What is PBYI's dilution risk score?

PBYI has a latest available DilutionScore record of 26/100, categorized as medium dilution risk by the DilutionWatch scoring model. DilutionWatch displays SEC filing and dilution indicators for PBYI, including shelf registrations, ATM offerings, warrant exercises, PIPE deals, and reverse split signals when detected in source data.

What SEC filings does DilutionWatch track for PBYI?

DilutionWatch tracks 25 SEC filing types for PBYI including S-3 shelf registrations, 424B prospectuses (ATM offerings), S-1 registration statements, 8-K material events, warrant exercise notices, convertible note agreements, and Form 4 insider transactions. Alerts are delivered via email within minutes of a filing appearing on EDGAR.

How does stock dilution affect PBYI shareholders?

Stock dilution occurs when a company issues new shares, reducing the ownership percentage of existing shareholders. For PBYI, common dilution events include at-the-market (ATM) stock offerings, shelf registration drawdowns, warrant exercises, and convertible note conversions. Each event increases the share count and can pressure the stock price lower.

Is DilutionWatch free for PBYI tracking?

DilutionWatch provides a free tier that shows DilutionScores and basic filing history for PBYI. Premium plans ($19.95/month Basic, $39.95/month Premium) unlock real-time email alerts, the full Pulse™ feed, advanced dilution forecasts, and access to all 10,000+ tracked tickers.

PBYI Dilution Risk Score: 26/100 (MEDIUM)

Score Breakdown

📋 Offering Ability

💰Cash Runway—

📊 Float Risk

⚠️ Warrant Exposure

🔄 Convertible Debt

Dilution Forecast

☀️

Clear

No significant dilution signals

model est. 0%

No significant dilution signals detected for PBYI.

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Market Data

Market Cap$531.17M

Shares Outstanding51.62M

Float39.09M

Cash$93.90M

Debt$11.28M

Short InterestN/A

Source-Backed Evidence Depth

This public preview uses stored DilutionWatch fields and linked SEC/market records only. Missing values are not estimated.

Field	Current Value	Basis
DilutionScore	26/100	DilutionWatch score record
Shares Outstanding	51.62M	Verified float table or market cache
Public Float	39.09M	Verified float table or market cache
Market Cap	$531.17M	Market data cache
Cash Runway	Not applicable / unavailable	DilutionWatch score inputs
Shelf Capacity	None in current score inputs	SEC-derived dilution fields
ATM Capacity	None in current score inputs	SEC-derived dilution fields
Outstanding Warrants	None in current score inputs	SEC-derived dilution fields

Recent source-backed SEC insight records available on this page: 1.

Recent SEC source mix: XBRL 1.

The page does not infer future share issuance, financing probability, cash needs, management intent, or price impact when source fields are absent.

Institutional Holdings

QoQ: ↑ 16.6% shares (2026Q1 vs prior)

158 institutional holders · 41.95M shares

#1 ACORN CAPITAL ADVISORS, LLC 4.13M shares

#2 VANGUARD CAPITAL MANAGEMENT LLC 3.64M shares

#3 BlackRock, Inc. 3.60M shares

+ 17 more holders Sign up free to view →

Institutional holder totals are aggregated from ownership filings and may use a different share basis or reporting date than public float. They are not a reconciliation against tradeable float.

Short Interest

Short Interest4.26M

Days to Cover14.0

% of Float10.9%

FINRA data as of Sep 30, 2026

Recent SEC Activity

xbrl XBRL CONVERTIBLE 2014-03-03

Full SEC filing analysis available with free account →

Recent News

No recent news available for this ticker.

Factual PBYI Dilution Snapshot

Puma Biotechnology, Inc. (PBYI) has a DilutionScore of 26/100, rated Medium dilution risk. Score date: October 13, 2026.

Recent SEC activity tracked for PBYI: xbrl on 2014-03-03.

This automatically generated snapshot is assembled from stored DilutionWatch data fields and may contain data-source errors or omissions. It is not financial advice, not investment research, and not a recommendation. Do your own research and review the full disclaimer and terms of service.

DilutionScore History — Last 90 Days

PBYI's DilutionScore is currently 26/100 (Medium risk), with 1 score change tracked over 89 days. The score improved from 22/100 (Low risk).

Period	Score	Risk Level	Duration
Aug 14 – Oct 13, 2026	26/100	MEDIUM	60 days
Jul 16 – Aug 13, 2026	22/100	LOW	29 days

Score recalculated daily from SEC filings and market data. Sign up free for real-time score change alerts.

Share Dilution History

PBYI shares outstanding have increased 0.0% from 50.89M (May 2026) to 50.90M (May 2026). Each increase represents potential dilution to existing shareholders.

Date	Shares Outstanding	Public Float	Change
May 11, 2026	50.90M	39.09M	▲ 0.05%
May 01, 2026	50.89M	39.07M	▲ 0.16%

Share counts sourced from verified regulatory filings. Increases indicate dilution events.

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