Comparable stake leader
BERKSHIRE HATHAWAY INC
SEC ownership of OCCIDENTAL PETROLEUM CORP /DE/
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000797468.
Disclosed value leader
BERKSHIRE HATHAWAY INC
Comparable rows
50/50
Latest evidence
01 Aug 2026
- Public ticker
- OXY, OXY-WT on NYSE
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BERKSHIRE HATHAWAY INC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BERKSHIRE HATHAWAY INC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
01 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000797468
- Issuer location
- Houston, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of OCCIDENTAL PETROLEUM CORP /DE/ (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BERKSHIRE HATHAWAY INC
Disclosed value leader
BERKSHIRE HATHAWAY INC
Comparable rows
50/50
Latest evidence
01 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 33%
13D/G row: BERKSHIRE HATHAWAY INC
Showing 1-8 of 50 holder rows.
Quick read
BERKSHIRE HATHAWAY INC leads the comparable SEC ownership view at 33%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BERKSHIRE HATHAWAY INC's linked filing trail.
Comparable ownership
Top 5
BERKSHIRE HATHAWAY INC
33%
DODGE & COX
7.5%
VANGUARD CAPITAL MANAGEMENT LLC
5.5%
BlackRock, Inc.
5.2%
Vicki A. Hollub
0.11%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BERKSHIRE HATHAWAY INC |
13D/G
3/4/5
13F
Warren E. Buffett · 10%+ Owner · Company
|
33%
|
$16,155,399,721
348,853,373 shares
|
$0 | 30 Jun 2025 |
| DODGE & COX |
13D/G
13F
Company
|
7.5%
|
$4,294,740,609
74,085,572 shares
|
-$589,540,408 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.5%
|
$3,553,336,215
54,666,711 shares
|
$0 | 31 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
5.2%
from 13D/G
|
$2,712,879,736
55,855,049 shares
|
— | 30 Jun 2026 |
| Vicki A. Hollub |
3/4/5
Director
|
0.11%
|
$69,210,440
1,064,776 shares
|
— | 01 Jun 2026 |
| Richard A. Jackson |
3/4/5
President and CEO, Director
|
0.05%
|
$23,915,233
454,150 shares
|
+$249,853 | 23 Jun 2026 |
| Kenneth Dillon |
3/4/5
Senior Vice President
|
0.04%
|
$17,842,587
392,231 shares
|
— | 28 Feb 2026 |
| Jeff F. Simmons |
3/4/5
Senior Vice President
|
0.03%
|
$15,358,196
337,617 shares
|
— | 28 Feb 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$444,753.
Buys
$444,753
Insiders: 2
Sells
$0
Insiders: 0
Net
+$444,753
Shares: +9,770
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 9,770
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 4,770 | 0 | $249,853 | $0 | +$249,853 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 5,000 | 0 | $194,900 | $0 | +$194,900 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 26 reporting-owner rows connected to OCCIDENTAL PETROLEUM CORP /DE/. Open a relationship link for the CIK-to-CIK filing trail.
