SCHEDULE 13G/A

ALX Oncology Holdings, Inc.

Common Stock, par value $0.001 per share · CUSIP: 00166B105

Event date: 2025-03-31

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

• TANG CAPITAL MANAGEMENT, LLC

  Shares: 3,158,265.00 · Class: 5.9%

• KEVIN TANG

  Shares: 3,158,265.00 · Class: 5.9%

• TANG CAPITAL PARTNERS, LP

  Shares: 1,722,175.00 · Class: 3.2%

• TANG CAPITAL PARTNERS INTERNATIONAL, LP

  Shares: 1,436,090.00 · Class: 2.7%

• TANG CAPITAL PARTNERS III, INC

  Shares: 0.00 · Class: 0.0%

• TANG CAPITAL PARTNERS IV, INC

  Shares: 0.00 · Class: 0.0%

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