# Newmarket Corp: filings

NEU · NYSE · CIK 1282637 · [Materials](/sectors/materials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/neu.md) · [Financials](/companies/neu/financials.md) · [Filings](/companies/neu/filings.md) · [Insiders](/companies/neu/insiders.md)

## Reports and events: 301 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 285, 8-K 200, 5 65, 10-Q 54, SC 13G/A 53, DEFA14A 19, 10-K 18, 11-K 18, DEF 14A 18, 3 14, SC 13G 14, ARS 9, UPLOAD 8, SD 6, CORRESP 5, SC 13D/A 5, 4/A 4, 8-K/A 4, SCHEDULE 13G/A 3, 144 2, 3/A 2, 424B5 2, S-3ASR 2, S-8 2, 424B3 1, 5/A 1, EFFECT 1, FWP 1, PRE 14A 1, S-4 1, SC 13D 1, SCHEDULE 13D/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-29 | 17:05 ET | [8-K](/filings/0001193125-26-438002.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-438002 |
| 2026-10-29 | 08:48 ET | [10-Q](/filings/0001282637-26-000020.md) | Quarterly report, period 2026-09-30 | 0001282637-26-000020 |
| 2026-10-28 | 17:12 ET | [8-K](/filings/0001282637-26-000019.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-26-000019 |
| 2026-08-13 | 17:05 ET | [8-K](/filings/0001193125-26-349568.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-349568 |
| 2026-07-30 | 08:42 ET | [10-Q](/filings/0001282637-26-000016.md) | Quarterly report, period 2026-06-30 | 0001282637-26-000016 |
| 2026-07-29 | 17:17 ET | [8-K](/filings/0001282637-26-000015.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-26-000015 |
| 2026-04-23 | 17:05 ET | [8-K](/filings/0001193125-26-173975.md) | 5.07 Shareholder vote results; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-173975 |
| 2026-04-23 | 08:53 ET | [10-Q](/filings/0001282637-26-000009.md) | Quarterly report, period 2026-03-31 | 0001282637-26-000009 |
| 2026-04-22 | 17:13 ET | [8-K](/filings/0001282637-26-000008.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-26-000008 |
| 2026-03-12 | 06:06 ET | [DEF 14A](/filings/0001193125-26-102973.md) | Proxy statement, period 2026-04-23 | 0001193125-26-102973 |
| 2026-02-26 | 17:05 ET | [8-K](/filings/0001193125-26-077261.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-077261 |
| 2026-02-26 | 17:00 ET | [8-K](/filings/0001193125-26-077235.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-26-077235 |
| 2026-02-18 | 17:10 ET | [8-K](/filings/0001193125-26-057420.md) | 5.02 Departure or appointment of officers or directors | 0001193125-26-057420 |
| 2026-02-12 | 12:13 ET | [10-K](/filings/0001282637-26-000005.md) | Annual report, period 2025-12-31 | 0001282637-26-000005 |
| 2026-02-11 | 17:26 ET | [8-K](/filings/0001282637-26-000003.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-26-000003 |
| 2026-01-07 | 17:50 ET | [SCHEDULE 13D/A](/filings/0001193125-26-006618.md) | Ownership report, active investor, amended | 0001193125-26-006618 |
| 2025-12-09 | 16:32 ET | [8-K](/filings/0001193125-25-312832.md) | 5.02 Departure or appointment of officers or directors | 0001193125-25-312832 |
| 2025-11-05 | 17:01 ET | [8-K](/filings/0001193125-25-267201.md) | 5.02 Departure or appointment of officers or directors | 0001193125-25-267201 |
| 2025-10-31 | 09:23 ET | [10-Q](/filings/0001282637-25-000024.md) | Quarterly report, period 2025-09-30 | 0001282637-25-000024 |
| 2025-10-30 | 17:27 ET | [8-K](/filings/0001282637-25-000023.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-25-000023 |
| 2025-10-30 | 17:05 ET | [8-K](/filings/0001193125-25-258809.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-258809 |
| 2025-08-07 | 17:06 ET | [8-K](/filings/0001193125-25-175561.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-175561 |
| 2025-07-31 | 08:42 ET | [10-Q](/filings/0001282637-25-000016.md) | Quarterly report, period 2025-06-30 | 0001282637-25-000016 |
