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NEWMARKET CORP — All Filings

1,000 total filings on record

Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.

Overview All Filings Financials Insiders
All 10-K 10-Q 11-K 144 3 3/A 4 4/A 424B3 424B5 5 5/A 8-A12B 8-K 8-K/A ARS CERTNYS CORRESP DEF 14A DEFA14A EFFECT FWP PRE 14A S-3ASR S-4 S-4/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D/A SCHEDULE 13G/A SD UPLOAD
Form Description Accession Number Filed Period
SCHEDULE 13G/A 0000102909-26-001937 Mar 27, 2026
ARS ARS 0001193125-26-102979 Mar 12, 2026 Dec 31, 2025
DEFA14A DEFA14A 0001193125-26-102977 Mar 12, 2026
DEF 14A DEF 14A 0001193125-26-102973 Mar 12, 2026 Apr 23, 2026
8-K 8-K 0001193125-26-077261 Feb 26, 2026
8-K 8-K 0001193125-26-077235 Feb 26, 2026
4 4 0001193125-26-071771 Feb 25, 2026 Feb 24, 2026
3 3 0001193125-26-061528 Feb 20, 2026 Feb 18, 2026
4 4 0001193125-26-061513 Feb 20, 2026 Feb 19, 2026
4 4 0001193125-26-061459 Feb 20, 2026 Feb 18, 2026
4 4 0001193125-26-061458 Feb 20, 2026 Feb 18, 2026
8-K 8-K 0001193125-26-057420 Feb 18, 2026
10-K FORM 10-K 0001282637-26-000005 Feb 12, 2026 Dec 31, 2025
8-K 8-K 0001282637-26-000003 Feb 11, 2026
4 4 0001193125-26-042886 Feb 9, 2026 Feb 5, 2026
4 4 0001193125-26-042885 Feb 9, 2026 Feb 5, 2026
4 4 0001193125-26-042883 Feb 9, 2026 Feb 5, 2026
4 4 0001193125-26-042882 Feb 9, 2026 Feb 5, 2026
SCHEDULE 13D/A 0001193125-26-006618 Jan 7, 2026
8-K 8-K 0001193125-25-312832 Dec 9, 2025
4 4 0001193125-25-312814 Dec 9, 2025 Sep 18, 2025
4 4 0001193125-25-297729 Nov 25, 2025 Jun 27, 2025
8-K 8-K 0001193125-25-267201 Nov 5, 2025 Oct 31, 2025
10-Q 10-Q 0001282637-25-000024 Oct 31, 2025 Sep 30, 2025
8-K 8-K 0001282637-25-000023 Oct 30, 2025
8-K 8-K 0001193125-25-258809 Oct 30, 2025
4 4 0000950170-25-113241 Sep 5, 2025
4 4 0000950170-25-112851 Sep 3, 2025 Aug 25, 2025
SCHEDULE 13G/A 0001398344-25-015406 Aug 14, 2025
8-K 8-K 0001193125-25-175561 Aug 7, 2025
10-Q 10-Q 0001282637-25-000016 Jul 31, 2025 Jun 30, 2025
8-K 8-K 0001282637-25-000015 Jul 30, 2025
SCHEDULE 13G/A 0000932471-25-000974 Jul 29, 2025
4 4 0000950170-25-092290 Jul 1, 2025
4 4 0000950170-25-092288 Jul 1, 2025
4 4 0000950170-25-092287 Jul 1, 2025
4 4 0000950170-25-092286 Jul 1, 2025
4 4 0000950170-25-092285 Jul 1, 2025
11-K FORM 11-K 0001282637-25-000012 May 22, 2025 Dec 31, 2024
4 4 0000950170-25-075818 May 21, 2025 May 20, 2025
4 4 0000950170-25-071534 May 14, 2025 May 12, 2025
144 0000950170-25-071371 May 14, 2025
8-K 8-K 0001193125-25-093701 Apr 24, 2025
4 4 0000950170-25-058160 Apr 24, 2025 Apr 22, 2025
4 4 0000950170-25-058135 Apr 24, 2025 Apr 22, 2025
10-Q 10-Q 0001282637-25-000010 Apr 24, 2025 Mar 31, 2025
8-K 8-K 0001282637-25-000009 Apr 23, 2025
ARS ARS 0001193125-25-052433 Mar 12, 2025 Dec 31, 2024
DEFA14A DEFA14A 0001193125-25-052429 Mar 12, 2025
DEF 14A DEF 14A 0001193125-25-052416 Mar 12, 2025 Apr 24, 2025