Rows
26
Largest Forms 3/4/5 holder
BERKSHIRE HATHAWAY INC
Net 12M change
+$444,753
Latest report
01 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| BERKSHIRE HATHAWAY INC | 10%+ Owner | $12,404,425,329 | Filing P/S | 07 Feb 2025 | ||
| Vicki A. Hollub | Director | $69,210,440 | Mixed | 01 Jun 2026 | ||
| Richard A. Jackson | President and CEO, Director | $23,915,233 | +$249,853 | +1.1% | Mixed | 23 Jun 2026 |
| Kenneth Dillon | Senior Vice President | $17,842,587 | Mixed | 28 Feb 2026 | ||
| Stephen I. Chazen | Director | $17,703,913 | Mixed | 09 May 2022 | ||
| Jeff F. Simmons | Senior Vice President | $15,358,196 | Mixed | 28 Feb 2026 | ||
| Robert L. Peterson | Senior Vice President | $14,809,541 | Mixed | 28 Feb 2026 | ||
| William R. Klesse | Director | $14,598,678 | +$194,900 | +1.4% | Mixed | 04 May 2026 |
| Sunil Mathew | Svp & Cfo | $10,635,561 | Mixed | 28 Feb 2026 | ||
| Marcia E. Backus | Svp, Gc & Cco | $9,329,029 | Mixed | 28 Feb 2022 | ||
| Peter J. Bennett | Vice President | $9,226,963 | Mixed | 28 Feb 2024 | ||
| Sylvia J. Kerrigan | SVP & Chief Legal Officer | $8,241,513 | Mixed | 28 Feb 2026 | ||
| Christopher O Champion | VP, CAO and Controller | $6,715,414 | Mixed | 28 Feb 2026 | ||
| Avedick Baruyr Poladian | Director | $6,147,375 | Mixed | 04 May 2026 | ||
| Carlos M. Gutierrez | Director | $5,372,315 | Mixed | 04 May 2026 | ||
| Jack B. Moore | Director | $4,968,015 | Mixed | 04 May 2026 | ||
| Bob Shearer | Director | $4,320,095 | Mixed | 04 May 2026 | ||
| Neil R. Ackerman | Vice President | $3,759,091 | Mixed | 05 May 2023 | ||
| Andrew Gould | Director | $3,011,710 | Mixed | 04 May 2026 | ||
| Brad Pollack | SVP & General Counsel | $2,189,778 | Median | 01 Aug 2026 |
Recent insider transactions for OCCIDENTAL PETROLEUM CORP /DE/
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Brad Pollack | OXY | Common Stock | Award | 160.5% | 26,284 | 42,660 | 01 Aug 2026 | Direct | ||
| Richard A. Jackson | OXY | Common Stock | Purchase | 1.09% | $249,853 | $52.38 | 4,770 | 444,098 | 23 Jun 2026 | Direct |
| Richard A. Jackson | OXY | Common Stock | Award | 30.2% | 101,833 | 439,328 | 01 Jun 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Tax liability | -6.67% | -74,178 | 1,037,826 | 01 Jun 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Award | 0.29% | 3,183 | 1,112,004 | 01 Jun 2026 | Direct | ||
| Jack B. Moore | OXY | Common Stock | Tax liability | -1.9% | -1,479 | 76,431 | 04 May 2026 | Direct | ||
| Jack B. Moore | OXY | Common Stock | Award | 9.44% | 6,720 | 77,910 | 04 May 2026 | Direct | ||
| Vicky A. Bailey | OXY | Common Stock | Tax liability | -7.32% | -1,223 | 15,490 | 04 May 2026 | Direct | ||
| Vicky A. Bailey | OXY | Common Stock | Award | 28.8% | 3,734 | 16,713 | 04 May 2026 | Direct | ||
| Kenneth B. Robinson | OXY | Common Stock | Tax liability | -5.61% | -913 | 15,359 | 04 May 2026 | Direct | ||
| Kenneth B. Robinson | OXY | Common Stock | Award | 34.2% | 4,149 | 16,272 | 04 May 2026 | Direct | ||
| Andrew Gould | OXY | Common Stock | Tax liability | -3.12% | -1,494 | 46,334 | 04 May 2026 | Direct | ||
| Andrew Gould | OXY | Common Stock | Award | 11.6% | 4,978 | 47,828 | 04 May 2026 | Direct | ||
| Carlos M. Gutierrez | OXY | Common Stock | Award | 4.73% | 3,734 | 82,651 | 04 May 2026 | Direct | ||
| William R. Klesse | OXY | Common Stock | Tax liability | -0.41% | -913 | 222,149 | 04 May 2026 | Direct | ||
| William R. Klesse | OXY | Common Stock | Award | 1.9% | 4,149 | 223,062 | 04 May 2026 | Direct | ||
| Avedick Baruyr Poladian | OXY | Common Stock | Award | 5.5% | 4,149 | 79,575 | 04 May 2026 | Direct | ||
