Updated Jul 16, 2026 · Last SEC filing 2026-07-14
LAM RESEARCH CORP (LRCX) has filed 6 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 1 Form 8-K material event filings were reported by LRCX in the last 90 days. 8 Form 144 notices of proposed sale were filed for LRCX stock. InsiderAlpha tracks every LRCX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Special Industry Machinery, NEC (SIC 3559) |
|---|---|
| SEC CIK | 0000707549 |
| Form 4 filings (90d) | 6 |
|---|---|
| Form 8-K filings (90d) | 1 |
| Form 144 notices (90d) | 8 |
| Latest Form 4 filing | 2026-07-14 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| TALWALKAR ABHIJIT Y | Director | S — Open-market sale [10b5-1] | 18.3K | $335.00 | $6.12M | SEC | |
| ARCHER TIMOTHY | President and CEO | S — Open-market sale | 30.0K | $390.01 | $11.70M | SEC | |
| ARCHER TIMOTHY | President and CEO | M — Option exercise | 30.0K | $30.03 | $901K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 4.3K | $348.73 | $1.51M | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 3.2K | $344.92 | $1.11M | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 6.6K | $347.86 | $2.29M | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.5K | $349.79 | $531K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.9K | $339.75 | $644K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.1K | $338.62 | $367K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 974 | $337.56 | $329K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.1K | $341.81 | $366K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.3K | $340.68 | $435K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 1.5K | $343.96 | $509K | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 3.6K | $342.91 | $1.25M | SEC | |
| BRANDT ERIC | Director | S — Open-market sale | 2.8K | $345.84 | $979K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for LAM RESEARCH CORP (LRCX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| BRANDT ERIC | 26 | $19.12M |
| Harter Ava | 3 | $2.02M |
| ARCHER TIMOTHY | 3 | $12.60M |
| Fernandes Neil J | 2 | $7.01M |
| TALWALKAR ABHIJIT Y | 1 | $6.12M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LRCX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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