SCHEDULE 13G/A

ITEOS THERAPEUTICS INC

Common Stock, $0.001 par value per share · CUSIP: 46565G104

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

• BIOTECHNOLOGY VALUE FUND L P

  Shares: 1,581,479.00 · Class: 4.1%

• BVF I GP LLC

  Shares: 1,581,479.00 · Class: 4.1%

• BIOTECHNOLOGY VALUE FUND II LP

  Shares: 1,274,937.00 · Class: 3.3%

• BVF II GP LLC

  Shares: 1,274,937.00 · Class: 3.3%

• Biotechnology Value Trading Fund OS LP

  Shares: 159,390.00 · Class: 0.4%

• BVF Partners OS Ltd.

  Shares: 159,390.00 · Class: 0.4%

• BVF GP HOLDINGS LLC

  Shares: 2,856,416.00 · Class: 7.5%

• BVF PARTNERS L P/IL

  Shares: 3,075,000.00 · Class: 8.1%

• BVF INC/IL

  Shares: 3,075,000.00 · Class: 8.1%

• LAMPERT MARK N

  Shares: 3,075,000.00 · Class: 8.1%

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