Exhibit 99.1
NEWMARKET CORPORATION DECLARES QUARTERLY DIVIDEND
Richmond, VA, October 26, 2023 - The Board of Directors of NewMarket Corporation (NYSE: NEU) declared a quarterly dividend in the amount of $2.25 per
share on the common stock of the Corporation. The dividend is payable January 2, 2024, to NewMarket shareholders of record at the close of business on December 15, 2023.
NewMarket Corporation, through its subsidiaries Afton Chemical Corporation and Ethyl Corporation, develops, manufactures, blends, and delivers chemical
additives that enhance the performance of petroleum products. From custom-formulated additive packages to market-general additives, the NewMarket family of companies provides the world with the technology to make engines run smoother, machines last
longer, and fuels burn cleaner.
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 such as the COVID-19 pandemic; 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 future acquisitions, or our inability to successfully integrate future 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, 2022, which is available to shareholders upon request.