# EDGAR Filing Document

**Accession Number:** 0001469469
**File Stem:** 0001469469-26-000005
**Filing Date:** 2026-3
**Character Count:** 6847
**Document Hash:** ce787269f07ab5ce5d76656bd1b661c5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001469469-26-000005.hdr.sgml**: 20260303

**ACCESSION NUMBER**: 0001469469-26-000005

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260302

**FILED AS OF DATE**: 20260303

**DATE AS OF CHANGE**: 20260303

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Bettinger Douglas R
- **CENTRAL INDEX KEY:** 0001469469

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-12933
- **FILM NUMBER:** 26713370

**MAIL ADDRESS:**
- **STREET 1:** C/O LAM RESEARCH CORPORATION
- **STREET 2:** 4650 CUSHING PARKWAY
- **CITY:** FREMONT
- **STATE:** CA
- **ZIP:** 94538
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LAM RESEARCH CORP
- **CENTRAL INDEX KEY:** 0000707549
- **STANDARD INDUSTRIAL CLASSIFICATION:** SPECIAL INDUSTRY MACHINERY, NEC [3559]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 942634797
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0628

**BUSINESS ADDRESS:**
- **STREET 1:** 4650 CUSHING BLVD
- **CITY:** FREMONT
- **STATE:** CA
- **ZIP:** 94538
- **BUSINESS PHONE:** 5106590200

**MAIL ADDRESS:**
- **STREET 1:** 4650 CUSHING PARKWAY
- **CITY:** FREMONT
- **STATE:** CA
- **ZIP:** 94538

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Bettinger Douglas R<br><sub>(Last) (First) (Middle)</sub><br><br>4650 CUSHING PARKWAY<br><sub>(Street)</sub><br>FREMONT, CA 94538<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-02 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Financial Officer & EVP_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>LAM RESEARCH CORP [ LRCX ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-03-02 |  | M |  | 16620 | A | $59.881 | 1044651<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-02 |  | M |  | 37980 | A | $54.057 | 1082631<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-02 |  | M |  | 11710 | A | $30.033 | 1094341<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-02 |  | S |  | 40329 | D | 230.22<sup>(2)</sup> | 1054012<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Employee Stock Option (Right to Buy) | $59.881 | 2026-03-02 |  | M |  |  | 16620 | <sup>(3)</sup> | 2028-03-01 | Common Stock | 16620 | $0 | 0 | D |  |
| Employee Stock Option (Right to Buy) | $54.057 | 2026-03-02 |  | M |  |  | 37980 | <sup>(4)</sup> | 2029-03-01 | Common Stock | 37980 | $0 | 0 | D |  |
| Employee Stock Option (Right to Buy) | $30.033 | 2026-03-02 |  | M |  |  | 11710 | <sup>(5)</sup> | 2027-03-02 | Common Stock | 11710 | $0 | 0 | D |  |

---

### Footnotes:

(1) The amount reported includes shares subject to unvested restricted stock units.

(2) The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $230.07 .00 to $230.39, inclusive

(3) The stock options will become exercisable in three equal installments on 03/01/2022, 03/01/2023 and 03/01/2024.

(4) The stock options will become exercisable in three equal installments on 03/01/2023, 03/01/2024 and 03/01/2024.

(5) The stock options will become exercisable in three equal installments on 03/02/2021, 03/02/2022, and 03/02/2023.

**Signature:** Marta Woods by Power of Attorney  
**Date:** 2026-03-03

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**