Startup options are not cash: check vesting, exercise price, expiration

A startup option is a timed right to buy shares at a set price, not cash. It can be worth little if you miss the vesting, exercise, or sale window. Equity compensation was very important to 76% of stock-plan participants in a 2025 Schwab report. That importance does not make the grant self-explaining. You need to check the numbers before the grant becomes a promise without terms.

The trap is a grant that looks like a number

The headline share count is only a starting point. The exercise price is the amount you pay per share if you buy the shares. Vesting decides when you earn the right to buy. Expiration decides when the right dies. A liquidity event is the moment a buyer appears, and without it the shares have no sale path.

The five terms decide whether the grant is real

Use this five-point option check to turn the grant into a decision:

• Count only vested shares; many corporate equity grants vest over four years, with a one-year cliff, a waiting period before any shares vest.
• Compare the exercise price to current value. For nonqualified stock options, the option type outside the special incentive stock option (ISO) path, Section 409A, a tax rule, generally requires the exercise price to be no lower than the stock's fair market value, its estimated value.
• Mark the expiration date and the post-departure window, the time you have to exercise after you leave. Options often expire ten years after grant, but leaving the company can shorten that window.
• Confirm a liquidity event is possible; without a sale path, the shares have no buyer.
• Check the tax holding period. Favorable ISO treatment generally needs a minimum one-year holding period after exercise and a minimum two-year holding period after grant. For an incentive stock option, the option with a special tax path, the profit may be taxed as capital gain if you hold the shares until whichever comes later: two years after grant or one year after exercise.

The documents that make the check real

Ask the finance team for the grant agreement, the latest valuation, and the plan document. The grant agreement gives the original terms, the valuation shows the current share price used for exercise decisions, and the plan document explains what happens when you leave. If any answer is vague, ask for the written term, not a verbal estimate.

If the company is private, the current value may come from a periodic valuation. Treat that number as a reference point, not a guaranteed sale price. A private company can have a high internal value and still have no near-term buyer. The useful question is whether you can exercise, hold, and sell without paying more than the shares are worth to you.

Exercise decisions also involve cash. You need money to buy the shares at the exercise price, and you may need money for taxes. If you cannot pay the exercise price, the option is not a usable asset even if the paper value looks large. If you can pay it, compare the cash outlay to the expected value after taxes.

Before you act, get a tax professional to review the option type, your holding period, and your expected sale date. The tax clock can change the best time to exercise, and a small mistake can turn a favorable outcome into an expensive one. Keep the written answers in one place so you can recheck them when the company raises money, changes its valuation, or talks about an exit.

Keep the decision current as the company changes

When the answers are in front of you, make a simple decision table. Use columns for the number you can use today, the date that changes the answer, the cash you would need, and the tax question to ask. This keeps the grant from becoming a vague number.

When the company is raising money, ask how the new financing affects the current reference value and whether your grant terms change; if it is preparing for an exit, check how shares will be sold and whether you can exercise before the sale. In a quiet period, request the next date you should expect a valuation or plan update.