Metsera, Inc. — Director's Dealing 2025

Sep 12, 2025

SEC Form 4/A — Form 4/A

Issuer: Metsera, Inc. (MTSR)
CIK: 0002040807
Period of Report: 2025-09-02

Reporting Person: FMR LLC (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-02	Common Stock	J	1107547	—	Acquired	1107547	Indirect

Footnotes

F1: These holdings were acquired or disposed of (as applicable) in the form of a distribution without payment of consideration.

F2: This amendment is being filed to correct the number of shares previously reported as being indirectly acquired by persons and entities whose shares are subject to reporting by the undersigned.