Disclosure on California Transparency in Supply Chains Act of 2010

NewMarket Corporation (“NewMarket”) together with its subsidiaries, Afton Chemical Corporation and Ethyl Corporation, is firmly opposed to any form of forced labor, human trafficking and slavery.  NewMarket does not condone any such unlawful conduct by its employees, suppliers, service providers and other business partners.  NewMarket has adopted a Policy against Slavery and Human Trafficking.

NewMarket requires that all suppliers and service providers comply with all applicable laws, including those local laws relating to labor practices and forced labor.  In the event that a credible report is received, NewMarket will conduct an investigation and take appropriate action to ensure compliance with local law.

NewMarket will conduct compliance training, including training on the California Transparency in Supply Chains Act of 2010, for its employees who have responsibility for supply chain management.

If you require additional information regarding NewMarket’s Policy or have a concern related to a supplier or service provider’s labor practices, contact the NewMarket Integrity Hotline: 1-800-932-5378 (toll-free in the United States), + 800-932-5378 if you are outside of the United States, or at https://www.compliance-helpline.com/welcomePageNewMarket.jsp. Communication with NewMarket’s Integrity Hotline is confidential.

Slavery and Human Trafficking Statement for Afton Chemical UK Holdings Limited and its subsidiaries

Afton Chemical UK Holdings Limited (“Afton”) and its subsidiaries, as part of the NewMarket corporate group, are firmly opposed to any form of forced labour, child labour, human trafficking and slavery. Afton does not condone any such unlawful conduct by its employees, suppliers, service providers and other business partners. Afton has adopted a Policy against Slavery and Human Trafficking.

Afton requires that all suppliers and service providers comply with all applicable laws, including those local laws relating to labour practices, forced labour and child labour. In the event that a credible report is received, Afton will conduct an investigation and take appropriate action to ensure compliance with local law.

Afton conducts compliance training, including on the prevention of human trafficking, for its employees who have responsibility for supply chain management.

If you require additional information regarding Afton’s Policy or have a concern related to a supplier or service provider’s labour practices, contact the NewMarket Integrity Hotline: 1-800-932-5378 (toll-free in the United States), + 800-932-5378 if you are outside of the United States, or by visiting the website here. Communication with NewMarket’s Integrity Hotline is confidential.

This statement is made pursuant to section 54(1) of the Modern Slavery Act 2015 and constitutes our Group’s slavery and human trafficking statement for the financial year ending 31 December 2022.

CATHERINE MARTIN, SVP GLOBAL BUSINESS & MD, EMEAI

Signing for and on behalf of Afton Chemical UK Holdings Limited and its subsidiaries on 22 May 2023 following approval by the Board of Directors on the same date.