LRCXLam Research Corporation
Technology · Semiconductor Equipment & MaterialsNasdaqStockMkt cap $400.4B
Disclosed trades
84
0 in 30d · 1 in 90d
Politicians
22
Last trade Aug 13, 2026
Buys
32
$421K at range midpoints
Sells
52
$703.5K at range midpoints
Closing price · 365 days
Sep 24, 2025 – Sep 23, 2026
Monthly buys vs sells · 24 months
Counts of disclosed transactions
- Buys
- Sells (incl. partial)
Politicians who traded it
| Politician | Seat | Trades | Buys | Sells | Bought (mid) | Sold (mid) | Last trade |
|---|---|---|---|---|---|---|---|
| RDavid J. Taylor | House · OH-02 | 13 | 1 | 12 | $8K | $145K | Jun 5, 2026 |
| DKathy E. Manning | House · NC-06 | 11 | 7 | 4 | $80.5K | $56.5K | Jul 2, 2024 |
| DJosh Gottheimer | House · NJ-05 | 10 | 3 | 7 | $24K | $56K | Oct 22, 2024 |
| RJohn Boozman | Senate · AR | 6 | 0 | 6 | $0 | $48K | Jan 8, 2026 |
| RDan Sullivan | Senate · AK | 4 | 2 | 2 | $16K | $16K | Aug 22, 2023 |
| RJefferson Shreve | House · IN-06 | 4 | 1 | 3 | $75K | $140K | May 12, 2025 |
| DJonathan L. Jackson | House · IL-01 | 4 | 2 | 2 | $40.5K | $40.5K | Sep 3, 2025 |
| RMarjorie Taylor Greene | House · GA-14 | 4 | 4 | 0 | $32K | $0 | Apr 4, 2025 |
| RJohn James | House · MI-10 | 3 | 1 | 2 | $8K | $16K | Sep 4, 2024 |
| RJohn R. Curtis | Senate · UT | 3 | 0 | 3 | $0 | $24K | Dec 4, 2023 |
| DSheldon Whitehouse | Senate · RI | 3 | 0 | 3 | $0 | $73K | Aug 13, 2026 |
| DVal T. Hoyle | House · OR-04 | 3 | 1 | 2 | $8K | $16K | Sep 23, 2025 |
| DWilliam R. Keating | House · MA-09 | 3 | 2 | 1 | $16K | $8K | Jan 24, 2025 |
| RAlan Armstrong | Senate · OK | 2 | 2 | 0 | $16K | $0 | Mar 30, 2026 |
| RByron Donalds | House · FL-19 | 2 | 2 | 0 | $16K | $0 | Aug 7, 2025 |
| DGreg Stanton | House · AZ-04 | 2 | 1 | 1 | $8K | $8K | Oct 24, 2023 |
| RRobert P. Bresnahan, Jr. | House · PA-08 | 2 | 1 | 1 | $8K | $8K | Apr 8, 2025 |
| DCleo Fields | House · LA-06 | 1 | 1 | 0 | $32.5K | $0 | Feb 3, 2026 |
| DDeborah K. Ross | House · NC-02 | 1 | 1 | 0 | $32.5K | $0 | Apr 27, 2021 |
| DGilbert Ray Cisneros, Jr. | House · CA-31 | 1 | 0 | 1 | $0 | $32.5K | Jan 28, 2025 |
| DJulie Johnson | House · TX-32 | 1 | 0 | 1 | $0 | $8K | Apr 7, 2025 |
| RTommy Tuberville | Senate · AL | 1 | 0 | 1 | $0 | $8K | Jan 19, 2024 |
Recent trades
| Politician | Ticker | Asset | Type | Owner | Amount | Traded | Filed | Source |
|---|---|---|---|---|---|---|---|---|
| DSheldon Whitehouse | LRCX | Lam Research Corporation - Common Stock | Partial | Spouse | $1,001 - $15,000 | Aug 13, 2026 | Sep 2, 202620d | Filing |
| RAlan Armstrong | LRCX | Lam Research Corporation (LRCX) | Buy | Self | $1,001 - $15,000 | Mar 30, 2026 | Jul 21, 2026113d | Filing |
| RAlan Armstrong | LRCX | Lam Research Corporation - Common Stock | Buy | Self | $1,001 - $15,000 | Mar 27, 2026 | Jul 21, 2026116d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Jun 5, 2026 | Jun 12, 20267d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Apr 27, 2026 | May 7, 202610d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Apr 27, 2026 | May 7, 202610d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Mar 12, 2026 | Mar 20, 20268d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Feb 26, 2026 | Mar 6, 20268d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Feb 26, 2026 | Mar 6, 20268d | Filing |
| DCleo Fields | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $15,001 - $50,000 | Feb 3, 2026 | Feb 24, 202621d | Filing |
| RJohn Boozman | LRCX | Lam Research Corp | Partial | Joint | $1,001 - $15,000 | Jan 8, 2026 | Feb 15, 202638d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Jan 16, 2026 | Feb 2, 202617d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $15,001 - $50,000 | Jan 8, 2026 | Jan 21, 202613d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $15,001 - $50,000 | Jan 8, 2026 | Jan 21, 202613d | Filing |
