United States · Series B startup
One round we have observed, with the 10 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
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Funding summaryUpdated 5 Nov 2026
$600Mraised across 1 round since 2025, from 3 sources
From Kailera Therapeutics's own website: 8 on the team.
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Kailera Therapeutics's investors include Bain Capital Private Equity, Atlas Venture, Janus Henderson Investors, RTW Investments LLC and Adage Capital Management, and 5 more on record. Bain Capital Private Equity led its latest round.
Kailera Therapeutics has raised $600M across 1 round since 2025.
Kailera Therapeutics's most recent round was a Series B of $600M in Oct 2025, led by Bain Capital Private Equity.
Its most recent round, $600M in Oct 2025, is also its largest on record.
Kailera Therapeutics's first round on record, in Oct 2025, was backed by Bain Capital Private Equity, Atlas Venture and Janus Henderson Investors and 7 others.
Kailera Therapeutics's latest named round is a Series B, in Oct 2025.
Kailera Therapeutics is based in the United States.
Bain Capital Private Equity led the Series B in 2025.
In the same sector, and raised in the last eighteen months.
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