LRCX
LAM RESEARCH CORP · Manufacturing · Market cap $317.6B
Insiders sold $47.6M net in the last 90 days ·4 sellers, 0 buyers· 5 of 6 sales under Rule 10b5-1 plans· latest Form 4 filed Oct 26, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$175.8M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Latest filing
Oct 26, 2026
ARCHER TIMOTHY
LAM RESEARCH CORP (LRCX) has 51 SEC Form 4 filings (145 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Oct 26, 2026.
Inside the rolling window, 8 insiders at LAM RESEARCH CORP reported no open-market purchases and 22 open-market sales totaling $175.8M. The most active filer is President and CEO ARCHER TIMOTHY with 5 filings. Insiders have net sold $111.6M over the trailing 6 months. The most recent open-market filing is a sale of 31,400 shares by President and CEO ARCHER TIMOTHY, dated Oct 23, 2026, worth $7.1M.
- Industry:Semiconductors
- CEO:Timothy Archer
- Employees:23,300
- HQ:Fremont, CA, US
- IPO:1984-05-04
| Source | |||||||
|---|---|---|---|---|---|---|---|
| President and CEO | Sale | 31,400 | $7.1M | Oct 26 | +6.9% | SEC ↗ | |
| President and CEO | Sale | 30,000 | $9.6M | Sep 10 | -14.8% | SEC ↗ | |
| Director | Sale | 9,557 | $3.0M | Sep 10 | -14.8% | SEC ↗ | |
Varadarajan SeshasayeeFirst filing | Senior Vice President | Sale | 59,750 | $17.4M | Sep 3 | -13.3% | SEC ↗ |
Harter AvaFirst in 4 months | Chief Legal Officer | Sale | 5,000 | $1.5M | Sep 1 | -12.5% | SEC ↗ |
| President and CEO | Sale | 30,000 | $9.0M | Aug 7 | -18.5% | SEC ↗ | |
| Director | Sale | 18,282 | $6.1M | Jul 14 | -26.7% | SEC ↗ | |
ARCHER TIMOTHYFirst in 7 months | President and CEO | Sale | 30,000 | $11.7M | Jul 6 | -27.5% | SEC ↗ |
| Director | Sale | 54,500 | $20.0M | Jun 15 | — | SEC ↗ | |
BRANDT ERICFirst in 4 months | Director | Sale | 54,500 | $19.1M | Jun 15 | — | SEC ↗ |
| Senior Vice President | Sale | 7,659 | $2.4M | Jun 2 | — | SEC ↗ | |
Fernandes Neil JFirst filing | Senior Vice President | Sale | 18,170 | $4.6M | May 4 | — | SEC ↗ |
| Chief Legal Officer | Sale | 6,010 | $1.6M | Apr 28 | — | SEC ↗ | |
| Chief Financial Officer & EVP | Sale | 50,057 | $11.2M | Mar 5 | — | SEC ↗ | |
| Chief Legal Officer | Sale | 1,500 | $334K | Mar 5 | — | SEC ↗ | |
Bettinger Douglas RFirst in 4 months | Chief Financial Officer & EVP | Sale | 40,329 | $9.3M | Mar 3 | — | SEC ↗ |
Harter AvaFirst filing | Chief Legal Officer | Sale | 4,000 | $930K | Mar 3 | — | SEC ↗ |
BRANDT ERICFirst filing | Director | Sale | 35,000 | $7.9M | Feb 9 | — | SEC ↗ |
ARCHER TIMOTHYFirst filing | President and CEO | Sale | 163,300 | $26.8M | Dec 18 | — | SEC ↗ |
Bettinger Douglas RFirst filing | Chief Financial Officer & EVP | Sale | 40,080 | $6.0M | Nov 17 | — | SEC ↗ |
| Director | Sale | 30 | $5K | Nov 10 | — | SEC ↗ | |
Mayer BethanyFirst filing | Director | Sale | 1,298 | $208K | Nov 4 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading LRCX 144 all-time
- DSen. Sheldon WhitehouseSale$1,001 - $15,0002026-08-13
- DSen. Sheldon WhitehouseOther$1,001 - $15,0002026-08-13
- RRep. David TaylorSale$1,001 - $15,0002026-06-05
- RRep. David J. TaylorSale$1,001 - $15,0002026-06-05
- RRep. David TaylorSale$1,001 - $15,0002026-04-27
- RRep. David J. TaylorSale$1,001 - $15,0002026-04-27
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does LRCX have?
LAM RESEARCH CORP (LRCX) has 51 SEC Form 4 filings (145 transaction rows) in the rolling 365-day window, disclosed by 8 distinct insiders. Most recent filing: Oct 26, 2026.
When was the most recent SEC Form 4 filing for LRCX?
The most recent Form 4 filing for LRCX on Tracefour is dated Oct 26, 2026.
Who is the most active insider at LRCX?
The most active SEC Form 4 filer at LRCX in the rolling window is President and CEO ARCHER TIMOTHY, with 5 filings.
What is the net insider flow at LRCX over the last 6 months?
Over the trailing 180 days, insiders at LRCX have net sold $111.6M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at LRCX in the current window?
Inside the rolling window, insiders at LRCX bought $0 and sold $175.8M based on SEC Form 4 filings.
Can I get alerts for LRCX insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at LAM RESEARCH CORP (LRCX). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
LAM RESEARCH CORP is in the Manufacturing sector.