SCHEDULE 13G/A

CytomX Therapeutics Inc

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

Event date: 2025-06-30

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

• BIOTECHNOLOGY VALUE FUND L P

  Shares: 6,148,026.00 · Class: 3.8%

• BVF I GP LLC

  Shares: 6,148,026.00 · Class: 3.8%

• BIOTECHNOLOGY VALUE FUND II LP

  Shares: 4,702,892.00 · Class: 2.9%

• BVF II GP LLC

  Shares: 4,702,892.00 · Class: 2.9%

• Biotechnology Value Trading Fund OS LP

  Shares: 541,232.00 · Class: 0.3%

• BVF Partners OS Ltd.

  Shares: 541,232.00 · Class: 0.3%

• BVF GP HOLDINGS LLC

  Shares: 10,850,918.00 · Class: 6.4%

• BVF PARTNERS L P/IL

  Shares: 11,538,462.00 · Class: 6.8%

• BVF INC/IL

  Shares: 11,538,462.00 · Class: 6.8%

• LAMPERT MARK N

  Shares: 11,538,462.00 · Class: 6.8%

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