Lam Research Corp
Ownership
Ownership Structure
Who owns Lam Research Corp (LRCX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.6% of the shares are freely tradable; institutional investors hold 88.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.62 | 132,852,320 | -1.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.49 | 81,155,744 | +0.0 | 03/31/2026 |
| State Street Corp | 4.73 | 59,158,300 | -0.9 | 03/31/2026 |
| Amvescap Plc. | 4.03 | 50,464,319 | -1.1 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 2.96 | 37,060,963 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.81 | 35,175,926 | +4.2 | 03/31/2026 |
| FMR Inc | 2.68 | 33,574,842 | +25.8 | 03/31/2026 |
| JPMorgan Chase & Co | 2.61 | 32,712,933 | +39.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 39,821,427 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 2.62 | 32,830,767 | +1.1 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Archer Timothy | President and CEO | 1,075,966 | 309,985,805 $ | Sep 9, 2026 | direct |
| Varadarajan Seshasayee | Senior Vice President | 205,546 | 59,217,803 $ | Sep 2, 2026 | direct |
| Talwalkar Abhijit Y | Director | 87,142 | 25,105,610 $ | Jul 13, 2026 | direct |
| Harter Ava | Chief Legal Officer | 42,462 | 12,233,433 $ | Aug 31, 2026 | direct |
| Mayer Bethany | Director | 20,995 | 6,048,660 $ | Sep 9, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 9, 2026 | Mayer Bethany | Director | Sell | 9,557 | 314.74 | 3,007,970 |
| Sep 9, 2026 | Archer Timothy | President and CEO | Sell | 30,000 | 319.26 | 9,577,800 |
| Sep 9, 2026 | Archer Timothy | President and CEO | Other | 30,000 | 30.03 | 900,990 |
| Sep 2, 2026 | Varadarajan Seshasayee | Senior Vice President | Sell | 27,480 | 291.32 | 8,005,474 |
| Sep 2, 2026 | Varadarajan Seshasayee | Senior Vice President | Other | 27,480 | 30.03 | 825,307 |
| Sep 2, 2026 | Varadarajan Seshasayee | Senior Vice President | Sell | 12,270 | 291.32 | 3,574,496 |
| Sep 2, 2026 | Varadarajan Seshasayee | Senior Vice President | Other | 12,270 | 59.88 | 734,740 |
| Sep 2, 2026 | Varadarajan Seshasayee | Senior Vice President | Sell | 20,000 | 291.32 | 5,826,400 |
| Aug 31, 2026 | Harter Ava | Chief Legal Officer | Sell | 5,000 | 302.46 | 1,512,300 |
| Aug 6, 2026 | Archer Timothy | President and CEO | Sell | 30,000 | 300.00 | 9,000,000 |
| Aug 6, 2026 | Archer Timothy | President and CEO | Other | 30,000 | 30.03 | 900,990 |
| Aug 5, 2026 | Harter Ava | Chief Legal Officer | Other | 5,790 | 307.42 | 1,779,962 |
| Jul 13, 2026 | Talwalkar Abhijit Y | Director | Sell | 18,282 | 335.00 | 6,124,470 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.