| DJonathan L. Jackson | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Spouse | $1,001 - $15,000 | Sep 3, 2025 | Oct 15, 202542d | Filing |
| DVal T. Hoyle | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Spouse | $1,001 - $15,000 | Sep 23, 2025 | Oct 10, 202517d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Sep 22, 2025 | Oct 7, 202515d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Sep 22, 2025 | Oct 7, 202515d | Filing |
| DJonathan L. Jackson | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Spouse | $1,001 - $15,000 | Aug 13, 2025 | Sep 23, 202541d | Filing |
| DVal T. Hoyle | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Spouse | $1,001 - $15,000 | Feb 4, 2025 | Sep 12, 2025220d | Filing |
| DVal T. Hoyle | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Spouse | $1,001 - $15,000 | Oct 29, 2024 | Sep 12, 2025318d | Filing |
| RByron Donalds | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Aug 7, 2025 | Sep 5, 202529d | Filing |
| RByron Donalds | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Spouse | $1,001 - $15,000 | Aug 7, 2025 | Sep 5, 202529d | Filing |
| DSheldon Whitehouse | LRCX | Lam Research Corp | Partial | Spouse | $15,001 - $50,000 | Aug 28, 2025 | Sep 3, 20256d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Jul 18, 2025 | Sep 2, 202546d | Filing |
| RDavid J. Taylor | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Jul 18, 2025 | Sep 2, 202546d | Filing |
| RJefferson Shreve | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $15,001 - $50,000 | May 12, 2025 | Jun 22, 202541d | Filing |
| RJohn Boozman | LRCX | Lam Research Corp | Partial | Joint | $1,001 - $15,000 | Apr 16, 2025 | May 14, 202528d | Filing |
| DJulie Johnson | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Joint | $1,001 - $15,000 | Apr 7, 2025 | May 14, 202537d | Filing |
| RRobert P. Bresnahan, Jr. | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Apr 8, 2025 | May 8, 202530d | Filing |
| RJefferson Shreve | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Self | $15,001 - $50,000 | Apr 7, 2025 | May 8, 202531d | Filing |
| RJefferson Shreve | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $50,001 - $100,000 | Mar 31, 2025 | Apr 11, 202511d | Filing |
| RJefferson Shreve | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Self | $50,001 - $100,000 | Mar 5, 2025 | Apr 11, 202537d | Filing |
| RMarjorie Taylor Greene | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Apr 4, 2025 | Apr 7, 20253d | Filing |
| RJohn Boozman | LRCX | Lam Research Corp | Partial | Joint | $1,001 - $15,000 | Feb 5, 2025 | Mar 6, 202529d | Filing |
| DWilliam R. Keating | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Jan 24, 2025 | Feb 25, 202532d | Filing |
| RRobert P. Bresnahan, Jr. | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Jan 16, 2025 | Feb 13, 202528d | Filing |
| DGilbert Ray Cisneros, Jr. | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Self | $15,001 - $50,000 | Jan 28, 2025 | Feb 11, 202514d | Filing |
| DSheldon Whitehouse | LRCX | Lam Research Corp | Sell | Self | $15,001 - $50,000 | Dec 19, 2024 | Jan 8, 202520d | Filing |
| RMarjorie Taylor Greene | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Nov 25, 2024 | Nov 27, 20242d | Filing |
| DJosh Gottheimer | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Joint | $1,001 - $15,000 | Oct 22, 2024 | Nov 6, 202415d | Filing |
| DJosh Gottheimer | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Joint | $1,001 - $15,000 | Oct 17, 2024 | Nov 6, 202420d | Filing |
| RMarjorie Taylor Greene | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Oct 4, 2024 | Oct 8, 20244d | Filing |
| DJosh Gottheimer | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Joint | $1,001 - $15,000 | Sep 23, 2024 | Oct 3, 202410d | Filing |
| RMarjorie Taylor Greene | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Sep 20, 2024 | Sep 23, 20243d | Filing |
