TIMOTHY ARCHER - 27 Feb 2026 Form 4 Insider Report for LAM RESEARCH CORP (LRCX)

Role
President and CEO
Signature
Marta Woods by Power of Attorney
Issuer symbol
LRCX
Transactions as of
27 Feb 2026
Net transactions value
-$40,297,844
Form type
4
Filing time
02 Mar 2026, 18:10:51 UTC
Previous filing
25 Feb 2026
Next filing
06 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
ARCHER TIMOTHY President and CEO 4650 CUSHING PARKWAY, FREMONT Marta Woods by Power of Attorney 02 Mar 2026 0001343600

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction LRCX Common Stock Award $0 +51,053 +4.3% $0.000000 1,247,912 27 Feb 2026 Direct F1, F2
transaction LRCX Common Stock Tax liability $31,487,207 -134,624 -11% $233.89 1,113,288 27 Feb 2026 Direct F2, F3
transaction LRCX Common Stock Tax liability $2,333,053 -9,975 -0.9% $233.89 1,103,313 27 Feb 2026 Direct F2, F3
transaction LRCX Common Stock Tax liability $1,897,082 -8,111 -0.74% $233.89 1,095,202 27 Feb 2026 Direct F2, F3
transaction LRCX Common Stock Tax liability $4,580,502 -19,584 -1.8% $233.89 1,075,618 27 Feb 2026 Direct F2, F3
holding LRCX Common Stock 48,026 27 Feb 2026 By 401(k)
holding LRCX Common Stock 5,670 27 Feb 2026 By Spouse 401(k)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction LRCX Market-based Performance Restricted Stock Unit Award $0 +76,580 $0.000000 76,580 27 Feb 2026 Common Stock 76,580 $0.000000 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The restricted stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029.
F2 The amount reported includes shares subject to unvested restricted stock units.
F3 Represents shares that were automatically withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
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.