This Practice Note provides a brief introduction to the equity and incentive compensation plans and agreements that US startups often use to attract and retain key personnel. Although it is written with a focus on US companies, many of the issues raised in it are also relevant to a non-US company in the early stages of its development. To effectively advise US startups, and the investors that frequently finance them, it is imperative to understand startup equity and incentive compensation structures, and why and how they may differ from those offered by more mature companies. The following is a general discussion of compensation practices of investor-backed, Kickstarter-funded, and bootstrapped startup enterprises, where the founders’ intended trajectory is to quickly grow the company (and its value) in the hopes of an exit or liquidity event via an initial public offering (IPO) or sale. It is a world of short- to mid-term time horizons where investors (and founders and senior executives) demand significant growth and substantial returns. This