United States · 
Who invested in Onyx Bio?
Onyx Bio's investors include Haystack.
United States · Venture startup
Who invested in Onyx Bio
Funding summaryUpdated 26 Oct 2026
$8.0Mraised across 1 round since 2026, from 1 source
- Latest round
- Venture, $8.0MFeb 2026
- Investors
- 1
The rounds
- Feb 2026
Founders and team
From Onyx Bio's own website: 2 founders.
Roger ChenCo-Founder and Chief Executive Officer
Amit LakhaniCo-Founder and Chief Technology Officer
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Onyx Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Onyx Bio
How much has Onyx Bio raised?
Onyx Bio has raised $8.0M across 1 round since 2026.
When did Onyx Bio last raise?
Onyx Bio's most recent round was a Venture of $8.0M in Feb 2026.
What was Onyx Bio's biggest round?
Its most recent round, $8.0M in Feb 2026, is also its largest on record.
Who backed Onyx Bio first?
Onyx Bio's first round on record, in Feb 2026, was backed by Haystack.
What stage is Onyx Bio at?
Onyx Bio's latest named round is a Venture, in Feb 2026.
Where is Onyx Bio based?
Onyx Bio is based in the United States.
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In the same sector, and raised in the last eighteen months.
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