Most of My Net Worth Is in One Stock, What Do I Do Before I Can Sell?
When most of your net worth is tied to one company's stock, planning when and how to sell becomes essential to preserving your wealth. Whether your shares come from an IPO, restricted stock units (RSUs), stock options, or an acquisition, selling restrictions, tax obligations, and trading rules can affect your decisions months before your first sale. IPO lockup periods, Rule 10b5-1 trading plans, and potential tax liabilities all require careful coordination.
A well-structured concentrated stock diversification strategy can help you manage risk, plan tax-efficient sales, and preserve your long-term financial goals. The key is understanding your restrictions and preparing a clear selling plan before your shares become available.
Why do the decisions come before the money?
Concentrated stock can come from an IPO, a lockup expiry, RSU vesting, or an acquisition paid in the buyer's shares. Each situation involves tax and securities deadlines that may arrive before you can sell your shares.
Key considerations include:
- IPO lockup periods: These are typically private agreements, often with the banks underwriting the IPO, rather than federal requirements. The SEC notes that most lockups restrict insider sales for 180 days, although terms vary and may apply to only part of a holding.
- RSU tax obligations: RSUs that settle during the lockup can trigger a tax bill even when you cannot sell shares to cover it.
- Insider trading plans: A pre-set trading plan designed to protect insiders against insider-trading claims can require a waiting period of up to 120 days before the first sale.
- Diversifying your investments is not a bet against your employer. Bessembinder's study of US stocks from 1926 to 2016 found that:
- A majority of individual stocks failed to outperform one-month Treasury bills over their lifetimes.
- Approximately 4% of companies accounted for the stock market's net wealth creation.
The central risk is concentration: your salary, unvested equity, career, and investment portfolio may all depend on the financial performance of the same company.
What should you gather before you plan anything?
Collect these before the prospectus appears. Each one decides which rules apply to which shares:
- A list of every share and option you hold: For each: grant type, key dates, cost basis and how long you have held it.
- Your likely status: Whether you are a director or officer, and whether you could count as an affiliate (see Step 2).
- Company policies: Insider trading rules, trading windows and any ban on hedging.
- Tax baselines: Last year's adjusted gross income (AGI) and tax, plus this year's expected pay.
- Where you have lived and worked: Every state, from the date of each grant to the date it vests.
How do you work backwards from your first sale date?
In the timeline below, “L” refers to the first day you can sell your shares after the lockup expires. All deadlines are calculated backwards from this date, not from the IPO date.
| When | Decision |
|---|---|
| Before the prospectus | List every holding; confirm affiliate and officer status; read company policies |
| When the prospectus is public | Read the lockup terms that apply to your shares |
| By L minus 120 days | Directors and officers adopt a Rule 10b5-1 plan if they want to sell on day one |
| By L minus 30 days | Other holders adopt a Rule 10b5-1 plan if they want to sell on day one |
| Before each vest or exercise | Estimate the taxable income, the tax withholding will not cover, and any AMT |
| Before L | Get share restrictions removed, shares into a brokerage account, and Form 144 ready if needed |
| Before December 31 | Decide whether to sell the next batch this year or wait until January |
1. Read the lockup terms that actually apply to you
Do not assume your lockup expires exactly 180 days after the IPO. The prospectus may specify different conditions, including:
- Different lockup periods: Executives and employees may have different restrictions.
- Staged releases: Shares may become available for sale in phases.
- Early release: Some agreements allow shares to be released after an earnings announcement or if the underwriters waive the restriction.
- Different start dates: The lockup may begin when the IPO is priced rather than on the first trading day.
Check the terms that apply to your shares to determine your actual lockup expiry date (L).
2. Confirm affiliate status with securities counsel
An affiliate is someone who controls the company or is under common control with it. Your job title or percentage of shares alone does not determine your status.
Your affiliate status affects how much stock you can sell:
- Affiliates: Under Rule 144, sales within any three-month period are limited to the greater of 1% of the company's outstanding shares or its average weekly trading volume over the previous four calendar weeks.
- Form 144 requirements: Affiliates must file a Form 144 notice if they plan to sell more than 5,000 shares or $50,000 worth of stock within three months.
- Non-affiliates: Those holding shares issued under Rule 701, the exemption private companies use for employee equity, can generally sell without those limits starting 90 days after the company begins filing reports with the SEC.
If the IPO lockup lasts 180 days, eligible non-affiliates may already be able to sell under Rule 701 when the lockup expires.
3. Adopt your Rule 10b5-1 plan while you are still locked up
A Rule 10b5-1 plan schedules stock sales in advance and provides an affirmative defense against insider-trading allegations when its legal conditions are met.
Under the rules amended in 2022, the waiting period before the first trade depends on your role:
- Directors and officers: Must wait 90 days after adopting the plan or two business days after the company reports financial results for that quarter, whichever is later, subject to a maximum of 120 days.
- Other holders: Must wait 30 days after adopting the plan.
- Important considerations:
- Delayed sales: If an officer adopts the plan only after the lockup expires, the first sale may be delayed by up to another 120 days.
