Navigating the IPO Lock-up Period

By Inyoung Hwang · September 11, 2023 · 9 minute read

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Navigating the IPO Lock-up Period

Following an initial public offering, or IPO, many companies and investment bankers will tie your stock up in a lock-up period to stop you from cashing out too quickly and help keep the share price steady.

That may be frustrating if you’re an early employee and investor in a company that’s about to go public, as you may be expecting the value of your stock to skyrocket after the initial public offering, and were hoping to sell some shares. But lock-up periods serve a purpose, and stakeholders will need to know how to navigate them.

Key Points

•   An IPO lock-up period is a period after a company goes public during which some early employees and investors aren’t allowed to sell their shares.

•   Companies or investment banks self-impose the lock-up period contractually, usually lasting between 90 and 180 days.

•   The purpose of the lock-up period is to stop early investors from cashing out too quickly and maintain a steady share price.

•   Companies may also use the lock-up period to avoid flooding the market with shares and to prevent insider trading.

•   Regular investors may want to pay attention to the lock-up period when investing in IPOs, as it can affect the risk of investing in the company.

What Is an IPO Lock-up Period?

As a part of the IPO process, the IPO lock-up period is the length of time after a company goes public, during which some early employees or investors in the company aren’t allowed to sell their shares.

These restrictions are not mandated by the Securities and Exchange Commission (SEC), but rather are self-imposed contractually by companies or the investment banks that were hired to advise and manage the IPO process.

Lock-periods can be any length of time, but usually they’re between 90 and 180 days after the IPO. Companies may also decide to have multiple lock-up periods that end on different dates and allow different groups of people to sell their shares at different times.

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How the IPO Lock-Up Period Works

Here’s an example of an IPO lock-up period: When one lock-up period ends company executives might be allowed to sell their shares, while a subsequent lock-up ending means regular employees can sell their shares.

What Does “Going Public” Mean?

When a company has an IPO, it is offering shares of the company for sale to the public stock market for the first time. The company is shifting at this point from a privately held company to a publicly traded company. This is the origin of the phrase “going public,” which you may have heard bandied around in reference to IPOs.

When a company is private, ownership is limited and can be tightly controlled. But when a company goes public, anyone can buy shares. But at this point there may be a lot of fingers in the pie already. Company founders, early employees, and even venture capitalists may already own shares or have stock options in the company.

💡 Quick Tip: Before opening an investment account, know your investment objectives, time horizon, and risk tolerance. These fundamentals will help keep your strategy on track and with the aim of meeting your goals.

What Is IPO Underwriting?

Before a company goes public it often goes through an underwriting process in which an underwriter — usually an investment bank — advises the IPO process and helps come up with the business’ valuation. The most common way they do this is by agreeing to buy a company’s entire inventory of stock.

Then to alleviate the risk of holding all of this stock, the underwriter will allocate shares of the company to institutional investors before the IPO.

The underwriter will try to drum up so much interest in the stock that more people will want it than there are shares available. This will lead to the stock being oversubscribed, which will hopefully support its price when it hits the market.

Recommended: What Sets IPO Valuations

How IPO Lock-ups Get Used

A company or its underwriters might use the lock-up period as another tool to bolster the share price during the IPO.

Shares held by the investment bank or institutional investors can be sold during an initial public offering, but the shares held by company insiders — including founders, executives, employees, and venture capitalists — may be subject to a lock-up period.

With Silicon Valley tech startups in particular, a greater proportion of compensation may be paid out with equity options or restricted trading units. In order to avoid flooding the market with shares when employees exercise these contracts, the lock-ups restrictions mean that these shareholders are not able to sell their stock until this period is over.

Recommended: Guide to Tech IPOs

What Is the Purpose of a Lock-up Period?

Ensuring Share-Price Stability

Insiders, like employees and angel investors, can potentially own far more shares in a company than are initially available to the general public. The last thing a company wants during an IPO is to have these extra shares flood the market.

Since share price is set by supply and demand, extra shares can drive down the price of the stock. And that’s not a good look, especially when a company is trying to impress investors and raise capital.

Avoiding Insider Trading

Company insiders may face other restrictions beyond the lock-up period. That’s because they might have information that can help them predict how their own stock might do that is not available to the general public.

Though insider trading can be legal if properly controlled and documented, it is not legal when based on information the public doesn’t have yet. So, depending on when a lock-up period ends, company insiders may have to wait extra time before selling their shares.

For example, if a company is about to report its earnings around the same time a lock-up period is set to end, insiders may have to wait for that information to be public before they can sell any shares.

Public Image

Finally, lock-up periods can be a way for companies to keep up appearances. When those closest to the company hold their shares, it can signal to investors that they have confidence in the strength of the company.

