Massivemarkets

SEC Form 4

Lam Research Corp (LRCX) insider trading

In the 12 months to Oct 24, 2026, 8 LRCX insiders reported open-market sales of $170.1M across 22 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$170.1M
22 filings · 8 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
13 of 22
$128.4M of $170.1M sold (75%)

Who traded LRCX, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

LRCX daily close from Oct 24, 2025 to Oct 23, 2026, between $139.59 and $433.33, last $230.10. 22 sale and 0 purchase filings by 8 insiders, marked at their filing dates. Timothy Archer, President and CEO: sold $57.0M across 4 filings, first filed Dec 18, 2025, last Sep 10, 2026. Eric Brandt, Director: sold $47.0M across 3 filings, first filed Feb 9, 2026, last Jun 15, 2026. Douglas R. Bettinger, Chief Financial Officer & EVP: sold $26.5M across 3 filings, first filed Nov 17, 2025, last Mar 5, 2026. Seshasayee Varadarajan, Senior Vice President: sold $17.4M across 1 filing, first filed Sep 3, 2026, last Sep 3, 2026. Neil J. Fernandes, Senior Vice President: sold $7.0M across 2 filings, first filed May 4, 2026, last Jun 2, 2026. Abhijit Y. Talwalkar, Director: sold $6.1M across 1 filing, first filed Jul 14, 2026, last Jul 14, 2026. 2 others: sold $9.0M across 8 filings, first filed Oct 28, 2025, last Sep 10, 2026.

Largest mark · tap a row for others

Eric Brandt · Director

Filing 1 of 2 within a week · $39,129,706 total

Sale $19,118,360

54,500 shares at $350.80 avg

Filed Jun 15, 2026 · traded Jun 11

Pre-arranged (10b5-1) · close on filing date $388.92

LRCX daily closelast $230.10

Timothy Archer · President and CEO

$57.0M sold

Eric Brandt · Director

$47.0M sold

Douglas R. Bettinger · Chief Financial Officer & EVP

$26.5M sold

Seshasayee Varadarajan · Senior Vice President

$17.4M sold

Neil J. Fernandes · Senior Vice President

$7.0M sold

Abhijit Y. Talwalkar · Director

$6.1M sold

2 others

$9.0M sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Has Lam Research Corp's CEO sold stock?

Yes. Timothy Archer (CEO) sold 253,300 shares ($57.0M) between Dec 2025 and Sep 2026, all under a pre-arranged 10b5-1 plan.

Open-market trades

22 filings in the last 12 months
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Timothy ArcherPresident and CEO$57.0M—4100% of sales
Eric BrandtDirector$47.0M—383% of sales
Douglas R. BettingerChief Financial Officer & EVP$26.5M—3—
Seshasayee VaradarajanSenior Vice President$17.4M—1100% of sales
Neil J. FernandesSenior Vice President$7.0M—2100% of sales
Abhijit Y. TalwalkarDirector$6.1M—1100% of sales
Ava HarterChief Legal Officer$5.7M—526% of sales
Bethany MayerDirector$3.2M—37% of sales
Other insider activity (not market trades) · 78 records
  • Option exercises20 records
  • Tax withholding33 records
  • Grants and awards19 records
  • Gifts6 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

Build this yourself

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Agent prompt

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for LRCX every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.