LRCX insider ownership: who sold, why, and what they still hold

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Timothy Archer President and CEO	30,000	$319.26	2.6%	1.13M	Sep 9, 2026	Sep 10, 2026

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Bethany Mayer Director	9,557	$314.74	30%	23K	Sep 9, 2026	Sep 10, 2026

What stands out

Four insiders sold more than 25% of vested holdings: Eric Brandt (50% of holdings, $47.0M, 83% under a disclosed plan), Seshasayee Varadarajan (30% of holdings, $17.4M, all under a disclosed plan) and Ava Harter (43% of holdings, $5.7M, 26% under a disclosed plan), plus 1 more.Eric Brandt: largest sale, Feb 6, 2026 · Seshasayee Varadarajan: largest sale, Sep 2, 2026 · Ava Harter: largest sale, Apr 27, 2026

Douglas Bettinger (13% of holdings) sold $26.5M of stock with no disclosed trading plan. The filings don't state a reason.Largest such sale, Mar 4, 2026

Two officers sold shares but ended with larger stakes, because more shares came in than were sold: Timothy Archer (sold 253K, 24% of starting holdings; 527K added) and Douglas Bettinger (sold 130K, 13% of starting holdings; 234K added).Timothy Archer: largest sale, Dec 17, 2025 · Douglas Bettinger: largest sale, Mar 4, 2026

Percentages cover 19 of 20 officers and directors. Left out: Neil Fernandes (holdings couldn't be fully reconciled). Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Each bar is the insider's vested stake at the start of the period (Oct 8, 2025). The gold part is what they sold.

SoldRest of starting stakeAdded during the period

Timothy Archer

President and CEO

Sold 24%, but 475K shares were added (mostly vesting), so the stake grew

24% · $57.0MDisclosed plan

Eric Brandt

Director

50% · $47.0M83% planned

Douglas Bettinger

Chief Financial Officer & EVP

Sold 13%, but 221K shares were added (mostly vesting), so the stake grew

13% · $26.5MNo plan disclosed

Seshasayee Varadarajan

Senior Vice President

Sold 30%, but 94K shares were added (mostly vesting), so the stake grew

30% · $17.4MDisclosed plan

Vahid Vahedi

Senior Vice President

17% · $7.2MDisclosed plan

All 9 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesNo plan disclosed

Common questions

Is the Lam Research CEO selling stock?

Yes. Timothy Archer sold 253K shares ($57.0M, 24% of starting holdings) in the past 12 months, all of it under a trading plan disclosed in the filings.

Why are Lam Research insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 77% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 23% had no disclosed plan. A trading plan schedules sales in advance.

Are any Lam Research insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

How much of their stake did Lam Research insiders sell?

About 20% overall. As a group they still hold 99.6% of their starting shares. That covers the 12 months to Oct 8, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold9 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Timothy Archer President and CEO	$57.0M 253K shares	24%	Disclosed plan
Eric Brandt Director	$47.0M 144K shares	50%	83% under a disclosed plan
Douglas Bettinger Chief Financial Officer & EVP	$26.5M 130K shares	13%	No plan disclosed
Seshasayee Varadarajan Senior Vice President	$17.4M 60K shares	30%	Disclosed plan
Vahid Vahedi Senior Vice President	$7.2M 52K shares	17%	Disclosed plan
Neil Fernandes Senior Vice President	$7.0M 26K shares	i No percentage: holdings couldn't be fully reconciled.	Disclosed plan
Abhijit Talwalkar Director	$6.1M 18K shares	17%	Disclosed plan
Ava Harter Chief Legal Officer	$5.7M 26K shares	43%	26% under a disclosed plan
Bethany Mayer Director	$3.2M 11K shares	34%	7% under a disclosed plan

The full ownership picture19 of 20 insiders fully reconciled · 20 officers and directors

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 8, 2025

Sold

Held Oct 8, 2026

Still held

Timothy Archer

Minor difference of 681 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

President and CEO

1.04M

−253K

1.13M

+9.1%

Vesting, gifts, unvested awards and holding lines for Timothy Archer

+475Kshares vested or exercised

−7.1Kgifted (net of own trusts)

−172Kwithheld by the company for taxes

506K → 402Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	982,075	1,075,966
401(k)	Common Stock	48,026	48,026
Spouse 401(k) includes unvested RSUs, amount not disclosed	Common Stock	5,670	5,670

Additional holdings last reported Apr 25, 2013, not confirmed since: 5,000 shares. Not included in any total or percentage on this page.

