Schedule 13G ownership disclosure
Upstream Bio Inc
Common Stock, par value $0.001 per share · CUSIP: 91678A107
Event date: 2025-09-30
- Filing-level shares
- 2,195,111.00
- Percent of class
- 4.1%
- HBM Healthcare Investments (Cayman) Ltd.
Shares: 2,195,111.00 · Class: 4.1%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0001104659-25-112485
- Form type
- SCHEDULE 13G/A
- Filer
- HBM Healthcare Investments (Cayman) Ltd.
- CIK
- CIK 1232258
- Filed
- Nov 14, 2025
- Reporting period
- Sep 30, 2025
- Description
- Schedule 13G beneficial ownership