Timothy ArcherFiled
President and CEOExecutiveCIK 1343600
Net · 12 months
-$64.2M
Open-market buys − sales
Sold · 12 months
$64.2M
$16.7M in 90d · 51 sales on record
Bought · 12 months
$0
$0 in 90d · 0 buys on record
Under 10b5-1
100%
Share of sale value under a trading plan
Last trade
Oct 23, 2026
Filed Oct 26, 2026 · 96 rows
Monthly open-market value · 24 months Filed
- Bought (open market)
- Sold (open market)
Unusual activity Estimated
Whale score 95Whale watch
- 65Insider overlapPublic Oct 29, 2026 · traded Oct 15, 2026
Rep. David J. Taylor bought LRCX 8 days before its CEO sold $7.1M
Details
- Politician
- David J. Taylor
- Ticker
- LRCX
- Asset
- Lam Research Corporation - Common Stock (LRCX)
- Tx type
- buy
- Traded
- Oct 15, 2026
- Filed
- Oct 29, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 14
- Owner type
- self
- 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":"2026-10-23","shares":31400,"price":227.02,"value":7128428,"is_10b5_1":true,"filing_date":"2026-10-26"}
- Days between
- -8
- Opposite side
- Yes
- Public from
- Oct 29, 2026
- Method version
- 2026-11-03
- 27Exec salePublic Oct 26, 2026 · traded Oct 23, 2026
LRCX CEO Timothy Archer sold $7.1M (10b5-1 plan)
Details
- Insider
- Timothy Archer
- Company
- LAM RESEARCH CORP
- Ticker
- LRCX
- Tx kind
- open_market_sale
- Traded
- Oct 23, 2026
- Shares
- 31,400
- Price
- $227
- Value
- $7.1M
- Is 10b5 1
- Yes
- Filed
- Oct 26, 2026
- Public from
- Oct 26, 2026
- Method version
- 2026-11-03
- 29Exec salePublic Sep 10, 2026 · traded Sep 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
- Traded
- Sep 9, 2026
- Shares
- 30,000
- Price
- $319
- Value
- $9.6M
- Is 10b5 1
- Yes
- Filed
- Sep 10, 2026
- Public from
- Sep 10, 2026
- Method version
- 2026-11-03
- 50Insider overlapPublic Sep 4, 2026 · traded Aug 3, 2026
Rep. Ro Khanna's spouse sold LRCX 3 days before its CEO sold $9M
Details
- Politician
- Ro Khanna
- Ticker
- LRCX
- Asset
- LAMRESEARCHCORPORATIONCMN
- Tx type
- sell
- Traded
- Aug 3, 2026
- Filed
- Sep 4, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 32
- Owner type
- spouse
- 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,"filing_date":"2026-08-07"}
- Days between
- -3
- Opposite side
- No
- Public from
- Sep 4, 2026
- Method version
- 2026-11-03
- 50Insider overlapPublic Sep 2, 2026 · traded Aug 13, 2026
Sen. Sheldon Whitehouse's spouse 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
- Traded
- Aug 13, 2026
- Filed
- Sep 2, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 20
- Owner type
- spouse
- 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,"filing_date":"2026-08-07"}
- Days between
- 7
- Opposite side
- No
- Public from
- Sep 2, 2026
- Method version
- 2026-11-03
- 29Exec salePublic Aug 7, 2026 · traded Aug 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
- Traded
- Aug 6, 2026
- Shares
- 30,000
- Price
- $300
- Value
- $9M
- Is 10b5 1
- Yes
- Filed
- Aug 7, 2026
- Public from
- Aug 7, 2026
- Method version
- 2026-11-03
- 65Insider overlapPublic Jul 6, 2026 · traded Jun 30, 2026
Rep. Ro Khanna's spouse bought LRCX 2 days before its CEO sold $11.7M
Details
- Politician
- Ro Khanna
- Ticker
- LRCX
- Asset
- LAM RESEARCH CORPORATION CMN
- Tx type
- buy
- Traded
- Jun 30, 2026
- Filed
- Jul 6, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 6
- Owner type
- spouse
- 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,"filing_date":"2026-07-06"}
- Days between
- -2
- Opposite side
- Yes
- Public from
- Jul 6, 2026
- Method version
- 2026-11-03
- 50Insider overlapPublic Jul 6, 2026 · traded Jun 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
- Traded
- Jun 5, 2026
- Filed
- Jun 12, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 7
- Owner type
- self
- 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,"filing_date":"2026-07-06"}
- Days between
- -27
- Opposite side
- No
- Public from
- Jul 6, 2026
- Method version
- 2026-11-03
- 31Exec salePublic Jul 6, 2026 · traded Jul 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
- Traded
- Jul 2, 2026
- Shares
- 30,000
- Price
- $390
- Value
- $11.7M
- Is 10b5 1
- Yes
- Filed
- Jul 6, 2026
- Public from
- Jul 6, 2026
- Method version
- 2026-11-03
- 50Insider overlapPublic Feb 15, 2026 · traded Jan 8, 2026
Sen. John Boozman (joint account) partially sold LRCX 22 days after its CEO sold $18.6M
Details
- Politician
- John Boozman
- Ticker
- LRCX
- Asset
- Lam Research Corp
- Tx type
- partial_sale
- Traded
- Jan 8, 2026
- Filed
- Feb 15, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Range midpoint (estimate)
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 38
- Owner type
- joint
- 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":"2025-12-17","shares":113300,"price":163.86,"value":18565338,"is_10b5_1":true,"filing_date":"2025-12-18"}
- Days between
- 22
- Opposite side
- No
- Public from
- Feb 15, 2026
- Method version
- 2026-11-03
Transactions
Independent third-party platform; not affiliated with or endorsed by any member of Congress. Data sourced from publicly available filings and records. Portfolio, holdings, returns, and allocations are estimates and may differ from actual values. Informational and educational only; not investment advice. Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4; the whale score is a model ranking of that filed activity.