NORGES BANK - 30 Sep 2025 SCHEDULE 13G Report for Upstream Bio Inc Common Stock (UPB)

Filing Manager: NORGES BANK
Reporting Manager: Norges Bank
Security: Upstream Bio Inc Common Stock
Symbol: UPB
Shares outstanding: 54.4M shares
Disclosed Ownership: 2.88M shares
Ownership: 5.3%
Form type: SCHEDULE 13G
Filing time: 24 Oct 2025, 16:48:13 UTC
Date of event: 30 Sep 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Norges Bank	5.3%	2.88M	2.88M	0	Aya Sobhy	Business and Regulatory Compliance