United Kingdom · 
Who invested in Actithera?
Actithera's investors include Sofinnova Partners, M/VENTURES, Hadean Ventures, 4BIO Capital and Innovestor, and 5 more on record. Sofinnova Partners led its latest round.
United Kingdom · Series A startup
Who invested in Actithera
Funding summaryUpdated 26 Oct 2026
$76Mraised across 1 round since 2025, from 1 source
- Latest round
- Series A, $76MJul 2025
- Led by
- Sofinnova Partners and M/VENTURESand 2 more
- Investors
- 10 (4 led)
The rounds
- Jul 2025
Everyone who backed them
Innovestor Life Science FundVC firm1round
Arkin Bio Ventures IIVC firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Actithera
How much has Actithera raised?
Actithera has raised $76M across 1 round since 2025.
When did Actithera last raise?
Actithera's most recent round was a Series A of $76M in Jul 2025, led by Sofinnova Partners.
What was Actithera's biggest round?
Its most recent round, $76M in Jul 2025, is also its largest on record.
Who backed Actithera first?
Actithera's first round on record, in Jul 2025, was backed by Sofinnova Partners, M/VENTURES and Hadean Ventures and 7 others.
What stage is Actithera at?
Actithera's latest named round is a Series A, in Jul 2025.
Where is Actithera based?
Actithera is based in the United Kingdom.
Who led Actithera's rounds?
Sofinnova Partners led the Series A in 2025.
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