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Zentalis Pharmaceuticals Appoints James B. Bucher, JD, as Chief Legal Officer and Corporate Secretary

Zentalis Pharmaceuticals (ZNTL) | August 26, 2025

By Paula Scott

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Zentalis Pharmaceuticals announces the appointment of James B. Bucher, JD, as Chief Legal Officer and Corporate Secretary.

Mr. Bucher brings over 30 years of legal experience in the life sciences sector, with expertise in corporate strategy, governance, and transactions.

This appointment follows the departure of Andrea Paul, Zentalis' previous Chief Legal Officer, who will be joining a large law firm.

Experience in Life Sciences

James B. Bucher has significant experience in corporate governance, capital raising, securities law compliance, and mergers and acquisitions in the life sciences sector.

Previous Roles

Before joining Zentalis Pharmaceuticals, Mr. Bucher served as Chief Legal Officer at Harpoon Therapeutics and held executive positions at Eliem Therapeutics and Alder Biopharmaceuticals.

Legal Expertise

Mr. Bucher's legal expertise includes leading transactions, supporting product launches, and overseeing significant acquisitions in the pharmaceutical industry.

  • The appointment of James B. Bucher adds a seasoned legal executive to Zentalis Pharmaceuticals' leadership team.
  • His extensive experience in life sciences transactions and public company matters is expected to support the company's strategic initiatives and growth in clinical development.

Zentalis Pharmaceuticals is poised for continued success in advancing azenosertib in ovarian cancer treatments with the addition of James B. Bucher as Chief Legal Officer and Corporate Secretary.