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Sionna Therapeutics, Inc.
Sionna Therapeutics is a clinical-stage biopharmaceutical company headquartered in Waltham, Massachusetts, focused on developing treatments for cystic fibrosis.
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Sionna Therapeutics, Inc. at a glance
Sionna Therapeutics, Inc. is a biotech company headquartered in Waltham, United States. It is publicly listed (SION) with a market capitalisation of $221.2M. Xcout tracks 39 named people at Sionna Therapeutics, Inc., including Michael Cloonan (President, Chief Executive Officer & Director).
Sionna Therapeutics, Inc. leadership
- Michael CloonanPresident, Chief Executive Officer & Director
- Mike CloonanPresident and Chief Executive Officer
- Elena H. RidloffCFO & Chief Business Officer
- Elena Ridloff, C.F.A.Chief Financial Officer
- Charlotte McKeeChief Medical Officer & Head of Research and Development
- Caroline Stark BeerChief Business Officer
33 more named people on record for Sionna Therapeutics, Inc., with roles, board committees and tenure — see the full roster →
Sionna Therapeutics, Inc. funding rounds before its IPO
Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series C | $182M | 10 named | |
| Series B | $111M | 7 named |
Financing after the IPO — public offerings and SEC Form D private placements — is not listed as a funding round.
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Investors
Sionna Therapeutics, Inc. competitors
A few of Sionna Therapeutics, Inc.'s closest competitors — see the full list of competitors and alternatives →
Nocion Therapeutics, Inc. is a clinical-stage biotechnology company headquartered in Watertown, Massachusetts, focused on developing novel therapeutics to treat chronic cough and other conditions.
Sunterra Bio is a biopharmaceutical company focused on developing inhaled small-molecule therapies for rare pulmonary diseases. Headquartered in Carlsbad, California, the company advances targeted treatments for respiratory conditions.
Aileron Therapeutics, Inc. is a clinical-stage biopharmaceutical company with principal executive offices located in Cambridge, Massachusetts. The company went public through a reverse merger and is involved in therapeutic acquisitions and development.
Korsana Biosciences is a private biotechnology research company founded in 2024 and headquartered in Waltham, Massachusetts.
SpliSense is an Israeli biotechnology company developing antisense oligonucleotide therapies that correct disease-causing RNA splicing defects. Its programs are aimed at patients with genetic diseases, including specific mutations associated with cystic fibrosis.
Centessa Pharmaceuticals LLC is a biotechnology research company headquartered in Boston, Massachusetts, United States. The company comprises leaders, innovators, and scientists dedicated to pursuing and developing transformational medicines for patients.
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More on Sionna Therapeutics, Inc. in Xcout Intel
- 39 named people with titles, LinkedIn and board committees
- 2 funding rounds before the IPO with the investors in each, and who they co-invest with
- 1 corporate event with sources — deals, leadership changes, layoffs
- The full competitor set, tracking, exports and API access