| DJonathan L. Jackson | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Joint | $15,001 - $50,000 | Aug 26, 2024 | Sep 20, 202425d | Filing |
| RJohn James | LRCX | Lam Research Corporation - Common Stock (LRCX) | Sell | Self | $1,001 - $15,000 | Sep 4, 2024 | Sep 6, 20242d | Filing |
| RJohn James | LRCX | Lam Research Corporation - Common Stock (LRCX) | Partial | Self | $1,001 - $15,000 | Jul 30, 2024 | Sep 2, 202434d | Filing |
| RJohn James | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Self | $1,001 - $15,000 | Nov 10, 2023 | Sep 2, 2024297d | Filing |
| DKathy E. Manning | LRCX | Lam Research Corporation - Common Stock (LRCX) | Buy | Spouse | $1,001 - $15,000 | Jul 2, 2024 | Aug 16, 202445d | Filing |
Insider activity Filed
Insiders
21
Special Industry Machinery, NEC
Open-market buys · 90d
0
$0 bought
Open-market sells · 90d
9
$58.3M sold
Net · 90d
-$58.3M
-$177.4M net over 12 months · last Sep 9, 2026
| Date | Insider | Kind | Security | Shares | Price | Value | Post-holdings | D/I | 10b5-1 | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 9, 2026filed Sep 10, 2026 | Timothy ArcherPresident and CEO | Exercise | Employee Stock Option (Right to Buy)deriv. | −30,000 | $0.00 | — | 31,400 | D | 10b5-1 | 4 |
| Sep 9, 2026filed Sep 10, 2026 | Timothy ArcherPresident and CEO | Sale | Common Stock | −30,000 | $319.26 | $9,577,800 | 1,075,966 | D | 10b5-1 | 4 |
| Sep 9, 2026filed Sep 10, 2026 | Timothy ArcherPresident and CEO | Exercise | Common Stock | 30,000 | $30.03 | $900,990 | 1,105,966 | D | 10b5-1 | 4 |
| Sep 9, 2026filed Sep 10, 2026 | Bethany Mayer | Sale | Common Stock | −9,557 | $314.74 | $3,007,970 | 20,995 | I | — | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Exercise | Employee Stock Option (Right to Buy)deriv. | −27,480 | $0.00 | — | 0 | D | 10b5-1 | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Exercise | Employee Stock Option (Right to Buy)deriv. | −12,270 | $0.00 | — | 0 | D | 10b5-1 | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Sale | Common Stock | −27,480 | $291.32 | $8,005,474 | 205,546 | D | 10b5-1 | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Exercise | Common Stock | 27,480 | $30.03 | $825,307 | 233,026 | D | 10b5-1 | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Sale | Common Stock | −12,270 | $291.32 | $3,574,496 | 205,546 | D | 10b5-1 | 4 |
| Sep 2, 2026filed Sep 3, 2026 | Seshasayee VaradarajanSenior Vice President | Exercise | Common Stock | 12,270 | $59.88 | $734,740 | 217,816 | D | 10b5-1 | 4 |
Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4. Net figures count open-market buys minus open-market sales only (awards, exercises, withholding and gifts are excluded).
Unusual activity Estimated
- 29Exec saleSep 9, 2026
LRCX CEO Timothy Archer sold $9.6M (10b5-1 plan)
Details
- Insider
- Timothy Archer
- Company
- LAM RESEARCH CORP
- Ticker
- LRCX
- Tx kind
- open_market_sale
- Tx date
- Sep 9, 2026
- Shares
- 30,000
- Price
- $319
- Value
- $9.6M
- Is 10b5 1
- Yes
- 50Insider overlapAug 13, 2026
Sen. Sheldon Whitehouse partially sold LRCX 7 days after its CEO sold $9M
Details
- Politician
- Sheldon Whitehouse
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock
- Tx type
- partial_sale
- Tx date
- Aug 13, 2026
- Filing date
- Sep 2, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 20
- Is whale
- No
- Insider trade
- {"insider":{"slug":"timothy-archer","name":"Timothy Archer","title":"President and CEO","short_title":"CEO"},"company":"LAM RESEARCH CORP","ticker":"LRCX","tx_kind":"open_market_sale","tx_date":"2026-08-06","shares":30000,"price":300,"value":9000000,"is_10b5_1":true}
- Days between
- 7
- Opposite side
- No
- 29Exec saleAug 6, 2026
LRCX CEO Timothy Archer sold $9M (10b5-1 plan)
Details
- Insider
- Timothy Archer
- Company
- LAM RESEARCH CORP
- Ticker
- LRCX
- Tx kind
- open_market_sale
- Tx date
- Aug 6, 2026
- Shares
- 30,000
- Price
- $300
- Value
- $9M