If company insiders start to dump their stock, investors may get suspicious and be tempted to sell their shares as well. As demand falls, the price of the stock usually does, too.

Even if the insiders were trying to cash in their stocks for no other reason than simply wanting the money, public perceptions may change and damage the company’s reputation. The lock-up period may have an effect by keeping this from happening — at least while the newly public company gets off its feet.


💡 Quick Tip: Keen to invest in an initial public offering, or IPO? Be sure to check with your brokerage about what’s required. Typically IPO stock is available only to eligible investors.

What’s an Example of a Lock-up Period?

For example, let’s say Business X — a unicorn company — went public with an IPO in March 2022. The company used a system of multiple lock-ups with different expiration dates. The first lock-up expired in July 2022, and allowed early investors and insiders to sell up to 400 million shares of the company.

As new shares hit the market the stock dropped by as much as 5%, and it closed the day down just over 1%. A second lock-up expired in August 2022, allowing regular employees to sell their pre-IPO shares in the company. When this lock-up ended, employees were allowed to sell more than 780 million shares of Business X on the open market.

What Does the Lock-up Period Mean for Employees with Stock Options?

Restrictions imposed during a lock-up period usually apply to any stock options someone has been given as an employee before an IPO. Stock options are essentially an agreement with a company that allows its employees to buy stock in the company at a predetermined price.

The thinking behind this type of compensation is that the company is trying to align employees’ incentives with its own. Theoretically, by giving employees stock options, the employees will have an interest in seeing the company do well and increase in value.

There’s usually a vesting period before employees can exercise their stock options, during which the value of the stock can increase. At the end of the vesting period, employees are able to exercise their options, sell the stock, and keep the profits.

It’s possible that the company will issue stock options before it goes public. If stock options vest before the IPO, employees may have to wait until after the lock-up period to exercise their options. However, stocks may not vest until after the lock-up period, in which case the restrictions don’t have much bearing on the employee’s ability to exercise their stock options.

How Does the IPO Lock-Up Period Affect Investors?

When buying IPO stocks as a regular investor, you likely don’t have access to shares of a company before it goes public. Even so, you still might want to pay attention to the lock-up period. Investing in IPOs can be tricky and are generally considered risky.

The underwriters will probably do everything they can to make sure that stock prices go up when company shares hit the market. But in the end, no one really knows what will happen during an IPO.

Reading the IPO Prospectus

What’s more, investors interested in buying a stock that’s about to go public don’t really have much information to go on to help them figure out what kind of value they’re getting. When they’re private, companies don’t have to divulge very much information about their inner workings to the SEC.

However, before going public they will make documents available, including the Form S-1 and the red herring prospectus that can give investors some clues about a company’s business model and what they plan to do with the money they raise. Investors can also look at what happened when similar companies went public and whether they did well.

Waiting to Buy Until After Lock-ups End

This is all to say that with little idea of what a company’s stock will do when the company goes public, regular investors may want to hold off before they invest. Investors may even want to hold off until the lock-up period is over.

When the lock-up ends and insiders and employees can finally sell their shares, the stock price may experience some volatility as the new shares enter the market, potentially causing drops in a stock’s price.

Some investors may try to take advantage of the dip that can occur when a lock-up period ends. For example, if investors see that a company’s financial health is good during the first stages of its public life, they may use the expiration of the lock-up period as a chance to buy shares at a “discount.”

They may feel that if the stock’s fundamentals were good before the lock-up ended, the company is in good financial health and the stock should rebound. Timing the market, however, isn’t necessarily a good idea for all investors, especially those not used to taking a deep dive into the fundamentals of a company’s financials. It’s also not guaranteed to produce good results.

The Takeaway

Lock-up periods are agreed-upon periods between early investors and employees of a company and underwriting investment bankers during which selling of shares is prohibited. Having such stakeholders hold off on selling their shares can help the stock price of a newly public company stay more stable.

An initial public offering’s lock-up period can be hard to navigate. Yet, they can be really exciting for investors looking to get in on the ground floor and employees or insiders looking to cash in on their shares or stock options.

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Investing in an Initial Public Offering (IPO) involves substantial risk, including the risk of loss. Further, there are a variety of risk factors to consider when investing in an IPO, including but not limited to, unproven management, significant debt, and lack of operating history. For a comprehensive discussion of these risks please refer to SoFi Securities’ IPO Risk Disclosure Statement. IPOs offered through SoFi Securities are not a recommendation and investors should carefully read the offering prospectus to determine whether an offering is consistent with their investment objectives, risk tolerance, and financial situation.

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