Power of Attorney for James B. Bucher at Zentalis Pharmaceuticals, Inc.

The filing is a Power of Attorney document for James B. Bucher, the Chief Legal Officer of Zentalis Pharmaceuticals, Inc. The document was signed on September 22, 2025, and reports the period ending September 18, 2025. James B. Bucher is identified as an officer of the company, holding the title of Chief Legal Officer. The filing indicates that no securities are owned by the reporting owner. This document is a standard legal requirement for corporate officers to authorize actions on behalf of the company.