What is INSP's dilution risk score?

INSP has a latest available DilutionScore record of 24/100, categorized as low dilution risk by the DilutionWatch scoring model. DilutionWatch displays SEC filing and dilution indicators for INSP, 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 INSP?

DilutionWatch tracks 25 SEC filing types for INSP 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 INSP shareholders?

Stock dilution occurs when a company issues new shares, reducing the ownership percentage of existing shareholders. For INSP, 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 INSP tracking?

DilutionWatch provides a free tier that shows DilutionScores and basic filing history for INSP. 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.

INSP Dilution Risk Score: 24/100 (LOW)

Score Breakdown

📋 Offering Ability

40

💰Cash Runway—

📊 Float Risk

15

⚠️ Warrant Exposure

40

🔄 Convertible Debt

40

Dilution Forecast

☀️

Clear

No significant dilution signals

model est. 0%

No significant dilution signals detected for INSP.

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Market Data

Market Cap$1.19B

Shares Outstanding28.91M

Float26.95M

Cash$320.68M

Debt$21.40M

Short InterestN/A

Institutional Holdings

QoQ: ↑ 7.8% shares (2026Q1 vs prior)

307 institutional holders · 39.70M shares

#1 BlackRock, Inc. 3.55M shares

#2 MORGAN STANLEY 3.16M shares

#3 DEERFIELD MANAGEMENT COMPANY, L.P. 2.70M 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 Interest3.92M

Days to Cover5.0

% of Float14.6%

FINRA data as of Jul 31, 2026

Insider Buy/Sell Ratio

Recent SEC Activity

xbrl XBRL CONVERTIBLE 2018-12-31

Full SEC filing analysis available with free account →

Recent News

No recent news

Factual INSP Dilution Snapshot

Inspire Medical Systems, Inc. (INSP) has a DilutionScore of 24/100, rated Low dilution risk. Score date: August 28, 2026.

Recent SEC activity tracked for INSP: xbrl on 2018-12-31.

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.

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📖 Dilution Education

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More Research for INSP

INSP FDA Catalyst Timeline & Biotech Grade — BiotechSigns

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

INSP — Inspire Medical Systems, Inc. Dilution Risk Tracker