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Key Takeaways:
- Know how your equity is taxed. RSUs and RSAs have different rules that can affect your taxes and planning.
- Watch for concentration risk. Too much company stock can leave your financial future tied to a single employer.
- Have a diversification plan. Selling, holding, or donating shares should fit your overall financial goals.
For many professionals in tech, biotech, and other high-growth industries, company stock starts as a valuable part of compensation. It can eventually become one of the largest pieces of their net worth. That ownership may come through RSUs, Restricted Stock Awards (RSAs), or stock options. The challenge is that a benefit designed to reward your work can quietly become a concentration risk if too much of your financial future depends on a single company.
This guide walks through the two decisions that matter most. First, understanding how RSUs and RSAs work, including how they are taxed and what changes when equity comes from a private company. Then, once those shares become a meaningful part of your wealth, you will need to decide how to manage the concentration that comes with them.
Understanding Restricted Stock Units (RSUs)
RSUs are probably the most common type of equity comp out there, and you’ll see them at big private companies just as much as public ones. An RSU represents a promise from your employer to deliver shares once you satisfy the requirements of the grant, usually tied to time or performance. Until those requirements are met, you do not own the shares. Think of an RSU as a future ownership opportunity rather than stock you already hold.
For some employees at fast-growing companies, RSUs can represent a significant portion of total compensation. That makes understanding how they vest, how they are taxed, and what to do with the shares afterward an important part of broader financial planning.
Grant date vs. vest date
Every RSU grant carries two key dates.
The grant date is when your company commits to award you the shares, subject to conditions you still have to meet.
The vest date, sometimes called the settlement date, is when those conditions are satisfied, and the shares actually land in your stock plan account.
The vesting period is designed to encourage employees to stay with the company and continue contributing to its long-term success. Instead of receiving fully owned shares immediately, employees earn ownership over time as the vesting requirements are met.
Vesting schedules
Cliff Vesting: All of your RSUs vest at once, whether the trigger is time-based or performance-based.
Two typical ways RSUs vest.
Graded Vesting: Shares vest incrementally, often in equal installments over four or five years, or in an uneven pattern, such as 40% after year one, followed by 20% per year for the next three years.
Once you leave your employer, unvested RSUs typically stop vesting, though some companies build in exceptions for retirement. Microsoft is a well-known example: its “55/15” rule lets any stock grant more than a year old continue vesting after retirement for employees who are 55 or older with at least 15 years of continuous service, or who reach age 65.
RSUs vs. stock options
RSUs are generally simpler and lower risk than stock options. With options, you only earn money if the stock’s market value climbs above the price at which you were granted the option. RSUs carry inherent value the moment they vest instead. They become real shares regardless of where the price has moved, which is part of why they’ve become a more common tool for retaining talent.
How RSUs are taxed
RSU taxation is one of the areas where mistakes can become expensive. The key point to understand is that vesting creates a taxable event, even if you decide to keep the shares.
When your RSUs vest, their value is treated as ordinary income based on the stock’s trading price on the day they vest. For example, if 100 shares vest when the stock is trading at $50 per share, $5,000 is generally reported as ordinary income on your W-2.
This is different from stock options, where you don’t owe anything until you actually exercise and sell. RSUs get taxed the moment they vest, whether you sell right away or keep holding the shares. Holding the shares after vesting does not defer the income tax that was triggered when the shares vested.
Your cost basis becomes the fair market value on the vest date, and from there, any price changes are treated as a regular capital gain or loss.
The withholding surprise most people miss
Companies typically withhold shares to cover the tax bill at vesting, so if 100 shares were scheduled to vest, you might only see 60 hit your account, with 40 withheld for taxes. The complication is that many companies withhold taxes using a flat supplemental wage rate rather than your actual marginal tax rate. For income under $1 million, that rate is 22%. Above $1 million, it jumps to 37%.
For many tech professionals and executives, 22% sits well below their actual marginal tax bracket, which is exactly why RSU vesting so often produces an unpleasant tax bill surprise the following April. It’s worth logging into your stock plan account periodically to review and, where possible, adjust your withholding elections.
