Liquidity Event
Any event that allows shareholders to convert their equity into cash (IPO, acquisition, etc.).
Definition
A liquidity event is any transaction that allows shareholders to sell their shares for cash. The main types are IPOs, acquisitions, mergers, and tender offers. For most startup employees, a liquidity event is the only way to realize the value of their equity, since private company shares are generally illiquid (cannot be easily sold).
Why it matters
Until a liquidity event, your equity is a paper number. You cannot pay rent with stock options. Understanding the likely path to liquidity (and the timeline) helps you make informed decisions about exercising options, tax planning, and career moves.
Example
An employee has held options for 5 years at a private company. The company IPOs, triggering a liquidity event. After the 6-month lock-up, the employee can finally sell shares and realize the value they have been accumulating.