RSUs, Options, and ESPPs: A Plain-English Guide for Executive Women

You got the offer letter, saw the equity grant, and moved on to negotiating the number that actually mattered to you at the time: base salary. Most executive women do. Equity gets treated as a bonus you’ll figure out later, until later arrives and it’s a meaningful share of your net worth with tax rules you never sat down to learn.

You don’t need to become a tax professional to manage this well. You need to understand what you actually have, when it becomes real income, and what decisions are yours to make versus decisions already made for you by a vesting schedule. Here’s the plain-English version.

What you actually have

Most equity compensation falls into three categories, and they behave very differently.

RSUs, or restricted stock units, are a promise from your company to give you actual shares once certain conditions are met, usually just the passage of time. You don’t buy anything. On the day they vest, the shares are simply yours, and their full value becomes part of your income for that year.

Stock options give you the right, not the shares themselves, to buy company stock at a fixed price, called the strike or exercise price, regardless of what the stock is trading for later. If the stock is worth more than your strike price, that gap is where the value lives. Options come in two flavors that are taxed very differently: incentive stock options, or ISOs, and non-qualified stock options, or NSOs. Which one you have isn’t your choice. It’s determined by your company’s plan and is usually specified in your grant paperwork.

ESPPs, or employee stock purchase plans, let you buy company stock through payroll deductions, typically at a discount of around 15%, sometimes based on the stock’s price at the start or end of the offering period, whichever is lower. It’s one of the more overlooked benefits available to you, in part because participating requires an active decision rather than something that happens automatically.

The calendar that actually matters

Every one of these comes with a vesting schedule, and the schedule is often more important to your financial planning than the grant’s headline value. A grant that vests over four years with a one-year cliff means nothing converts to real value until you’ve been there a full year, then a chunk vests, then the remainder trickles in over time. Leave before a vesting date and you generally forfeit whatever hasn’t vested. This is worth knowing before you consider a job change, not after you’ve already accepted an offer elsewhere.

Pull up your actual vesting schedule, not your memory of it. Note every date this year and next where shares vest or become exercisable. These dates are when decisions need to be made, and they’re worth marking well before they arrive.

Taxation at vest versus at sale

This is where most of the confusion, and most of the expensive mistakes, happen. The short version: for RSUs and NSOs, the tax hit happens largely at vest or exercise, not at sale. For ISOs and ESPP shares, it depends heavily on how long you hold them afterward.

RSUs are taxed as ordinary income the moment they vest, based on the stock’s value that day, whether you sell immediately or not. Your company typically withholds shares or cash to cover taxes, but that withholding is usually calculated at a flat rate, 22% for supplemental income up to $1 million in a year and 37% above that, regardless of your actual tax bracket. If your real marginal rate is higher, which it likely is at this income level, you’re carrying a gap that shows up at tax time unless you plan for it. Once vested, any further gain or loss when you eventually sell is a capital gain or loss, measured from the vest date.

NSOs work similarly at the exercise step. The spread between your strike price and the stock’s value when you exercise is taxed as ordinary income immediately, again usually with that same flat withholding rate that may run short of your actual liability. From that point forward, the position behaves like any other investment: gains after exercise are capital gains, long-term if you hold more than a year past exercise.

ISOs are the one place where exercising doesn’t automatically trigger ordinary income tax. If you exercise and hold the shares for at least two years from the grant date and at least one year from the exercise date, called a qualifying disposition, the entire gain is taxed at long-term capital gains rates when you eventually sell, which is meaningfully better than ordinary income treatment. Sell sooner, in a disqualifying disposition, and a portion converts back to ordinary income. The trade-off is the AMT issue below, which is real enough to plan around deliberately.

ESPP shares follow their own version of this same logic. Hold the shares at least two years from the offering date and one year from the purchase date, a qualifying disposition, and only a portion of your gain is taxed as ordinary income, with the rest at capital gains rates. Sell sooner and more of the gain, generally the discount itself, is taxed as ordinary income instead. Which path makes sense depends on your own tax situation and how much you want to remain exposed to a single stock in the meantime.

AMT: the one that catches ISO holders off guard

If you have ISOs, there’s a wrinkle worth understanding before you exercise a large block. Exercising and holding ISOs can trigger the alternative minimum tax, a parallel tax calculation that adds back the spread between your strike price and the stock’s value, even though you haven’t sold anything and haven’t received any cash from the transaction.

For 2026, the AMT exemption is $90,100 for single filers and $140,200 for married couples filing jointly, and it phases out once income passes $500,000 single or $1 million joint. If you’re exercising a meaningful number of ISOs in one year, this is worth modeling in advance with a tax professional, not discovering when you file. Spreading exercises across multiple years is one of the more common ways to manage this exposure.

The risk hiding in your net worth

Beyond the tax mechanics, there’s a bigger picture question worth asking regularly: how much of your total net worth is now tied up in this one company’s stock, the same company your salary already depends on? Between vested RSUs sitting unsold, an accumulating ESPP position, and any exercised options, it’s easy for this number to climb well past what you’d choose if you were building a portfolio from scratch.

There’s no universal rule, but many advisors flag concentrations above 10 to 15% of total net worth as worth addressing directly. If that’s you, the fix isn’t necessarily selling everything the day it vests. It’s having a standing plan, decided in advance rather than in the moment, for what happens at each vesting date, so you’re not making a fresh emotional decision about your own company’s stock every single quarter.

What to actually do with this

If your role gives you access to material non-public information, ask your compliance team about setting up a 10b5-1 trading plan, which lets you schedule sales in advance during an open window, removing both the guesswork and any question about timing. If you don’t need that structure, a simple standing rule, like selling a fixed percentage of every vest regardless of price, accomplishes something similar.

Beyond that, three things are worth doing this quarter: pull your actual vesting calendar for the next twelve months, calculate whether your withholding is actually covering your real tax rate rather than the flat supplemental rate, and get an honest number on what percentage of your net worth currently sits in your employer’s stock. Bring all three to your financial advisor, along with your specific grant type, since ISOs, NSOs, RSUs, and ESPP shares each deserve a different strategy rather than one generic answer.

You’ve earned this equity. Managing it with the same intention you bring to the rest of your financial life is what actually turns it into wealth.

This article is for informational purposes only and does not constitute personalized financial, investment, or tax advice. Contribution limits, tax rules, and market conditions referenced here are subject to change. Speak with your own advisor, accountant, or tax professional before making decisions specific to your situation.