🟢 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, highlighting the sector backdrop.
• The company has not announced a fresh catalyst today.
• Investors are likely treating the move as a rebound after the August 10 SION-719 Phase 2a failure and development halt, rather than a fundamental reversal.