| 2025-07-30 | 17:23 ET | [8-K](/filings/0001282637-25-000015.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-25-000015 |
| 2025-04-24 | 17:10 ET | [8-K](/filings/0001193125-25-093701.md) | 5.07 Shareholder vote results; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-093701 |
| 2025-04-24 | 09:15 ET | [10-Q](/filings/0001282637-25-000010.md) | Quarterly report, period 2025-03-31 | 0001282637-25-000010 |
| 2025-04-23 | 17:19 ET | [8-K](/filings/0001282637-25-000009.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-25-000009 |
| 2025-03-12 | 06:05 ET | [DEF 14A](/filings/0001193125-25-052416.md) | Proxy statement, period 2025-04-24 | 0001193125-25-052416 |
| 2025-02-27 | 16:43 ET | [8-K](/filings/0001193125-25-039322.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-039322 |
| 2025-02-14 | 08:53 ET | [10-K](/filings/0001282637-25-000004.md) | Annual report, period 2024-12-31 | 0001282637-25-000004 |
| 2025-02-03 | 17:14 ET | [8-K](/filings/0001282637-25-000002.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-25-000002 |
| 2024-12-12 | 17:08 ET | [8-K/A](/filings/0001193125-24-277262.md) | 5.02 Departure or appointment of officers or directors | 0001193125-24-277262 |
| 2024-12-12 | 17:05 ET | [8-K](/filings/0001193125-24-277254.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-277254 |
| 2024-11-27 | 06:31 ET | [SC 13D/A](/filings/0001193125-24-266521.md) | Ownership report, active investor, amended | 0001193125-24-266521 |
| 2024-11-27 | 06:30 ET | [SC 13D/A](/filings/0001193125-24-266520.md) | Ownership report, active investor, amended | 0001193125-24-266520 |
| 2024-10-24 | 17:05 ET | [8-K](/filings/0001193125-24-242955.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-242955 |
| 2024-10-24 | 08:47 ET | [10-Q](/filings/0001282637-24-000021.md) | Quarterly report, period 2024-09-30 | 0001282637-24-000021 |
| 2024-10-23 | 17:16 ET | [8-K](/filings/0001282637-24-000020.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-24-000020 |
| 2024-10-03 | 17:05 ET | [8-K](/filings/0001193125-24-232312.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-24-232312 |
| 2024-08-08 | 17:06 ET | [8-K](/filings/0001193125-24-197075.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-197075 |
| 2024-07-30 | 08:49 ET | [10-Q](/filings/0001282637-24-000017.md) | Quarterly report, period 2024-06-30 | 0001282637-24-000017 |
| 2024-07-29 | 17:24 ET | [8-K](/filings/0001282637-24-000016.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-24-000016 |
| 2024-04-25 | 17:05 ET | [8-K](/filings/0001193125-24-114258.md) | 5.07 Shareholder vote results; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-114258 |
| 2024-04-25 | 09:03 ET | [10-Q](/filings/0001282637-24-000011.md) | Quarterly report, period 2024-03-31 | 0001282637-24-000011 |
| 2024-04-24 | 17:13 ET | [8-K](/filings/0001282637-24-000010.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-24-000010 |
| 2024-03-11 | 06:12 ET | [DEF 14A](/filings/0001193125-24-064258.md) | Proxy statement, period 2024-04-25 | 0001193125-24-064258 |
| 2024-02-28 | 16:18 ET | [8-K/A](/filings/0001282637-24-000007.md) | 9.01 Financial statements and exhibits | 0001282637-24-000007 |
| 2024-02-22 | 17:09 ET | [8-K](/filings/0001193125-24-042947.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-042947 |
| 2024-02-15 | 10:14 ET | [10-K](/filings/0001282637-24-000005.md) | Annual report, period 2023-12-31 | 0001282637-24-000005 |
| 2024-01-31 | 17:09 ET | [8-K](/filings/0001282637-24-000002.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001282637-24-000002 |

Page 1 of 7. [Older](/companies/neu/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 29, 2026, 19:40 ET. No prices; not investment advice.