Spouse, Common Stock: 5,000 shares, last reported Apr 25, 2013

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
151,980	$54.06	Mar 1, 2029	$40.3M
181,020	$49.09	Mar 1, 2030	$48.9M
147,240	$98.15	Mar 1, 2031	$32.6M
59,970	$59.88	Mar 1, 2028	$15.6M
31,400	$30.03	Mar 2, 2027	$9.1M
147,240	$98.15	Mar 1, 2031	$32.6M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 681 shares. Difference is under 0.5% of holdings.

Douglas Bettinger

Minor difference of 334 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed.

Chief Financial Officer & EVP

1.03M

−130K

1.08M

+5.3%

Vesting, gifts, unvested awards and holding lines for Douglas Bettinger

+221Kshares vested or exercised

0gifted (net of own trusts)

−49Kwithheld by the company for taxes

141K → 109Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	1,026,983	1,081,705

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
39,720	$98.12	Mar 1, 2031	$8.8M
13,240	$98.15	Mar 1, 2031	$2.9M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 334 shares. Difference is under 0.5% of holdings.

Vahid Vahedi

Minor difference of 334 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed.

Senior Vice President

303K

−52K

277K

91%

Vesting, gifts, unvested awards and holding lines for Vahid Vahedi

+50Kshares vested or exercised

0gifted (net of own trusts)

−33Kwithheld by the company for taxes

80K → 57Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	302,903	276,896

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
20,880	$54.06	Mar 1, 2029	$5.5M
27,150	$49.09	Mar 1, 2030	$7.3M
17,460	$98.15	Mar 1, 2031	$3.9M
12,270	$59.88	Mar 1, 2028	$3.2M
17,460	$98.15	Mar 1, 2031	$3.9M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 334 shares. Difference is under 0.5% of holdings.

Eric Brandt

Includes unvested RSUs, amount not disclosed.

Director

287K

−144K

145K

50%

Vesting, gifts, unvested awards and holding lines for Eric Brandt

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	287,070	144,705

Seshasayee Varadarajan

Minor difference of 682 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed.

Senior Vice President

198K

−60K

208K

+5.2%

Vesting, gifts, unvested awards and holding lines for Seshasayee Varadarajan

+94Kshares vested or exercised

0gifted (net of own trusts)

−37Kwithheld by the company for taxes

103K → 86Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	195,305	205,546
401(k)	Common Stock	2,367	2,367

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
20,880	$54.06	Mar 1, 2029	$5.5M
29,400	$49.09	Mar 1, 2030	$7.9M
23,880	$98.15	Mar 1, 2031	$5.3M
23,880	$98.15	Mar 1, 2031	$5.3M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 682 shares. Difference is under 0.5% of holdings.

Michael Cannon

Includes unvested RSUs, amount not disclosed.

Director

190K

191K

no sales

Vesting, gifts, unvested awards and holding lines for Michael Cannon

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	189,740	191,375

Abhijit Talwalkar

Includes unvested RSUs, amount not disclosed.

Director

108K

−18K

87K

80%

Vesting, gifts, unvested awards and holding lines for Abhijit Talwalkar

0shares vested or exercised

−4.6Kgifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	108,360	87,142

Karthikeyan Rammohan

Includes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3.

SVP, Global Ops & Ent Solns

99K

no sales

Vesting, gifts, unvested awards and holding lines for Karthikeyan Rammohan

0shares vested or exercised

0gifted (net of own trusts)

20K → 20Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Started reporting during the period; starting holdings are from the Form 3.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	16,600	16,600
Trust	Common Stock	79,856	79,856
401K	Common Stock	2,578	2,578

Patrick Lord

Minor difference of 334 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed.

Executive Vice President

75K

99K

no sales

Vesting, gifts, unvested awards and holding lines for Patrick Lord

+63Kshares vested or exercised

0gifted (net of own trusts)

−40Kwithheld by the company for taxes

115K → 72Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	75,124	98,848

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
10,130	$54.06	Mar 1, 2029	$2.7M
28,140	$49.09	Mar 1, 2030	$7.6M
31,830	$98.15	Mar 1, 2031	$7.0M
31,830	$98.15	Mar 1, 2031	$7.0M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 334 shares. Difference is under 0.5% of holdings.

