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NASDAQ · SION

Sionna Therapeutics, Inc.

Healthcare · Biotechnology

$4.90

Down-$0.16 (-3.27%)

Updated Oct 12, 2026, 5:51 PM

SID Score

2.8/10

Composite research score

Smart Money

—

Institutional and insider signal

Market cap
1.86B
P/E ratio
-31.26
Dividend yield
0.00%
52-week range
$4.01 – $54.97
Volume
633.56K
Avg. volume
293.9K

Price performance · SION

SION price history

1M range · 20 trading sessions · Daily adjusted prices

Prices through Oct 9, 2026

SION closed at $4.90 after 20 trading sessions, down 40.68% for the selected period.

Last close
$4.90
Period change
-40.68%
Period low
$4.75
Period high
$8.26
Daily close
View OHLC price history
SION OHLC price history, latest 40 sessions
DateOpenHighLowCloseVolume
Oct 9, 2026$4.93$5.12$4.83$4.90633.56K
Oct 8, 2026$4.78$4.97$4.65$4.90915.6K
Oct 7, 2026$4.68$4.87$4.61$4.82880.22K
Oct 6, 2026$4.88$4.88$4.52$4.751.26M
Oct 5, 2026$4.95$4.96$4.63$4.851.1M
Oct 2, 2026$5.19$5.19$4.86$4.911.16M
Oct 1, 2026$5.26$5.33$5.03$5.101.06M
Sep 30, 2026$5.19$5.3421$5.02$5.261.16M
Sep 29, 2026$5.15$5.19$5.025$5.15797.86K
Sep 28, 2026$5.17$5.25$5.05$5.12775.82K
Sep 25, 2026$5.28$5.30$5.09$5.231.4M
Sep 24, 2026$5.50$5.59$5.1521$5.231.25M
Sep 23, 2026$6.03$6.1199$5.32$5.511.67M
Sep 22, 2026$5.99$6.17$5.84$6.021.69M
Sep 21, 2026$6.00$6.13$5.70$6.002.52M
Sep 18, 2026$7.12$7.19$5.90$5.963.7M
Sep 17, 2026$7.27$7.73$7.15$7.181.48M
Sep 16, 2026$6.95$7.3681$6.91$7.041.97M
Sep 15, 2026$7.87$8.00$6.85$6.882.46M
Sep 14, 2026$7.84$8.535$7.84$8.261.22M

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