When to Exercise Stock Options: A Decision Framework for Tech Professionals

For our client base, deciding when to exercise stock options is one of the highest-stakes financial decisions you’ll face as a tech professional. There is no universal “right” answer. The timing depends on your tax picture, your company’s trajectory, and your broader financial goals.

This article breaks down the scenarios that signal it’s time to act, when selling makes sense, and tax traps to watch for.

• Your exercise timing should be driven by specific life and financial triggers, not gut feelings or market speculation.
• ISOs and NSOs have fundamentally different tax implications at exercise, and mixing them up can cost you tens of thousands of dollars.
• Starting the long-term capital gains clock early (via early exercise or strategic timing) can significantly reduce your tax burden on future gains.
• Selling after exercise isn’t a failure; it’s often the smartest risk management move, especially with concentrated stock positions.
• Coordinating with a financial advisor and tax professional before exercising helps you avoid AMT surprises and optimize your overall plan.

Stock options give you the right to buy company shares at a predetermined price, called the strike price (or exercise price). Many companies use a four-year vesting schedule with a one-year cliff, meaning you earn the right to exercise gradually over time.

There are two types you’ll most often encounter.

• Incentive Stock Options (ISOs) get preferential tax treatment if you meet specific holding requirements, but they can trigger the Alternative Minimum Tax (AMT).
• Nonqualified Stock Options (NSOs) are simpler: you pay ordinary income tax on the spread at exercise, and your employer withholds taxes automatically.

Both types typically expire after 10 years. If you don’t exercise them, they disappear.

1. Your Options Are Approaching Expiration

Stock options typically expire 10 years from the grant date. If your options are in the money, meaning the current stock price is higher than your strike price, and you let them expire, you will walk away with nothing. Set calendar reminders and check your equity portal regularly to ensure you do not leave potential value unclaimed.

2. The Spread Is Favorable

Let’s say Marcus works at Google and holds options with a $50 strike price. The current market price is $175. That $125-per-share spread represents a significant built-in gain. If Marcus believes the stock is fairly valued or he needs liquidity, exercising now locks in that value. The larger the spread, the more you stand to gain, but also the larger the tax event. That’s the tradeoff to plan around.

3. You’re Leaving the Company

When you leave a job, most companies give you a 90-day post-termination exercise period (some offer up to 6 months). Miss that window, and your vested, in-the-money options vanish. This is the “golden handcuffs” problem: leaving a company with a large options position means coming up with cash to exercise the options and cover the tax bill, all on a tight deadline. Plan ahead if you’re even considering a move.

4. You Want to Start the Capital Gains Clock

For ISOs, the tax math rewards patience. To qualify for long-term capital gains tax rates instead of ordinary income, you need to hold the shares for at least one year from exercise and two years from the grant date. This is called a qualifying disposition under IRS rules. Exercising early starts that clock sooner.

Some pre-IPO companies allow early exercise, where you buy unvested shares. If you go this route, you must file an 83(b) election with the IRS within 30 days. The 83(b) lets you pay tax on the value at the time of early exercise (often very low for early-stage companies) rather than at vesting, when the shares could be worth far more. It’s a powerful strategy, but the 30-day deadline is firm.

5. Your Company Is Filing for an IPO

Pre-IPO is a critical exercise window. If you exercise before the IPO, you start the holding period clock while shares are still relatively lower in value. After the IPO, you’ll typically face a lock-up period of about 6 months, during which you can’t sell. By exercising pre-IPO, you can potentially align your holding period with the lock-up, so you’re eligible for long-term capital gains treatment right when SEC Rule 144 restrictions lift, and you’re free to sell.

Exercising is only half the equation. Deciding when to sell is equally important, and sometimes more so.

Concentrated stock positions are among the biggest financial risks tech professionals face. If a large chunk of your net worth sits in a single company’s stock, you’re exposed to company-specific risk that diversification could reduce.

Consider it this way: if your company handed you the equivalent value in cash today, would you turn around and buy that much of their stock?

Let’s say Kate works at Adobe and just exercised options worth $300,000. If given $300,000 in cash, would she buy Adobe shares? If the honest answer is no, that’s a strong signal to sell some or all of the position and diversify.

Here are other scenarios where selling post-exercise makes sense:

• Funding major life goals. A home purchase, college funds, or seed capital for a new venture are all legitimate reasons to convert equity into cash.
• Tax-loss harvesting opportunities. If other investments in your portfolio have losses, selling appreciated stock can be offset strategically.
• Your risk tolerance has shifted. You may be closer to retirement, or your financial picture has changed. Rebalancing is smart portfolio management, not a lack of faith in your company.
• Market conditions concern you. Timing the market is different from managing risk. If your concentrated position keeps you up at night, that’s data worth acting on.

Takeaway: Selling after exercise isn’t giving up on your company. It’s building a financial plan that doesn’t depend on one stock going in one direction.

