Lam Research Corp
LRCXFigures shown here come from public SEC filings. Dates beside each section show the available history.
How Lam Research Corp Makes Money
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From revenue to net income
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Source: Lam Research Corp — 10-K filed Aug 7, 2026
Financial Summary
Choose a year or quarter, compare it with the same period a year earlier, and open any row for its full filing history.
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SEC filings supply these figures; updates after the dates shown are not included. This page includes 17 annual periods. The latest annual period ends Jun 28, 2026. The latest insider filing shown is dated Jun 15, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Reported 13F positions
Each row shows what a filer reported for one date, not a current position. The link opens that filing.
| Filer | Report date | Shares | Value | Filing |
|---|---|---|---|---|
| FERGUSON WELLMAN CAPITAL MANAGEMENT, INC | 2026-03-31 | 9,949 | $2.13M | SEC filing |
| NBT BANK N A /NY | 2026-03-31 | 1,300 | $278K | SEC filing |
| Ironwood Investment Counsel, LLC | 2026-03-31 | 6,088 | $1.3M | SEC filing |
| Harvest Fund Management Co., Ltd | 2026-03-31 | 184,149 | Not shown | SEC filing |
| VESTOR CAPITAL, LLC | 2026-03-31 | 59,855 | Not shown | SEC filing |
| DARA CAPITAL US, INC. | 2026-03-31 | 14,623 | $3.12M | SEC filing |
| Phillip James Consulting Co. | 2026-03-31 | 66 | $14K | SEC filing |
| Byrne Asset Management LLC | 2026-03-31 | 597 | $128K | SEC filing |
| KIRTLAND HILLS CAPITAL MANAGEMENT, LLC | 2026-03-31 | 11,613 | $3.08M | SEC filing |
| KKM Financial LLC | 2026-03-31 | 75,048 | $12.8M | SEC filing |
| CULLINAN ASSOCIATES INC | 2026-03-31 | 64,500 | $13.8M | SEC filing |
| Councilmark Asset Management, LLC | 2026-03-31 | 1,072 | $229K | SEC filing |
| Hanson & Doremus Investment Management | 2026-03-31 | 31 | Not shown | SEC filing |
| Accent Capital Management, LLC | 2026-03-31 | 13,907 | $2.97M | SEC filing |
| Poehling Capital Management, INC. | 2026-03-31 | 3,300 | $705K | SEC filing |
| MARCO INVESTMENT MANAGEMENT LLC | 2026-03-31 | 59,370 | $12.7M | SEC filing |
| DCF Advisers, LLC | 2026-03-31 | 7,500 | $1.6M | SEC filing |
| Greenwich Wealth Management LLC | 2026-03-31 | 1,223 | Not shown | SEC filing |
| Cohen Klingenstein LLC | 2026-03-31 | 15,000 | $3.2M | SEC filing |
- Each value is checked against Lam Research Corp's share prices from within about three months of its report date (insiders' Form 4 trades and the latest close).
- Value not shown for 4 rows: the filed value is about 1,000 times too small for the share count at Lam Research Corp's share price.
- 1 row left out: the value per share it reports is far from Lam Research Corp's share prices on file from around the report date, far from the value most filers reported for that date, or the value of a security already left out, so it may describe another security or share class.
Filer report history
Two reports per filer, as filed. No change is calculated, because the data on file cannot confirm that both reports describe the same security. Filers with a row left out above, or with no row above to check, are not listed.
- Cohen Klingenstein LLC: 15,000 shares reported 2025-12-31; 15,000 shares reported 2026-03-31.
- Greenwich Wealth Management LLC: 1,449 shares reported 2025-12-31; 1,223 shares reported 2026-03-31.
- DCF Advisers, LLC: 7,500 shares reported 2025-12-31; 7,500 shares reported 2026-03-31.
- MARCO INVESTMENT MANAGEMENT LLC: 59,870 shares reported 2025-12-31; 59,370 shares reported 2026-03-31.
- Poehling Capital Management, INC.: 3,300 shares reported 2025-12-31; 3,300 shares reported 2026-03-31.
- Accent Capital Management, LLC: 14,033 shares reported 2025-12-31; 13,907 shares reported 2026-03-31.