Can RSUs trigger a wash sale?
Yes, RSUs can create wash sale issues, particularly for employees who regularly sell shares at a loss while continuing to receive new shares through vesting. A wash sale happens when you sell a stock at a loss and buy back the same or a substantially identical security within 30 days before or after that sale, which disallows the loss for tax purposes. Because RSU vesting is effectively a stock purchase at fair market value, employees at companies with frequent, even monthly, vesting schedules can inadvertently trigger wash sales when trying to harvest losses on shares of the same company.
RSUs at private companies: double-trigger vesting
Private companies commonly use “double trigger” vesting for RSUs. The first trigger is time-based, just like at public companies. The second trigger is event-based, typically tied to a liquidity event such as an IPO or acquisition.
Double-trigger vesting addresses a common challenge with private company equity: employees may owe taxes on shares they cannot yet sell.
Without a market to sell shares in, employees at a private company would owe tax on vested RSUs with no way to raise the cash to pay it. Facebook was among the first major companies to address this by delaying the taxable event until a second, liquidity-based trigger is satisfied, a structure many private companies have since adopted.
Restricted Stock Awards and Founder’s Stock (RSAs)
RSAs, often called founder’s stock, work differently from RSUs even though the names sound similar. Where an RSU is a promise of future shares, an RSA is actual stock, issued to you now, with all the rights that come with real ownership (including, in many cases, dividend distributions), subject to specific conditions.
When RSAs are granted, the company will often hold the shares in escrow until they vest, and in some cases, you’ll pay a nominal purchase price based on the company’s fair market value at the time.
What actually makes RSAs “restricted”
A lot of people assume the “restricted” in RSAs just means you can’t sell the shares right away. That’s true, but it’s only part of the story. There are actually two things restricting your shares. Recipients, especially at private companies, usually can’t sell on secondary markets unless they’ve met certain requirements, like a minimum holding period. On top of that, the shares are still subject to a vesting schedule and can be forfeited, as spelled out in a Restricted Stock Award Agreement (RSAA).
Every RSAA looks a little different, but a common setup is a one-year cliff followed by monthly vesting over the next three years, for a total of five years until you fully own the shares. And if you leave the company before that, whether you quit, get fired for cause, or leave some other way, you typically forfeit whatever hasn’t vested yet.
Selling restrictions
Vested RSA shares can also fall under SEC Rule 144, which governs the sale of restricted and control securities. Depending on your company’s situation, selling may hinge on a minimum holding period after vesting (commonly six months to a year), the company’s compliance with SEC reporting requirements, trading volume (particularly relevant if your company trades over the counter but is thinly traded), and additional reporting requirements before sale that typically apply to leadership and large shareholders.
The 83(b) election
With an RSA, you have a tax choice that RSU holders generally don’t. Because an RSA is actual stock issued to you at grant, you can file an 83(b) election within 30 days of the grant and choose to be taxed on the value of the shares now, at grant, rather than as they vest.
For founders, this often matters a great deal. Early on, the stock may be worth almost nothing, so the tax at grant can be tiny or close to zero. Electing to be taxed then does two things. It locks in a low ordinary-income amount up front, and it starts your long-term capital gains holding period at grant. If the company grows, most of the future appreciation is taxed as long-term capital gain when you sell, rather than as ordinary income at each vest date.
The tradeoff is timing and risk. The 30-day window is strict, with no extensions. And if you pay tax at grant and later forfeit the shares by leaving before they vest, you generally don’t get that tax back. The election tends to make sense when the current value is low, and you expect the shares to appreciate. It makes less sense once the shares already carry a high value.
One point of confusion worth clearing up: standard RSUs are generally not eligible for an 83(b) election, because you don’t own the shares at grant, only a promise of future ones. The election applies to RSAs and to early-exercised stock options, not to ordinary RSUs.
