Biggest movers / SION

SION alerts & big moves

SIONNA THERAPEUTICS INC · Nasdaq · Healthcare

Last price$5.07

Change−0.39%vs previous close

Alerts18last 90 days

Last alertSeptember 15, 20269:40 AM ET

52-week rangeas recorded on September 15, 2026

Low $4.01High $54.97

Alert history — last 90 days

All 18 alerts in the window. Times are ET; the public list runs 15 minutes behind the live feed.

GeneralLeadership−10.3%in 17 minSeptember 15, 2026, 9:40 AM ET
$7.31Vol 181.3K0.1× avg volumeHealthcare
Momentum+10.4%in 12 minSeptember 1, 2026, 4:57 PM ET
$6.46Vol 1.4M0.3× avg volumeHealthcare
General+10.4%in 17 minAugust 25, 2026, 11:07 AM ET
$6.12Vol 493.7K0.1× avg volumeHealthcare
General+10.6%in 17 minAugust 25, 2026, 10:53 AM ET
$6.13Vol 446.9K0.1× avg volumeHealthcare
Momentum+11.4%in 8 minAugust 12, 2026, 9:36 AM ET
$5.49Vol 749.3K0.2× avg volumeHealthcare
General+10.1%in 7 minAugust 12, 2026, 9:35 AM ET
$5.43Vol 545.4K0.2× avg volumeHealthcare
General+19.9%in 14 minAugust 11, 2026, 9:36 AM ET
$5.37Vol 2.3M0.9× avg volumeHealthcare
Momentum+10.5%in 11 minAugust 11, 2026, 9:33 AM ET
$4.95Vol 1.3M0.5× avg volumeHealthcare
General+10.2%in 14 minAugust 10, 2026, 2:02 PM ET
$4.59Vol 29.7M48× avg volumeHealthcare
General+10.1%in 6 minAugust 10, 2026, 9:52 AM ET
$4.48Vol 14.3M23× avg volumeHealthcare
General−14.9%in 10 minAugust 10, 2026, 9:32 AM ET
$4.45Vol 7.9M13× avg volumeHealthcare
General+10.3%in 15 minAugust 10, 2026, 9:06 AM ET
$5.33Vol 6.2M9.9× avg volumeHealthcare
Momentum+9.7%in 13 minAugust 10, 2026, 9:04 AM ET
$5.30Vol 6.0M9.6× avg volumeHealthcare
General+12.9%in 16 minAugust 10, 2026, 8:06 AM ET
$5.13Vol 3.5M5.7× avg volumeHealthcare
General+21.1%in 16 minAugust 10, 2026, 7:49 AM ET
$4.93Vol 2.6M4.2× avg volumeHealthcare
General+11.3%in 10 minAugust 10, 2026, 7:33 AM ET
$4.15Vol 1.4M2.3× avg volumeHealthcare
General−79.4%in 17 minAugust 10, 2026, 7:11 AM ET
$10.55Vol 16.1K<0.1× avg volumeHealthcare
Momentum+8.1%in 17 minAugust 7, 2026, 9:47 AM ET
$53.95Vol 70.3K0.1× avg volumeHealthcare

Recent SEC filings

Straight from EDGAR — the company’s own filings, in plain English. Every line links to the original document.

Big investorSCHEDULE 13D/ASeptember 21, 2026
An investor bought a stake of more than 5% and intends to influence the company, so they have to say so publicly.
Read the filing on sec.gov →
Leadership8-KSeptember 14, 2026
A director or senior executive joined or left the company.
Read the filing on sec.gov →
Company update8-KAugust 10, 2026
The company told regulators something it considered important had happened.
Read the filing on sec.gov →
Quarterly report10-QAugust 6, 2026
The company filed its quarterly financial report. This is scheduled, not news in itself.
Read the filing on sec.gov →

Get SION alerts as they fire

Add SION to your watchlist and the live feed shows its next big move the second the engine sees it — with a push alert on iPhone, Android or desktop.

Open the live feed See plans

Prices come from Dipfinding’s market feed and may be delayed. Alert history covers the channels published openly on this site. Information only — not financial advice.