Exhibit 99.1
NEWMARKET CORPORATION INCREASES QUARTERLY DIVIDEND
Richmond, VA, February 22, 2024 - The Board of Directors of NewMarket Corporation (NYSE: NEU) declared a quarterly dividend in the amount of $2.50 per
share on the common stock of the Corporation, an increase of $0.25, or approximately 11%, as compared to the last quarterly dividend of $2.25 per share. The dividend is payable April 1, 2024, to NewMarket shareholders of record at the close of
business on March 15, 2024.
NewMarket Corporation is a holding company operating through its subsidiaries, Afton Chemical Corporation (Afton), Ethyl
Corporation (Ethyl), and American Pacific Corporation (AMPAC). The Afton and Ethyl companies develop, manufacture, blend, and deliver chemical additives that enhance the performance of petroleum products. AMPAC is a manufacturer of specialty
chemicals used in solid rocket motors for the aerospace and defense industries. The NewMarket family of companies has a long-term commitment to its people, to safety, to providing innovative solutions for its customers, and to making the world a
better place.
Some of the information contained in this press release constitutes forward-looking statements within the meaning of the Private Securities
Litigation Reform Act of 1995. Although NewMarket’s management believes its expectations are based on reasonable assumptions within the bounds of its knowledge of its business and operations, there can be no assurance that actual results will
not differ materially from expectations.
Factors that could cause actual results to differ materially from expectations include, but are not limited to,
the availability of raw materials and distribution systems; disruptions at production facilities, including single-sourced facilities; hazards common to chemical businesses; the ability to respond effectively to technological changes in our
industry; failure to protect our intellectual property rights; sudden, sharp, or prolonged raw material price increases; competition from other manufacturers; current and future governmental regulations; the loss of significant customers; failure to
attract and retain a highly-qualified workforce; an information technology system failure or security breach; the occurrence or threat of extraordinary events, including natural disasters, terrorist attacks, wars and health-related epidemics; risks
related to operating outside of the United States; political, economic, and regulatory factors concerning our products; the impact of substantial indebtedness on our operational and financial flexibility; the impact of fluctuations in foreign
exchange rates; resolution of environmental liabilities or legal proceedings; limitation of our insurance coverage; our inability to realize expected benefits from investment in our infrastructure or from acquisitions, or our inability to
successfully integrate acquisitions into our business; the underperformance of our pension assets resulting in additional cash contributions to our pension plans; and other factors detailed from time to time in the reports that NewMarket files with
the Securities and Exchange Commission, including the risk factors in Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2023, which is available to
shareholders upon request.