | Common Stock | 2,950 | $0.00 | - | |
| Sohail U. Ahmed - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
 John M. Dineen - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Ita M. Brennan - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Bethany Mayer - Director | Open-market sale | Common Stock | 30 footnote F2 | $159.52 | $5K | |
| Bethany Mayer - Director | Gift | Common Stock | 1,622 | $0.00 | - | |
| Bethany Mayer - Director | Gift | Common Stock | 1,622 | $0.00 | - | |
| Bethany Mayer - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| ||||||
| Michael R. Cannon - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Mark Fields - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
 Eric Brandt - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
 Abhijit Y. Talwalkar - Director | Grant or award | Common Stock | 1,635 | $0.00 | - | |
| Bethany Mayer - Director | Open-market sale | Common Stock | 1,298 footnote F1 | $159.99 | $208K | |
| ||||||
| Ho Kyu Kang - Director | Tax withholding / forfeiture | Common Stock | 664 footnote F1 | $157.46 | $105K | |
| ||||||
| Ava Harter - Officer | Open-market sale | Common Stock | 3,000 | $157.48 | $472K | |
| Ava Harter - Officer | Option exercise | Common Stock | 6,010 | $77.04 | $463K | |
| Ava Harter - Officer | Open-market sale | Common Stock | 6,010 | $157.46 | $946K | |
| Ava Harter - Officer | Option exercise | Employee Stock Option (Right to Buy) | 6,010 | $0.00 | - | |
| Vahid Vahedi - Officer | Open-market sale | Common Stock | 52,190 footnote F1 | $138.90 | $7.25M | |
| ||||||
| Ava Harter - Officer | Open-market purchase | Common Stock | 9.46 | $63.66 | $602 | |
| Ava Harter - Officer | Tax withholding / forfeiture | Common Stock | 5,270 | $96.68 | $510K | |
| Ho Kyu Kang - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Jyoti Mehra - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Sohail U. Ahmed - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| John M. Dineen - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Ita M. Brennan - Director | Grant or award | Common Stock | 737 | $0.00 | - | |
| Ita M. Brennan - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Bethany Mayer - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Abhijit Y. Talwalkar - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Michael R. Cannon - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
| Mark Fields - Director | Grant or award | Common Stock | 737 | $0.00 | - | |
| Mark Fields - Director | Grant or award | Common Stock | 2,950 | $0.00 | - | |
Recent LRCX Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| BETHANY MAYER | Director | 9,557 | $3.01M | View on EDGAR | |
| ARCHER TIMOTHY | Officer, Director | 30,000 |
Stock trades in LRCX disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 David J. TaylorRepublican, OH-02 | Sale |
LRCX insider trading FAQ
What is the latest insider trade for LRCX?
LAM RESEARCH CORP (LRCX) had 6 insider filings in the last 90 days, with the most recent on 2026-09-10. The full record for LRCX runs to 67 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying LRCX stock?
No insider purchases of LRCX were filed in the last 90 days. 1 purchase is on record for this company.
How many insiders are selling LRCX stock?
7 insider sales of LRCX were filed in the last 90 days, totaling $40.50M.
Where can I see LRCX SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects LRCX Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Industrials companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Timothy Archer view on EDGAR
- - Bethany Mayer view on EDGAR
- - Seshasayee Varadarajan view on EDGAR
- - Ava Harter view on EDGAR
- - Timothy Archer view on EDGAR
- - Ava Harter view on EDGAR
- - Abhijit Y. Talwalkar view on EDGAR
- - Timothy Archer view on EDGAR
- - Eric Brandt view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Industrials
- Where LRCX's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- Every LRCX Form 4 filing on record
- Up to 3 months of LRCX price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
