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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Sep 9, 2026Reported sale · Form 4TIMOTHY ARCHER, President and CEO · $9.6MOpen the filing ↗
- Sep 9, 2026Reported sale · Form 4Bethany Mayer · $3.0MOpen the filing ↗
- Sep 9, 2026Notice of sale · Form 144BETHANY MAYER · Director · $3.0MOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,8768 flagged findings
Reported transactions (Form 4)80since Feb 4, 2025 · and 17 other holdings
Corporate events (8-K)30since Mar 4, 2019
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
Lam Research Corporation is an American supplier of wafer-fabrication equipment and related services to the semiconductor industry. Its products are used primarily in front-end wafer processing, which involves the steps that create the active components of semiconductor devices and their wiring (interconnects). The company also builds equipment for back-end wafer-level packaging (WLP) and for related manufacturing markets such as for microelectromechanical systems (MEMS).
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-04-23export control restrictionsrecentOpen filing ↗“…the U.S. and China,” the U.S. government has in recent years imposed new controls, including expanded export license…”
+1 more passage from the same document
- “…with China. In addition, the U.S. government has an ongoing process of assessing technologies that may be subject to new or…”
- 2026-04-23capital return (buybacks/dividends)recentOpen filing ↗“…Inflation Reduction Act. Excise tax incurred reduces the amount available under the repurchase program, as applicable, and is…”
+1 more passage from the same document
- “…as applicable, and is included in the cost of shares repurchased in the Condensed Consolidated Statement of Stockholders’…”
- 2026-01-29export control restrictionsrecentOpen filing ↗“…affect our business with China, Japan, Korea, and/or Taiwan and perhaps the entire Asia Pacific region or global economy. A…”
+1 more passage from the same document
- “…the U.S. and China,” the U.S. government has in recent years imposed new controls, including expanded export license…”
- 2026-01-29capital return (buybacks/dividends)recentOpen filing ↗“…paid per share excludes the effect of accelerated share repurchase activities. See additional disclosure below regarding the…”
+1 more passage from the same document
- “…repurchases are subject to a 1% excise tax under the Inflation Reduction Act. Excise tax incurred reduces the amount available…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 1,876)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Sep 24, 26DEFA14A ↗Shareholder meeting and votes
- Sep 24, 26DEF 14A ↗Shareholder meeting and votes
Notice of proposed sale · 2 Form 144 filingsshow all 2hide
- Sep 9, 26Form 144 ↗Notice of proposed sale
- Sep 9, 26Form 144 ↗Notice of proposed sale
- Sep 3, 26Form 4 ↗Insider transaction
- Sep 2, 26Form 144 ↗Notice of proposed sale
- Sep 1, 26Form 4 ↗Insider transaction
- Aug 31, 26Form 144 ↗Notice of proposed sale
- Aug 27, 268-K ↗Current report · A senior executive left or was appointed
- Aug 7, 26Form 4 ↗Insider transaction
- Aug 7, 2610-K ↗Annual report
- Aug 6, 26Form 144 ↗Notice of proposed sale
- Aug 6, 26Form 4 ↗Insider transaction
- Jul 29, 268-K ↗Current report · Results
- Jul 14, 26Form 4 ↗Insider transaction
- Jul 13, 26Form 144 ↗Notice of proposed sale
- Jul 6, 26Form 4 ↗Insider transaction
- Jul 2, 26Form 144 ↗Notice of proposed sale
Notice of proposed sale · 2 Form 144 filingsshow all 2hide
- Jun 12, 26Form 144 ↗Notice of proposed sale
- Jun 11, 26Form 144 ↗Notice of proposed sale
- Jun 2, 26Form 4 ↗Insider transaction
1,876 filings on record, the oldest from May 6, 94.
Listing the 25 most recent filings of the 1,876 on record.