| Bob Shearer | OXY | Common Stock | Award | 5.95% | 3,734 | 66,463 | 04 May 2026 | Direct | ||
| Claire ONeill | OXY | Common Stock | Award | 29.8% | 3,734 | 16,265 | 04 May 2026 | Direct | ||
| Avedick Baruyr Poladian | OXY | Common Stock | Gift | 5,000 | 5,000 | 14 Apr 2026 | By Trust 3 | |||
| Avedick Baruyr Poladian | OXY | Common Stock | Gift | 5,000 | 5,000 | 14 Apr 2026 | By Trust 2 | |||
| Avedick Baruyr Poladian | OXY | Common Stock | Gift | 5,000 | 5,000 | 14 Apr 2026 | By Trust 1 | |||
| Avedick Baruyr Poladian | OXY | Common Stock | Gift | -16.6% | -15,000 | 75,426 | 14 Apr 2026 | Direct | ||
| Robert L. Peterson | OXY | Common Stock | Award | 8.34% | 24,115 | 313,199 | 01 Mar 2026 | Direct | ||
| Sunil Mathew | OXY | Common Stock | Award | 13% | 26,376 | 228,739 | 01 Mar 2026 | Direct | ||
| Jeff F. Simmons | OXY | Common Stock | Award | 7.81% | 24,115 | 332,726 | 01 Mar 2026 | Direct | ||
| Sylvia J. Kerrigan | OXY | Common Stock | Award | 37.5% | 48,983 | 179,516 | 01 Mar 2026 | Direct | ||
| Richard A. Jackson | OXY | Common Stock | Award | 12.6% | 37,679 | 337,495 | 01 Mar 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Award | 9.28% | 94,198 | 1,108,806 | 01 Mar 2026 | Direct | ||
| Kenneth Dillon | OXY | Common Stock | Award | 8.1% | 27,883 | 372,201 | 01 Mar 2026 | Direct | ||
| Christopher O Champion | OXY | Common Stock | Award | 10.4% | 13,565 | 144,004 | 01 Mar 2026 | Direct | ||
| Robert L. Peterson | OXY | Common Stock | Tax liability | -3.02% | -8,988 | 289,084 | 28 Feb 2026 | Direct | ||
| Sunil Mathew | OXY | Common Stock | Tax liability | -4.59% | -9,732 | 202,363 | 28 Feb 2026 | Direct | ||
| Jeff F. Simmons | OXY | Common Stock | Tax liability | -2.97% | -9,436 | 308,611 | 28 Feb 2026 | Direct | ||
| Sylvia J. Kerrigan | OXY | Common Stock | Tax liability | -12.3% | -18,304 | 130,533 | 28 Feb 2026 | Direct | ||
| Richard A. Jackson | OXY | Common Stock | Tax liability | -3.27% | -10,131 | 299,816 | 28 Feb 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Tax liability | -3.16% | -33,136 | 1,014,608 | 28 Feb 2026 | Direct | ||
| Kenneth Dillon | OXY | Common Stock | Tax liability | -2.86% | -10,131 | 344,318 | 28 Feb 2026 | Direct | ||
| Christopher O Champion | OXY | Common Stock | Tax liability | -3.67% | -4,970 | 130,439 | 28 Feb 2026 | Direct | ||
| Carlos M. Gutierrez | OXY | Common Stock | Gift | 4.86% | 3,656 | 78,917 | 23 Feb 2026 | Direct | ||
| Robert L. Peterson | OXY | Common Stock | Tax liability | -2.18% | -6,655 | 298,072 | 18 Feb 2026 | Direct | ||
| Robert L. Peterson | OXY | Common Stock | Award | 5.84% | 16,817 | 304,727 | 18 Feb 2026 | Direct | ||
| Richard A. Jackson | OXY | Common Stock | Tax liability | -2.29% | -7,268 | 309,947 | 18 Feb 2026 | Direct | ||
| Richard A. Jackson | OXY | Common Stock | Award | 6.16% | 18,393 | 317,215 | 18 Feb 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Tax liability | -2.17% | -23,265 | 1,047,744 | 18 Feb 2026 | Direct | ||
| Vicki A. Hollub | OXY | Common Stock | Award | 5.84% | 59,121 | 1,071,009 | 18 Feb 2026 | Direct | ||
| Kenneth Dillon | OXY | Common Stock | Tax liability | -2.01% | -7,264 | 354,449 | 18 Feb 2026 | Direct | ||
| Kenneth Dillon | OXY | Common Stock | Award | 5.36% | 18,393 | 361,713 | 18 Feb 2026 | Direct | ||
| Christopher O Champion | OXY | Common Stock | Tax liability | -2.67% | -3,712 | 135,409 | 18 Feb 2026 | Direct | ||
| Christopher O Champion | OXY | Common Stock | Award | 7.08% | 9,197 | 139,121 | 18 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.