Pfizer Doesn’t Back Down From a Fight for Metsera – Merger Arbitrage Mondays

Nov 03, 2025

∙ Paid

Metsera, Inc. (MTSR): $63.04

Market Cap: $6.62B

Pfizer Deal Size: $4.9B

Novo Offer Size: $6B

In a week that saw 11 new deals and one terminated one, it is an existing deal with a new twist that caught our attention.

We’re talking about the acquisition of obesity-focused biotech Metsera by Pfizer (PFE), and how Novo Nordisk (NVO) entered the fray to hijack Pf…

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