- Hanson & Doremus Investment Management: 31 shares reported 2025-12-31; 31 shares reported 2026-03-31.
- CULLINAN ASSOCIATES INC: 97,000 shares reported 2025-12-31; 64,500 shares reported 2026-03-31.
- KKM Financial LLC: 75,048 shares reported 2025-12-31; 75,048 shares reported 2026-03-31.
- KIRTLAND HILLS CAPITAL MANAGEMENT, LLC: 11,417 shares reported 2025-12-31; 11,613 shares reported 2026-03-31.
- Byrne Asset Management LLC: 730 shares reported 2025-12-31; 597 shares reported 2026-03-31.
- DARA CAPITAL US, INC.: 14,063 shares reported 2025-12-31; 14,623 shares reported 2026-03-31.
Showing the 12 most recent filer reports.
18 filers have only one report here.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Lam Research Corp's recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2026-03-04 · Bettinger Douglas R: Larger than 61 of the 64 other insider sales of Common Stock on file. SEC filing
- 2026-03-02 · Bettinger Douglas R: Larger than 59 of the 64 other insider sales of Common Stock on file. SEC filing
- 2025-12-17 · ARCHER TIMOTHY: Larger than 60 of the 64 other insider sales of Common Stock on file. SEC filing
- 2025-12-17 · ARCHER TIMOTHY: Larger than all 64 other insider sales of Common Stock on file. SEC filing
- 2025-11-14 · Bettinger Douglas R: Larger than 58 of the 64 other insider sales of Common Stock on file. SEC filing
- 2025-10-13 · Vahedi Vahid: Larger than 62 of the 64 other insider sales of Common Stock on file. SEC filing
- 2025-02-20 · Varadarajan Seshasayee: Larger than 63 of the 64 other insider sales of Common Stock on file. SEC filing
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −8,233 | 371.17 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −2,345 | 363.33 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −1,906 | 360.15 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −1,100 | 357.98 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −1,200 | 365.16 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −7,700 | 372.23 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −4,030 | 368.03 | SEC filing |
| 2026-06-12 | BRANDT ERIC · Director | Common Stock | S — Open market or private sale | −2,708 | 362.40 | SEC filing |
Showing 8 of 11 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-04-27 | Harter Ava · Chief Legal Officer | Employee Stock Option (Right to Buy) | M — Exercise or conversion of derivative security | −6,010 | SEC filing |
| 2026-04-27 | Harter Ava · Chief Legal Officer | Common Stock | M — Exercise or conversion of derivative security | +6,010 | SEC filing |
| 2026-03-27 | Vahedi Vahid · Senior Vice President | Common Stock | F — Payment of exercise price or tax by delivering securities | −3,382 | SEC filing |
| 2026-03-27 | Harter Ava · Chief Legal Officer | Common Stock | F — Payment of exercise price or tax by delivering securities | −3,199 | SEC filing |
| 2026-03-10 | TALWALKAR ABHIJIT Y · Director | Common Stock | G — Bona fide gift | −4,571 | SEC filing |
| 2026-03-04 | Bettinger Douglas R · Chief Financial Officer & EVP | Common Stock | M — Exercise or conversion of derivative security | +26,480 | SEC filing |
| 2026-03-04 | Bettinger Douglas R · Chief Financial Officer & EVP | Employee Stock Option (Right to Buy) | M — Exercise or conversion of derivative security | −26,480 | SEC filing |
| 2026-03-04 | Bettinger Douglas R · Chief Financial Officer & EVP | Common Stock | M — Exercise or conversion of derivative security | +51,270 | SEC filing |
Showing 8 of 40 rows
Other activity
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2024-11-06 | Mayer Bethany · Director | Common Stock | J — Other acquisition or disposition | +28,930 | SEC filing |
| 2024-11-06 | Mayer Bethany · Director | Common Stock | J — Other acquisition or disposition | −28,930 | SEC filing |
| 2024-11-04 | Ahmed Sohail U · Director | Common Stock | J — Other acquisition or disposition | −3,690 | SEC filing |
| 2024-11-04 | Ahmed Sohail U · Director | Common Stock | J — Other acquisition or disposition | +3,690 | SEC filing |
Showing 4 of 4 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.