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SEC Filing · SCHEDULE 13G

Metsera, Inc.

SEC Filing

Filed Nov 14, 2025Accepted Nov 14, 2025, 5:29 AM ESTCIK 2040807Accession 0001274173-25-000275
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Company context

We are a clinical-stage biotechnology company developing next-generation injectable and oral nutrient stimulated hormone, or NuSH, analog peptides to treat obesity, overweight and related conditions. Obesity and overweight are among the fastest-growing and most prevalent chronic human conditions, affecting approximately 2.5 billion people worldwide, and drive a broad range of severe diseases. Currently approved NuSH analog peptides are a promising treatment option for obesity and overweight. However, the current treatment landscape exhibits several key limitations, including impediments to chronic therapy in large populations, such as administration by weekly injection, prolonged titration and tolerability issues; insufficient weight loss; lack of effective, well-tolerated oral dosing alternatives; and challenges in scaling manufacturing. We have developed and are implementing proprietary methods and platform technologies that we believe will allow us to develop and advance a broad, scalable and combinable portfolio of injectable and oral NuSH analog peptides with the potential to not only address the limitations of approved therapies, but also many of the anticipated limitations of next-generation therapies in development. We use our proprietary MINT peptide library of NuSH analog peptides alongside our Half-life Augmentation by Lipid Optimization, or HALO, half-life extending platform and our MOMENTUM oral NuSH analog peptide delivery platform to deliver highly differentiat

Recent company filings

  1. SCHEDULE 13G/A - filed by JANUS HENDERSON GROUP PLC regarding Metsera, Inc.Feb 17, 2026
  2. 15-12G filingNov 24, 2025
  3. 4 filingNov 14, 2025
  4. SCHEDULE 13D/A - filed by ARCH Venture Fund XII, L.P. regarding Metsera, Inc.Nov 14, 2025
  5. 4 filingNov 13, 2025

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