Quick Takeaways
- HBM Healthcare Investments (Cayman) Ltd. filed SCHEDULE 13G/A for Upstream Bio, Inc. Common Stock, par value $0.001 per share (UPB).
- Disclosed ownership: 4.1%.
- Date of event: 30 Sep 2025.
HBM Healthcare Investments (Cayman) Ltd. - 30 Sep 2025 SCHEDULE 13G/A Report for Upstream Bio, Inc. Common Stock, par value $0.001 per share (UPB)
- Filing Manager
- HBM Healthcare Investments (Cayman) Ltd.
- Reporting Manager
- HBM Healthcare Investments (Cayman) Ltd.
- Symbol
- UPB
- Shares outstanding
- 53,539,293 shares
- Disclosed Ownership
- 2,195,111 shares
- Ownership
- 4.1%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 Nov 2025, 16:05:34 UTC
- Date of event
- 30 Sep 2025
- Previous filing
- 13 Feb 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"HBM Healthcare Investments (Cayman) Ltd. disclosed 4.1% ownership in Upstream Bio, Inc. Common Stock, par value $0.001 per share (UPB) on 30 Sep 2025."
What Changed
- Previous schedule filing date: 13 Feb 2025.
- Current filing was accepted on 14 Nov 2025, 16:05.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| HBM Healthcare Investments (Cayman) Ltd. | 4.1% | 2,195,111 | 2,195,111 | 0 | /s/ Jean-Marc LeSieur | Jean-Marc LeSieur, Managing Director |