SION

NASDAQ · Biotechnology

Sionna Therapeutics Inc

Small-Cap Stocks Stocks Under $10 Biotech Stocks Healthcare Stocks

$5.96

-1.22 (-16.99%)

As of Sep 20, 10:10 PM ET ·

SION News2 articles

Sionna Plunges 91% as CF Drug Fails Trial, Market Cap Drops Below Cash

Sionna shares fell 91% after its CF drug SION-719 failed a Phase 2a trial, with efficacy far below expectations. The stock now trades below cash value.

Sionna Therapeutics Collapses 92% After Phase 2a Setback

Sionna Therapeutics (SION) tumbled 92% after its Phase 2a trial failed to meet the primary endpoint, pushing the market cap below its cash holdings. Vertex (VRTX) rose on reduced competitive risk.