Power of Attorney for Frank Sluis

This filing concerns a Power of Attorney granted by Frank Sluis, CFO of On Holding AG, to Steven Mendez, Antonios Pothoulakis, Matthew Rosi, and Zlatina Iliev. The attorneys-in-fact are authorized to execute and file all necessary SEC filings, including Forms 3, 4, and 5, related to Sluis's transactions in the company's securities. This authorization is necessary for Sluis to comply with Section 16(a) of the Securities Exchange Act of 1934. The Power of Attorney remains in effect until Sluis is no longer required to file these reports or until it is revoked. Frank Sluis signed the document on May 4, 2026, and Zlatina Iliev executed the filing on May 7, 2026, as his Attorney-in-Fact. The filing also notes that the Reporting Person, Frank Sluis, does not beneficially own any securities of the Issuer as of the report date.