SIONNA THERAPEUTICS INC

Ticker: SION CUSIP: 829401108 Class: Common Stock

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 15,620 Value ($000) $643 Avg Close $37.92 Range $24.65 - $45.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	15,620	$643	$37.92	$24.65 - $45.00