Lam Research Corp (LRCX): Congress and insider trades
Who in Congress and inside the company traded LRCX, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Lam Research Corp (LRCX) is a listed stock on NASDAQ.
- 19 members of Congress filed 43 buys and 41 sells of LRCX, the latest published 2026-09-07 (7 September 2026).
- Insiders filed 0 open market buys worth $0 and 11 sells worth $94M, the latest filed 2026-09-10 (10 September 2026).
- Across 29 scored buys, Congress averaged +8.7% against the S&P 500 (SPY) over the 90 days after disclosure, with 69% of them ahead of the index. That result is modestly above the market, but could still be chance.
- Data as of 2026-09-29 (29 September 2026).
Congress buys 43 19 members
Congress sells 41
Insider buys 0 $0
Insider sells 11 $94M
Congress buys vs S&P, 90d +8.7% 29 scored buys
Insider buys vs S&P, 90d n/a 0 scored buys
Congress trades in LRCX
as of 2026-09-07| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 7 Sep 2026 | Ro Khanna (D-CA) | sell | 1K–15K | 32 | n/a |
| 2 Sep 2026 | Sheldon Whitehouse (D-RI) | sell | 1K–15K | 20 | n/a |
| 21 Jul 2026 | Alan Armstrong (R-OK) | buy | 1K–15K | 116 | n/a |
| 21 Jul 2026 | Alan Armstrong (R-OK) | buy | 1K–15K | 113 | n/a |
| 8 Jul 2026 | Ro Khanna (D-CA) | buy | 1K–15K | 6 | n/a |
| 15 Jun 2026 | David Taylor (R-OH) | sell | 1K–15K | 7 | n/a |
| 8 May 2026 | David Taylor (R-OH) | sell | 1K–15K | 10 | n/a |
| 9 Apr 2026 | Ro Khanna (D-CA) | buy | 1K–15K | 8 | +23.1% |
| 23 Mar 2026 | David Taylor (R-OH) | buy | 1K–15K | 8 | +57.3% |
| 12 Mar 2026 | Tony Wied (R-WI) | sell | 50K–100K | 25 | n/a |
| 12 Mar 2026 | Tony Wied (R-WI) | sell | 50K–100K | 34 | n/a |
| 12 Mar 2026 | Tony Wied (R-WI) | sell | 50K–100K | 28 | n/a |
| 12 Mar 2026 | Ro Khanna (D-CA) | buy | 15K–50K | 32 | +59.1% |
| 9 Mar 2026 | David Taylor (R-OH) | sell | 1K–15K | 8 | n/a |
| 25 Feb 2026 | Cleo Fields (D-LA) | buy | 15K–50K | 21 | +24.4% |
| 15 Feb 2026 | John Boozman (R-AR) | sell | 1K–15K | 38 | n/a |
| 3 Feb 2026 | David Taylor (R-OH) | sell | 1K–15K | 17 | n/a |
| 22 Jan 2026 | David Taylor (R-OH) | sell | 15K–50K | 13 | n/a |
| 16 Jan 2026 | Markwayne Mullin (R-OK) | buy | 50K–100K | 18 | +13.6% |
| 15 May 2025 | Julie Johnson (D-TX) | sell | 1K–15K | 37 | n/a |
| 15 May 2025 | Tony Wied (R-WI) | buy | 15K–50K | 13 | +18.6% |
| 15 May 2025 | Ro Khanna (D-CA) | sell | 1K–15K | 19 | n/a |
| 15 May 2025 | Ro Khanna (D-CA) | sell | 15K–50K | 27 | n/a |
| 14 May 2025 | John Boozman (R-AR) | sell | 1K–15K | 28 | n/a |
| 12 May 2025 | Markwayne Mullin (R-OK) | sell | 50K–100K | 34 | n/a |
| 9 May 2025 | Rob Bresnahan (R-PA) | sell | 1K–15K | 30 | n/a |
| 9 May 2025 | Jefferson Shreve (R-IN) | sell | 15K–50K | 31 | n/a |
| 10 Nov 2023 | Ro Khanna (D-CA) | sell | 15K–50K | 29 | n/a |
| 9 Nov 2023 | Greg Stanton (D-AZ) | sell | 1K–15K | 16 | n/a |
| 9 Nov 2023 | Greg Stanton (D-AZ) | buy | 1K–15K | 44 | +12.9% |
| 1 Nov 2023 | Markwayne Mullin (R-OK) | buy | 1K–15K | 29 | +20.2% |
| 12 Oct 2023 | Markwayne Mullin (R-OK) | buy | 15K–50K | 29 | +7.3% |
| 22 Sep 2023 | Dan Sullivan (R-AK) | sell | 1K–15K | 31 | n/a |
| 7 Sep 2023 | Ro Khanna (D-CA) | sell | 1K–15K | 34 | n/a |
| 8 Aug 2023 | John Curtis (R-UT) | sell | 1K–15K | 47 | n/a |
| 26 Jul 2023 | Dan Sullivan (R-AK) | buy | 1K–15K | 238 | -9.2% |
| 13 Jul 2023 | John Boozman (R-AR) | sell | 1K–15K | 12 | n/a |
| 14 Jun 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 20 | +5.1% |
| 22 May 2023 | Kathy Manning (D-NC) | buy | 1K–15K | 21 | +10.5% |
| 20 Mar 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 31 | +10.5% |
| 1 Mar 2023 | Bill Keating (D-MA) | buy | 1K–15K | 15 | +20.9% |
| 20 Feb 2023 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 37 | n/a |
| 4 Jan 2023 | Ro Khanna (D-CA) | sell | 1K–15K | 28 | n/a |
| 4 Jan 2023 | Ro Khanna (D-CA) | sell | 1K–15K | 28 | n/a |
| 11 Nov 2022 | Kathy Manning (D-NC) | sell | 1K–15K | 29 | n/a |
| 12 Oct 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 29 | +28.3% |
| 12 Oct 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 31 | +28.3% |
