SCHEDULE 13G

Compass Therapeutics Inc

Common Stock, par value $0.0001 per share · CUSIP: 20454B104

Event date: 2025-09-30

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

• Vivo Opportunity Fund Holdings, L.P.

  Shares: 8,995,979.00 · Class: 5.1%

• Vivo Opportunity, LLC

  Shares: 8,995,979.00 · Class: 5.1%

• Vivo Opportunity Cayman Fund, L.P.

  Shares: 549,487.00 · Class: 0.3%

• Vivo Opportunity Cayman, LLC

  Shares: 549,487.00 · Class: 0.3%

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