VANGUARD GROUP INC - 30 Sep 2025 SCHEDULE 13G Report for Metsera Inc Common Stock (MTSR)

Filing Manager
VANGUARD GROUP INC
Reporting Manager
The Vanguard Group
Security
Metsera Inc Common Stock
Symbol
MTSR
Shares outstanding
105,334,412 shares
Disclosed Ownership
5,824,993 shares
Ownership
5.5%
Form type
SCHEDULE 13G
Filing time
31 Oct 2025, 11:05:39 UTC
Date of event
30 Sep 2025
SEC
View on sec.gov

Quoteable Key Fact

"VANGUARD GROUP INC disclosed 5.5% ownership in Metsera Inc Common Stock (MTSR) on 30 Sep 2025."

Quick Takeaways

  • VANGUARD GROUP INC filed SCHEDULE 13G for Metsera Inc Common Stock (MTSR).
  • Disclosed ownership: 5.5%.
  • Date of event: 30 Sep 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 31 Oct 2025, 11:05.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
The Vanguard Group 5.5% 5,824,993 0 403,600 Ashley Grim Head of Global Fund Administration