On August 6, 2015, NewMarket Corporation announced that its board of directors has appointed H. Hiter Harris, III to the Board of Directors, effective as of August 7, 2015. Mr. Harris was also appointed to the Audit Committee and the Compensation Committee. Mr. Harris will serve as a Director of the company until the company's 2016 annual meeting of shareholders, at which time it is expected that he will stand for election.

On August 6, 2015, the company announced that after 13 years of dedicated service, Steven M. Edmonds, Vice President and General Counsel, intends to retire on March 31, 2016. The company also announced that M. Rudolph West, Assistant General Counsel and Secretary, will succeed Mr. Edmonds as Vice President and General Counsel of the company, effective January 1, 2016. At such time, Mr. Edmonds will continue to serve as a Vice President of the company until his retirement.