116577
4 senior executive changes2025 – 2026show all 4hide
- Aug 27, 26A senior executive left or was appointed8-K 5.02 ↗
- Feb 4, 26A senior executive left or was appointed+1 more in the same filing8-K/A 5.02 ↗
- Feb 3, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Nov 6, 25A senior executive left or was appointed+4 more in the same filing8-K 5.02 ↗
- Sep 11, 25Auditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
- Jan 29, 25Took on a new financial obligation+2 more in the same filing8-K 2.03 ↗
5 senior executive changes2023 – 2024show all 5hide
- Sep 18, 24A senior executive left or was appointed8-K 5.02 ↗
- Aug 30, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Aug 24, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 21, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 9, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jan 25, 23Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
3 senior executive changes2021 – 2022show all 3hide
- Sep 19, 22A senior executive left or was appointed8-K 5.02 ↗
- May 11, 22A senior executive left or was appointed+3 more in the same filing8-K 5.02 ↗
- Nov 16, 21A senior executive left or was appointed8-K 5.02 ↗
- Jun 21, 21Took on a new financial obligation+2 more in the same filing8-K 2.03 ↗
3 senior executive changes2020show all 3hide
- Dec 28, 20A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Sep 14, 20A senior executive left or was appointed8-K 5.02 ↗
- Sep 8, 20A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 5, 20Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Mar 17, 20Took on a new financial obligation8-K 2.03 ↗
4 senior executive changes2019show all 4hide
- Aug 26, 19A senior executive left or was appointed8-K 5.02 ↗
- Aug 14, 19A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 3, 19A senior executive left or was appointed8-K 5.02 ↗
- May 13, 19A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 4, 19Took on a new financial obligation+3 more in the same filing8-K 2.03 ↗
The record reaches back to Nov 9, 04.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Oct 6, 16A debt obligation was accelerated+4 more in the same filing8-K 2.04 ↗
- Jul 22, 09Restructuring plan with committed costs8-K/A 2.05 ↗
- Mar 19, 09Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Dec 19, 08Restructuring plan with committed costs8-K/A 2.05 ↗
- Nov 20, 08Restructuring plan with committed costs8-K 2.05 ↗
- Feb 8, 08Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
- Dec 24, 07Past accounts declared unreliable and being restated+1 more in the same filing8-K 4.02 ↗
- Nov 13, 07Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
- Aug 29, 07Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
The full record holds 11 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- The Vanguard Group10.1%Mar 31, 25SCHEDULE 13G/A ↗1 earlier filing
- Vanguard Capital Management7.5%Mar 31, 26SCHEDULE 13G ↗
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Sale intention announced
On Sep 9, BETHANY MAYER filed notice of intent to sell up to $3.0M.
A notice is not a sale: it may not go ahead, may happen in part, or at a different price.
After the notice, they sold $3.0M on Sep 9, per their Form 4. That is 100% of the shares announced so far, and the window is still open.
View notice (Form 144) ↗+6 more recent notices · 6 with a later sale
- Sep 9, 26Sell$9.6MTIMOTHY ARCHERPresident and CEO↗
- Sep 9, 26Sell$3.0MBethany Mayer↗
- Sep 2, 26Sell$5.8MSeshasayee VaradarajanSenior Vice President↗
- Sep 2, 26Sell$3.6MSeshasayee VaradarajanSenior Vice President↗
- Sep 2, 26Sell$8.0MSeshasayee VaradarajanSenior Vice President↗
- Aug 31, 26Sell$1.5MAva HarterChief Legal Officer↗
- Aug 6, 26Sell$9.0MTIMOTHY ARCHERPresident and CEO↗
- Jul 13, 26Sell$6.1MABHIJIT Y TALWALKAR↗
- Jul 2, 26Sell$11.7MTIMOTHY ARCHERPresident and CEO↗
- Jun 12, 26Sell$107KERIC BRANDT↗
- Jun 12, 26Sell$498KERIC BRANDT↗
- Jun 12, 26Sell$394KERIC BRANDT↗
There are 22 more transactions in this stretch.
Stock compensation, tax and giftsshow the 6 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Sep 9, 26Compensation$901KTIMOTHY ARCHERPresident and CEO↗
- Sep 2, 26Compensation$735KSeshasayee VaradarajanSenior Vice President↗
- Sep 2, 26Compensation$825KSeshasayee VaradarajanSenior Vice President↗
- Aug 6, 26Compensation$901KTIMOTHY ARCHERPresident and CEO↗
- Aug 5, 26Tax$1.8MAva HarterChief Legal Officer↗
- Jul 2, 26Compensation$901KTIMOTHY ARCHERPresident and CEO↗
The full record holds 463 transactions and goes back to Jan 3, 23.
Its sector and its market
Lam Research Corporation among Information Technology companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
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Coverage
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- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
- Series quality
- 250 clean closes in the period.
- SEC records
- 1,876 documents on file, from May 6, 1994 to Sep 24, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
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Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
Why does a European company show no SEC records?
It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.
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