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. 99.4% of the shares are freely tradable; institutional investors hold 88.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.61 | 132,727,776 | -0.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.53 | 81,683,639 | +0.7 | 06/30/2026 |
| State Street Corp | 4.85 | 60,704,130 | +2.6 | 06/30/2026 |
| Amvescap Plc. | 4.18 | 52,319,973 | +3.7 | 06/30/2026 |
| JPMorgan Chase & Co | 3.62 | 45,317,479 | +38.5 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 2.93 | 36,635,534 | -1.1 | 06/30/2026 |
| Geode Capital Management, LLC | 2.76 | 34,506,240 | -1.9 | 06/30/2026 |
| FMR Inc | 2.69 | 33,677,858 | +0.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.17 | 39,718,888 | -0.1 | 09/30/2026 |
| Vanguard 500 Index Investor | 2.63 | 32,863,706 | -1.1 | 09/30/2026 |
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 | 248,225,356 $ | Oct 23, 2026 | direct |
| Varadarajan Seshasayee | Senior Vice President | 205,546 | 47,419,462 $ | Sep 2, 2026 | direct |
| Talwalkar Abhijit Y | Director | 87,142 | 20,103,659 $ | Jul 13, 2026 | direct |
| Harter Ava | Chief Legal Officer | 42,462 | 9,796,088 $ | Aug 31, 2026 | direct |
| Mayer Bethany | Director | 21,911 | 5,054,868 $ | Sep 9, 2026 | both |
| Kang Ho Kyu | Director | 9,173 | 2,116,211 $ | Oct 30, 2026 | direct |
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 |
|---|---|---|---|---|---|---|
| Nov 2, 2026 | Mayer Bethany | Director | Sell | 719 | 242.59 | 174,422 |
| Oct 30, 2026 | Kang Ho Kyu | Director | Other | 491 | 239.11 | 117,403 |
| Oct 23, 2026 | Archer Timothy | President and CEO | Sell | 31,400 | 227.02 | 7,128,428 |
| Oct 23, 2026 | Archer Timothy | President and CEO | Other | 31,400 | 30.03 | 943,036 |
| 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: November 3, 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.