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Newmarket Corp. SEC filings

In the twelve months since 9 October 2025 Newmarket Corp. filed 20 documents with the SEC of the kinds listed here: 12 current reports (8-K), about 4 other events; 4 results of operations; 4 officer or director change; 1 shareholder vote; 3 quarterly reports (10-Q), 1 employee plan annual report (11-K), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A), 1 annual report (10-K). The latest, filed 13 August 2026: 8-K, other events.

FiledFormWhat it was aboutPeriod or event dateFiling
13 August 20268-KOther events13 August 2026EDGAR
30 July 202610-Qquarterly report30 June 2026EDGAR
29 July 20268-KResults of operations29 July 2026EDGAR
18 May 202611-Kemployee plan annual report31 December 2025EDGAR
23 April 202610-Qquarterly report31 March 2026EDGAR
23 April 20268-KShareholder vote, Other events23 April 2026EDGAR
22 April 20268-KResults of operations22 April 2026EDGAR
12 March 2026ARSannual report to shareholders31 December 2025EDGAR
12 March 2026DEFA14Aadditional proxy materialEDGAR
12 March 2026DEF 14Aproxy statement23 April 2026EDGAR
26 February 20268-KOther events26 February 2026EDGAR
26 February 20268-KOfficer or director change26 February 2026EDGAR
18 February 20268-KOfficer or director change18 February 2026EDGAR
12 February 202610-Kannual report31 December 2025EDGAR
11 February 20268-KResults of operations11 February 2026EDGAR
9 December 20258-KOfficer or director change9 December 2025EDGAR
5 November 20258-KOfficer or director change31 October 2025EDGAR
31 October 202510-Qquarterly report30 September 2025EDGAR
30 October 20258-KResults of operations30 October 2025EDGAR
30 October 20258-KOther events30 October 2025EDGAR
An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened.
Read moreForm 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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