# EDGAR Filing Document

**Accession Number:** 0001067983
**File Stem:** 0000950170-25-108857
**Filing Date:** 2025-8
**Character Count:** 13563
**Document Hash:** f7af2f55355be397e2bb03ed6f86d8ef
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-108857.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0000950170-25-108857

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OCCIDENTAL PETROLEUM CORP /DE/
- **CENTRAL INDEX KEY:** 0000797468
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 954035997
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-37605
- **FILM NUMBER:** 251218923

**BUSINESS ADDRESS:**
- **STREET 1:** 5 GREENWAY PLAZA
- **STREET 2:** SUITE 110
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
- **BUSINESS PHONE:** 7132157000

**MAIL ADDRESS:**
- **STREET 1:** 5 GREENWAY PLAZA
- **STREET 2:** SUITE 110
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BERKSHIRE HATHAWAY INC
- **CENTRAL INDEX KEY:** 0001067983
- **STANDARD INDUSTRIAL CLASSIFICATION:** FIRE, MARINE & CASUALTY INSURANCE [6331]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 470813844
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** 3555 FARNAM STREET
- **CITY:** OMAHA
- **STATE:** NE
- **ZIP:** 68131
- **BUSINESS PHONE:** 4023461400

**MAIL ADDRESS:**
- **STREET 1:** 3555 FARNAM STREET
- **CITY:** OMAHA
- **STATE:** NE
- **ZIP:** 68131

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NBH INC
- **DATE OF NAME CHANGE:** 19980810

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 5)**

**Issuer:** OCCIDENTAL PETROLEUM CORPORATION

**Title of Class of Securities:** COMMON STOCK

**CUSIP Number:** 674599105

**Date of Event Which Requires Filing of this Statement:** 06/30/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [x] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Warren E. Buffett | Names of Reporting Persons<br>Warren E. Buffett |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>348853373.38 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>348853373.38 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>32.7% | Percent of Class Represented by Amount in Row (9)<br>32.7% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** The 348,853,373.38 shares of Common Stock reported in Boxes 6 and 8 includes warrants for an aggregate of 83,911,942.38 shares of Common Stock.

---

| 1. | Names of Reporting Persons<br>Berkshire Hathaway Inc. | Names of Reporting Persons<br>Berkshire Hathaway Inc. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>348853373.38 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>348853373.38 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>32.7% | Percent of Class Represented by Amount in Row (9)<br>32.7% |
| 12. | Type of Reporting Person (See Instructions)<br>HC, CO | Type of Reporting Person (See Instructions)<br>HC, CO |

**Comment for Type of Reporting Person:** The 348,853,373.38 shares of Common Stock reported in Boxes 6 and 8 includes warrants for an aggregate of 83,911,942.38 shares of Common Stock.

---

| 1. | Names of Reporting Persons<br>National Indemnity Company | Names of Reporting Persons<br>National Indemnity Company |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>NE | Citizenship or Place of Organization<br>NE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>348853373.38 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>348853373.38 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>348853373.38 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>32.7% | Percent of Class Represented by Amount in Row (9)<br>32.7% |
| 12. | Type of Reporting Person (See Instructions)<br>IC, CO | Type of Reporting Person (See Instructions)<br>IC, CO |

**Comment for Type of Reporting Person:** The shares of Common Stock of Occidental Petroleum Corporation ("Occidental") reported in this Schedule 13G include warrants for an aggregate of 83,911,942.38 shares of Common Stock exercisable by certain of the Reporting Persons within 60 days (the "Berkshire Warrants"). All shares of Common Stock underlying the Berkshire Warrants are treated as outstanding for purposes of computing the percentage ownership of each of the Reporting Persons reported in this Schedule 13G. The Berkshire Warrants were issued on August 8, 2019 initially for 80,000,000 million shares of Common Stock at an exercise price of $62.50 per share, but on June 26, 2020, Occidental's Board of Directors declared a distribution to its common shareholders of warrants to purchase additional shares of Common Stock, which distribution resulted in an anti-dilution adjustment to the Berkshire Warrants that lowered the exercise price to $59.624 per share and increased the number of shares of Common Stock issuable on exercise of the Berkshire Warrants to 83,858,848.81. The Berkshire Warrants have not been exercised. Additionally, on March 3, 2025, Berkshire was notified that Occidental was offering to holders of the warrants distributed on June 26, 2020 the opportunity to exercise the warrants at a temporarily reduced exercise price. On July 17, 2025, Berkshire was informed that the exercise price of the Berkshire warrants was reduced to $59.586 per share, due to an anti-dilution adjustment, and the number of shares of Common Stock issuable upon the exercise of the Berkshire Warrants was increased to 83,911,942.38.

---

**Item 1(a). Name of Issuer:**
OCCIDENTAL PETROLEUM CORPORATION

**Item 1(b). Address of Issuer's Principal Executive Offices:**
5 Greenway Plaza, Houston, TX 77046

**Item 2(a). Name of Person Filing:**
Warren E. Buffett
Berkshire Hathaway Inc.
National Indemnity Company

**Item 2(b). Address of Principal Business Office:**
Warren E. Buffett
3555 Farnam Street
Omaha, Nebraska 68131

Berkshire Hathaway Inc.
3555 Farnam Street
Omaha, Nebraska 68131

National Indemnity Company
1314 Douglas Street
Omaha, Nebraska 68102

**Item 2(c). Citizenship:**
Warren E. Buffett (United States Citizen); Berkshire Hathaway Inc. (Delaware); National Indemnity Company (Nebraska).

**Item 2(d). Title of Class of Securities:**
COMMON STOCK

**Item 2(e). CUSIP Number:**
674599105

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [x] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [x] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

See the Cover Pages for each of the Reporting Persons.

**(b) Percent of class:**

See the Cover Pages for each of the Reporting Persons.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

See the Cover Pages for each of the Reporting Persons.

**(ii) Shared power to vote or to direct the vote:**

See the Cover Pages for each of the Reporting Persons.

**(iii) Sole power to dispose or to direct the disposition of:**

See the Cover Pages for each of the Reporting Persons.

**(iv) Shared power to dispose or to direct the disposition of:**

See the Cover Pages for each of the Reporting Persons.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

See Exhibit A.

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Warren E. Buffett**

**Date:** 08/14/2025

**By:** /s/ Warren E. Buffett

**Name & Title:** To Come

**Berkshire Hathaway Inc.**

**Date:** 08/14/2025

**By:** /s/ Warren E. Buffett

**Name & Title:** Chariman of the Board

**National Indemnity Company**

**Date:** 08/14/2025

**By:** /s/ Warren E. Buffett

**Name & Title:** Attorney-in-Fact