Ava Harter - 27 Feb 2026 Form 4 Insider Report for LAM RESEARCH CORP (LRCX)

Reporting relationship: Chief Legal Officer
Issuer ticker: LRCX
Reported as of: 27 Feb 2026
Net transaction value: -$1,213,187
SEC form: 4
Accepted by SEC: 02 Mar 2026, 18:12:51 UTC
Prior SEC filing: 28 Oct 2025
Next SEC filing: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: Marta Woods by Power of Attorney

Key filing fact

Ava Harter filed Form 4 for LAM RESEARCH CORP (LRCX) on 02 Mar 2026.

Key facts

This page summarizes Ava Harter's Form 4 filing for LAM RESEARCH CORP (LRCX).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Mar 2026, 18:12.

Change

Previous filing in this sequence was filed on 28 Oct 2025.
Current net transaction value: -$1,213,187.

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

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001642415 Primary reporting owner

Harter Ava

Relationship: Chief Legal Officer
Address: 4650 CUSHING PKWY, 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: +7,106
Change %: +13%
Price: $0.000000
Shares after: 63,892
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F1, F2

LRCX transaction

Common Stock

Tax liability

Transaction value: $464,973
Shares: -1,988
Change %: -3.1%
Price: $233.89
Shares after: 61,904
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F2, F3

LRCX transaction

Common Stock

Tax liability

Transaction value: $748,214
Shares: -3,199
Change %: -5.2%
Price: $233.89
Shares after: 58,705
Date: 27 Mar 2026
Ownership: Direct
Footnotes: F2, F3

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: +8,685
Change %
Price: $0.000000
Shares after: 8,685
Date: 27 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 8,685
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.