This document defines key terms related to startup funding rounds and equity. It discusses typical vesting schedules for employee equity, how pre-money and post-money valuations are calculated, how options pools work to dilute founders, and examples of how prorata rights and convertible notes are handled. The stages of funding are also outlined, from angel/pre-seed rounds typically involving individual investors, to larger seed rounds, and later series A and B rounds involving institutional investors aimed at scaling the business.