Tax planning and exercise timing are inseparable. Here are some of the most common tax dynamics to consider.

ISOs and AMT.

When you exercise ISOs and hold the shares, the spread between your strike price and the fair market value counts as an AMT preference item. The AMT rate runs 26% to 28%, and it can generate a surprise tax bill in April if you haven’t planned for it. The positive side is that AMT paid on ISO exercises may create a credit you can use to offset taxes in future years.

NSOs and withholding.

NSO exercises are more straightforward. The spread is taxed as ordinary income the moment you exercise your options. Your employer withholds at 22% federal for amounts under $1 million and 37% above that, plus applicable state taxes.

The January exercise strategy.

Exercising ISOs in January gives you nearly a full year to monitor your tax situation before the AMT bill comes due. If the stock drops after exercise, you can sell before December 31 to potentially avoid a large AMT hit on gains you never realized. Compare this with exercising in December, which gives you almost no room to adjust.

California-specific considerations.

California taxes stock option income as ordinary income with no preferential rate for capital gains at the state level. For CA professionals in the top income bracket, that’s an additional 13.3% to factor into your planning. If you’ve relocated out of California but earned options while living there, California may still claim a portion. Coordinating with a financial professional who understands California tax strategies can reduce the risk of paying more state tax than necessary.

1. Allowing stock options to expire without exercising them happens more often than many people realize. Even options that are significantly in the money can be overlooked, and the 10-year expiration window can close quietly
2. Ignoring AMT until tax season. Exercising a large block of ISOs without modeling the AMT impact first can result in a six-figure tax bill you didn’t budget for. Remember to run the numbers before you exercise.
3. Holding too much concentrated stock. Post-exercise, many people hold all their shares hoping for more upside. That’s speculation, not a plan. Diversification exists for a reason.
4. Making emotional decisions. Fear of missing out (“what if it doubles?”) and fear of loss (“what if I sell, and it tanks?”) are both poor decision-making frameworks. Instead, establish a disciplined, rule-based plan and follow it consistently.
5. Going it alone. Stock option decisions sit at the intersection of tax law, investment strategy, and financial planning. Working with a financial advisor who understands equity compensation can help you see angles you’d miss on your own.

If you’re sitting on stock options and wondering whether now is the right time, the answer starts with understanding your full financial picture: your tax bracket, your vesting schedule, your goals, and your risk tolerance.

Summitry works with equity compensation-holders every day on exactly these decisions. If you want a second opinion or a comprehensive exercise strategy, we’re happy to help you get a clear understanding of your financial picture.

What happens to my stock options if my company gets acquired?

It depends on the deal structure. In a cash acquisition, your vested options are typically cashed out at the acquisition price minus your strike price. In a stock-for-stock deal, your options may convert into options in the acquiring company. Unvested options might accelerate (single- or double-trigger), be assumed, or be cancelled. Each scenario has different tax consequences. Read more in our guide on what happens to your equity when your company gets acquired.

What’s the difference between exercising and selling stock options?

Exercising means purchasing shares at your strike price. You now own actual stock. Selling is a separate transaction where you sell those shares on the open market (or back to the company). You can exercise and hold, exercise and sell immediately (same-day sale), or exercise and sell later. Each approach carries different tax treatment and risk profiles.

Should I exercise stock options if my company is private?

You can, but there are complications. Private company shares have no public market, so selling isn’t straightforward. Employees need cash to cover the exercise cost and potential taxes without the ability to do a same-day sale. The upside? If you exercise early (especially with an 83(b) election), you start the capital gains clock at a low valuation. If the company eventually goes public or gets acquired at a higher price, the tax savings can be substantial. The risk is real: if the company fails, you’ve spent money on worthless shares with no way to recover it.

Can I exercise stock options after I leave my company?

Yes, but only within your post-termination exercise period. For most companies, this is 90 days after your last day. Some companies (particularly startups) have extended this to six months or even longer. Check your option agreement for the exact terms. Once that window closes, any unexercised vested options are forfeited permanently. If you’re planning a job change, model out your exercise costs and tax impact before you give notice.

This material is intended for general informational purposes only, and should not be construed as legal, tax, investment, financial, or other advice. It does not consider the specific investment objectives, tax, and financial condition or needs of any specific person. To the extent that this material concerns tax matters, it is not intended or written to be used, and cannot be used, by a taxpayer for the purpose of avoiding penalties that may be imposed by law. Investing involves the risk of loss, including loss of principal. Any examples are meant for illustrative purposes only and do not represent actual clients or their experiences. There can be no guarantee that experiences will be similar to those used as examples in this article and some may experience negative results. Prices are not taken from actual stock prices and are designed to make the example clear and simple to understand. The securities identified and described do not represent all of the securities purchased, sold or recommended for client accounts.  The reader should not assume that an investment in the securities identified was or will be profitable.