A note on QSBS
If your founder’s stock is in a C corporation that qualified as a small business when the shares were issued, it may count as Qualified Small Business Stock under Section 1202. Hold it long enough (generally five years) and a meaningful portion of the gain on a sale can be excluded from federal tax. The qualification tests are specific and easy to miss, so it’s worth confirming eligibility with a tax professional early, well before any liquidity event, rather than discovering the opportunity after the fact.
Should You Sell or Hold Vested Shares?
Once RSUs or RSAs vest, the question changes from “What did my company grant me?” to “How much company stock do I actually want to own?”
Selling immediately locks in the current value and reduces risk. Holding gives you upside if the stock continues to perform, but exposes you to the risk of a decline, including the uncomfortable scenario of owing tax on a value the stock no longer holds.
A useful way to think about it is to treat vested RSUs as a cash bonus rather than stock. If your company gave you a $50,000 cash bonus instead of shares, would you choose to invest that entire amount back into company stock today? If yes, holding makes sense. If not, that’s a signal to sell and redeploy the cash elsewhere.
It’s generally advisable to sell shares soon after vesting to limit concentration risk. Your income and benefits are already tied to your employer’s fortunes, and unvested RSUs already give you ongoing exposure to the company’s growth on top of that. Every person’s situation is different, but it’s worth periodically reviewing how much of your net worth is tied up in your employer’s stock.
Tax Planning Strategies for RSUs
A few moves can make a real difference in what you keep after taxes as your equity vests.
One option is to sell your RSUs as they vest and use the proceeds to cover your regular expenses. That frees up your salary or bonus to go toward other tax-advantaged accounts, your 401(k), an ESPP, or a nonqualified deferred comp plan. A lot of people skip deferred comp because they need the cash flow now, but if RSU proceeds are covering that gap, you can put money into deferred comp instead.
Withholding is another one worth checking. We mentioned earlier that companies usually withhold at a flat 22%, which often isn’t enough to cover what you actually owe. Review your withholding periodically, and if you can’t change the rate directly, you may need to make estimated tax payments to avoid an underpayment penalty later.
A Donor-Advised Fund (DAF) is also worth considering if a large RSU vesting event is going to spike your taxable income in a given year. Bunching several years of planned charitable giving into a DAF gets you the full deduction in the year you contribute, lets the funds be invested and grow tax-free, and lets you distribute to charities on your own timeline afterward. If you’re also sitting on old, highly appreciated company stock, contributing those shares to a DAF avoids capital gains tax, earns a deduction for the full value, and reduces your concentration in that stock all at once.
Finally, don’t overlook tax loss harvesting. If you have a large vesting event coming up, or older shares with embedded gains, look across your broader portfolio for positions with losses you could realize to offset those gains.
Understanding Concentrated Stock Risk
Many concentrated stock positions begin with something positive: successful compensation, a long-held investment, or ownership in a growing company. The challenge comes when one position becomes large enough to influence your entire financial picture.
RSUs, RSAs, stock options, even the company match in your 401(k), it all adds shares of one stock to your portfolio. If you’re not selling any of it off, the position can continue growing until it represents a much larger share of your overall wealth than you originally intended.
Most experts put the threshold for “concentrated” at 20% or more of your total portfolio. A good example of how this plays out: a 39-year-old software engineer once went public with a portfolio worth $12 million, every bit of it in a single company’s stock, built from shares he’d bought years earlier at a fraction of their current value. Instead of selling any of it, he planned to borrow against the position to cover his living expenses and stay fully invested in that one stock.
Concentrated positions can create extraordinary wealth, especially when you own a company that performs well. They can also create significant downside risk when too much of your financial life depends on a single investment.
For every investor who rides a concentrated position to a life-changing outcome, many more don’t get so lucky. The data backs this up. Only a minority of individual stocks in the S&P 500 have historically outperformed the index average over any given multi-decade stretch, and a small number of exceptional performers disproportionately drive market returns. If you’re holding a concentrated position, base rates suggest it’s more likely to underperform the broader market than to replicate its past performance.
