19 /100
LOW RISK
Score updated Apr 13, 2026

SION

Sionna Therapeutics, Inc. — Stock Dilution Tracker

Track SION dilution risk with DilutionWatch's stock tracker. DilutionScore™ measures dilution risk across 5 factors — lower scores indicate higher risk of share dilution.

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📊 Score Breakdown
📋 Offering Ability
20
💰 Cash Runway
0
📊 Float Risk
65
⚠️ Warrant Exposure
15
🔄Convertible Debt
🌦️ Dilution Forecast
☀️
Clear
No significant dilution signals
0%
No significant dilution signals detected for SION.
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💹 Market Data
Market Cap$1.70B
Shares Outstanding45.00M
Float15.78M
Cash$235.88M
Debt$8.68M
Short InterestN/A
🏛 Institutional Holdings
QoQ: ↓ 2.0% shares (2025Q4 vs prior)
100 institutional holders · 43.98M shares
#1 RA CAPITAL MANAGEMENT, L.P. 9.91M shares
#2 TPG GP A, LLC 6.74M shares
#3 ORBIMED ADVISORS LLC 3.56M shares
+ 17 more holders Sign up free to view →
📉 Short Interest
Short Interest3.76M
Days to Cover11.3
% of Float23.8%
FINRA data as of Mar 31, 2026
📁 Recent SEC Activity
xbrl XBRL CONVERTIBLE Dec 31, 2025
Full SEC filing analysis available with free account
📰 Recent News
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