October 1, 2025 · Form 4 insider transaction
Beer Caroline Stark bought 255,000 shares of Sionna Therapeutics, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 2 days after the transaction.
25% of the shares underlying this option shall vest on September 8, 2026, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.