| 12 Oct 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 8 | +28.3% |
| 9 Sep 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 38 | +4.9% |
| 9 Sep 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 16 | +4.9% |
| 12 Aug 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 21 | +3.9% |
| 11 Aug 2022 | Kathy Manning (D-NC) | buy | 1K–15K | 14 | +1.2% |
| 11 Aug 2022 | Kathy Manning (D-NC) | buy | 1K–15K | 14 | +1.2% |
| 11 Jul 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 10 | -8.2% |
| 11 Jul 2022 | Ro Khanna (D-CA) | sell | 15K–50K | 21 | n/a |
| 15 Jun 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 18 | n/a |
| 15 Jun 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 31 | n/a |
| 15 Jun 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 36 | -6.9% |
| 12 May 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 15 | -3.5% |
| 12 May 2022 | Ro Khanna (D-CA) | buy | 15K–50K | 25 | -3.5% |
| 12 May 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 23 | -3.5% |
| 11 Mar 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 22 | n/a |
| 21 Feb 2022 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 23 | n/a |
| 9 Feb 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 19 | -12.3% |
| 10 Jan 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 31 | -23.0% |
| 14 Dec 2021 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 35 | n/a |
| 8 Dec 2021 | Ro Khanna (D-CA) | sell | 1K–15K | 35 | n/a |
| 16 Nov 2021 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 17 | n/a |
| 10 Nov 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 33 | +0.2% |
| 15 Oct 2021 | Ro Khanna (D-CA) | sell | 1K–15K | 16 | n/a |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 22 | +5.1% |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 30 | +5.1% |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 29 | +5.1% |
| 16 Jul 2021 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 36 | -9.6% |
| 7 Jul 2021 | John Curtis (R-UT) | sell | 1K–15K | 14 | n/a |
| 11 Jun 2021 | John Boozman (R-AR) | sell | 1K–15K | 38 | n/a |
| 7 May 2021 | Kathy Manning (D-NC) | buy | 15K–50K | 6 | +4.5% |
| 7 May 2021 | Kathy Manning (D-NC) | buy | 1K–15K | 6 | +4.5% |
| 1 May 2021 | Deborah Ross (D-NC) | buy | 15K–50K | 3 | -1.7% |
| 28 Apr 2021 | Bill Keating (D-MA) | buy | 1K–15K | 41 | -5.5% |
| 22 Apr 2021 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 21 | n/a |
| 11 Feb 2021 | John Boozman (R-AR) | sell | 1K–15K | 19 | n/a |
| 30 Dec 2020 | Kenny Marchant (R-TX) | buy | 15K–50K | 40 | n/a |
| 30 Dec 2020 | Kenny Marchant (R-TX) | buy | 15K–50K | 40 | n/a |
Nothing matches that search.
Insider trades in LRCX
as of 2026-09-10| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 10 Sep 2026 | Mayer Bethany | sell | 9,557 | $314.74 | $3.0M | n/a |
| 10 Sep 2026 | ARCHER TIMOTHY | sell | 30,000 | $319.26 | $9.6M | n/a |
| 3 Sep 2026 | Varadarajan Seshasayee | sell | 59,750 | $291.32 | $17M | n/a |
| 1 Sep 2026 | Harter Ava | sell | 5,000 | $302.46 | $1.5M | n/a |
| 7 Aug 2026 | ARCHER TIMOTHY | sell | 30,000 | $300.00 | $9.0M | n/a |
| 14 Jul 2026 | TALWALKAR ABHIJIT Y | sell | 18,282 | $335.00 | $6.1M | n/a |
| 15 Jun 2026 | BRANDT ERIC | sell | 54,500 | $367.18 | $20M | n/a |
| 15 Jun 2026 | BRANDT ERIC | sell | 54,500 | $350.80 | $19M | n/a |
| 2 Jun 2026 | Fernandes Neil J | sell | 7,659 | $309.60 | $2.4M | n/a |
| 4 May 2026 | Fernandes Neil J | sell | 18,170 | $255.14 | $4.6M | n/a |
| 28 Apr 2026 | Harter Ava | sell | 6,010 | $258.66 | $1.6M | n/a |
Nothing matches that search.
Related pages
Frequently asked questions
Who has bought LRCX?
43 Congress buys by 19 members and 0 insider buys are on file. The tables on this page list every one.
Did buying LRCX after a disclosure beat the market?
Across 29 scored buys, Congress averaged +8.7% against the S&P 500 (SPY) over the 90 days after disclosure, with 69% of them ahead of the index. That result is modestly above the market, but could still be chance. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.