19 insiders reported 149 Form 4 transactions for LAM RESEARCH CORP (LRCX) over the past 18 months (most recent 2026-09-10). Recent activity: ARCHER TIMOTHY (President and CEO) Buy 30,000 shares, Mayer Bethany (Director) Sell 9,557 shares, ARCHER TIMOTHY (President and CEO) Sell 30,000 shares, Varadarajan Seshasayee (Senior Vice President) Sell 20,000 shares, Varadarajan Seshasayee (Senior Vice President) Buy 12,270 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-10 | ARCHER TIMOTHY | President and CEO | Buy | 30,000 | $900,990 |
| 2026-09-10 | Mayer Bethany | Director | Sell | 9,557 | $3.0M |
| 2026-09-10 | ARCHER TIMOTHY | President and CEO | Sell | 30,000 | $9.6M |
| 2026-09-03 | Varadarajan Seshasayee | Senior Vice President | Sell | 20,000 | $5.8M |
| 2026-09-03 | Varadarajan Seshasayee | Senior Vice President | Buy | 12,270 | $734,740 |
| 2026-09-03 | Varadarajan Seshasayee | Senior Vice President | Sell | 12,270 | $3.6M |
| 2026-09-03 | Varadarajan Seshasayee | Senior Vice President | Buy | 27,480 | $825,307 |
| 2026-09-03 | Varadarajan Seshasayee | Senior Vice President | Sell | 27,480 | $8.0M |
| 2026-09-01 | Harter Ava | Chief Legal Officer | Sell | 5,000 | $1.5M |
| 2026-08-07 | ARCHER TIMOTHY | President and CEO | Buy | 30,000 | $900,990 |
| 2026-08-07 | ARCHER TIMOTHY | President and CEO | Sell | 30,000 | $9.0M |
| 2026-08-06 | Harter Ava | Chief Legal Officer | Sell | 5,790 | $1.8M |
| 2026-07-14 | TALWALKAR ABHIJIT Y | Director | Sell | 18,282 | $6.1M |
| 2026-07-06 | ARCHER TIMOTHY | President and CEO | Buy | 30,000 | $900,990 |
| 2026-07-06 | ARCHER TIMOTHY | President and CEO | Sell | 30,000 | $11.7M |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 1,200 | $438,192 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 300 | $106,713 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 1,393 | $497,635 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 1,100 | $393,778 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 3,828 | $1.4M |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 1,906 | $686,446 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 819 | $295,831 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 2,708 | $981,379 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 2,345 | $852,009 |
| 2026-06-15 | BRANDT ERIC | Director | Sell | 2,300 | $838,143 |
Source: SEC Form 4 filings · as of 2026-09-10