Upstream Bio, Inc. UPB
CIK 0002022626
Form 3 statements with an event date from Sep 1, 2023 to Sep 25, 2026.
Where insider ownership starts.
Form 3 is an initial ownership statement filed when someone becomes a reporting insider. These holdings do not mean they bought shares that day.
| Holdings date | Insider | Initial holdings | |
|---|---|---|---|
| 2024-12-16 | Ambrose Allison General Counsel | No securities reported | ▾ |
| 2024-10-10 | Sutherland Everett Rand Chief Executive Officer · Director | 2 derivative holdings | ▾ |
| 2024-10-10 | Chimovits Erez Director · 10% owner | 2 stock holdings · 4 derivative holdings | ▾ |
| 2024-10-10 | Beckman Daniella Director | No securities reported | ▾ |
| 2024-10-10 | Houghton Adam Chief Business Officer | 5 derivative holdings | ▾ |
| 2024-10-10 | Ruddy Marcella K. Director | 3 derivative holdings | ▾ |
| 2024-10-10 | Ratcliffe Liam Director | No securities reported | ▾ |
| 2024-10-10 | Deykin Aaron Chief Medical Officer | 5 derivative holdings | ▾ |
| 2024-10-10 | Fleming Harold Edward Director | No securities reported | ▾ |
| 2024-10-10 | ORBIMED ADVISORS LLC · OrbiMed Israel GP II, L.P. · OrbiMed Advisors Israel II Ltd · OrbiMed Capital GP VIII LLC Director · 10% owner / Director · 10% owner / Director · 10% owner / Director · 10% owner | 2 stock holdings · 4 derivative holdings | ▾ |
| 2024-10-10 | Renaud Ronald C JR Director | 5 derivative holdings | ▾ |
| 2024-10-10 | GRAY MICHAEL CFO and COO | 2 derivative holdings | ▾ |
| 2024-10-10 | Blavatnik Len · Access Industries Holdings LLC · ACCESS INDUSTRIES MANAGEMENT, LLC · AI Biotechnology LLC · AI Upstream LLC 10% owner / 10% owner / 10% owner / 10% owner / 10% owner | 2 derivative holdings | ▾ |
Showing 13 / 13 statements in 2024. The complete set is available through the API.
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