Lam Research's three largest insider shareholders as of September 29, 2026 are Catherine P Lego (Director, 1.50Mn shares), Douglas R Bettinger (Chief Financial Officer Evp, 1.08Mn shares), Timothy Archer (President And Ceo, 1.08Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Catherine P Lego | Director | 1,499,730 | 0 | 1,499,730 | 21.1% | 27 Apr, 2022 |
| 2 | Douglas R Bettinger | Chief Financial Officer Evp | 1,081,705 | 0 | 1,081,705 | 15.2% | 05 Mar, 2026 |
| 3 | Timothy Archer | President And Ceo | 1,075,966 | 0 | 1,075,966 | 15.1% | 10 Sep, 2026 |
| 4 | Richard A Gottscho | Executive Vice President Cto | 911,940 | 0 | 911,940 | 12.8% | 02 Mar, 2023 |
| 5 | Scott Gerald Meikle | Senior Vice President | 688,620 | 0 | 688,620 | 9.7% | 02 Mar, 2023 |
| 6 | Vahid Vahedi | Senior Vice President | 276,896 | 0 | 276,896 | 3.9% | 02 Mar, 2026 |
| 7 | Lih Shyng (Rick) Tsai | Director | 223,770 | 0 | 223,770 | 3.1% | 13 Nov, 2023 |
| 8 | Seshasayee Varadarajan | Senior Vice President | 205,546 | 0 | 205,546 | 2.9% | 03 Sep, 2026 |
| 9 | Michael R Cannon | Director | 191,375 | 0 | 191,375 | 2.7% | 10 Nov, 2025 |
| 10 | George M Schisler | Chief Legal Officer | 169,830 | 0 | 169,830 | 2.4% | 06 May, 2024 |
| 11 | Eric Brandt | Director | 144,705 | 0 | 144,705 | 2.0% | 15 Jun, 2026 |
| 12 | Ava Hahn | Chief Legal Officer Svp | 102,990 | 0 | 102,990 | 1.4% | 04 Jan, 2024 |
| 13 | Patrick J Lord | Executive Vice President | 98,848 | 0 | 98,848 | 1.4% | 02 Mar, 2026 |
| 14 | Abhijit Y Talwalkar | Director | 87,142 | 0 | 87,142 | 1.2% | 14 Jul, 2026 |
| 15 | Leslie F Varon | Director | 85,020 | 0 | 85,020 | 1.2% | 13 Nov, 2023 |
| 16 | Neil J Fernandes | Senior Vice President | 58,470 | 0 | 58,470 | 0.8% | 02 Jun, 2026 |
| 17 | Christina Correia | Cvp , Chief Accounting Officer | 57,168 | 0 | 57,168 | 0.8% | 02 Mar, 2026 |
| 18 | Ava Harter | Chief Legal Officer | 42,462 | 0 | 42,462 | 0.6% | 01 Sep, 2026 |
| 19 | Sohail U Ahmed | Director | 1,635 | 33,580 | 35,215 | 0.5% | 10 Nov, 2025 |
| 20 | Bethany Mayer | Director | 0 | 20,995 | 20,995 | 0.3% | 10 Sep, 2026 |
| 21 | Jyoti Mehra | Director | 18,475 | 0 | 18,475 | 0.3% | 10 Nov, 2025 |
| 22 | Ho Kyu Kang | Director | 9,664 | 0 | 9,664 | 0.1% | 10 Nov, 2025 |
| 23 | John M. Dineen | Director | 9,135 | 0 | 9,135 | 0.1% | 10 Nov, 2025 |
| 24 | Ita M Brennan | Director | 5,342 | 0 | 5,342 | 0.1% | 10 Nov, 2025 |
| 25 | Mark Fields | Director | 5,322 | 0 | 5,322 | 0.1% | 10 Nov, 2025 |
| 26 | Anirudh Devgan | Director | 1,141 | 0 | 1,141 | 0.0% | 09 Feb, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | Timothy Archer | President And Ceo | Acquired M | 30,000 | $30.03 | $900.99K | 1,105,966 | Direct |
| 09 Sep, 2026 | Bethany Mayer | Director | Disposed S | 9,557 | $314.74 | $3.01Mn | 20,995 | Indirect |
| 09 Sep, 2026 | Timothy Archer | President And Ceo | Disposed S | 30,000 | $319.26 | $9.58Mn | 1,075,966 | Direct |
| 09 Sep, 2026 | Timothy Archer | President And Ceo | Disposed M | 30,000 | $0.00 | $0 | 31,400 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Disposed S | 20,000 | $291.32 | $5.83Mn | 205,546 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Acquired M | 12,270 | $59.88 | $734.74K | 217,816 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Disposed S | 12,270 | $291.32 | $3.57Mn | 205,546 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Acquired M | 27,480 | $30.03 | $825.31K | 233,026 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Disposed S | 27,480 | $291.32 | $8.01Mn | 205,546 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Disposed M | 12,270 | $0.00 | $0 | 0 | Direct |
| 02 Sep, 2026 | Seshasayee Varadarajan | Senior Vice President | Disposed M | 27,480 | $0.00 | $0 | 0 | Direct |
| 31 Aug, 2026 | Ava Harter | Chief Legal Officer | Disposed S | 5,000 | $302.46 | $1.51Mn | 42,462 | Direct |
| 06 Aug, 2026 | Timothy Archer | President And Ceo | Acquired M | 30,000 | $30.03 | $900.99K | 1,105,966 | Direct |
| 06 Aug, 2026 | Timothy Archer | President And Ceo | Disposed S | 30,000 | $300.00 | $9.00Mn | 1,075,966 | Direct |
| 06 Aug, 2026 | Timothy Archer | President And Ceo | Disposed M | 30,000 | $0.00 | $0 | 61,400 | Direct |
| 05 Aug, 2026 | Ava Harter | Chief Legal Officer | Disposed F | 5,790 | $307.42 | $1.78Mn | 47,462 | Direct |
| 13 Jul, 2026 | Abhijit Y Talwalkar | Director | Disposed S | 18,282 | $335.00 | $6.12Mn | 87,142 | Direct |
| 02 Jul, 2026 | Timothy Archer | President And Ceo | Acquired M | 30,000 | $30.03 | $900.99K | 1,105,966 | Direct |
| 02 Jul, 2026 | Timothy Archer | President And Ceo | Disposed S | 30,000 | $390.01 | $11.70Mn | 1,075,966 | Direct |
| 02 Jul, 2026 | Timothy Archer | President And Ceo | Disposed M | 30,000 | $0.00 | $0 | 91,400 | Direct |