Sionna Therapeutics, Inc. (SION) — Insider Trading Activity

Sionna Therapeutics, Inc. (SION) has 478 insider transactions on record, including 28 open-market purchases and 391 sales by company executives and directors. The most recent transaction was filed on 2026-05-27 by Orbimed Advisors LLC. The largest single transaction was a purchase of $ 20.25M by Coulter James G.