BlackRock, Inc. - 30 Jun 2025 SCHEDULE 13G/A Report for Generation Bio Co. Common Stock (GBIO)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: Generation Bio Co. Common Stock
Symbol: GBIO
Shares outstanding: 67.8M shares
Disclosed Ownership: 1.15M shares
Ownership: 1.7%
Form type: SCHEDULE 13G/A
Filing time: 17 Jul 2025, 19:54:38 UTC
Date of event: 30 Jun 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	1.7%	1.15M	1.14M	0	Spencer Fleming	Managing Director