Kailera Therapeutics reveals $600 million financing for its obesity portfolio

14 October 2025

USA-based Kailera Therapeutics, which is focused on next-generation therapies for the treatment of obesity, today announced a $600 million Series B financing led by new investor Bain Capital Private Equity.

The financing will be fully funded at closing and will support the advancement of Kailera’s leading obesity portfolio, including a global Phase III clinical program of Kailera’s lead candidate KAI-9531, an injectable dual GLP-1/GIP receptor agonist with potentially best-in-category weight loss.

Kailera completed End-of-Phase II meetings with the US Food and Drug Administration (FDA) and plans to initiate its global Phase III program by year end. The Phase III program will include two trials in adults living with obesity or overweight with comorbidities, with and without type 2 diabetes, and an additional trial in adults living with a BMI of 35 or higher.

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