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Startup Legal Glossary

Plain-English definitions of the legal terms every founder needs to understand before signing anything.

Equity & Ownership

Equity

The ownership interest in a company, typically represented as shares or a percentage of the total outstanding shares. Founders, employees, and investors all hold equity in different forms and classes.

Related: 5 Equity Split Mistakes That Kill Startups

Vesting

The process by which a founder or employee earns their equity over time rather than owning it outright from day one. Vesting schedules protect the company and remaining founders if someone leaves early.

Related: Why Every Startup Needs a Vesting Schedule

Vesting Cliff

The minimum period that must pass before any equity vests. The standard cliff is one year. If a founder or employee leaves before the cliff, they receive no equity. At the cliff, a lump sum typically vests all at once.

Related: Why Every Startup Needs a Vesting Schedule

Accelerated Vesting

A clause that speeds up the vesting schedule upon a triggering event. Single trigger acceleration vests shares automatically upon acquisition. Double trigger acceleration requires both an acquisition and an involuntary termination or significant role change.

Related: Why Every Startup Needs a Vesting Schedule

Dilution

The reduction in an existing shareholder’s ownership percentage caused by the issuance of new shares. Dilution occurs during funding rounds, when option pools are expanded, and when convertible instruments convert into equity.

Related: 5 Equity Split Mistakes That Kill Startups

Option Pool

A reserve of equity set aside for future employees, advisors, and other contributors. Institutional investors require an option pool before closing a funding round. The standard reserve is 10 to 20% of total equity.

Related: 5 Equity Split Mistakes That Kill Startups

Cap Table

Short for capitalization table. A document that tracks the full ownership structure of a company, listing all shareholders, the type and number of shares they hold, and their ownership percentage. Investors review the cap table during every due diligence process.

Common Stock

The basic form of equity ownership in a corporation, typically held by founders and employees. Common stockholders are paid last in a liquidation event, after debt holders and preferred stockholders.

Preferred Stock

A class of equity with rights and privileges that common stock does not have, typically held by investors. Preferred stock usually carries a liquidation preference, anti-dilution protection, and sometimes board representation rights.

Funding & Investment

SAFE

Simple Agreement for Future Equity. An investment instrument created by Y Combinator that allows investors to provide capital in exchange for the right to receive equity at a future priced round. SAFEs have no interest rate and no maturity date.

Related: What is a SAFE Agreement? A Founder’s Guide

Convertible Note

A short-term debt instrument that converts into equity at a future funding round. Unlike a SAFE, a convertible note accrues interest and has a maturity date. It is commonly used for early-stage investment before a company has an established valuation.

Related: What is a SAFE Agreement? A Founder’s Guide

Valuation Cap

A ceiling on the price at which a SAFE or convertible note converts into equity. If the company raises its next round at a valuation above the cap, the investor converts at the cap price, receiving more shares than new investors paying the higher price.

Related: What is a SAFE Agreement? A Founder’s Guide

Discount Rate

A percentage reduction applied to the price per share that a SAFE or convertible note investor pays at conversion. A 20% discount means the investor pays 80 cents for every dollar paid by new investors in the same round.

Related: What is a SAFE Agreement? A Founder’s Guide

Pro-Rata Rights

The right of an existing investor to participate in future funding rounds to maintain their ownership percentage. An investor exercising pro-rata rights invests enough in subsequent rounds to avoid being diluted by the new shares being issued.

Related: What is a SAFE Agreement? A Founder’s Guide

Liquidation Preference

A provision that determines who gets paid first and how much in a liquidation event such as an acquisition or bankruptcy. A 1x liquidation preference means investors receive their original investment back before common shareholders receive anything.

Pre-Money Valuation

The valuation of a company before new investment is added. Used to calculate how much ownership investors receive in exchange for their capital. If a company has a $5 million pre-money valuation and raises $1 million, the post-money valuation is $6 million and the investor owns approximately 16.7%.

Post-Money Valuation

The valuation of a company after new investment is added. Equal to the pre-money valuation plus the amount raised in the round.

Legal Agreements & Documents

Co-Founder Agreement

A legal contract between the founders of a company that governs equity ownership, vesting, roles, decision-making authority, IP assignment, and what happens when a founder leaves. One of the most important documents a startup will ever sign.

Related: How to Structure a Co-Founder Agreement

IP Assignment

A clause or standalone agreement that transfers ownership of intellectual property from an individual to the company. Covers code, designs, inventions, and other work product created in connection with the company’s business.

Related: IP Assignment: What Founders Need to Know

NDA

Non-Disclosure Agreement. A confidentiality contract that prevents the signing party from disclosing information designated as confidential. Used to protect sensitive information shared with potential hires, partners, vendors, and investors.

Related: NDA vs Non-Compete: What Founders Actually Need

Non-Compete

An agreement that prevents a founder or employee from working for a competitor or starting a competing business for a defined period after leaving the company. Enforceability varies significantly by state. California does not enforce non-competes against employees.

Related: NDA vs Non-Compete: What Founders Actually Need

Non-Solicitation Agreement

An agreement that prevents a departing founder or employee from recruiting company employees or approaching company customers for a defined period after they leave. Generally more enforceable than a non-compete.

Related: NDA vs Non-Compete: What Founders Actually Need

Operating Agreement

The governing document for a limited liability company that defines how the LLC operates internally, including member ownership percentages, decision-making authority, profit allocation, and what happens when a member leaves.

Related: Operating Agreement vs Articles of Incorporation

Articles of Incorporation

The document filed with the state to legally create a corporation. Includes the company name, registered agent, authorized shares, and classes of stock. Filing this document brings the corporation into legal existence.

Related: Operating Agreement vs Articles of Incorporation

Shareholder Rights

Drag-Along Rights

A provision that allows a majority shareholder or group of shareholders to force minority shareholders to join in the sale of the company on the same terms. Prevents a small minority from blocking an acquisition the majority wants to proceed with.

Related: What Happens to Equity When a Co-Founder Leaves?

Tag-Along Rights

Also called co-sale rights. The right of a minority shareholder to join in a sale of shares by a majority shareholder on the same terms. Protects minority investors from being left behind when a founder or major shareholder sells their stake.

Anti-Dilution Protection

A provision that protects investors from dilution if the company raises money at a lower valuation than the investor paid. Broad-based weighted average anti-dilution is the most common and most founder-friendly form.

Right of First Refusal

The right to purchase shares before they are offered to a third party. Companies often hold a right of first refusal on shares that founders or employees want to sell, allowing the company to buy back those shares rather than having them transferred to an outside party.

Termination for Cause

A departure from the company due to serious misconduct, breach of agreement, or other defined bad acts. Co-founder agreements often give the company stronger equity repurchase rights when a founder is terminated for cause versus a voluntary departure or termination without cause. The agreement must clearly define what constitutes cause for this provision to be enforceable.

Related: What Happens to Equity When a Co-Founder Leaves?

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