Insider Ledger
Lam Research Corp. (LRCX) insider buying and SEC filings
Lam Research Corp. · CIK 707549
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Special Industry Machinery, NEC
- State of incorporation
- DE
- Fiscal year end
- Jun 27
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$18.2M
Planned sales (10b5-1)
$135.7M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 2, 2026 | Planned (10b5-1) | Bethany Mayer (Director) sold 719 shares at $242.59 ($174K), marked as a 10b5-1 plan trade. Holdings down 44% to 916 shares. | SEC filing Filed Nov 3, 2026, 2:58 PM ET |
| Oct 23, 2026 | Planned (10b5-1) | Timothy Archer (CEO) sold 31,400 shares at $227.02 ($7.1M), marked as a 10b5-1 plan trade. Holdings down 3% to 1,075,966 shares. | SEC filing Filed Oct 26, 2026, 1:49 PM ET |
| Sep 9, 2026 | Sale | Bethany Mayer (Director) sold 9,557 shares indirectly (by trust) at about $314.74 ($3.0M). Holdings by trust down 31% to 20,995 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 10, 2026 |
| Sep 9, 2026 | Planned (10b5-1) | Timothy Archer (CEO) sold 30,000 shares at $319.26 ($9.6M), marked as a 10b5-1 plan trade. Holdings down 3% to 1,075,966 shares. | SEC filing Filed Sep 10, 2026 |
| Sep 2, 2026 | Planned (10b5-1) | Seshasayee Varadarajan (Senior Vice President) sold 59,750 shares at $291.32 ($17.4M), marked as a 10b5-1 plan trade. Holdings down 23% to 205,546 shares. | SEC filing Filed Sep 3, 2026 |
| Aug 31, 2026 | Planned (10b5-1) | Ava Harter (Chief Legal Officer) sold 5,000 shares at $302.46 ($1.5M), marked as a 10b5-1 plan trade. Holdings down 11% to 42,462 shares. | SEC filing Filed Sep 1, 2026 |
| Aug 6, 2026 | Planned (10b5-1) | Timothy Archer (CEO) sold 30,000 shares at $300.00 ($9.0M), marked as a 10b5-1 plan trade. Holdings down 3% to 1,075,966 shares. | SEC filing Filed Aug 7, 2026 |
| Jul 13, 2026 | Planned (10b5-1) | Abhijit Y. Talwalkar (Director) sold 18,282 shares at $335.00 ($6.1M), marked as a 10b5-1 plan trade. Holdings down 17% to 87,142 shares. | SEC filing Filed Jul 14, 2026 |
| Jul 2, 2026 | Planned (10b5-1) | Timothy Archer (CEO) sold 30,000 shares at $390.01 ($11.7M), marked as a 10b5-1 plan trade. Holdings down 3% to 1,075,966 shares. | SEC filing Filed Jul 6, 2026 |
| Jun 12, 2026 | Planned (10b5-1) | Eric Brandt (Director) sold 54,500 shares at about $367.18 ($20.0M), marked as a 10b5-1 plan trade. Holdings down 27% to 144,705 shares. | SEC filing Filed Jun 15, 2026 |
| Jun 11, 2026 | Planned (10b5-1) | Eric Brandt (Director) sold 54,500 shares at about $350.80 ($19.1M), marked as a 10b5-1 plan trade. Holdings down 21% to 199,205 shares. | SEC filing Filed Jun 15, 2026 |
| Jun 1, 2026 | Planned (10b5-1) | Neil J Fernandes (Senior Vice President) sold 7,659 shares at $309.60 ($2.4M), marked as a 10b5-1 plan trade. Holdings down 12% to 58,470 shares. | SEC filing Filed Jun 2, 2026 |
| May 1, 2026 | Planned (10b5-1) | Neil J Fernandes (Senior Vice President) sold 18,170 shares at $255.14 ($4.6M), marked as a 10b5-1 plan trade. Holdings down 22% to 66,129 shares. | SEC filing Filed May 4, 2026 |
| Mar 4, 2026 | Sale | Ava Harter (Chief Legal Officer) sold 1,500 shares at $222.66 ($334K). Holdings down 3% to 53,205 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 5, 2026 |
| Mar 2, 2026 | Sale | Ava Harter (Chief Legal Officer) sold 4,000 shares at $232.50 ($930K). Holdings down 7% to 54,705 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Feb 6, 2026 | Sale | Eric Brandt (Director) sold 35,000 shares at about $225.60 ($7.9M). Holdings down 12% to 253,705 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 9, 2026 |
| Dec 17, 2025 | Planned (10b5-1) | Timothy Archer (CEO) sold 163,300 shares at $163.86 ($26.8M), marked as a 10b5-1 plan trade. Holdings down 15% to 932,409 shares. | SEC filing Filed Dec 18, 2025 |
| Nov 14, 2025 | Sale | Douglas R Bettinger (CFO) sold 40,080 shares at about $150.60 ($6.0M). Holdings down 4% to 987,237 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 17, 2025 |
| Nov 7, 2025 | Planned (10b5-1) | Bethany Mayer (Director) sold 30 shares at $159.52 ($5K), marked as a 10b5-1 plan trade. Holdings down 1% to 3,257 shares. | SEC filing Filed Nov 10, 2025 |
| Nov 3, 2025 | Planned (10b5-1) | Bethany Mayer (Director) sold 1,298 shares at $159.99 ($208K), marked as a 10b5-1 plan trade. Holdings down 44% to 1,652 shares. | SEC filing Filed Nov 4, 2025 |
42 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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