Lam Research Corporation
LRCXLast close · Oct 16, 2026263.94−13.52 (−4.87%)
Market cap$330.3B
Between Jun 11, 2026 and Sep 9, 2026, Lam Research (LRCX) insiders filed 40 Form 4 transactions: 29 sales worth $79.7M in total and no open-market purchase; 28 of the sales were under 10b5-1 plans set in advance. The largest seller was Archer Timothy, $11.7M. 11 other filings were grants, exercises or gifts, which say nothing about buying or selling.
40
0
29
38
Form 4 transactions
| Date | Insider | Title | Code | Plan | Shares | Price | Value |
|---|---|---|---|---|---|---|---|
| 2026-09-09 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 30.03 | $900,990 |
| 2026-09-09 | ARCHER TIMOTHY | President and CEO | S | 10b5-1 | 30,000 | 319.26 | $9.6M |
| 2026-09-09 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 0.00 | $0 |
| 2026-09-09 | Mayer Bethany | Director | S | 9,557 | 314.74 | $3.0M | |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | S | 10b5-1 | 20,000 | 291.32 | $5.8M |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | M | 10b5-1 | 12,270 | 59.88 | $734,739.9 |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | S | 10b5-1 | 12,270 | 291.32 | $3.6M |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | M | 10b5-1 | 27,480 | 30.03 | $825,306.8 |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | S | 10b5-1 | 27,480 | 291.32 | $8.0M |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | M | 10b5-1 | 12,270 | 0.00 | $0 |
| 2026-09-02 | Varadarajan Seshasayee | Senior Vice President | M | 10b5-1 | 27,480 | 0.00 | $0 |
| 2026-08-31 | Harter Ava | Chief Legal Officer | S | 10b5-1 | 5,000 | 302.46 | $1.5M |
| 2026-08-06 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 30.03 | $900,990 |
| 2026-08-06 | ARCHER TIMOTHY | President and CEO | S | 10b5-1 | 30,000 | 300.00 | $9.0M |
| 2026-08-06 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 0.00 | $0 |
| 2026-08-05 | Harter Ava | Chief Legal Officer | F | 5,790 | 307.42 | $1.8M | |
| 2026-07-13 | TALWALKAR ABHIJIT Y | Director | S | 10b5-1 | 18,282 | 335.00 | $6.1M |
| 2026-07-02 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 30.03 | $900,990 |
| 2026-07-02 | ARCHER TIMOTHY | President and CEO | S | 10b5-1 | 30,000 | 390.01 | $11.7M |
| 2026-07-02 | ARCHER TIMOTHY | President and CEO | M | 10b5-1 | 30,000 | 0.00 | $0 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 300 | 355.71 | $106,713 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 1,393 | 357.24 | $497,635.3 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 1,100 | 357.98 | $393,778 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 3,828 | 359.08 | $1.4M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 1,906 | 360.15 | $686,445.9 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 819 | 361.21 | $295,831 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 2,708 | 362.40 | $981,379.2 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 2,345 | 363.33 | $852,008.9 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 2,300 | 364.41 | $838,143 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 1,200 | 365.16 | $438,192 |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 5,803 | 367.01 | $2.1M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 4,030 | 368.03 | $1.5M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 4,198 | 369.16 | $1.5M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 5,037 | 370.27 | $1.9M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 8,233 | 371.17 | $3.1M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 7,700 | 372.23 | $2.9M |
| 2026-06-12 | BRANDT ERIC | Director | S | 10b5-1 | 1,600 | 373.09 | $596,944 |
| 2026-06-11 | BRANDT ERIC | Director | S | 10b5-1 | 974 | 337.56 | $328,783.4 |
| 2026-06-11 | BRANDT ERIC | Director | S | 10b5-1 | 1,083 | 338.62 | $366,725.5 |
| 2026-06-11 | BRANDT ERIC | Director | S | 10b5-1 | 1,895 | 339.75 | $643,826.3 |
Codes are the SEC's: P open-market purchase, S open-market sale; M exercise, F tax withholding, A grant and G gift are routine. A 10b5-1 flag means the trade ran under a plan adopted in advance. Method notes in where the numbers come from.