Phillip Samayoa - 31 Oct 2025 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF SCIENTIFIC OFFICER
Signature
/s/ Shawna-Gay White, Attorney-in-Fact
Issuer symbol
GBIO
Transactions as of
31 Oct 2025
Transactions value $
$0
Form type
4
Filing time
31 Oct 2025, 16:05:08 UTC
Previous filing
17 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Samayoa Phillip CHIEF SCIENTIFIC OFFICER C/O GENERATION BIO CO., 301 BINNEY STREET, SUITE 401, CAMBRIDGE /s/ Shawna-Gay White, Attorney-in-Fact 31 Oct 2025 0001946316

Phillip Samayoa is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Remarks:

The reporting person will no longer serve as Generation Bio Co.'s chief scientific officer effective October 31, 2025. As a result, the reporting person is no longer subject to Section 16 in connection with his transactions in the equity securities of Generation Bio Co. and therefore will no longer report any such transactions on Form 4 or Form 5.