Neil Fernandes

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +348 shares on May 1, 2026 (Direct). See the filing Sales and other transactions for Neil Fernandes are complete.

Senior Vice President

n/a

−26K

n/a

Vesting, gifts, unvested awards and holding lines for Neil Fernandes

+22Kshares vested or exercised

0gifted (net of own trusts)

−17Kwithheld by the company for taxes

59K → 55Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +348 shares on May 1, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	70,864	58,470
401(k)	Common Stock	1,015	1,015

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
11,760	$49.09	Mar 1, 2030	$3.2M
16,410	$98.15	Mar 1, 2031	$3.6M
16,410	$98.15	Mar 1, 2031	$3.6M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Ava Harter

Minor difference of 47 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed.

Chief Legal Officer

60K

−26K

42K

71%

Vesting, gifts, unvested awards and holding lines for Ava Harter

+12Kshares vested or exercised

0gifted (net of own trusts)

−11Kwithheld by the company for taxes

46K → 54Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	59,786	42,462

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
6,010	$77.04	Aug 5, 2031	$1.5M

Estimate: options held × ($319.26 − strike price), using the most recent insider trade price on Form 4 (Sep 9, 2026), not a market close.

Reconciliation: minor difference of 47 shares. Difference is under 0.5% of holdings.

Christina Correia

Minor difference of 340 shares. Small increase from dividend reinvestment. Includes unvested RSUs, amount not disclosed. Small increase from dividend reinvestment.

CVP , Chief Accounting Officer

51K

57K

no sales

Vesting, gifts, unvested awards and holding lines for Christina Correia

+9Kshares vested or exercised

0gifted (net of own trusts)

−20Kwithheld by the company for taxes

15K → 11Kunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Small increase from dividend reinvestment. Filing

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	51,252	57,168

Reconciliation: minor difference of 340 shares. Small increase from dividend reinvestment.

Sohail Ahmed

Includes unvested RSUs, amount not disclosed.

Director

34K

35K

no sales

Vesting, gifts, unvested awards and holding lines for Sohail Ahmed

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	2,950	1,635
trust	Common Stock	30,630	33,580

Bethany Mayer

Includes unvested RSUs, amount not disclosed.

Director

32K

−11K

23K

71%

Vesting, gifts, unvested awards and holding lines for Bethany Mayer

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	2,950	1,635
Trust	Common Stock	28,930	20,995

Jyoti Mehra

Includes unvested RSUs, amount not disclosed.

Director

17K

18K

no sales

Vesting, gifts, unvested awards and holding lines for Jyoti Mehra

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	16,840	18,475

Ho Kang

Includes unvested RSUs, amount not disclosed.

Director

8.7K

9.7K

no sales

Vesting, gifts, unvested awards and holding lines for Ho Kang

0shares vested or exercised

0gifted (net of own trusts)

−664withheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	8,693	9,664

John Dineen

Includes unvested RSUs, amount not disclosed.

Director

7.5K

9.1K

no sales

Vesting, gifts, unvested awards and holding lines for John Dineen

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	7,500	9,135

Mark Fields

Includes unvested RSUs, amount not disclosed.

Director

4.2K

5.9K

no sales

Vesting, gifts, unvested awards and holding lines for Mark Fields

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	3,687	5,322
Trust	Common Stock	560	560

Ita Brennan

Includes unvested RSUs, amount not disclosed.

Director

3.7K

5.3K

no sales

Vesting, gifts, unvested awards and holding lines for Ita Brennan

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	3,707	5,342

Anirudh Devgan

Includes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3.

Director

312

1.5K

no sales

Vesting, gifts, unvested awards and holding lines for Anirudh Devgan

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Started reporting during the period; starting holdings are from the Form 3.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	0	1,141
Trust	Common Stock	312	312

19 of 20 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (12 exactly, 7 with a minor or footnoted difference). For 1 we show sales but not holdings; the ! icon on that row explains why. Percentages cover 19 of 20 officers and directors. Left out: Neil Fernandes (holdings couldn't be fully reconciled). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$177M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $177M across 720,222 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Disclosed plan · $136M · 77%

23%

The lighter segment is sales with no plan disclosed in the filing ($41.7M), including tax-related sales outside a plan.

