Investors·2025-10-31 21:26Core Viewpoint - Pfizer has initiated a lawsuit against Novo Nordisk to block its proposed $6.5 billion acquisition of Metsera, claiming that Metsera breached its merger agreement with Pfizer and that Novo's offer is unlikely to succeed due to regulatory risks [1][2]. Group 1: Legal Actions and Claims - Pfizer's lawsuit contends that Metsera violated its obligations under the merger agreement with Pfizer [2]. - The lawsuit argues that Novo Nordisk cannot present a "superior company proposal" because the terms of the Novo transaction are not likely to be completed due to significant regulatory risks [2]. - Pfizer describes Novo's bid as an "illegal attempt" to suppress competition given its dominant market position [2]. Group 2: Market Reactions - Following the news, stocks of Pfizer and Novo Nordisk experienced slight increases, while Metsera's stock fell by 2.1% to $61.69 [2].