Exercise Price

What Is the Exercise Price?

The exercise price, also known as the strike price, is the predetermined price per share at which you have the right to purchase company stock when you exercise your stock options. This price is set at the time your options are granted and remains fixed for the life of the option, regardless of how much the company's stock value changes over time. The exercise price is one of the most important numbers in your equity compensation package because it determines the cost of acquiring your shares and directly affects your potential profit.

How the Exercise Price Is Determined

The 409A Valuation Connection

For private companies, the exercise price must be set at or above the fair market value (FMV) of the company's common stock on the grant date. This FMV is established through a 409A valuation — an independent appraisal typically conducted by a third-party valuation firm. Setting the exercise price below FMV would violate Section 409A of the Internal Revenue Code and create serious tax penalties for the employee.

What Affects the Price

Several factors influence the exercise price you receive:

• Company stage — Earlier-stage companies generally have lower 409A valuations and therefore lower exercise prices.
• Timing relative to funding rounds — Exercise prices tend to increase after new funding rounds because the company's valuation has increased.
• Market conditions — Broader economic factors can affect private company valuations.

The Preferred Stock Discount

At private companies, the common stock price (which determines your exercise price) is almost always significantly lower than the preferred stock price paid by investors. This discount — often 60% to 90% in early-stage companies — reflects the inferior rights attached to common stock (no liquidation preferences, no anti-dilution protections, etc.) and the lack of liquidity.

Practical Implications for Startup Employees

Understanding Your Total Exercise Cost

Your total cost to exercise all your options is simply the exercise price multiplied by the number of options. If you have 20,000 options at a $1.50 exercise price, your total exercise cost is $30,000. This is money you need to come up with — either from savings, a loan, or through a cashless exercise at a public company.

In the Money vs. Out of the Money

Your options are "in the money" when the current FMV exceeds your exercise price — meaning the shares are worth more than what you would pay for them. Conversely, options are "underwater" or "out of the money" when the FMV is below your exercise price, making exercise economically unappealing because you would be paying more than the shares are currently worth.

The Value of a Low Exercise Price

A lower exercise price means a lower cost to acquire shares and a larger potential gain. Employees who join startups earlier typically receive lower exercise prices, which is one of the financial rewards for taking on the additional risk of joining a less proven company. This is why your grant date matters — options granted before a major valuation increase are inherently more valuable.

Exercise Price and Tax Liability

The exercise price directly determines the bargain element at the time of exercise, which in turn drives your tax liability. A lower exercise price means a larger spread at exercise (assuming FMV has increased), which means more taxable income or a larger AMT adjustment.

How It Relates to Exercising Stock Options

Your exercise price is the foundation of every exercise calculation. It determines your out-of-pocket cost, your bargain element, your tax liability, and ultimately your profit if the company has a successful exit. When evaluating whether to exercise, compare your exercise price to the current FMV, model the tax implications of the spread, and consider how the exercise price positions your potential return across different exit scenarios. A clear understanding of your exercise price is the first step in any option exercise strategy.