Company · Ownership research

LAM RESEARCH CORP LRCX

CIK 0000707549

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 63 rows; the complete set is available through the API.

Insider filings on file run through Nov 3, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $280.13M

Nov 1, 2023 – Nov 3, 2026
Available records · partial months are marked ·

202610 of 19 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 2, 2026	Mayer Bethany Director	Sale10b5-1 footnote	$174.42K 719 shares sold	43.98% sold Direct holding	▾
Oct 23, 2026	ARCHER TIMOTHY President and CEO	Sale10b5-1 footnote	$7.13M 31,400 shares sold	2.84% sold Direct holding	▾
Sep 9, 2026	Mayer Bethany Director	Sale	$3.01M 9,557 shares sold	31.28% sold Trust holding	▾
Sep 9, 2026	ARCHER TIMOTHY President and CEO	Sale10b5-1 footnote	$9.58M 30,000 shares sold	2.71% sold Direct holding	▾
Sep 2, 2026	Varadarajan Seshasayee Senior Vice President	Sale10b5-1 footnote	$17.41M 59,750 shares sold	Unavailable Direct holding	▾
Aug 31, 2026	Harter Ava Chief Legal Officer	Sale10b5-1 footnote	$1.51M 5,000 shares sold	10.53% sold Direct holding	▾
Aug 6, 2026	ARCHER TIMOTHY President and CEO	Sale10b5-1 footnote	$9.00M 30,000 shares sold	2.71% sold Direct holding	▾
Jul 13, 2026	TALWALKAR ABHIJIT Y Director	Sale10b5-1 footnote	$6.12M 18,282 shares sold	17.34% sold Direct holding	▾
Jul 2, 2026	ARCHER TIMOTHY President and CEO	Sale10b5-1 footnote	$11.70M 30,000 shares sold	2.71% sold Direct holding	▾
Jun 12, 2026	BRANDT ERIC Director	Sale10b5-1 footnote	$20.01M 54,500 shares sold	27.36% sold Direct holding	▾

Showing 19 / 19 record groups in 2026. The complete set is available through the API.

LAM RESEARCH CORP · LRCX

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 19 of 19 purchase / sale groups and 30 of 63 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"LRCX","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.