Newmarket Corp SEC filings NEU
Newmarket Corp has 1,000 filings in SEC EDGAR's recent list, going back to Aug 2, 2006. Its latest annual report, Form ARS, was filed on Mar 12, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Feb 25, 2026 | Feb 24, 2026 |
| 3 | Initial insider ownership | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 7, 2026 | — |
| 4 | Insider transaction | Dec 9, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Sep 5, 2025 | Sep 5, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Aug 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 29, 2025 | — |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 12, 2025 |
| 144 | Notice of proposed sale | May 14, 2025 | — |
| 4 | Insider transaction | Apr 24, 2025 | Apr 22, 2025 |
| 4 | Insider transaction | Apr 24, 2025 | Apr 22, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 7, 2025 | Feb 5, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 21, 2025 |
| 3 | Initial insider ownership | Jan 7, 2025 | Jan 1, 2025 |
| 3 | Initial insider ownership | Jan 7, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 10, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 27, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 27, 2024 | — |
| 4 | Insider transaction | Nov 26, 2024 | Nov 26, 2024 |
| 4 | Insider transaction | Nov 26, 2024 | Nov 26, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 9, 2024 |
| 144 | Notice of proposed sale | Aug 9, 2024 | — |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 10, 2024 | — |
| 4 | Insider transaction | Mar 8, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Mar 6, 2024 | Mar 4, 2024 |
| 4 | Insider transaction | Feb 29, 2024 | Feb 27, 2024 |
| 4 | Insider transaction | Feb 29, 2024 | Feb 27, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2024 | — |
| 4 | Insider transaction | Jan 8, 2024 | Dec 13, 2023 |
| 4 | Insider transaction | Nov 30, 2023 | Nov 28, 2023 |
| 4 | Insider transaction | Nov 30, 2023 | Nov 28, 2023 |
| 4 | Insider transaction | Nov 1, 2023 | Oct 31, 2023 |
| 3 | Initial insider ownership | Oct 26, 2023 | Oct 26, 2023 |
| 4 | Insider transaction | Jul 19, 2023 | Jul 17, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 3/A | Form 3/a submission | Mar 2, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Feb 27, 2023 | Feb 23, 2023 |
| 4 | Insider transaction | Feb 27, 2023 | Feb 23, 2023 |
| 4 | Insider transaction | Feb 27, 2023 | Feb 23, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 5 | Annual insider ownership | Feb 14, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 14, 2023 | Dec 31, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 6, 2023 | Feb 6, 2023 |
| 4 | Insider transaction | Feb 6, 2023 | Feb 3, 2023 |
| 4 | Insider transaction | Feb 6, 2023 | Feb 3, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2023 | — |
| 3 | Initial insider ownership | Jan 17, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| SC 13G | Ownership over 5% (passive) | May 23, 2022 | — |
| 3 | Initial insider ownership | Feb 25, 2022 | Feb 24, 2022 |
| 5 | Annual insider ownership | Feb 14, 2022 | Dec 31, 2021 |
| 5 | Annual insider ownership | Feb 14, 2022 | Dec 31, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| 4 | Insider transaction | Feb 7, 2022 | Feb 4, 2022 |
| 4 | Insider transaction | Feb 7, 2022 | Feb 4, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 31, 2022 | — |
| 4 | Insider transaction | Nov 10, 2021 | Nov 8, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 29, 2021 | — |
| 4 | Insider transaction | Aug 27, 2021 | Aug 27, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jul 1, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| 5 | Annual insider ownership | Feb 10, 2021 | Dec 31, 2020 |
| 5 | Annual insider ownership | Feb 10, 2021 | Dec 31, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| 4 | Insider transaction | Jan 27, 2021 | Jan 26, 2021 |
| 4 | Insider transaction | Jan 27, 2021 | Jan 26, 2021 |
| 4 | Insider transaction | Dec 22, 2020 | Dec 18, 2020 |
| 4 | Insider transaction | Jul 17, 2020 | Jul 16, 2020 |
| 3 | Initial insider ownership | Jul 17, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 1, 2020 | Jul 1, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | May 8, 2020 | — |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 27, 2020 |
| 5 | Annual insider ownership | Feb 14, 2020 | Dec 31, 2019 |
| 5 | Annual insider ownership | Feb 14, 2020 | Dec 31, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| 4 | Insider transaction | Feb 5, 2020 | Feb 4, 2020 |
| 4 | Insider transaction | Feb 5, 2020 | Feb 4, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 5, 2020 | — |
| 4 | Insider transaction | Nov 18, 2019 | Nov 14, 2019 |
| 4 | Insider transaction | Nov 18, 2019 | Nov 14, 2019 |
| 4 | Insider transaction | Oct 31, 2019 | Oct 31, 2019 |
| 4 | Insider transaction | Aug 27, 2019 | Jun 25, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jul 1, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 26, 2019 | — |
| 4 | Insider transaction | Feb 25, 2019 | Feb 21, 2019 |
| 4 | Insider transaction | Feb 14, 2019 | Feb 12, 2019 |
| 5 | Annual insider ownership | Feb 14, 2019 | Dec 31, 2018 |
| 5 | Annual insider ownership | Feb 14, 2019 | Dec 31, 2018 |
| 5 | Annual insider ownership | Feb 14, 2019 | Dec 31, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2019 | — |
| 4 | Insider transaction | Feb 8, 2019 | Feb 6, 2019 |
| 4 | Insider transaction | Feb 8, 2019 | Feb 6, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2019 | — |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Apr 12, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Dec 20, 2018 | Dec 18, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jul 2, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jul 2, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jul 2, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jul 2, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jul 2, 2018 |
| 3 | Initial insider ownership | May 24, 2018 | May 15, 2018 |
| 4 | Insider transaction | May 2, 2018 | May 1, 2018 |
| SC 13D | Ownership over 5% (active) | Apr 11, 2018 | — |
| 4 | Insider transaction | Mar 1, 2018 | Feb 26, 2018 |
| 4 | Insider transaction | Mar 1, 2018 | Feb 26, 2018 |
| 5/A | Form 5/a submission | Feb 14, 2018 | Dec 31, 2017 |
| 5 | Annual insider ownership | Feb 14, 2018 | Dec 31, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
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
- NEU (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- VA
- Headquarters
- Richmond, VA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1282637
Other Industrial Organic Chemicals companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.