- Plan modifications: Changing the amount, price, or timing of trades generally restarts the waiting period.
- Single-trade restrictions: You can generally use only one single-trade plan within any 12-month period.
- Company restrictions: Your employer may permit plan adoption only during an open trading window. The lockup agreement may also prohibit sale arrangements before L unless a waiver is granted.
If no eligible trading window opens early enough, selling immediately when the lockup expires may not be possible.
4. Close the withholding gap before April
Restricted stock units (RSUs) are generally taxed as wages when shares are delivered, based on their market value on that date.
According to IRS Publication 15, employers may withhold:
- 22% on supplemental wages up to $1 million.
- 37% on supplemental wages exceeding $1 million.
For someone in the 37% federal tax bracket, the 22% withholding rate can leave up to 15 cents of every dollar of RSU income unpaid.
A sell-to-cover arrangement, where shares are sold at vesting to cover taxes, generally covers only the amount the employer withholds, which may be less than your total tax liability.
To avoid federal underpayment penalties, you generally need to pay at least:
- 90% of your current year's tax liability, or
- 100% of your previous year's tax liability.
- 110% of your previous year's tax liability if last year's adjusted gross income (AGI) exceeded $150,000, or $75,000 if married filing separately.
The IRS generally treats taxes withheld from wages more favourably than late estimated tax payments. Increasing withholding later in the year may therefore help address an earlier shortfall.
5. Check AMT before exercising incentive stock options
Exercising an incentive stock option (ISO) generally creates no regular taxable income. However, the spread between the share's value and your exercise price counts toward the alternative minimum tax (AMT) unless you sell the shares in the same calendar year.
For 2026, Revenue Procedure 2025-32 establishes the following AMT thresholds:
| Filing status | AMT exemption | Income at which exemption starts shrinking |
|---|---|---|
| Married filing jointly | $140,200 | $1,000,000 |
| Single filer | $90,100 | $500,000 |
Starting in 2026, the exemption decreases by 50 cents for every dollar of income above these thresholds, compared with 25 cents previously. This means the exemption can disappear quickly for high-earning executives.
Selling ISO shares within two years of the grant date or one year of exercise generally causes part of the gain to be taxed as ordinary income.
6. Compare staged and one-time selling with your own numbers
Selling concentrated stock gradually or all at once can affect your capital gains tax liability.
For 2026, the following rules apply:
- 15% long-term capital gains tax: Applies to gains within the first $613,700 of taxable income for joint filers.
- 20% long-term capital gains tax: Applies to gains above the $613,700 threshold.
- Other taxable income: Salary and other taxable income use up the lower tax brackets before capital gains are added.
- Net investment income tax (NIIT): An additional 3.8% applies to the lesser of your investment income or the amount by which your modified AGI exceeds $250,000 for joint filers. This threshold is not adjusted for inflation.
Example: Selling $800,000 in long-term gains
Consider a married couple with $250,000 in ordinary taxable income each year and an $800,000 long-term capital gain.
After accounting for their ordinary taxable income, 363,700remainsavailableinthe15%capitalgainsbracket(613,700 - $250,000).
Here is how the tax liability compares:
| Tax calculation | Sell all in one year | Split equally across two years |
|---|---|---|
| Total capital gain | $800,000 | $800,000 |
| Gains taxed at 15% | $363,700 | $363,700 each year |
| Tax at 15% | $54,555 | $54,555 each year |
| Gains taxed at 20% | $436,300 | $36,300 each year |
| Tax at 20% | $87,260 | $7,260 each year |
| Total capital gains tax | $141,815 | $123,630 |
| NIIT | $30,400 | $30,400 |
| Capital gains tax savings from splitting sales | $18,185 |
Splitting the sale into two $400,000 transactions results in $61,815 in capital gains tax each year, or $123,630 combined, saving $18,185 compared with selling everything in one year.
The $30,400 NIIT remains unchanged in either scenario because the full $800,000 is above the $250,000 threshold.
Important: This example excludes state taxes and assumes the share price remains constant. A decline in the stock price while waiting to sell could eliminate the tax savings.
7. Clear the practical hurdles before L
The end of the IPO lockup removes one contractual restriction, but other requirements may still apply.
Before the lockup expires (L):
- Remove share restrictions: Confirm that the transfer agent, which maintains the company's share records, will remove the restriction notices on your shares.
- Prepare your brokerage account: Ensure your shares are held in a brokerage account.
- Complete Form 144 preparations: Have the form ready if required.
On the lockup expiry date (L):
- Confirm that your shares have actually been released from the lockup.
- Check that no company-imposed blackout period still prevents you from selling.
These checks help ensure your shares are ready for sale when the applicable restrictions are lifted.
Which diversification tools fit, and what can't they fix?
