NEWMARKET CORP 8-K

What Happened NewMarket Corporation filed a Form 8-K (Item 5.02) on February 18, 2026 announcing the appointment of Susan M. Ridlehoover as Principal Accounting Officer, effective immediately. Ridlehoover, age 45, joined NewMarket as Controller in January 2026 and is a licensed CPA in the Commonwealth of Virginia.

Key Details

• Appointment effective date: February 18, 2026 (filed on the same date).
• Compensation: base salary of $235,000; eligible for cash bonuses and restricted stock awards; participation in the company’s health, pension and other benefit programs.
• Experience: joined NewMarket as Controller in January 2026; previously Senior Director, Corporate Controller at Sonoco Products Company (joined Sonoco Jan 2023); held accounting roles at Dominion Energy (2015–2022); spent 10 years at Ernst & Young in assurance services.
• Age and credentials: 45 years old; licensed Certified Public Accountant (Virginia).

Why It Matters This filing reports a senior accounting leadership change that affects NewMarket’s financial reporting chain of command. Investors should note the appointment of an experienced, CPA-licensed accounting executive with industry and big-four background, the timing (immediate) and the compensation package, which aligns incentives through salary, bonus and equity.