Key facts
- This page summarizes Timothy Archer's Form 4 filing for LAM RESEARCH CORP (LRCX).
- 6 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 02 Mar 2026, 18:10.
Timothy Archer - 27 Feb 2026 Form 4 Insider Report for LAM RESEARCH CORP (LRCX)
- Reporting relationship
- President and CEO
- Issuer ticker
- LRCX
- Reported as of
- 27 Feb 2026
- Net transaction value
- -$40,297,844
- SEC form
- 4
- Accepted by SEC
- 02 Mar 2026, 18:10:51 UTC
- Prior SEC filing
- 25 Feb 2026
- Next SEC filing
- 06 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- Marta Woods by Power of Attorney
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Timothy Archer filed Form 4 for LAM RESEARCH CORP (LRCX) on 02 Mar 2026.
Change
- Previous filing in this sequence was filed on 25 Feb 2026.
- Current net transaction value: -$40,297,844.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001343600
Primary reporting owner
ARCHER TIMOTHY
- Relationship
- President and CEO
- Address
- 4650 CUSHING PARKWAY, FREMONT
- Signature
- Marta Woods by Power of Attorney
- Signature date
- 02 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
LRCX
transaction
Common Stock
Award
- Transaction value
- $0
- Shares
- +51,053
- Change %
- +4.3%
- Price
- $0.000000
- Shares after
- 1,247,912
- Date
- 27 Feb 2026
- Ownership
- Direct
- Footnotes
- F1, F2
LRCX
transaction
Common Stock
Tax liability
- Transaction value
- $31,487,207
- Shares
- -134,624
- Change %
- -11%
- Price
- $233.89
- Shares after
- 1,113,288
- Date
- 27 Feb 2026
- Ownership
- Direct
- Footnotes
- F2, F3
LRCX
transaction
Common Stock
Tax liability
- Transaction value
- $2,333,053
- Shares
- -9,975
- Change %
- -0.9%
- Price
- $233.89
- Shares after
- 1,103,313
- Date
- 27 Feb 2026
- Ownership
- Direct
- Footnotes
- F2, F3
LRCX
transaction
Common Stock
Tax liability
- Transaction value
- $1,897,082
- Shares
- -8,111
- Change %
- -0.74%
- Price
- $233.89
- Shares after
- 1,095,202
- Date
- 27 Feb 2026
- Ownership
- Direct
- Footnotes
- F2, F3
LRCX
transaction
Common Stock
Tax liability
- Transaction value
- $4,580,502
- Shares
- -19,584
- Change %
- -1.8%
- Price
- $233.89
- Shares after
- 1,075,618
- Date
- 27 Feb 2026
- Ownership
- Direct
- Footnotes
- F2, F3
LRCX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 48,026
- Date
- 27 Feb 2026
- Ownership
- By 401(k)
LRCX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,670
- Date
- 27 Feb 2026
- Ownership
- By Spouse 401(k)
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
LRCX
transaction
Derivative
Market-based Performance Restricted Stock Unit
Award
- Transaction value
- $0
- Shares
- +76,580
- Change %
- Price
- $0.000000
- Shares after
- 76,580
- Date
- 27 Feb 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 76,580
- Exercise price
- $0.000000
- Footnotes
- F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
The restricted stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029.
Footnote F2
The amount reported includes shares subject to unvested restricted stock units.
Footnote F3
Represents shares that were automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
Footnote F4
The Market-based performance restricted stock units will vest between 0% and 150% on 2/27/2029. The performance of this award is based on the percentile ranking of Lam Research's Total Shareholder Return relative to the Total Shareholder Return of the companies in the PHLX Semiconductor Total Return Index during the performance period of 02/2/2026 through 02/01/2029.