Fmr Llc - 30 Jun 2025 SCHEDULE 13G/A Report for UPSTREAM BIO INC COMMON STOCK (UPB)

Filing Manager
Fmr Llc
Reporting Manager
FMR LLC
Symbol
UPB
Shares outstanding
53.6M shares
Disclosed Ownership
7.94M shares
Ownership
14.8%
Form type
SCHEDULE 13G/A
Filing time
06 Aug 2025, 12:19:41 UTC
Date of event
30 Jun 2025
Previous filing
12 Feb 2025

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
FMR LLC 14.8% 7.94M 7.94M 0 Richard Bourgelas Duly authorized under Power of Attorney effective as of May 23, 2023, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Abigail P. Johnson 14.8% 7.94M 0 0 Richard Bourgelas Duly authorized under Power of Attorney effective as of May 23, 2023, by and on behalf of Abigail P. Johnson*