No plan disclosed · $41.7M

Sales with no 10b5-1 plan and no tax reference in the filing. $26.5M of it is Douglas Bettinger. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Douglas Bettinger, Mar 4, 2026

Taxes

379,169 shares ($89.1M) were withheld by the company for taxes, which isn't a market sale.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Timothy Archer President and CEO	253K	$57.0M	100%	32%	Dec 17, 2025 to Sep 9, 2026
Eric Brandt Director	144K	$47.0M	83%	27%	Feb 6, 2026 to Jun 12, 2026
Douglas Bettinger Chief Financial Officer & EVP	130K	$26.5M	0%	15%	Nov 14, 2025 to Mar 4, 2026
Seshasayee Varadarajan Senior Vice President	60K	$17.4M	100%	10%	Sep 2, 2026 to Sep 2, 2026
Vahid Vahedi Senior Vice President	52K	$7.2M	100%	4%	Oct 13, 2025 to Oct 13, 2025
Neil Fernandes Senior Vice President	26K	$7.0M	100%	4%	May 1, 2026 to Jun 1, 2026
Abhijit Talwalkar Director	18K	$6.1M	100%	3%	Jul 13, 2026 to Jul 13, 2026
Ava Harter Chief Legal Officer	26K	$5.7M	26%	3%	Oct 27, 2025 to Aug 31, 2026
Bethany Mayer Director	11K	$3.2M	7%	2%	Nov 3, 2025 to Sep 9, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$8.7M	$7.2M	$0	$1.4M
Nov 2025	$6.2M	$212K	$0	$6.0M
Dec 2025	$26.8M	$26.8M	$0	$0
Jan 2026	$0	$0	$0	$0
Feb 2026	$7.9M	$0	$0	$7.9M
Mar 2026	$21.8M	$0	$0	$21.8M
Apr 2026	$1.6M	$0	$0	$1.6M
May 2026	$4.6M	$4.6M	$0	$0
Jun 2026	$41.5M	$41.5M	$0	$0
Jul 2026	$17.8M	$17.8M	$0	$0
Aug 2026	$10.5M	$10.5M	$0	$0
Sep 2026	$30.0M	$27.0M	$0	$3.0M
Oct 2026	$0	$0	$0	$0

Is this normal? Selling year by year5 earlier years to compare with

In line with the past 5 years. 9 insiders sold; the average is 6 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 8, 2026 Latest 12 months	720K	9	$177M
Oct 8, 2025 1 year earlier	112K	2	$10.0M
Oct 8, 2024 2 years earlier	950K	8	$85.4M
Oct 9, 2023 3 years earlier	280K	7	$17.7M
Oct 9, 2022 4 years earlier	926K	6	$52.0M
Oct 9, 2021 5 years earlier	1.78M	9	$87.2M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty1 insider whose holdings couldn't be fully reconciled

Neil Fernandes: holdings couldn't be fully reconciled (difference of 682 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +348 shares on May 1, 2026 (Direct). Filing, May 1, 2026

Footnote: "This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 17, 2025. | The amount reported includes shares subject to unvested restricted stock units."

Timothy Archer: minor difference of 681 shares. Difference is under 0.5% of holdings.

Douglas Bettinger: minor difference of 334 shares. Difference is under 0.5% of holdings.

Vahid Vahedi: minor difference of 334 shares. Difference is under 0.5% of holdings.

Seshasayee Varadarajan: minor difference of 682 shares. Difference is under 0.5% of holdings.

Patrick Lord: minor difference of 334 shares. Difference is under 0.5% of holdings.

Ava Harter: minor difference of 47 shares. Difference is under 0.5% of holdings.

Christina Correia: minor difference of 340 shares. Small increase from dividend reinvestment.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,156 filings from SEC EDGAR, and how we read them

All 1,156 Forms 3, 4 and 5 filed for Lam Research (SEC CIK 707549) from Jun 2, 2003 to Sep 10, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages.

