ARCHER TIMOTHY 4

4 · LAM RESEARCH CORP · Filed Mar 2, 2026

AI-generated summary of this filing

Updated Mar 2, 2026

Lam Research CEO Timothy Archer Receives RSUs; Shares Withheld for Taxes

What Happened

Timothy Archer, President and CEO of Lam Research (LRCX), received time- and performance-based restricted stock unit (RSU) awards on 2026-02-27 (total awards shown: 51,053 shares and 76,580 performance-based RSUs). To satisfy tax withholding obligations upon vesting, 172,294 shares were withheld/disposed at $233.89 per share, totaling approximately $40.30 million. The awards were reported at $0.00 per share (standard for RSUs).

Key Details

Transaction date: 2026-02-27; Filing date: 2026-03-02 (filed within required reporting window).
Withheld/disposed shares: 172,294 shares at $233.89 = $40,297,844 (reported as multiple F-code tax-withholding dispositions).
Awards received: 51,053 RSUs (time-based) and 76,580 RSUs (derivative, market-based performance award).
Vesting notes:
- Time-based RSUs vest in three equal installments on 02/27/2027, 02/27/2028 and 02/27/2029. (F1)
- Performance-based RSUs vest 0%–150% on 02/27/2029 based on Lam’s TSR vs. the PHLX Semiconductor TR Index for 02/02/2026–02/01/2029. (F4)
The disposals coded “F” represent shares automatically withheld to satisfy tax withholding upon vesting (cashless withholding), not open-market sales. (F3)
The filing notes amounts include shares subject to unvested RSUs; the filing excerpt did not list a post-transaction total beneficial ownership figure. (F2)

Context

This was primarily an awards vesting event with automatic tax withholding (routine corporate compensation mechanics), not an active open-market sale. Performance RSUs are contingent on future relative TSR performance and may pay out between 0%–150% at the 2029 measurement date. Such withholding transactions are common and do not necessarily signal the insider’s view on the stock.

Form 4

Period: 2026-02-27

President and CEO

Transactions

Award
Common Stock
[F1][F2]
2026-02-27+51,053→ 1,247,912 total
Tax Payment
Common Stock
[F3][F2]
2026-02-27$233.89/sh−134,624$31,487,207→ 1,113,288 total
Tax Payment
Common Stock
[F3][F2]
2026-02-27$233.89/sh−9,975$2,333,053→ 1,103,313 total
Tax Payment
Common Stock
[F3][F2]
2026-02-27$233.89/sh−8,111$1,897,082→ 1,095,202 total
Tax Payment
Common Stock
[F3][F2]
2026-02-27$233.89/sh−19,584$4,580,502→ 1,075,618 total
Award
Market-based Performance Restricted Stock Unit
[F4]
2026-02-27+76,580→ 76,580 total
Exercise: $0.00→ Common Stock (76,580 underlying)

Holdings

Footnotes (4)

[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.

Signature

Marta Woods by Power of Attorney|2026-03-02

1 file