- Is 10b5 1
- Yes
- 31Exec saleJul 2, 2026
LRCX CEO Timothy Archer sold $11.7M (10b5-1 plan)
Details
- Insider
- Timothy Archer
- Company
- LAM RESEARCH CORP
- Ticker
- LRCX
- Tx kind
- open_market_sale
- Tx date
- Jul 2, 2026
- Shares
- 30,000
- Price
- $390
- Value
- $11.7M
- Is 10b5 1
- Yes
- 50Insider overlapJun 5, 2026
Rep. David J. Taylor sold LRCX 27 days before its CEO sold $11.7M
Details
- Politician
- David J. Taylor
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock (LRCX)
- Tx type
- sell
- Tx date
- Jun 5, 2026
- Filing date
- Jun 12, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 7
- Is whale
- No
- Insider trade
- {"insider":{"slug":"timothy-archer","name":"Timothy Archer","title":"President and CEO","short_title":"CEO"},"company":"LAM RESEARCH CORP","ticker":"LRCX","tx_kind":"open_market_sale","tx_date":"2026-07-02","shares":30000,"price":390.01,"value":11700300,"is_10b5_1":true}
- Days between
- -27
- Opposite side
- No
- 70Well timedMar 30, 2026
Sen. Alan Armstrong's LRCX buy is up 45% after 30 days
Details
- Politician
- Alan Armstrong
- Ticker
- LRCX
- Asset
- Lam Research Corporation (LRCX)
- Tx type
- buy
- Tx date
- Mar 30, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 113
- Is whale
- No
- Entry date
- Mar 30, 2026
- Entry close
- 199.93
- Exit date
- May 12, 2026
- Exit close
- 289.24
- Forward return
- +44.7%
- Sign adjusted return
- +44.7%
- N trading days
- 30
- 65Insider overlapMar 30, 2026
Sen. Alan Armstrong bought LRCX 26 days after its CFO sold $11.2M
Details
- Politician
- Alan Armstrong
- Ticker
- LRCX
- Asset
- Lam Research Corporation (LRCX)
- Tx type
- buy
- Tx date
- Mar 30, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 113
- Is whale
- No
- Insider trade
- {"insider":{"slug":"douglas-r-bettinger","name":"Douglas R Bettinger","title":"Chief Financial Officer & EVP","short_title":"CFO"},"company":"LAM RESEARCH CORP","ticker":"LRCX","tx_kind":"open_market_sale","tx_date":"2026-03-04","shares":50057,"price":224.03,"value":11214269.71,"is_10b5_1":false}
- Days between
- 26
- Opposite side
- Yes
- 65Well timedMar 27, 2026
Sen. Alan Armstrong's LRCX buy is up 40% after 30 days
Details
- Politician
- Alan Armstrong
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock
- Tx type
- buy
- Tx date
- Mar 27, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 116
- Is whale
- No
- Entry date
- Mar 27, 2026
- Entry close
- 211.41
- Exit date
- May 11, 2026
- Exit close
- 296.05
- Forward return
- +40.0%
- Sign adjusted return
- +40.0%
- N trading days
- 30
- 65Insider overlapMar 27, 2026
Sen. Alan Armstrong bought LRCX 23 days after its CFO sold $11.2M
Details
- Politician
- Alan Armstrong
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock
- Tx type
- buy
- Tx date
- Mar 27, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 116
- Is whale
- No
- Insider trade
- {"insider":{"slug":"douglas-r-bettinger","name":"Douglas R Bettinger","title":"Chief Financial Officer & EVP","short_title":"CFO"},"company":"LAM RESEARCH CORP","ticker":"LRCX","tx_kind":"open_market_sale","tx_date":"2026-03-04","shares":50057,"price":224.03,"value":11214269.71,"is_10b5_1":false}
- Days between
- 23
- Opposite side
- Yes
- 65Insider overlapMar 12, 2026
Rep. David J. Taylor bought LRCX 8 days after its CFO sold $11.2M
Details
- Politician
- David J. Taylor
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock (LRCX)
- Tx type
- buy
- Tx date
- Mar 12, 2026
- Filing date
- Mar 20, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 8
- Is whale
- No
- Insider trade
- {"insider":{"slug":"douglas-r-bettinger","name":"Douglas R Bettinger","title":"Chief Financial Officer & EVP","short_title":"CFO"},"company":"LAM RESEARCH CORP","ticker":"LRCX","tx_kind":"open_market_sale","tx_date":"2026-03-04","shares":50057,"price":224.03,"value":11214269.71,"is_10b5_1":false}
- Days between
- 8
- Opposite side
- Yes