NEU NewMarket Corporation

Shareholder Meeting Notice and Admission Ticket NewMarket Corporation’s Annual Meeting of Shareholders will be held on April 23, 2020 at the Virginia Museum of History & Culture, 428 N. Boulevard, Richmond, VA at 10:00 a.m. Eastern Daylight Time. Directions to the annual meeting can be found in the proxy statement. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations. The Board of Directors recommends a vote FOR all nominees, FOR Proposal 2 and FOR Proposal 3. 1. Election of Directors. 2. Ratification of the appointment of PricewaterhouseCoopers LLP as the independent registered public accounting firm for the Corporation for the fiscal year ending December 31, 2020. 3. Approval, on an advisory basis, of the compensation of the named executive officers of NewMarket Corporation. 4. In their discretion, the Proxyholders are authorized to vote upon such other business and matters as may properly come before the Annual Meeting. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Admission Ticket (If you plan to attend the Annual Meeting, bring this Admission Ticket with you) NewMarket Corporation Annual Meeting of Shareholders Thursday, April 23, 2020 at 10:00 A.M. Virginia Museum of History & Culture 428 N. Boulevard Richmond, VA 23220 Directions to the annual meeting can be found in the proxy statement. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — Internet – Go to www.envisionreports.com/NEU. Click Cast Your Vote or Request Materials. — Phone – Call us free of charge at 1-866-641-4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials NewMarket Corporation” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by April 13, 2020.