SCHEDULE 13G

Bambusa Therapeutics, Inc.

Common Stock, par value $0.00001 per share · CUSIP: 058937103

Event date: 2026-10-29

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

• ATHOS KG

  Shares: 4,579,067.00 · Class: 9.0%

• Objektgesellschaft Salzufer 1 GmbH

  Shares: 4,579,067.00 · Class: 9.0%

• Salzufer Holding Inc.

  Shares: 4,579,067.00 · Class: 9.0%

• Thomas Maier

  Shares: 4,699,188.00 · Class: 9.2%

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