Westlake Chemical Partners LP SEC filings WLKP
Westlake Chemical Partners LP has 420 filings in SEC EDGAR's recent list, going back to Apr 29, 2014. Its latest annual report, Form 10-K, was filed on Mar 4, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2026 | Nov 4, 2026 |
| 3 | Initial insider ownership | Aug 31, 2026 | Aug 31, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 31, 2026 | Aug 31, 2026 |
| 4 | Insider transaction | Aug 13, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 13, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 13, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 4, 2026 | Aug 4, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Jun 15, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 5, 2026 | May 5, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 20, 2026 | Apr 20, 2026 |
| EFFECT | Filing | Mar 11, 2026 | — |
| CORRESP | Letter to the SEC | Mar 9, 2026 | — |
| UPLOAD | Letter from the SEC | Mar 9, 2026 | — |
| S-3 | Shelf registration | Mar 4, 2026 | — |
| 10-K | Annual report | Mar 4, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 24, 2026 | Feb 24, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 23, 2026 | Feb 18, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Material agreement, Results of operations, Regulation FD disclosure
|
Oct 30, 2025 | Oct 30, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 27, 2025 |
| 4 | Insider transaction | Aug 28, 2025 | Nov 27, 2024 |
| 4/A | Filing | Aug 28, 2025 | Aug 28, 2024 |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 3 | Initial insider ownership | Aug 7, 2025 | Aug 6, 2025 |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2025 | Aug 5, 2025 |
| 4 | Insider transaction | May 30, 2025 | May 29, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| 144 | Notice of proposed sale | May 27, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 2, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 2, 2025 | May 2, 2025 |
| 10-K | Annual report | Mar 5, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 24, 2025 | Feb 24, 2025 |
| 10-Q | Quarterly report | Nov 6, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 26, 2024 |
| 4 | Insider transaction | Aug 26, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 9, 2024 |
| 10-Q | Quarterly report | Aug 9, 2024 | Jun 30, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2024 | Aug 6, 2024 |
| 3 | Initial insider ownership | Jul 15, 2024 | Jul 15, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 15, 2024 | Jul 15, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 13, 2024 | May 10, 2024 |
| S-8 POS | Filing | May 10, 2024 | — |
| 4 | Insider transaction | May 10, 2024 | May 8, 2024 |
| 3 | Initial insider ownership | May 9, 2024 | May 8, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 8, 2024 | May 8, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | Apr 1, 2024 | Mar 28, 2024 |
| 4 | Insider transaction | Mar 25, 2024 | Mar 21, 2024 |
| DEFA14A | Additional proxy material | Mar 18, 2024 | — |
| DEF 14A | Proxy statement | Mar 18, 2024 | May 8, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 6, 2024 |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 20, 2024 | Feb 20, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2024 | — |
| 4 | Insider transaction | Nov 13, 2023 | Nov 9, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2023 | Nov 2, 2023 |
| 4 | Insider transaction | Aug 31, 2023 | Aug 29, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 23, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 21, 2023 | Aug 17, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 11, 2023 | Aug 9, 2023 |
| 4 | Insider transaction | Aug 11, 2023 | Aug 9, 2023 |
| 4 | Insider transaction | Aug 11, 2023 | Aug 9, 2023 |
| 4 | Insider transaction | Aug 11, 2023 | Aug 9, 2023 |
| 4 | Insider transaction | Aug 9, 2023 | Aug 7, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 3, 2023 | Aug 3, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 10, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2023 | May 4, 2023 |
| 3 | Initial insider ownership | Apr 28, 2023 | Apr 27, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 27, 2023 | Apr 27, 2023 |
| EFFECT | Filing | Mar 20, 2023 | — |
| CORRESP | Letter to the SEC | Mar 16, 2023 | — |
| 4 | Insider transaction | Mar 14, 2023 | Mar 13, 2023 |
| 4 | Insider transaction | Mar 13, 2023 | Mar 10, 2023 |
| UPLOAD | Letter from the SEC | Mar 8, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Mar 7, 2023 | Mar 3, 2023 |
| S-3 | Shelf registration | Mar 1, 2023 | — |