Each diversification option serves a specific purpose. Whatever strategy you choose, consider the proceeds from stock sales and your remaining shares as part of one investment portfolio. Boyce's investment management approach integrates stock compensation with tax-efficient rebalancing to support this process.
| Tool | First Name | Last Name |
|---|---|---|
| Staged sales | Anne | Evans |
| Harvesting losses elsewhere | Bill | Fernandez |
| Gifts to charity or a donor-advised fund | Suits | What it cannot fix |
| Gifts to family | Holders who mainly want less single-company risk | Shares not yet sold stay exposed; does nothing about an earlier RSU tax shortfall |
| Charitable remainder trust | Holders with other investments worth less than they paid | Wash-sale rule generally disallows the loss, normally deferring it into the new shares' basis, if the same stock is bought within 30 days before or after; RSU or ESPP deliveries can count |
| Exchange fund | Holders who already intend to give | Cannot be undone; deduction for appreciated stock generally limited to 30% of AGI |
| Collars and prepaid variable forwards | Holders already planning to pass on wealth | Recipient generally takes over your cost basis, so the taxable gain passes to them; 2026 annual exclusion is $19,000 per recipient |
| Charitable remainder trust | Charitable holders who want an income stream | Annual payout must be 5% to 50% of the trust; the part left to charity must be worth at least 10% |
| Exchange fund | Large positions that can be tied up for years | Postpones tax on the gain without removing it; partnership tax rules commonly mean about seven years |
| Collars and prepaid variable forwards | Holders whose company allows hedging | Can be taxed as if you had sold (Section 1259); may be banned by company policy or the lockup |
What depends on your own facts?
Your stock-selling and diversification strategy depends on several factors:
- Affiliate and officer status: Determines the Rule 144 selling limits and the waiting period for your trading plan.
- Grant type and settlement date: Determines when taxes are due. An RSU's vesting date and tax date may differ.
- Salary and bonus: These use up the lower capital gains tax brackets first.
- State of residence: Affects your after-tax returns.
- Cash requirements: Exchange funds and charitable trusts cannot replace money you need for immediate expenses.
Your plan is on track when every stock holding has been reviewed, your trading plan is adopted before its deadline, the current year's estimated-tax safe harbor requirements are met, and your first batch of shares is ready to sell when the lockup expires (L).
Why does this call for a specialist rather than a generalist family wealth firm?
Managing concentrated stock requires careful coordination of securities-law deadlines, tax obligations, and investment decisions, often months before shares become available for sale. Working with a wealth adviser early can help you prepare for these deadlines and develop a long-term diversification strategy.
Boyce & Associates Wealth Consulting, based in Cedar Park, Texas, works with executives managing complex equity compensation. The firm brings together expertise in investment management, business valuation, and financial planning to help clients manage concentrated equity positions and long-term wealth goals.
Boyce coordinates wealth planning alongside your CPA and securities counsel, who make the final decisions on tax and securities-law matters.
Ready to build a plan for your concentrated stock holdings? Book a call to discuss investment risk, diversification, and your long-term financial goals.
FAQs
I was paid in the acquirer's stock. Is that tax-free?
Receiving stock in an acquisition does not automatically make it tax-free. Tax deferral generally requires a qualifying tax-free reorganization. In taxable deals, gains are taxed at closing. If a qualifying reorganization includes cash, gains may be taxable up to the cash received. Replacement RSUs generally remain taxable as wages, as may employment-linked earnouts. The merger agreement and tax opinion determine the treatment.
Should I wait for the lockup-expiry price drop to pass?
A lockup-expiry price drop is a historical pattern, not a reliable prediction. Field and Hanka's 2001 study of 1,948 lockups found an average three-day abnormal return of -1.5% and a lasting 40% increase in trading volume. Both effects were greater for venture-backed companies. These findings do not justify timing your sale around an expected price drop.
Can I move to a state with no income tax before selling?
Moving to a state with no income tax may not eliminate your existing state tax obligations. Your former state may tax equity compensation earned while working there during vesting, and domicile rules may still apply after relocation. Seek state-specific tax advice before moving.
Does a sell-to-cover sale conflict with my 10b5-1 plan?
Generally, no. Sell-to-cover arrangements are exempt from the restriction on overlapping Rule 10b5-1 plans when shares are sold to meet tax withholding obligations at vesting. This exception does not cover sales for diversification or paying an option's exercise price.
Blog Disclosure: This blog contains general information that may not be suitable for everyone. The information contained herein should not be construed as personalized investment advice. There is no guarantee that the views and opinions expressed in this blog will come to pass. Investing in the stock market involves gains and losses and may not be suitable for all investors. Information presented herein is subject to change without notice and should not be considered as a solicitation to buy or sell any security. Boyce & Associates Wealth Consulting does not offer legal or tax advice. Please consult the appropriate professional regarding your individual circumstance. Past performance is no guarantee of future results.
Diversification Disclosure: Diversification does not guarantee a profit or protect against a loss in a declining market. It is a method used to help manage investment risk.
TLH Disclosure: Tax-loss harvesting is a strategy of selling securities at a loss to offset a capital gains tax liability. It is typically used to limit the recognition of short-term capital gains, which are normally taxed at higher federal income tax rates than long-term capital gains, though it is also used for long-term capital gains.
CRT Disclosure:
Charitable remainder trusts are irrevocable trusts that let you donate assets to charity and draw annual income for life or for a specific time period.
