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 |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Oct 29, 2026 | Oct 29, 2026 |
| 10-Q | Quarterly report | Oct 29, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2026 | Oct 28, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 9, 2026 |
| 8-K |
Current report
Other events
|
Aug 13, 2026 | Aug 13, 2026 |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 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 |
| 11-K | Employee savings plan report | May 18, 2026 | Dec 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
Apr 23, 2026 | Apr 23, 2026 |
| 10-Q | Quarterly report | Apr 23, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 22, 2026 | Apr 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| ARS | Annual report to shareholders | Mar 12, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 12, 2026 | — |
| DEF 14A | Proxy statement | Mar 12, 2026 | Apr 23, 2026 |
| 8-K |
Current report
Other events
|
Feb 26, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 26, 2026 | Feb 26, 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 |
| 8-K |
Current report
Officer or director change
|
Feb 18, 2026 | Feb 18, 2026 |
| 10-K | Annual report | Feb 12, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 11, 2026 | Feb 11, 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 | — |
| 8-K |
Current report
Officer or director change
|
Dec 9, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 9, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Jun 27, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 5, 2025 | Oct 31, 2025 |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2025 | Oct 30, 2025 |
| 8-K |
Current report
Other events
|
Oct 30, 2025 | Oct 30, 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 | — |
| 8-K |
Current report
Other events
|
Aug 7, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2025 | Jul 30, 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 |
| 11-K | Employee savings plan report | May 22, 2025 | Dec 31, 2024 |
| 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 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
Apr 24, 2025 | Apr 24, 2025 |
| 4 | Insider transaction | Apr 24, 2025 | Apr 22, 2025 |
| 4 | Insider transaction | Apr 24, 2025 | Apr 22, 2025 |
| 10-Q | Quarterly report | Apr 24, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 23, 2025 | Apr 23, 2025 |
| ARS | Annual report to shareholders | Mar 12, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 12, 2025 | — |
| DEF 14A | Proxy statement | Mar 12, 2025 | Apr 24, 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 |
| 8-K |
Current report
Other events
|
Feb 27, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 10-K | Annual report | Feb 14, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 7, 2025 | Feb 5, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 3, 2025 | Feb 3, 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 |
| 8-K/A |
Amended current report
Officer or director change
|
Dec 12, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Other events
|
Dec 12, 2024 | Dec 12, 2024 |
| 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 |
| 8-K |
Current report
Other events
|
Oct 24, 2024 | Oct 24, 2024 |
| 10-Q | Quarterly report | Oct 24, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 23, 2024 | Oct 23, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 9, 2024 |
| 144 | Notice of proposed sale | Aug 9, 2024 | — |
| 8-K |
Current report
Other events
|
Aug 8, 2024 | Aug 8, 2024 |
| 10-Q | Quarterly report | Jul 30, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2024 | Jul 29, 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 | — |
| 11-K | Employee savings plan report | May 29, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Apr 25, 2024 | Apr 25, 2024 |
| 10-Q | Quarterly report | Apr 25, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 24, 2024 | Apr 24, 2024 |
| ARS | Annual report to shareholders | Mar 11, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 11, 2024 | — |
| DEF 14A | Proxy statement | Mar 11, 2024 | Apr 25, 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 |
| 8-K/A | Amended current report | Feb 28, 2024 | Jan 16, 2024 |
| S-3ASR | Automatic shelf registration | 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 |
| 8-K |
Current report
Other events
|
Feb 22, 2024 | Feb 22, 2024 |
| 10-K | Annual report | Feb 15, 2024 | Dec 31, 2023 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Jan 31, 2024 | Jan 31, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jan 25, 2024 | Jan 22, 2024 |
| 8-K |
Current report
Acquisition or sale of assets, New debt
|
Jan 22, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Dec 13, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 4, 2023 | Dec 1, 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 |
| 8-K |
Current report
Other events
|
Oct 26, 2023 | Oct 26, 2023 |
| 8-K |
Current report
Officer or director change
|
Oct 26, 2023 | Oct 26, 2023 |
| 10-Q | Quarterly report | Oct 26, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 26, 2023 | Oct 25, 2023 |
| 8-K |
Current report
Officer or director change, Other events
|
Aug 3, 2023 | Aug 3, 2023 |
| 10-Q | Quarterly report | Jul 27, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 26, 2023 | Jul 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 |
| 8-K |
Current report
Officer or director change
|
Jun 28, 2023 | Jun 26, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 16, 2023 |
| S-8 | Employee stock plan registration | Jun 20, 2023 | — |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 6, 2023 |
| 11-K | Employee savings plan report | May 31, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Apr 27, 2023 | Apr 27, 2023 |
| 10-Q | Quarterly report | Apr 27, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2023 | Apr 26, 2023 |
| ARS | Annual report to shareholders | Mar 10, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 10, 2023 | — |
| DEF 14A | Proxy statement | Mar 10, 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 |
| 8-K |
Current report
Other events
|
Feb 23, 2023 | Feb 23, 2023 |
| 10-K | Annual report | Feb 15, 2023 | Dec 31, 2022 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Jan 31, 2023 | Jan 31, 2023 |
| 3 | Initial insider ownership | Jan 17, 2023 | Jan 1, 2023 |
| 8-K/A |
Amended current report
Officer or director change
|
Dec 16, 2022 | Oct 27, 2022 |
| 8-K |
Current report
Officer or director change
|
Oct 31, 2022 | Oct 27, 2022 |
| 8-K |
Current report
Other events
|
Oct 27, 2022 | Oct 27, 2022 |
| 10-Q | Quarterly report | Oct 25, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 24, 2022 | Oct 24, 2022 |
| 8-K |
Current report
Other events
|
Aug 4, 2022 | Aug 4, 2022 |
| 10-Q | Quarterly report | Aug 3, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2022 | Aug 2, 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 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 11-K | Employee savings plan report | Jun 2, 2022 | Dec 31, 2021 |
| SC 13G | Ownership over 5% (passive) | May 23, 2022 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
Apr 28, 2022 | Apr 28, 2022 |
| 10-Q | Quarterly report | Apr 28, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 27, 2022 | Apr 27, 2022 |
| DEFA14A | Additional proxy material | Mar 11, 2022 | — |
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.