For informational purposes only. This article aggregates publicly available SEC filing data and is provided for educational and research purposes only. Nothing here constitutes financial advice, a recommendation to buy or sell any security, or professional investment guidance. Richard Burke / Guerilla Finance Inc. is not a registered investment advisor. Always conduct your own due diligence and consult a licensed financial professional before making any investment decision. Full Disclaimer →
Reference
Stock Dilution Glossary
Updated April 2026 45 Terms DilutionWatch Research

A comprehensive reference of stock dilution terminology used throughout DilutionWatch and in SEC filings. Understanding these terms is essential for interpreting dilution risk data and making informed investment decisions.

ATM Offering

At-the-market offering where a company sells shares directly into the open market through a broker-dealer at prevailing market prices, typically under a shelf registration.

Anti-Dilution Provision

A contractual clause that adjusts an investor's conversion price or share count to compensate for future dilutive issuances, protecting certain shareholders at the expense of others.

Authorized Shares

The maximum number of shares a company is legally permitted to issue as specified in its articles of incorporation. The gap between authorized and outstanding shares represents potential dilution capacity.

Baby Shelf

SEC rule limiting companies with public floats below $75 million to selling no more than one-third of their float in any 12-month period through S-3 shelf registrations.

Basic Shares Outstanding

The number of shares currently issued and held by shareholders, excluding potential shares from options, warrants, and convertible securities.

Burn Rate

The rate at which a company spends its cash reserves, typically measured monthly or quarterly. High burn rates with low cash reserves signal near-term dilution risk.

Cash Runway

The number of months a company can continue operating at its current burn rate before exhausting cash reserves. Short cash runway is the strongest predictor of imminent dilution.

Cashless Exercise

A warrant or option exercise where the holder receives fewer shares instead of paying the exercise price in cash, using the intrinsic value to cover the cost.

Common Stock

The standard equity security representing ownership in a company, with voting rights and residual claims on assets. Common shareholders bear the primary impact of dilution.

Conversion Price

The price at which a convertible security (note or preferred stock) converts into common shares. Lower conversion prices result in more shares issued and greater dilution.

Convertible Note

A debt instrument that can be converted into equity (common shares) at a specified conversion price, either at the holder's option or mandatorily upon certain conditions.

Death Spiral Financing

A toxic convertible structure where the conversion price decreases as the stock price falls, creating a feedback loop where conversion drives price lower, triggering more conversion at even lower prices.

Diluted EPS

Earnings per share calculated using the fully diluted share count, which includes all potential shares from options, warrants, and convertible securities.

Diluted Shares

The total share count including all potential shares from in-the-money options, warrants, convertible notes, and other dilutive securities, calculated using standard accounting methods.

DilutionScore

DilutionWatch's proprietary 0-100 risk rating that quantifies stock dilution risk by analyzing SEC filings, share issuance patterns, warrant overhang, cash runway, and historical dilution rates.

Direct Offering

A securities offering where shares are sold directly to specific investors (often institutional) rather than through an exchange, typically at a discount to market price.

Exercise Price

The price at which a warrant or option holder can purchase shares from the company, also called the strike price.

Float

The number of shares available for public trading, calculated as total outstanding shares minus restricted shares held by insiders and other locked-up holders.

Form 424B

SEC filing form for prospectus supplements filed under Rule 424(b), used to disclose specific offering terms under an existing shelf registration.

Form 8-K

SEC current report filed to announce material events, including offering announcements, financing agreements, and other dilution-relevant disclosures.

Form S-1

SEC registration statement for initial public offerings and other securities registrations that don't qualify for the shorter Form S-3.

Form S-3

SEC registration statement for shelf offerings, available to companies meeting specific eligibility requirements including minimum public float and reporting history.

Fully Diluted Share Count

The total potential share count if all dilutive securities (options, warrants, convertibles) were exercised or converted, representing maximum possible dilution.

Market Capitalization

The total market value of a company's outstanding shares, calculated as share price multiplied by shares outstanding.

Mixed Shelf

A shelf registration authorizing multiple types of securities (common stock, preferred stock, warrants, debt) up to a total dollar amount, providing maximum financing flexibility.

Offering Discount

The percentage below current market price at which new shares are sold in a direct or PIPE offering, representing a direct value transfer from existing shareholders.

Outstanding Shares

The total number of shares currently issued and held by all shareholders, including insiders and institutional holders but excluding treasury shares.

PIPE Deal

Private Investment in Public Equity - a private placement of securities to accredited investors, typically at a discount to market price, with subsequent registration for resale.

Pre-Funded Warrant

A warrant where most of the purchase price is paid upfront with only a nominal exercise price remaining (typically $0.001), functionally equivalent to common shares.

Preferred Stock

A class of stock with priority over common stock for dividends and liquidation, often convertible into common shares. Preferred stock issuance and conversion create dilution for common shareholders.

Prospectus

A legal document describing a securities offering, including the type, amount, price, and terms of securities being offered, along with company information and risk factors.

Prospectus Supplement

An addition to a base prospectus that describes specific offering terms, filed when securities are sold under a shelf registration.

Registered Direct Offering

An offering of securities directly to a small number of investors under an effective registration statement, combining the speed of a private placement with the registration of a public offering.

Reverse Stock Split

A corporate action that reduces the number of outstanding shares by combining multiple shares into one, increasing the per-share price without changing market capitalization.

Rule 415

SEC rule allowing companies to register securities for future issuance over up to three years through shelf registration statements.

SEC EDGAR

The SEC's Electronic Data Gathering, Analysis, and Retrieval system where all public company filings are stored and publicly accessible.

Secondary Offering

The sale of securities by an already-public company, either newly issued shares (dilutive) or existing shares sold by insiders/early investors (non-dilutive).

Shelf Registration

A pre-approved SEC registration that allows a company to issue securities over up to three years without filing new registrations for each offering.

Stock-Based Compensation

Employee compensation in the form of stock options, restricted stock units (RSUs), or other equity instruments that create dilution as they vest and are exercised.

Strike Price

See Exercise Price.

Toxic Convertible

A convertible instrument with terms heavily favoring the lender, typically featuring floating conversion prices that decrease with the stock price, enabling increasing dilution at lower prices.

Treasury Stock Method

Accounting method for calculating the dilutive effect of options and warrants, which assumes exercise proceeds are used to repurchase shares at market price.

Underwritten Offering

An offering where an investment bank (underwriter) commits to purchasing all shares from the company and reselling them to investors, guaranteeing the company receives the offering proceeds.

Warrant

A security giving the holder the right to purchase shares at a specified exercise price within a specified time period, typically issued as part of financing transactions.

Warrant Overhang

The total number of outstanding warrants expressed as a percentage of current shares outstanding, representing potential future dilution.

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