Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of LAM RESEARCH CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000707549.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- LRCX on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0000707549
- Issuer location
- Fremont, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of LAM RESEARCH CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.5%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.5%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
Eric Brandt
0.02%
Michael R. Cannon
0.02%
Abhijit Y. Talwalkar
0.01%
Karthikeyan Rammohan
0.01%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$19,993,297,102
93,575,293 shares
|
$0 | 31 Mar 2026 |
| Eric Brandt |
3/4/5
Director
|
0.02%
|
$58,352,150
253,705 shares
|
-$7,896,150 | 06 Feb 2026 |
| Michael R. Cannon |
3/4/5
Director
|
0.02%
|
$25,625,112
191,375 shares
|
— | 07 Nov 2025 |
| Abhijit Y. Talwalkar |
3/4/5
Director
|
0.01%
|
$23,890,132
105,424 shares
|
— | 10 Mar 2026 |
| Karthikeyan Rammohan |
3/4/5
SVP, Global Ops & Ent Solns
|
0.01%
|
$22,442,101
99,034 shares
|
— | 06 Mar 2026 |
| Patrick J. Lord |
3/4/5
Executive Vice President
|
0.01%
|
$26,232,516
98,848 shares
mixed-class rows
|
— | 27 Feb 2026 |
| Sohail U. Ahmed |
3/4/5
Director
|
0%
|
$4,715,288
35,215 shares
|
— | 06 Nov 2025 |
| Bethany J. Mayer |
3/4/5
Director
|
0%
|
$4,309,838
32,187 shares
|
-$212,453 | 07 Nov 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$79,895,423.
Buys
$0
Insiders: 0
Sells
$79,895,423
Insiders: 7
Net
-$79,895,423
Shares: -428,633
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 428,633
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 83,396 | $0 | $20,109,927 | -$20,109,927 |
| 3-6 | 0 | 242,629 | $0 | $44,869,030 | -$44,869,030 |
| 6-9 | 0 | 102,608 | $0 | $14,916,466 | -$14,916,466 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 27 reporting-owner rows connected to LAM RESEARCH CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
27
Largest Forms 3/4/5 holder
Timothy Archer
Net 12M change
-$79,895,423
Latest report
01 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Timothy Archer | President and CEO | $281,144,991 | -$26,758,338 | -8.7% | Mixed | 27 Feb 2026 |
| Douglas R. Bettinger | Chief Financial Officer & EVP | $246,183,112 | -$26,534,860 | -9.7% | Mixed | 04 Mar 2026 |
| Vahid Vahedi | Senior Vice President | $66,682,856 | -$7,249,191 | -9.8% | Mixed | 27 Feb 2026 |
| Eric Brandt | Director | $58,352,150 | -$7,896,150 | -12% | Filing P/S | 06 Feb 2026 |
| Seshasayee Varadarajan | Senior Vice President | $56,190,352 | Mixed | 27 Feb 2026 | ||
| Catherine P. Lego | Director | $36,593,412 | Mixed | 26 Apr 2022 | ||
| Patrick J. Lord | Executive Vice President | $26,232,516 | Mixed | 27 Feb 2026 | ||
| Michael R. Cannon | Director | $25,625,112 | Mixed | 07 Nov 2025 | ||
| Abhijit Y. Talwalkar | Director | $23,890,132 | Mixed | 10 Mar 2026 | ||
| Karthikeyan Rammohan | SVP, Global Ops & Ent Solns | $22,442,101 | Mixed | 06 Mar 2026 | ||
| Richard A. Gottscho | Executive Vice President & CTO | $22,251,336 | Mixed | 01 Mar 2023 | ||
| Neil J. Fernandes | Senior Vice President | $20,187,036 | -$7,007,120 | -26% | Mixed | 01 Jun 2026 |
| Scott Gerald Meikle | Senior Vice President | $16,924,749 | Mixed | 01 Mar 2023 | ||
