SCHEDULE 13G

CytomX Therapeutics Inc

Common Stock, $0.00001 par value per share · CUSIP: 23284F105

Event date: 2025-05-13

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

• Venrock Healthcare Capital Partners III, L.P.

  Shares: 12,992,500.00 · Class: 8.2%

• VHCP Co-Investment Holdings III, LLC

  Shares: 12,992,500.00 · Class: 8.2%

• Venrock Healthcare Capital Partners EG, L.P.

  Shares: 12,992,500.00 · Class: 8.2%

• VHCP Management III, LLC

  Shares: 12,992,500.00 · Class: 8.2%

• VHCP Management EG, LLC

  Shares: 12,992,500.00 · Class: 8.2%

• Nimish Shah

  Shares: 12,992,500.00 · Class: 8.2%

• Bong Y Koh

  Shares: 12,992,500.00 · Class: 8.2%

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