United States · 
Who invested in Sionna Therapeutics?
Sionna Therapeutics's investors include Atlas Venture, OrbiMed, RA Capital Management and Perceptive Advisors.
United States · Series C startup
Who invested in Sionna Therapeutics
Funding summaryUpdated 26 Oct 2026
$182Mraised across 1 round since 2024, from 1 source
- Latest round
- Series C, $182MMar 2024
- Investors
- 4
The rounds
- Mar 2024
Founders and team
From Sionna Therapeutics's own website: 6 on the team.
- Mike CloonanPresident and Chief Executive Officer
- Andy ChuVice President, Information and Technology
- Erica IorioVice President, Finance and Controller
- Jen FitzpatrickChief Legal Officer & Head of Program Management
- Laurie StelzerDirector
- Paul ClancyChair
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Sionna Therapeutics
How much has Sionna Therapeutics raised?
Sionna Therapeutics has raised $182M across 1 round since 2024.
When did Sionna Therapeutics last raise?
Sionna Therapeutics's most recent round was a Series C of $182M in Mar 2024.
What was Sionna Therapeutics's biggest round?
Its most recent round, $182M in Mar 2024, is also its largest on record.
Who backed Sionna Therapeutics first?
Sionna Therapeutics's first round on record, in Mar 2024, was backed by Atlas Venture, OrbiMed and RA Capital Management and 1 others.
What stage is Sionna Therapeutics at?
Sionna Therapeutics's latest named round is a Series C, in Mar 2024.
Where is Sionna Therapeutics based?
Sionna Therapeutics is based in the United States.
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