Western Midstream Partners LP has 7 Schedule 13D or 13G filings on record since 2025-07-09. 2 holders' latest filing reports 5% or more of common units representing limited partner interests. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Occidental Petroleum Corporation | 38.3% | 150,374,176 | SCHEDULE 13D/A, 2026-02-05 | 2026-02-03 |
| ALPS Advisors, Inc. | 8.87% | 36,629,600 | SCHEDULE 13G/A, 2026-07-09 | 2026-06-30 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-09 | ALPS Advisors, Inc. | 9.11% | SCHEDULE 13G/A |
| 2025-10-07 | ALPS Advisors, Inc. | 9.14% | SCHEDULE 13G/A |
| 2026-01-06 | ALPS Advisors, Inc. | 8.6% | SCHEDULE 13G/A |
| 2026-01-21 | Occidental Petroleum Corporation | 40.6% | SCHEDULE 13D/A |
| 2026-02-05 | Occidental Petroleum Corporation | 38.3% | SCHEDULE 13D/A |
| 2026-04-08 | ALPS Advisors, Inc. | 9.82% | SCHEDULE 13G/A |
| 2026-07-09 | ALPS Advisors, Inc. | 8.87% | SCHEDULE 13G/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.