Ambrose Allison

EDGAR CIK 0002047381

Upstream Bio, Inc. - UPB

  1. Manufacturing
  2. Chemicals
  3. Pharmaceutical Preparations
Officer
General Counsel
Direct Buys
0
$0
0 Shares
Direct Sells
1
($4,413)
-475 Shares
Indirect Buys
0
$0
0 Shares
Indirect Sells
0
$0
0 Shares
Monthly Values

Transaction Filed Type Shares @ Price Value Balance ( Change % ) Ownership
03/16/2026
03/17/2026
Sell
-475 @ $9.29
 ($4,413) 16,525 (-2.79%) Direct