SION Sionna Therapeutics, Inc.
Company Analysis
Latest News
🟢 Sionna Therapeutics is trading 6.21% up in pre-market after rebounding from September 15 selloff
Sionna Therapeutics is trading 6.21% up now at $7.48 after rebounding from the September 15 selloff and September 16 close of $7.04. - No fresh bullish...
🟢 Sionna Therapeutics is trading 6.4% up today, likely technical rebound after prior session’s decline
Sionna Therapeutics is trading 6.4% up at $7.32, with the rebound appearing most consistent with technical trading after the prior session’s sharp decline. -...
Sionna Cuts Half Its Staff and Bets Everything on One Cystic Fibrosis Drug Combo — Can $268 Million Buy Enough Time?
Shares plunged 12% to $7.26 as Sionna Therapeutics confirmed what the market feared: the August trial failure wasn't a speed bump but a dead end. The company...
🔴 Sionna Therapeutics is trading 12.05% down today after 46% workforce reduction and SION-719 discontinuation
Sionna Therapeutics is trading 12.05% down now at $7.26 after announcing a restructuring. - The plan eliminates approximately 46% of the workforce and...
Sionna Therapeutics Announces Restructuring, Cutting 46% of Workforce to Prioritize Pipeline
Sionna Therapeutics (SION) has approved a restructuring plan to focus resources on its SION-451 and SION-2222 dual combination program for cystic fibrosis. The...
🟢 Sionna Therapeutics is trading 5% up today with no clear catalyst
Sionna Therapeutics is trading 5.24% up at $8.20 on September 14, 2026, with no clear catalyst identified. - No new company announcement, filing, earnings...
🟢 Sionna Therapeutics is trading 5.19% up today — catalyst unconfirmed
Sionna Therapeutics is trading at $7.10, up +5.19%, amid sharp recent volatility, with no confirmed company-specific catalyst identified. - No new...
🔴 Sionna Therapeutics is trading 5.4% down today after sharp gains in prior two sessions
Sionna Therapeutics is trading at $6.92, down 5.40%, following sharp gains of 7.13% on September 1 and 13.16% on September 2; today’s move suggests a pullback...
🟢 Sionna Therapeutics is trading 10.29% up today amid sector-driven biotech strength
Sionna Therapeutics is trading 10.29% up at $7.12, with the move appearing mainly sector-driven as biotech ETF XBI rose 2.75% during regular trading. - The...
🟢 Sionna Therapeutics is trading 5% up today; no clear catalyst identified
Sionna Therapeutics is trading at $6.79, up 5.13%, although no clear company-specific catalyst has been identified for September 2, 2026. - Its official news...
🔴 Sionna Therapeutics is trading 8.26% down in pre-market; no clear immediate catalyst identified
Sionna Therapeutics is trading 8.26% down in pre-market at $5.93, with the immediate trigger unclear. - It rose 7.13% to $6.46 on September 1, 2026. - No new...
🟢 Sionna Therapeutics is trading 5% up today
Sionna Therapeutics is trading 5.14% up now at $6.34, despite biotech and broader markets trading lower on September 1, 2026; no clear company-specific...
🔴 Sionna Therapeutics is trading 5% down in pre-market with no clear company-specific explanation
Sionna Therapeutics is trading 5.14% down at $5.72, based on a pre-market quote; no new September 1, 2026 company announcement clearly explains the decline. -...
🟢 Sionna Therapeutics is trading 10.37% up today on a biotech-sector rebound
Sionna Therapeutics is trading 10.37% up at $6.17 as biotechnology sentiment improves on August 25, 2026. - XBI was reported up 2.06% during regular trading,...
🟢 Sionna Therapeutics is trading 5.6% up today amid a biotech-sector rebound
Sionna Therapeutics is trading 5.64% up now at $5.91, primarily as biotech sentiment improves, with XBI up 2.06%. - The rebound follows the recent collapse...
🟢 Sionna Therapeutics is trading 5% up today after a volatile selloff
Sionna Therapeutics is trading 5.01% up now at $5.55 after a volatile selloff over the preceding week. - No credible August 24, 2026 company announcement...
🔴 Sionna Therapeutics is trading 6.2% down today as biotech sector reverses Wednesday’s rally
Sionna Therapeutics is trading 6.2% down now at $5.86 after the broader biotech sector reversed Wednesday’s rally. - Biotech ETF XBI is down 2.47% during the...
🟢 Sionna Therapeutics rises 5.1% — Biotech Sector Surges on Positive mRNA Cancer Vaccine Trial Results
With Biotech (XBI) up 3.7%, this looks like a sector-led move rather than a company-specific surprise. The biotech sector, proxied by the XBI ETF, is trading...
Sionna Therapeutics investigated, following 91% stock plunge on failed drug trial
The Law Offices of Howard G. Smith launched an investigation into Sionna Therapeutics on August 18, 2026. The firm is investigating potential violations of...
🔴 Sionna Therapeutics is trading 5.6% down today after Phase 2a failure of SION-719
Sionna Therapeutics is trading 5.6% down now at $6.10, following the August 10 Phase 2a failure of SION-719. - Sionna stopped advancing SION-719 as an add-on...