January 2, 2026 · Form 4 insider transaction
Ridloff Elena bought 165,440 shares of SION 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 4 days after the transaction.
The shares underlying this option vest in forty-eight equal monthly installments following January 2, 2026, subject to the Reporting Person's continued service on each such vesting date.