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AI brief of an SEC Form 8-K · NewMarket (NEU)

NewMarket Controller Ann Pietrantoni resigns; CFO Fitzgerald to serve as interim principal accounting officer

Neutral Impact 3 of 5 leadership Written later

NewMarket said its Controller and Principal Accounting Officer, Ann P. Pietrantoni, is resigning to pursue other opportunities, with her last day set for November 26, 2025. The company said the resignation does not involve any dispute or disagreement over its operations, policies or practices. Chief Financial Officer Timothy K. Fitzgerald will serve as interim principal accounting officer, a change that bears on financial reporting oversight.

Key points

  • Ann P. Pietrantoni, Controller and Principal Accounting Officer, gave notice on October 31, 2025
  • Her last day with the company will be November 26, 2025
  • Timothy K. Fitzgerald, Vice President and CFO, will become interim principal accounting officer
  • The filing states the resignation was not due to any disagreement on operations, policies or practices

The filing

CompanyNewMarket (NEU)
Form8-K, current report
Filed with the SECNov 5, 2025, 5:01 PM ET
Accession number0001193125-25-267201

Items reported: 5.02 Director / Officer Change

Read the filing on SEC.gov ↗

Written by AI on Nov 8, 2026, 12:59 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on November 05, 2025.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.