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SEC Form 4 research

LAM RESEARCH CORP insider transactions

Inspect LAM RESEARCH CORP's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0000707549
Reporting owners
54
Officers and directors
33
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-102026-09-09ARCHER TIMOTHYS30,000$319.26Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-09 and its public availability date is 2026-09-10. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 7 rows, 7 columns

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2026-09-102026-09-09ARCHER TIMOTHYS30,000$319.26Not reported
2026-09-102026-09-09Mayer BethanyS9,557$314.74Not reported
2026-09-042026-09-02Varadarajan SeshasayeeS27,480$291.32Not reported
2026-09-042026-09-02Varadarajan SeshasayeeS12,270$291.32Not reported
2026-09-042026-09-02Varadarajan SeshasayeeS20,000$291.32Not reported
2026-09-022026-08-31Harter AvaS5,000$302.46Not reported
2026-08-082026-08-06ARCHER TIMOTHYS30,000$300Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 39 displayed rows: Officers and directors in the directory

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LORD PATRICK J000134353170
O'Dowd Sarah A000144714919
Correia Christina00019666265
Vahedi Vahid00017078269
Varadarajan Seshasayee000170782714
Heckart Christine000151857827
NEWBERRY STEPHEN G000122511135
TALWALKAR ABHIJIT Y000131606543
Lego Catherine P000129157062
Hahn Ava000126737623
MADDOCK ERNEST E000122705019
Ahmed Sohail U00017790371
Anstice Martin B000129333238
ARCHER TIMOTHY0001343600145
ARSCOTT DAVID G00012283855
BAGLEY JAMES W000101631736
BERDAHL ROBERT M000122689815
Bettinger Douglas R000146946960
Bondur Thomas J00013924256
BRANDT ERIC0001190639102
BRIGHT NICOLAS J000122689315
CANNON MICHAEL R000120148925
EL MANSY YOUSSEF A00012868615
ELKUS RICHARD J JR00009239608
Fernandes Neil J00019665985
Gottscho Richard A000139242443
Hariri Abdi00013083373
HARRIS JACK RAYMOND00009051687
Harter Ava00016424157
INMAN GRANT M000118154518
JENNINGS KEVIN000118573010
Marks Jeffrey00014767533
Mayer Bethany000140569328
Meikle Scott Gerald000171545610
Saraswat Krishna00015129633
Schisler George M00020079301
Srinivasan Mukund00015004912
VARON LESLIE F000120740313
Watanabe Seiichi00013192246

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.