SCHEDULE 13G/A

Zentalis Pharmaceuticals, Inc.

Common Stock, $0.001 par value per share · CUSIP: 98943L107

Event date: 2025-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Walters William T

  Shares: 13,509,973.00 · Class: 19.7%

• WALTERS GROUP

  Shares: 13,509,973.00 · Class: 19.7%

• Walters, Susan B.

  Shares: 13,509,973.00 · Class: 19.7%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.