Why do concentrated positions happen
There’s usually one of a few explanations. Employer stock compensation is the most common, built up through RSUs, RSAs, stock options, or 401(k) matching contributions accumulated over years at one employer.
Inheritance is another, where a long-held family position is passed down, sometimes with deep sentimental attachment.
Sometimes, it’s simply organic appreciation, where a stock purchased long ago grows far larger than the rest of the portfolio.
Why it’s worth addressing
A single stock is inherently more volatile than a diversified portfolio, and a large single-stock position gives that volatility outsized influence on your overall wealth. If the position is your employer’s stock, there’s an added wrinkle. A downturn in the company’s fortunes can hit your portfolio, your paycheck, or even your job at the same time.
More often than not, the real barrier to addressing concentration isn’t taxes. It’s psychology. “Anchoring” is the tendency to base decisions on a reference point, such as a stock that has performed exceptionally well in the past or has deep personal or family history attached to it.
A stock can have a great history and still deserve a fresh evaluation. The question is not whether the company has rewarded you in the past. The question is whether owning the same amount today still fits your goals and risk tolerance.
Strategies to Manage a Concentrated Stock Position
The right approach depends on the details: your tax situation, future income, timeline, goals, and how much exposure you are comfortable carrying.
Below are some common strategies investors use to manage concentrated stock risk, starting with approaches that gradually reduce exposure and moving toward more immediate solutions.
Structured selling. One option is to sell gradually, usually over three to five years. Spreading the sales out spreads the tax bill too, which matters if you think your income or bracket might change soon, and it keeps you from dumping the whole position at once into a bad price. The downside is obvious: you’re still holding a big chunk of stock and still exposed to it, the whole time you’re selling down.
Charitable giving. Charitable giving works well if you don’t need the full value of the position to meet your future spending needs. Donate the shares directly, or put them into a Donor-Advised Fund, and you get an immediate deduction while sidestepping the capital gains tax a sale would trigger. (As noted in the RSU tax section above, a DAF also lets you decide later which causes get the money and when.) The tradeoff here is permanent: once the shares are donated, you no longer own them, and any future upside belongs to the charity.
Option strategies. You can also manage the risk with options instead of selling outright. Buying puts sets a floor under your downside, which is worth it if you think the stock is overpriced or due for a rocky stretch, but you’re paying a premium every time you do it, and that adds up. Selling covered calls goes the other direction: you collect income now in exchange for capping your upside, so if the stock takes off past your strike price, that extra gain isn’t yours anymore.
Exchange funds. Exchange funds are a less common tool but worth knowing about. You hand your shares over to a pooled fund alongside other investors with their own concentrated positions, and in return you get a share of the whole diversified pool, all without triggering taxes. The catch is eligibility and time. Traditional exchange funds require qualified-purchaser status, meaning at least $5 million in investments, though some newer funds have opened to accredited investors at lower minimums. Your money is locked up for a minimum of seven years to preserve the tax treatment, and annual fees commonly run from roughly 0.5% to 1.5%, sometimes higher. There’s real cost and commitment to clear before this pays off.
Stock protection plans. A newer and less common approach has investors contributing cash, not stock, into a shared pool invested in U.S. government bonds, which is then used to reimburse participants who experience losses in their own concentrated positions. It functions like insurance against a large decline, pooling risk across investors in different, often countercyclical industries. It’s expensive, though. A typical structure requires a 10% contribution to the position’s value. If your stock doesn’t decline over the life of the plan (usually five years), you forfeit that entire contribution with no tax benefit in exchange.
Exercising options and using stop orders. If part of your concentrated position is in stock options, you’ll need a plan for exercising them and managing the resulting tax exposure, including watching for AMT exposure with incentive stock options. For vested shares you’re not ready to sell outright, a stop order (a sell order that triggers once the price falls to a set level) can help protect gains, though it isn’t a perfect safeguard against a fast-moving price drop.
