Company Atlasby Kadoa
Star on GitHub

Lam Research LRCX

Lam Research is the 38th largest S&P 500 company by market cap, worth $287 billion. 11 directors have filed with the SEC in the last 12 months (who counts). 8 officers are on file. At 30 Jun 2026, BlackRock was its largest institutional holder, with 10.6% of the company.

CEO
Timothy Archer
Sector
Information Technology
Sub-industry
Semiconductor Materials & Equipment
Headquarters
Fremont, California
Founded
1980
More
Wikipedia
Market cap
$287B
38th largest, 23 Oct 2026 close
Revenue
$23.2B
Fiscal year 2026
Price to sales
12.4
Market cap over revenue
Employees
23,300
10-K, 4 Aug 2026
Market cap per employee
$12M
Market cap over employees
Connections
9
S&P 500 companies sharing a director or officer

Largest institutional holders

Each fund group's share of Lam Research. Where a company has several share classes, the share is of its total value.

13F filings for the quarter to 30 Jun 2026

These five hold 33.8% of Lam Research.

Source: SEC Form 13F data sets, SEC XBRL shares outstanding 路 All holders

Board and officers

9 people here also hold roles at other S&P 500 companies.

Roles filed up to 30 Sep 2026

NameTitle
Directors (11)
Sohail U. AhmedDirectorLast filed 10 Nov 2025Director
Eric BrandtDirectorAlso at Gen DigitalDirector
Ita M. BrennanDirectorAlso at Cadence Design SystemsLast filed 10 Nov 2025Director
Michael R. CannonDirectorAlso at Seagate TechnologyLast filed 10 Nov 2025Director
Anirudh DevganDirectorAlso at Cadence Design SystemsLast filed 9 Feb 2026Director
John M. DineenDirectorAlso at CognizantLast filed 10 Nov 2025Director
Mark FieldsDirectorAlso at QualcommLast filed 10 Nov 2025Director
Ho Kyu KangDirectorLast filed 10 Nov 2025Director
Bethany MayerDirectorAlso at Hewlett Packard EnterpriseDirector
Jyoti MehraDirectorLast filed 10 Nov 2025Director
Abhijit Y. TalwalkarDirectorAlso at Advanced Micro Devices and TE ConnectivityDirector
Officers (8)
Timothy ArcherPresident and CEOAlso at Johnson ControlsLast filed 10 Sep 2026President and CEO
Douglas R. BettingerChief Financial Officer & EVPLast filed 5 Mar 2026Chief Financial Officer & EVP
Christina CorreiaCVP , Chief Accounting OfficerLast filed 2 Mar 2026CVP , Chief Accounting Officer
Neil J. FernandesSenior Vice PresidentLast filed 2 Jun 2026Senior Vice President
Ava HarterChief Legal OfficerLast filed 1 Sep 2026Chief Legal Officer
Karthikeyan RammohanSVP, Global Ops & Ent SolnsLast filed 10 Mar 2026SVP, Global Ops & Ent Solns
Vahid VahediSenior Vice PresidentLast filed 2 Mar 2026Senior Vice President
Seshasayee VaradarajanSenior Vice PresidentLast filed 3 Sep 2026Senior Vice President

Source: SEC insider filings (Forms 3, 4 and 5), Lam Research's Form 4 filings 路 All directors and officers

Companies that share people with Lam Research

Each person's title here, then at the other company.

Source: SEC insider filings 路 See the whole network

Lam Research's market cap since December 2008

Marked weeks are changes in the share count, such as a merger, not market moves.

Weekly, up to 23 Oct 2026

Show equal percentage changes as equal steps.
201020122014201620182020202220242026$287B

Source: Yahoo Finance closing prices, SEC XBRL shares outstanding

Workforce

Headcount at 4 Aug 2026

Employees
23,300
As of August 4, 2026, we had approximately 23,300 regular full-time employees, of which over 26% were engaged in research and development.
Lam Research Form 10-K

Source: Lam Research Form 10-K

Insider trades

Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.

Trades from 30 Sep 2025 to 30 Sep 2026

Directors and officers sold $177 million of stock in 23 sales and made no open-market purchases in the 12 months to 30 Sep 2026.

DatePersonTitleTypeSharesValue
9 Sep 2026SaleTimothy ArcherPresident and CEOPresident and CEOSale30,000$9.6M
9 Sep 2026SaleBethany MayerDirectorDirectorSale9,557$3.0M
2 Sep 2026SaleSeshasayee VaradarajanSenior Vice PresidentSenior Vice PresidentSale59,750$17M
31 Aug 2026SaleAva HarterChief Legal OfficerChief Legal OfficerSale5,000$1.5M
6 Aug 2026SaleTimothy ArcherPresident and CEOPresident and CEOSale30,000$9.0M
13 Jul 2026SaleAbhijit Y. TalwalkarDirectorDirectorSale18,282$6.1M
2 Jul 2026SaleTimothy ArcherPresident and CEOPresident and CEOSale30,000$12M
12 Jun 2026SaleEric BrandtDirectorDirectorSale54,500$20M
11 Jun 2026SaleEric BrandtDirectorDirectorSale54,500$19M
1 Jun 2026SaleNeil J. FernandesSenior Vice PresidentSenior Vice PresidentSale7,659$2.4M

Showing 10 of 23 trades

Source: SEC insider transactions data sets, Lam Research's Form 4 filings

Trades by members of Congress and officials

Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.

Trades from 20 Oct 2023 to 20 Oct 2026

27 people disclosed 31 purchases and 46 sales of Lam Research stock since October 2023.

DateMember or officialTypeAmount
13 Aug 2026Sheldon Whitehouse (Senate, D-RI)Senate, D-RI 路 SoldSale$1,001 to $15,000$1K to $15K
3 Aug 2026Rohit Khanna (House, D-CA)House, D-CA 路 SoldSale$1,001 to $15,000$1K to $15K
10 Jun 2026Markwayne Mullin (Secretary)Secretary 路 SoldSale$250,001 to $500,000$250K to $500K
5 Jun 2026David J. Taylor (House, R-OH)House, R-OH 路 SoldSale$1,001 to $15,000$1K to $15K
28 Apr 2026Donald J Trump (President)President 路 SoldSale$1,001 to $15,000$1K to $15K
27 Apr 2026David J. Taylor (House, R-OH)House, R-OH 路 SoldSale$1,001 to $15,000$1K to $15K
15 Apr 2026Donald J Trump (President)President 路 BoughtPurchase$15,001 to $50,000$15K to $50K
9 Apr 2026Donald J Trump (President)President 路 SoldSale$250,001 to $500,000$250K to $500K
30 Mar 2026Alan Armstrong (Senate, R-OK)Senate, R-OK 路 BoughtPurchase$1,001 to $15,000$1K to $15K
27 Mar 2026Alan Armstrong (Senate, R-OK)Senate, R-OK 路 BoughtPurchase$1,001 to $15,000$1K to $15K

Showing 10 of 77 trades

Source: House, Senate and OGE disclosures via the Congress trading monitor

Not on file: no WARN layoff notices under its own name since October 2023.