| 10-K | Annual report | Mar 1, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 21, 2023 | Feb 21, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 11, 2023 | — |
| 4 | Insider transaction | Nov 16, 2022 | Nov 15, 2022 |
| 4 | Insider transaction | Nov 14, 2022 | Nov 10, 2022 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 3, 2022 | Nov 3, 2022 |
| 4 | Insider transaction | Aug 12, 2022 | Aug 10, 2022 |
| 4 | Insider transaction | Aug 12, 2022 | Aug 10, 2022 |
| 4 | Insider transaction | Aug 12, 2022 | Aug 10, 2022 |
| 10-Q | Quarterly report | Aug 3, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 2, 2022 | Aug 2, 2022 |
| 8-K |
Current report
Material agreement
|
Jul 15, 2022 | Jul 12, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 144 | Notice of proposed sale | May 31, 2022 | — |
| 10-Q | Quarterly report | May 4, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 3, 2022 | May 3, 2022 |
| 4 | Insider transaction | Mar 9, 2022 | Mar 8, 2022 |
| 4 | Insider transaction | Mar 8, 2022 | Mar 7, 2022 |
| 3 | Initial insider ownership | Mar 2, 2022 | Mar 1, 2022 |
| 10-K | Annual report | Mar 2, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 22, 2022 | Feb 22, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 28, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 21, 2022 | — |
| 10-Q | Quarterly report | Nov 3, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2021 | Nov 2, 2021 |
| 4 | Insider transaction | Aug 13, 2021 | Aug 11, 2021 |
| 4 | Insider transaction | Aug 13, 2021 | Aug 11, 2021 |
| 4 | Insider transaction | Aug 13, 2021 | Aug 11, 2021 |
| 10-Q | Quarterly report | Aug 4, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 3, 2021 | Aug 3, 2021 |
| 4 | Insider transaction | May 14, 2021 | May 14, 2021 |
| 10-Q | Quarterly report | May 5, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2021 | May 4, 2021 |
| 4 | Insider transaction | Mar 8, 2021 | Mar 5, 2021 |
| 10-K | Annual report | Mar 2, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 23, 2021 | Feb 23, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 15, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Jan 11, 2021 | — |
| 3 | Initial insider ownership | Jan 4, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Nov 16, 2020 | Nov 12, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 11, 2020 |
| 10-Q | Quarterly report | Nov 4, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 3, 2020 | Nov 3, 2020 |
| 8-K |
Current report
Other events
|
Sep 8, 2020 | Sep 8, 2020 |
| 8-K |
Current report
Other events
|
Aug 28, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 17, 2020 | Aug 14, 2020 |
| 4 | Insider transaction | Aug 13, 2020 | Aug 12, 2020 |
| 4 | Insider transaction | Aug 13, 2020 | Aug 12, 2020 |
| 4 | Insider transaction | Aug 13, 2020 | Aug 12, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2020 | Aug 6, 2020 |
| 4 | Insider transaction | May 15, 2020 | May 14, 2020 |
| 10-Q | Quarterly report | May 6, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2020 | May 4, 2020 |
| EFFECT | Filing | Apr 16, 2020 | — |
| CORRESP | Letter to the SEC | Apr 14, 2020 | — |
| 3 | Initial insider ownership | Mar 31, 2020 | Mar 31, 2020 |
| 4 | Insider transaction | Mar 25, 2020 | Mar 24, 2020 |
| 3 | Initial insider ownership | Mar 25, 2020 | Mar 24, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 24, 2020 | Mar 24, 2020 |
| 4 | Insider transaction | Mar 24, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 23, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 23, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 23, 2020 | Mar 20, 2020 |
| 4 | Insider transaction | Mar 20, 2020 | Mar 20, 2020 |
| 4 | Insider transaction | Mar 20, 2020 | Mar 19, 2020 |
| 4 | Insider transaction | Mar 19, 2020 | Mar 18, 2020 |
| 4 | Insider transaction | Mar 18, 2020 | Mar 18, 2020 |
| 4 | Insider transaction | Mar 18, 2020 | Mar 17, 2020 |
| 4 | Insider transaction | Mar 17, 2020 | Mar 16, 2020 |
| 4 | Insider transaction | Mar 16, 2020 | Mar 13, 2020 |
| 4 | Insider transaction | Mar 16, 2020 | Mar 12, 2020 |
| 4 | Insider transaction | Mar 16, 2020 | Mar 12, 2020 |
| 4 | Insider transaction | Mar 12, 2020 | Mar 10, 2020 |
| CORRESP | Letter to the SEC | Mar 4, 2020 | — |
| UPLOAD | Letter from the SEC | Mar 4, 2020 | — |
| CORRESP | Letter to the SEC | Mar 3, 2020 | — |
| S-3 | Shelf registration | Feb 28, 2020 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Industrial Organic Chemicals (SIC 2860)
- Listed as
- WLKP (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Houston, TX
- SEC filer status
- Accelerated filer
- SEC CIK
- 1604665
Other Industrial Organic Chemicals companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.