OCCIDENTAL PETROLEUM CORP /DE/ — DEFA14A Filings
29 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by OCCIDENTAL PETROLEUM CORP /DE/ (OXY-WT), sorted by most recent first. Each row links to the full filing on EdgarLookup. OCCIDENTAL PETROLEUM CORP /DE/ has filed 29 DEFA14A documents with the SEC since 2016. To view all SEC filings by OCCIDENTAL PETROLEUM CORP /DE/, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
11-K
13F-HR
13F-HR/A
15-12B
25
25-NSE
3
3/A
4
4/A
424B1
424B2
424B3
424B5
424B7
425
5
8-A12B
8-B12B/A
8-K
8-K/A
ARS
CERT
CORRESP
DEF 14A
DEFA14A
DEFC14A
DFAN14A
EFFECT
FWP
NO ACT
POS AM
POSASR
PRE 14A
PREC14A
PRER14A
PRRN14A
PX14A6G
S-3
S-3/A
S-3ASR
S-3D
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13D/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001628280-26-019821 | Mar 19, 2026 | — |
| DEFA14A | DEFA14A | 0000797468-25-000055 | Mar 20, 2025 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0000797468-24-000076 | Mar 21, 2024 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001308179-23-000332 | Mar 23, 2023 | — |
| DEFA14A | DEFA14A | 0001140361-22-016699 | Apr 29, 2022 | — |
| DEFA14A | DEFA14A | 0001140361-22-013468 | Apr 7, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-22-000871 | Mar 25, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-21-000857 | Mar 26, 2021 | — |
| DEFA14A | DEFA14A | 0001140361-20-010011 | Apr 28, 2020 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-20-001183 | Apr 17, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-007997 | Apr 3, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-007833 | Apr 2, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-006854 | Mar 25, 2020 | — |
| DEFA14A | DEFA 14A | 0001140361-20-006638 | Mar 24, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-005757 | Mar 13, 2020 | — |
| DEFA14A | SCHEDULE 14A | 0000950157-19-000786 | Jul 25, 2019 | — |
| DEFA14A | SCHEDULE 14A | 0000950157-19-000781 | Jul 23, 2019 | — |
| DEFA14A | — | 0000950157-19-000778 | Jul 22, 2019 | — |
| DEFA14A | SCHEDULE 14A | 0000950157-19-000776 | Jul 22, 2019 | — |
| DEFA14A | — | 0000950157-19-000775 | Jul 22, 2019 | — |
| DEFA14A | OCCIDENTAL PETROLEUM CORP - DEFA14A | 0001308179-19-000073 | Mar 28, 2019 | — |
| DEFA14A | OCCIDENTAL PETROLEUM CORP - DEFA14A | 0001308179-18-000071 | Mar 22, 2018 | — |
| DEFA14A | OCCIDENTAL PETROLEUM CORPORATION - DEFA14A | 0001308179-17-000066 | Mar 24, 2017 | — |
| DEFA14A | OCCIDENTAL PETROLEUM CORPORATION - DEFA14A | 0001308179-16-000249 | Mar 17, 2016 | — |
| DEFA14A | ADDITIONAL PROXY MATERIALS | 0000797468-13-000034 | Apr 29, 2013 | — |
| DEFA14A | ADDITIONAL PROXY MATERIALS | 0000797468-13-000030 | Apr 29, 2013 | — |
| DEFA14A | ADDITIONAL PROXY MATERIALS | 0000797468-13-000022 | Apr 8, 2013 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0000797468-11-000032 | Apr 22, 2011 | — |
| DEFA14A | — | 0000797468-10-000031 | Apr 28, 2010 | — |