On April 19, 2022, Sionna Therapeutics closed the transaction. The company announced that it has received $111,000,000 in a round of funding led by new investor OrbiMed Advisors LLC. The transaction included participation from new investors T. Rowe Price Group, Inc., Q Healthcare Holding Llc, existing investors RA Capital Management, L.P., TPG The Rise Fund, TPG Capital, L.P., Atlas Venture L.P., and Cystic Fibrosis Foundation.

The company has raised $150,000,000 in funding till date.