| Ava Harter | Chief Legal Officer | $15,896,701 | -$4,237,311 | -21% | Mixed | 27 Apr 2026 |
| Christina Correia | CVP , Chief Accounting Officer | $13,653,963 | Mixed | 27 Feb 2026 | ||
| George M. Schisler | Chief Legal Officer | $6,847,753 | Mixed | 03 May 2024 | ||
| Lih Shyng (rick) Tsai | Director | $5,459,988 | Mixed | 10 Nov 2023 | ||
| Sohail U. Ahmed | Director | $4,715,288 | Mixed | 06 Nov 2025 | ||
| Ava Hahn | Chief Legal Officer & SVP | $4,711,346 | Mixed | 03 Jan 2024 | ||
| Bethany J. Mayer | Director | $4,309,838 | -$212,453 | -4.7% | Mixed | 07 Nov 2025 |
Recent insider transactions for LAM RESEARCH CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Neil J. Fernandes | LRCX | Common Stock | Sale | -11.6% | $2,371,226 | $309.60 | -7,659 | 58,470 | 01 Jun 2026 | Direct |
| Neil J. Fernandes | LRCX | Common Stock | Sale | -21.6% | $4,635,894 | $255.14 | -18,170 | 66,129 | 01 May 2026 | Direct |
| Ava Harter | LRCX | Common Stock | Sale | -10.2% | $1,554,547 | $258.66 | -6,010 | 53,205 | 27 Apr 2026 | Direct |
| Ava Harter | LRCX | Common Stock | Options Exercise | 11.3% | 6,010 | 59,215 | 27 Apr 2026 | Direct | ||
| Ava Harter | LRCX | Employee Stock Option (Right to Buy) | Options Exercise | -50% | -6,010 | 6,010 | 27 Apr 2026 | Direct | ||
| Vahid Vahedi | LRCX | Common Stock | Tax liability | -1.21% | -3,382 | 276,896 | 27 Mar 2026 | Direct | ||
| Ava Harter | LRCX | Common Stock | Tax liability | -5.17% | -3,199 | 58,705 | 27 Mar 2026 | Direct | ||
| Abhijit Y. Talwalkar | LRCX | Common Stock | Gift | -4.16% | -4,571 | 105,424 | 10 Mar 2026 | Direct | ||
| Douglas R. Bettinger | LRCX | Common Stock | Sale | -4.42% | $11,214,270 | $224.03 | -50,057 | 1,081,705 | 04 Mar 2026 | Direct |
| Douglas R. Bettinger | LRCX | Common Stock | Options Exercise | 7.38% | 77,750 | 1,131,762 | 04 Mar 2026 | Direct | ||
| Douglas R. Bettinger | LRCX | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -77,750 | 0 | 04 Mar 2026 | Direct | ||
| Ava Harter | LRCX | Common Stock | Sale | -2.74% | $333,990 | $222.66 | -1,500 | 53,205 | 04 Mar 2026 | Direct |
| Douglas R. Bettinger | LRCX | Common Stock | Sale | -3.69% | $9,284,542 | $230.22 | -40,329 | 1,054,012 | 02 Mar 2026 | Direct |
| Douglas R. Bettinger | LRCX | Common Stock | Options Exercise | 6.45% | 66,310 | 1,094,341 | 02 Mar 2026 | Direct | ||
| Douglas R. Bettinger | LRCX | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -66,310 | 0 | 02 Mar 2026 | Direct | ||
| Ava Harter | LRCX | Common Stock | Sale | -6.81% | $930,000 | $232.50 | -4,000 | 54,705 | 02 Mar 2026 | Direct |
| Douglas R. Bettinger | LRCX | Common Stock | Tax liability | -4.52% | -48,673 | 1,028,031 | 27 Feb 2026 | Direct | ||
| Douglas R. Bettinger | LRCX | Common Stock | Award | 1.18% | 12,547 | 1,076,704 | 27 Feb 2026 | Direct | ||
| Douglas R. Bettinger | LRCX | Market-based Performance Restricted Stock Unit | Award | 18,820 | 18,820 | 27 Feb 2026 | Direct | |||
| Seshasayee Varadarajan | LRCX | Common Stock | Tax liability | -14.1% | -36,913 | 225,198 | 27 Feb 2026 | Direct | ||
| Seshasayee Varadarajan | LRCX | Common Stock | Award | 5.03% | 12,547 | 262,111 | 27 Feb 2026 | Direct | ||
| Seshasayee Varadarajan | LRCX | Market-based Performance Restricted Stock Unit | Award | 18,820 | 18,820 | 27 Feb 2026 | Direct | |||
