53 /100
HIGH RISK
Score updated May 30, 2026

ATRA — Atara Biotherapeutics, Inc. Dilution Risk Tracker

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

⚠️ Not financial advice. Do your own research before making any investment decisions.

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📊 Score Breakdown

📋 Offering Ability
60
💰 Cash Runway
40
📊 Float Risk
45
⚠️ Warrant Exposure
15
🔄Convertible Debt

🌦️ Dilution Forecast

🌥️
Advisory
Moderate dilution signals present
31%
📉 Score Deterioration 40%
• Score rose 29 points recently (worsening)
💰 Capital Raise 38%
• Active shelf registration ($9M, 10% of market cap)
• Active ATM program with $11M remaining capacity
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💹 Market Data

Market Cap$94.70M
Shares Outstanding9.01M
Float4.74M
Cash$8.36M
Debt$9.08M
Short InterestN/A

🏛 Institutional Holdings

QoQ: ↑ 9.0% shares (2025Q4 vs prior)
42 institutional holders · 2.06M shares
#1 EcoR1 Capital, LLC 573.2K shares
#2 Redmile Group, LLC 441.7K shares
#3 VANGUARD GROUP INC 225.9K shares
+ 17 more holders Sign up free to view →

📉 Short Interest

Short Interest546.5K
Days to Cover1.0
% of Float11.5%
FINRA data as of May 15, 2026

📁 Recent SEC Activity

xbrl XBRL CONVERTIBLE Dec 31, 2014
EFFECT EFFECT Mar 25, 2026
424B3 ATM Mar 25, 2026
4 INSIDER TRANSACTION Mar 19, 2026
S-3 SHELF Mar 17, 2026
Full SEC filing analysis available with free account

📰 Recent News

No recent news
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🔬 More Research for ATRA
📊 ATRA FDA Catalyst Timeline & Biotech Grade — BiotechSigns 📡 ATRA Signal Convergence & Dark Pool Activity — StonkWhisper

Part of the Guerilla Finance research network. Cross-reference multiple data sources for better due diligence.