SIONNA THERAPEUTICS INC

Ticker: SION CUSIP: 829401108 Class: Common Stock

Alyeska Investment Group, L.P.'s Holding History (CIK: 0001453072)

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

Q4 2025

Shares 136,222 Value ($000) $5,604 Avg Close $37.92 Range $24.65 - $45.00

Q3 2025

Shares 186,222 Value ($000) $5,477 Avg Close $21.76 Range $16.14 - $30.61

Q2 2025

Shares 186,222 Value ($000) $3,231 Avg Close $13.10 Range $7.25 - $18.85

Q1 2025

Shares 186,222 Value ($000) $1,948 Avg Close $16.34 Range $10.27 - $25.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	136,222	$5,604	$37.92	$24.65 - $45.00
Q3 2025	186,222	$5,477	$21.76	$16.14 - $30.61
Q2 2025	186,222	$3,231	$13.10	$7.25 - $18.85
Q1 2025	186,222	$1,948	$16.34	$10.27 - $25.19