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Pfizer wins bidding war for obesity drug startup

Nov 9, 2025, 5:35pm EST
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Maxim Shemetov/Reuters

US pharma giant Pfizer won a bidding war to acquire obesity drug developer Metsera, beating back an offer from Danish rival Novo Nordisk.

The $10 billion deal — a valuation much higher than Pfizer had originally offered — followed a corporate tiff in which Novo Nordisk tried to hijack Pfizer’s purchase of the American startup, prompting Pfizer to sue. Metsera said Novo’s offer posed antitrust regulatory risks.

The deal marks a win for Pfizer in its efforts to catch up with Eli Lilly and Novo, which makes Ozempic, in the obesity drug market; Pfizer has seen a rapid decline in its COVID-19 business due to lower demand for vaccines and antiviral drugs.

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