Cystic fibrosis company Sionna seeks $150 million raise in IPO

4 February 2025

Sionna Therapeutics hopes to raise $150 million and secure a market capitalization of about $692 million in an initial public offering (IPO).

The US biotech company plans to sell 8.8 million shares for between $16 and $18 each in a listing on the Nasdaq Global Market under the symbol SION.

Sionna describes its mission as an attempt to revolutionize the current treatment paradigm for cystic fibrosis (CF).

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