Selling it all now. And sometimes the simplest move is just to sell everything at once. It’s the least tax-efficient way to do it, and it can feel like a big step to take all at once. But if you’re ready to be done with the position and would rather cut the risk than squeeze out every last tax advantage, there’s nothing wrong with a clean break. Not having to think about every move of one stock anymore is worth more than people give it credit for.
Frequently Asked Questions About RSUs and Concentrated Stock
1. Are RSUs taxed when they vest or when they are sold?
RSUs are generally taxed when they vest, not when you sell the shares. The value of the shares on the vesting date is treated as ordinary income and is typically reported on your W-2. If you continue holding the shares after they vest, any future gain or loss is generally treated as a capital gain or loss when you eventually sell.
2. Should I sell my RSUs as soon as they vest?
Selling RSUs immediately after vesting is a common strategy because it helps reduce concentration risk and treats the shares more like a cash bonus than a long-term investment. However, the right decision depends on your overall financial plan, tax situation, confidence in the company, and the extent to which your net worth is already tied to employer stock.
3. How much company stock is too much?
There is no universal threshold that applies to everyone, but many investors consider a position of 20% or more of your portfolio to be concentrated. For employees, the risk can be even greater because your income, benefits, and investment portfolio may all depend on the same company’s success.
4. What happens to my RSUs if I leave my company?
In most cases, unvested RSUs are forfeited when you leave your employer. Vested RSUs remain yours, and you can typically continue to hold or sell those shares based on your goals and any company trading restrictions. Some companies have special provisions for retirement or other circumstances, so it is important to review your specific equity agreement.
5. How can I reduce risk if I have a large amount of company stock?
Reducing concentration risk can take several forms, including gradually selling shares, diversifying into other investments, donating appreciated shares to charity, using tax-planning strategies, or exploring more advanced tools, depending on your situation. The best approach depends on your timeline, tax exposure, and the level of risk you are comfortable carrying.
6. Are RSUs better than stock options?
RSUs and stock options serve different purposes. RSUs generally provide more predictable value because they convert into shares upon vesting, regardless of the stock price. Stock options can offer greater upside but only have value if the company’s stock price rises above the exercise price. The better choice depends on the company, your goals, and your willingness to take risks.
7. How do I know if my company stock has become a problem?
A concentrated position becomes a concern when a decline in that stock would meaningfully affect your ability to meet your financial goals. If losing a large portion of your company stock would change your retirement plans, lifestyle, or financial security, it may be time to review your diversification strategy.
8. Can I diversify private company stock before an IPO?
Sometimes, but the options are more limited than with publicly traded shares. Private company employees may face transfer restrictions, limited liquidity, and requirements for company approval. Depending on the circumstances, strategies may include secondary sales, company-sponsored liquidity programs, or planning around a future IPO or acquisition.
9. Should I exercise stock options before they expire?
The right time to exercise stock options depends on several factors, including the type of option, your tax situation, the company’s outlook, your cash flow, and your risk tolerance. Incentive stock options (ISOs), in particular, require careful planning because exercising can create alternative minimum tax (AMT) considerations.
10. What is the biggest mistake people make with equity compensation?
One of the most common mistakes is treating company stock as separate from the rest of your financial life. Equity compensation can create significant wealth, but it also creates exposure to a single company. A good plan considers when to hold, when to sell, and how those decisions fit with your broader goals.
Finding the Right Approach for You
Equity compensation looks different at each stage. A founder preparing for a liquidity event, an executive with years of accumulated stock heading into retirement, and someone earlier in their career all face the same core question from different angles: how much of your financial life do you want tied to one company?
That question gets sharper the closer you are to needing the money. A concentrated position that felt fine during your working years can become the biggest risk in your plan once a paycheck is no longer covering your expenses. The right strategy depends on your goals, your timeline, and how much risk you’re willing to carry into the next chapter.
At Bull Oak, we work with executives, founders, and business owners who are approaching or entering retirement with significant company stock. We help turn that equity into a coordinated financial plan, from managing taxes and concentration risk to deciding when and how to diversify.
