Occidental Petroleum's three largest insider shareholders as of September 12, 2026 are Hathaway Inc Berkshire (TenPercentOwner, 264.94Mn shares), Vicki A. Hollub (President And Ceo, 1.04Mn shares), Richard A. Jackson (President And Ceo, 444.10K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Hathaway Inc Berkshire | TenPercentOwner | 0 | 264,941,431 | 264,941,431 | 98.4% | 11 Feb, 2025 |
| 2 | Vicki A. Hollub | President And Ceo | 1,037,826 | 0 | 1,037,826 | 0.4% | 03 Jun, 2026 |
| 3 | Richard A. Jackson | President And Ceo | 444,098 | 0 | 444,098 | 0.2% | 24 Jun, 2026 |
| 4 | Kenneth Dillon | Senior Vice President | 372,201 | 0 | 372,201 | 0.1% | 03 Mar, 2026 |
| 5 | Jeff F Simmons | Senior Vice President | 332,726 | 0 | 332,726 | 0.1% | 03 Mar, 2026 |
| 6 | Robert L Peterson | Senior Vice President | 313,199 | 0 | 313,199 | 0.1% | 03 Mar, 2026 |
| 7 | Stephen I Chazen | Ceo | 293,777 | 0 | 293,777 | 0.1% | 11 May, 2022 |
| 8 | Sunil Mathew | Svp Cfo | 228,739 | 0 | 228,739 | 0.1% | 03 Mar, 2026 |
| 9 | William R Klesse | Director | 222,149 | 0 | 222,149 | 0.1% | 06 May, 2026 |
| 10 | Sylvia J Kerrigan | Svp Chief Legal Officer | 179,516 | 0 | 179,516 | 0.1% | 03 Mar, 2026 |
| 11 | Marcia E. Backus | Svp, Gc Cco | 150,792 | 0 | 150,792 | 0.1% | 02 Mar, 2022 |
| 12 | Peter J. Bennett | Vice President | 146,156 | 0 | 146,156 | 0.1% | 01 Mar, 2024 |
| 13 | Christopher O Champion | Vp, Cao And Controller | 144,004 | 0 | 144,004 | 0.1% | 03 Mar, 2026 |
| 14 | Carlos M Gutierrez | Director | 82,651 | 0 | 82,651 | 0.0% | 06 May, 2026 |
| 15 | Avedick Baruyr Poladian | Director | 79,575 | 0 | 79,575 | 0.0% | 06 May, 2026 |
| 16 | Jack B Moore | Director | 76,431 | 0 | 76,431 | 0.0% | 06 May, 2026 |
| 17 | Bob Shearer | Director | 66,463 | 0 | 66,463 | 0.0% | 06 May, 2026 |
| 18 | Andrew Gould | Director | 46,334 | 0 | 46,334 | 0.0% | 06 May, 2026 |
| 19 | Brad Pollack | Svp General Counsel | 42,660 | 0 | 42,660 | 0.0% | 04 Aug, 2026 |
| 20 | Claire Oneill | Director | 16,265 | 0 | 16,265 | 0.0% | 06 May, 2026 |
| 21 | Vicky A Bailey | Director | 15,490 | 0 | 15,490 | 0.0% | 06 May, 2026 |
| 22 | Kenneth B. Robinson | Director | 15,359 | 0 | 15,359 | 0.0% | 06 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 01 Aug, 2026 | Brad Pollack | Svp General Counsel | Acquired A | 26,284 | $0.00 | $0 | 42,660 | Direct |
| 23 Jun, 2026 | Richard A. Jackson | President And Ceo | Acquired P | 4,770 | $52.38 | $249.85K | 444,098 | Direct |
| 01 Jun, 2026 | Richard A. Jackson | President And Ceo | Acquired A | 101,833 | $0.00 | $0 | 439,328 | Direct |
| 01 Jun, 2026 | Vicki A. Hollub | Director | Acquired A | 3,183 | $0.00 | $0 | 1,112,004 | Direct |
| 01 Jun, 2026 | Vicki A. Hollub | Director | Disposed F | 701 | $58.92 | $41.30K | 1,111,303 | Direct |
| 01 Jun, 2026 | Vicki A. Hollub | Director | Disposed F | 73,477 | $58.92 | $4.33Mn | 1,037,826 | Direct |
| 04 May, 2026 | Jack B Moore | Director | Acquired A | 6,720 | $0.00 | $0 | 77,910 | Direct |
| 04 May, 2026 | Andrew Gould | Director | Acquired A | 4,978 | $0.00 | $0 | 47,828 | Direct |
| 04 May, 2026 | Carlos M Gutierrez | Director | Acquired A | 3,734 | $0.00 | $0 | 82,651 | Direct |
| 04 May, 2026 | Claire Oneill | Director | Acquired A | 3,734 | $0.00 | $0 | 16,265 | Direct |
| 04 May, 2026 | William R Klesse | Director | Acquired A | 4,149 | $0.00 | $0 | 223,062 | Direct |
| 04 May, 2026 | Avedick Baruyr Poladian | Director | Acquired A | 4,149 | $0.00 | $0 | 79,575 | Direct |
| 04 May, 2026 | Vicky A Bailey | Director | Acquired A | 3,734 | $0.00 | $0 | 16,713 | Direct |
| 04 May, 2026 | Bob Shearer | Director | Acquired A | 3,734 | $0.00 | $0 | 66,463 | Direct |
| 04 May, 2026 | Kenneth B. Robinson | Director | Acquired A | 4,149 | $0.00 | $0 | 16,272 | Direct |
| 04 May, 2026 | Jack B Moore | Director | Disposed F | 1,479 | $60.27 | $89.14K | 76,431 | Direct |
| 04 May, 2026 | Andrew Gould | Director | Disposed F | 1,494 | $60.27 | $90.04K | 46,334 | Direct |
| 04 May, 2026 | Kenneth B. Robinson | Director | Disposed F | 913 | $60.27 | $55.03K | 15,359 | Direct |
| 04 May, 2026 | Vicky A Bailey | Director | Disposed F | 1,223 | $60.27 | $73.71K | 15,490 | Direct |
| 04 May, 2026 | William R Klesse | Director | Disposed F | 913 | $60.27 | $55.03K | 222,149 | Direct |