Spain · Series B startup
2 rounds we have observed, with the 12 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 5 months ago
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Funding summaryUpdated 5 Nov 2026
$98Mraised across 2 rounds since 2025, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Merieux Equity PartnersLead
Columbus Venture PartnersLead
Bpifrance
U.S. Venture Partners
Ysios Capital
CDTI
COFIDES
Korys
Asabys Partners
Alta Life SciencesReported by Asabys and 1 other
From Ona Therapeutics's own website: 3 on the team.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
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This firm lists Ona Therapeutics 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.
Ona Therapeutics's investors include Bpifrance, Merieux Equity Partners, Columbus Venture Partners, U.S. Venture Partners and Ysios Capital, and 7 more on record. Merieux Equity Partners led its latest round.
Ona Therapeutics has raised $98M across 2 rounds since 2025.
Ona Therapeutics's most recent round was a Series B of $87M in Jun 2026, led by Merieux Equity Partners.
Its most recent round, $87M in Jun 2026, is also its largest on record.
Ona Therapeutics's first round on record, in Oct 2025, was backed by Bpifrance.
Ona Therapeutics's latest named round is a Series B, in Jun 2026.
Ona Therapeutics is based in Spain.
Merieux Equity Partners led the Series B in 2026.
In the same sector, and raised in the last eighteen months.
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Spain · 
