Propel Bio Management, LLC / UPB
Propel Bio Management, LLC’s Upstream Bio Inc Position
Does Propel Bio Management, LLC own Upstream Bio Inc (UPB)? Yes — 341.8K shares worth $3M (+1.95% of its 13F portfolio) as of Q1 2026.
Position Value
$3M
Q1 2026
Shares
341.8K
% of Portfolio
+1.95%
Quarters Held
1
currently held
Position History UPB
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 341.8K | $3M | +1.95% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Propel Bio Management, LLC’s full portfolio or all institutional holders of UPB.