| Vahid Vahedi | LRCX | Common Stock | Tax liability | -9.55% | -29,592 | 280,278 | 27 Feb 2026 | Direct | ||
| Vahid Vahedi | LRCX | Common Stock | Award | 3.01% | 9,053 | 309,870 | 27 Feb 2026 | Direct | ||
| Vahid Vahedi | LRCX | Market-based Performance Restricted Stock Unit | Award | 11,065 | 11,065 | 27 Feb 2026 | Direct | |||
| Ava Harter | LRCX | Common Stock | Tax liability | -3.11% | -1,988 | 61,904 | 27 Feb 2026 | Direct | ||
| Ava Harter | LRCX | Common Stock | Award | 12.5% | 7,106 | 63,892 | 27 Feb 2026 | Direct | ||
| Ava Harter | LRCX | Market-based Performance Restricted Stock Unit | Award | 8,685 | 8,685 | 27 Feb 2026 | Direct | |||
| Neil J. Fernandes | LRCX | Common Stock | Tax liability | -16.9% | -17,091 | 83,951 | 27 Feb 2026 | Direct | ||
| Neil J. Fernandes | LRCX | Common Stock | Award | 8.92% | 8,274 | 101,042 | 27 Feb 2026 | Direct | ||
| Neil J. Fernandes | LRCX | Market-based Performance Restricted Stock Unit | Award | 10,113 | 10,113 | 27 Feb 2026 | Direct | |||
| Timothy Archer | LRCX | Common Stock | Tax liability | -13.8% | -172,294 | 1,075,618 | 27 Feb 2026 | Direct | ||
| Timothy Archer | LRCX | Common Stock | Award | 4.27% | 51,053 | 1,247,912 | 27 Feb 2026 | Direct | ||
| Timothy Archer | LRCX | Market-based Performance Restricted Stock Unit | Award | 76,580 | 76,580 | 27 Feb 2026 | Direct | |||
| Patrick J. Lord | LRCX | Common Stock | Tax liability | -28.8% | -39,955 | 98,848 | 27 Feb 2026 | Direct | ||
| Christina Correia | LRCX | Common Stock | Tax liability | -25.6% | -19,628 | 57,168 | 27 Feb 2026 | Direct | ||
| Christina Correia | LRCX | Common Stock | Award | 26.6% | 16,159 | 76,796 | 27 Feb 2026 | Direct | ||
| Christina Correia | LRCX | Market-based Performance Restricted Stock Unit | Award | 1,362 | 1,362 | 27 Feb 2026 | Direct | |||
| Timothy Archer | LRCX | Common Stock | Gift | -0.59% | -7,080 | 1,196,859 | 24 Feb 2026 | Direct | ||
| Eric Brandt | LRCX | Common Stock | Sale | -12.1% | $7,896,150 | $225.60 | -35,000 | 253,705 | 06 Feb 2026 | Direct |
| Anirudh Devgan | LRCX | Common Stock | Award | 1,141 | 1,141 | 06 Feb 2026 | Direct | |||
| Timothy Archer | LRCX | Common Stock | Options Exercise | 29.1% | 271,530 | 1,203,939 | 04 Feb 2026 | Direct | ||
| Timothy Archer | LRCX | Market-based Performance Restricted Stock Unit | Options Exercise | -100% | -181,020 | 0 | 04 Feb 2026 | Direct | ||
| Christina Correia | LRCX | Common Stock | Options Exercise | 17.5% | 9,045 | 60,637 | 03 Feb 2026 | Direct | ||
| Christina Correia | LRCX | Market-based Performance Restricted Stock Unit | Options Exercise | -100% | -6,030 | 0 | 03 Feb 2026 | Direct | ||
| Neil J. Fernandes | LRCX | Common Stock | Options Exercise | 30.3% | 21,570 | 92,768 | 03 Feb 2026 | Direct | ||
| Neil J. Fernandes | LRCX | Market-based Performance Restricted Stock Unit | Options Exercise | -100% | -14,380 | 0 | 03 Feb 2026 | Direct | ||
| Seshasayee Varadarajan | LRCX | Common Stock | Options Exercise | 27.6% | 53,925 | 249,564 | 03 Feb 2026 | Direct | ||
| Seshasayee Varadarajan | LRCX | Market-based Performance Restricted Stock Unit | Options Exercise | -100% | -35,950 | 0 | 03 Feb 2026 | Direct | ||
| Vahid Vahedi | LRCX | Common Stock | Options Exercise | 19.8% | 49,770 | 300,817 | 03 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.