Quick Takeaways
- FMR LLC filed SCHEDULE 13G/A for UPSTREAM BIO INC COMMON STOCK (UPB).
- Disclosed ownership: 15%.
- Date of event: 30 Jun 2025.
FMR LLC - 30 Jun 2025 SCHEDULE 13G/A Report for UPSTREAM BIO INC COMMON STOCK (UPB)
- Filing Manager
- FMR LLC
- Reporting Manager
- FMR LLC
- Security
- UPSTREAM BIO INC COMMON STOCK
- Symbol
- UPB
- Shares outstanding
- 53,627,570 shares
- Disclosed Ownership
- 7,936,880 shares
- Ownership
- 15%
- Form type
- SCHEDULE 13G/A
- Filing time
- 06 Aug 2025, 12:19:41 UTC
- Date of event
- 30 Jun 2025
- Previous filing
- 12 Feb 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"FMR LLC disclosed 15% ownership in UPSTREAM BIO INC COMMON STOCK (UPB) on 30 Jun 2025."
What Changed
- Previous schedule filing date: 12 Feb 2025.
- Current filing was accepted on 06 Aug 2025, 12:19.
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 (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| FMR LLC | 15% | 7,936,880 | 7,935,525 | 0 | Richard Bourgelas | Duly authorized under Power of Attorney effective as of May 23, 2023, by and on behalf of FMR LLC and its direct and indirect subsidiaries* | |
| Abigail P. Johnson | 15% | 7,936,880 | 0 | 0 | Richard Bourgelas | Duly authorized under Power of Attorney effective as of May 23, 2023, by and on behalf of Abigail P. Johnson* |