Who invested in Attralus?
Attralus's investors include Janus Henderson Investors, Vivo Capital, Redmile Group and Samsara BioCapital.

United States · Series B startup
Funding summaryUpdated 26 Oct 2026
$56Mraised across 1 round since 2024, from 1 source
Source recordedSEC filing: $56M sold, first sale Jan 2024
From Attralus's own website and the SEC filings it signed: 8 on the team.
On the board, as filediAlex DennerCorey GoodmanJake BauerNancy Miller-RichRahul KakkarRichard Gaster
Attralus's investors include Janus Henderson Investors, Vivo Capital, Redmile Group and Samsara BioCapital.
Attralus has raised $56M across 1 round since 2024.
Attralus's most recent round was a Series B of $56M in Feb 2024.
Its most recent round, $56M in Feb 2024, is also its largest on record.
Attralus's first round on record, in Feb 2024, was backed by Janus Henderson Investors, Vivo Capital and Redmile Group and 1 others.
Attralus's latest named round is a Series B, in Feb 2024.
Attralus is based in the United States.
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