SIONNA THERAPEUTICS INC

Ticker: SION CUSIP: 829401108 Class: Common Stock

abrdn plc's Holding History (CIK: 0001716774)

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

Q4 2025

Shares 839,960 Value ($000) $34,556 Avg Close $37.92 Range $24.65 - $45.00

Q3 2025

Shares 950,547 Value ($000) $27,956 Avg Close $21.76 Range $16.14 - $30.61

Q2 2025

Shares 950,547 Value ($000) $16,492 Avg Close $13.10 Range $7.25 - $18.85

Q1 2025

Shares 745,964 Value ($000) $7,803 Avg Close $16.34 Range $10.27 - $25.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	839,960	$34,556	$37.92	$24.65 - $45.00
Q3 2025	950,547	$27,956	$21.76	$16.14 - $30.61
Q2 2025	950,547	$16,492	$13.10	$7.25 - $18.85
Q1 2025	745,964	$7,803	$16.34	$10.27 - $25.19