Upstream Bio, Inc. · NASDAQ:UPB
BlackRock, Inc. reported a 5.20% stake in Upstream Bio, Inc. (Schedule 13G)
Event Jun 30, 2026 · Filed Jul 30, 2026
BlackRock, Inc. reported a 5.20% stake in Upstream Bio, Inc., 2,814,714 shares, as a passive investor on Jun 30, 2026. Filed Jul 30, 2026 (Schedule 13G).
- Stake
- 5.20%
- Shares
- 2,814,714
- Intent
- Passive
- What changed
- Crossed above 5%
The filing in full
| Holder | Stake | Shares |
|---|---|---|
| BlackRock, Inc. | 5.20% | 2,814,714 |