Probable 10-for-1 stock split on or before Oct 31, 2024 (first filing that shows post-split balances). Splits aren't reported as transactions; 17 holding lines changed by exactly this ratio, so earlier share counts are restated.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (36)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
George Schisler	May 6, 2024	75,398 shares, last reported balance as of May 3, 2024
Ava Hahn	Jan 4, 2024	34,330 shares, last reported balance as of Jan 3, 2024
Lih Tsai	Nov 13, 2023	74,590 shares, last reported balance as of Nov 10, 2023
Leslie Varon	Nov 13, 2023	28,340 shares, last reported balance as of Nov 10, 2023
Richard Gottscho	Mar 2, 2023	303,980 shares, last reported balance as of Mar 1, 2023
Scott Meikle	Mar 2, 2023	231,212 shares, last reported balance as of Mar 1, 2023
Catherine Lego	Apr 27, 2022	499,910 shares, last reported balance as of Apr 26, 2022
Mansy El	Aug 12, 2020	378,020 shares, last reported balance as of Feb 6, 2020
Kevin Jennings	Jul 14, 2020	48,990 shares, last reported balance as of Jul 10, 2020
Sarah O'Dowd	Dec 23, 2019	320,840 shares, last reported balance as of Dec 19, 2019
Christine Heckart	Feb 4, 2019	155,400 shares, last reported balance as of Feb 1, 2019
Stephen Newberry	Nov 13, 2018	98,470 shares, last reported balance as of Nov 9, 2018
Martin Anstice	May 23, 2018	1,292,590 shares, last reported balance as of May 22, 2018
Young Koh	Nov 13, 2017	19,600 shares, last reported balance as of Nov 10, 2017
Krishna Saraswat	Nov 10, 2015	238,960 shares, last reported balance as of Nov 6, 2015
Grant Inman	Nov 12, 2014	876,380 shares, last reported balance as of Nov 7, 2014
William Spivey	Nov 12, 2014	600,160 shares, last reported balance as of Nov 7, 2014
Ernest Maddock	Mar 6, 2013	553,650 shares, last reported balance as of Mar 4, 2013
Delbert Whitaker	Jun 6, 2012	243,200 shares, last reported balance as of Jun 4, 2012
Masayuki Morita	Apr 3, 2012	229,900 shares, last reported balance as of Mar 30, 2012
Robert Berdahl	Feb 7, 2012	115,700 shares, last reported balance as of Feb 3, 2012
Kim Perdikou	Feb 7, 2012	89,100 shares, last reported balance as of Feb 3, 2012
Mukund Srinivasan	Jan 9, 2012	288,640 shares, last reported balance as of Jan 5, 2012
James Bagley	Mar 9, 2011	1,420,000 shares, last reported balance as of Mar 8, 2011
David Arscott	Feb 2, 2011	639,330 shares, last reported balance as of Jan 31, 2011
Thomas Bondur	Dec 16, 2010	353,406 shares, last reported balance as of Dec 14, 2010
Jeffrey Marks	Aug 27, 2010	617,220 shares, last reported balance as of Aug 25, 2010
Richard Elkus Jr.	Mar 15, 2010	593,680 shares, last reported balance as of Mar 11, 2010
Patricia Wolpert	Feb 3, 2010	244,980 shares, last reported balance as of Feb 1, 2010
Jack Harris	Dec 3, 2009	335,780 shares, last reported balance as of Dec 2, 2009
Abdi Hariri	Mar 2, 2009	186,160 shares, last reported balance as of Feb 26, 2009
Seiichi Watanabe	Feb 3, 2009	145,130 shares, last reported balance as of Feb 2, 2009
Stephen Lanza	Oct 8, 2008	120,000 shares, last reported balance as of Sep 29, 2008
Nicolas Bright	May 5, 2006	13,920 shares, last reported balance as of May 3, 2006
Steven Lindsay	Feb 17, 2005	33,980 shares, last reported balance as of Feb 15, 2005
Mercedes Johnson	Nov 13, 2003	140,740 shares, last reported balance as of Nov 12, 2003

Lam Research insiders sold $177M in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Common questions

Is the Lam Research CEO selling stock?

Why are Lam Research insiders selling?

Are any Lam Research insiders buying?

How much of their stake did Lam Research insiders sell?

The evidence

No plan disclosed · $41.7M

Taxes

Sales by month