Companies / Upstream Bio, Inc. / Activity
Activity — Upstream Bio, Inc.
54 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q4 2025 as of | Barclays PLC 13F manager | Add | Common Stock | $11.92M | +439K +514.78% | 524,499 0.96% of shares | medium |
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | Exit | Common Stock | $-41.42M | -1.5M -100.00% | 0 | medium |
| Q4 2025 as of | Norges Bank 13F manager | Add | Common Stock | $51.93M | +1.9M +197.21% | 2,882,647 5.26% of shares | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common Stock | $-78.26M | -2.9M -100.00% | 0 | high |