Liquidity Event

A moment when ownership can turn into cash, such as an acquisition or IPO. Secondary sales can also create limited liquidity for some shareholders.

Why it matters

Until a liquidity event happens, equity is just a number on paper. Understanding the types of liquidity events helps you plan for when and how your ownership might actually turn into cash. It also affects decisions about exercising options and tax planning.

The timing and form of a liquidity event can dramatically affect how much money shareholders actually receive. A company sold in a distressed acquisition at a low valuation may result in nothing for common shareholders after liquidation preferences are satisfied. An IPO at a high valuation followed by a stock lockup expiration during a market downturn can also significantly reduce real returns.

For employees holding stock options, the liquidity event is the moment that the decision to exercise or hold becomes a real financial choice rather than a theoretical one. Understanding the likely form of a liquidity event — and its timeline — is essential for making informed decisions about option exercise and tax planning.

How it works

The most common liquidity events are acquisitions (another company buys yours), IPOs (your company goes public on a stock exchange), and secondary sales (selling shares to another private buyer before an exit). Each has a different process, timeline, and distribution mechanics.

In an acquisition, proceeds are distributed according to the cap table's liquidation waterfall, with preferred shareholders getting paid first. The distribution can happen within weeks of closing. In an IPO, shares become tradeable on a public market, though there is usually a lock-up period of 90-180 days before insiders can sell. The actual cash value depends on where the stock trades after the lockup expires.

Secondary markets have grown significantly, giving employees and early investors options before a traditional exit. Platforms like Forge, EquityZen, and Carta's secondary marketplace facilitate private share sales. Some companies also conduct formal tender offers — buying back shares from employees directly — as a form of structured secondary liquidity.

History and origin

The concept of a liquidity event as a defined milestone in a company's lifecycle became formalized with the growth of the venture capital industry in the 1970s and 1980s. VC fund structures require eventual liquidity — funds have a finite life, typically 10 years, and must return capital to their limited partners within that window. This created a structural imperative for the companies they invested in to pursue exit strategies within a defined timeframe.

The dot-com era (1995-2000) produced an explosion of IPOs that created enormous wealth for early startup equity holders and cemented the IPO as the aspirational liquidity event for the startup world. The subsequent bust revealed the fragility of that model and elevated acquisitions as a more reliable path to liquidity. Acquisitions by large technology companies — Google, Microsoft, and Yahoo — became the dominant form of exit for most venture-backed startups through the 2000s and 2010s.

The 2010s and 2020s introduced a new complexity: companies staying private longer. With abundant private capital available from growth equity funds, sovereign wealth funds, and crossover investors, many startups delayed their IPOs well past the traditional 5-7 year window. This created both an opportunity (higher valuations at IPO) and a problem (employees and early investors holding illiquid equity for a decade or more). The secondary market infrastructure that exists today — platforms, tender offers, structured transactions — emerged largely to solve this problem.

Frequently asked questions

What is a liquidity event?

A liquidity event is any transaction that allows shareholders to convert their equity into cash. The most common forms are acquisitions, IPOs, and secondary sales. Until a liquidity event occurs, startup equity is illiquid — it has theoretical value but cannot easily be sold or converted to cash.

What is the difference between an acquisition and an IPO as liquidity events?

In an acquisition, the company is purchased and shareholders receive cash (or acquirer stock) based on the purchase price and the liquidation waterfall. Shareholders typically receive their consideration within weeks of closing. In an IPO, shares become publicly tradeable, but insiders are usually subject to a lock-up period of 90-180 days before they can sell.

What is a secondary sale and is it a liquidity event?

A secondary sale is a transaction where an existing shareholder sells their shares to another private buyer before a traditional exit. Secondary sales create partial liquidity for individual shareholders without requiring a full company exit. They have grown significantly in popularity as private company timelines have lengthened, with platforms like Forge and EquityZen facilitating transactions.

How does a liquidity event affect stock options?

In an acquisition, unexercised vested options are usually either cashed out (the acquirer pays the spread between the strike price and the acquisition price), assumed by the acquirer, or cancelled. Unvested options may accelerate as part of a change-of-control provision. In an IPO, options typically need to be exercised before or shortly after the offering. The tax treatment varies significantly between ISOs and NSOs.

Do all shareholders benefit equally from a liquidity event?

No. The distribution of proceeds depends on the liquidation waterfall, which is determined by the cap table structure and the liquidation preferences attached to each share class. Preferred shareholders (investors) typically receive their preference amounts before common shareholders (founders and employees) receive anything. In modest exits, this can mean common shareholders receive little or nothing even after a significant acquisition.

How long does a startup typically wait for a liquidity event?

The median time from founding to exit for venture-backed startups has historically been 7-10 years, though this varies widely. Many startups never reach a traditional liquidity event. The lengthening of private company timelines in the 2010s and 2020s — driven by more available private capital — has made secondary sales an increasingly important option for employees and early investors who cannot wait for a traditional exit.

What happens to equity in a SPAC merger?

A SPAC merger is treated like an IPO for equity holders — shares in the private company are converted to shares in the newly public entity. Existing shareholders may be subject to lock-up agreements similar to a traditional IPO. The key difference is that valuation is negotiated directly with the SPAC sponsor rather than determined by the public market at listing, which creates different pricing dynamics and risk profiles.

Learn more

• Secondary markets for startup equity: how to access liquidity before an exit
• What is a cap table and why does it matter?
• What investors look for in cap tables

Related terms

• Liquidation Preference
• Cap Table
• Stock Options
• Exercise
• Lock-Up Period
• Fully Diluted Shares