ChampionX Corporation

2445 Technology Forest Boulevard

Building 4, 12th Floor

The Woodlands, Texas 77381

October 24, 2024

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Re: Notice of Disclosure Filed in Exchange Act Quarterly Report Under Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Exchange Act

Ladies and Gentlemen:

Notice is hereby provided that ChampionX Corporation’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2024, which was filed with the U.S. Securities and Exchange Commission on October 24, 2024, contains information required to be disclosed by Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities Exchange Act of 1934.

Sincerely,

ChampionX Corporation

/s/ Julia Wright

Julia Wright

Senior Vice President, General Counsel and Secretary