Read how the SpaceX, Anthropic & OpenAI IPOs will Reshape Family Offices.

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These IPOs are not just going to create 375 to 850 new single-family offices. They are also going to trigger liquidity events for existing family offices that already hold positions in these companies through private equity and venture funds. Two very different groups of people, facing the same fundamental challenge: a major influx of capital and no clear playbook for what to do next.

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First, Understand What You Actually Have

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Not all equity is created equal. Most employees at SpaceX, Anthropic, and OpenAI hold either stock options or RSUs, and they are taxed very differently.

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RSUs vest and become ordinary income at the time of vesting. An IPO triggers that tax event. RSUs are taxed when they vest, with the fair market value of the shares treated as ordinary income. Any subsequent appreciation may trigger capital gains taxes when the shares are eventually sold.

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Stock options work differently depending on the type. Non-qualified stock options (NSOs) are taxed as ordinary income at exercise. Incentive stock options (ISOs) have no regular tax at exercise but may trigger the Alternative Minimum Tax (AMT), with long-term capital gains applying if holding requirements are met.

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There is also an important restriction to be aware of: employees cannot sell immediately after an IPO. Lockup agreements prohibit company insiders, including employees and large shareholders, from selling their shares for a set period after an IPO — typically up to 180 days. SpaceX has structured its lockup differently: rather than a single expiry, employees have a staggered release schedule, with 20% of eligible shares unlocking after Q2 earnings, followed by a series of time-based and performance-based tranches through the first 180 days.

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The bottom line: before you can plan what to do with your proceeds, you need to know what type of equity you hold, when it vests or can be exercised, and what your tax obligation will be when it does.

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Then, There Are the Existing Family Offices

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Many families already have indirect exposure to these companies through positions in private equity and venture capital funds. When a company like SpaceX or Anthropic goes public, those funds will often sell their positions to generate liquidity for investors. That means distributions are coming, and so are the tax bills.

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These families need to estimate what their tax payable will be, what their after-tax cash looks like, and how to deploy it intelligently. 

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How MyFO Helps: Estimate Your Tax Liability Before You Act

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The biggest mistake people make after a liquidity event is reinvesting without a plan. They sell, redeploy, and then discover the tax consequences after the fact. MyFO helps both individuals holding RSUs or stock options and existing families receiving distributions from PE and VC funds model their full picture before making a move.

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MyFO's Scenario Modelling tool lets you run the numbers before any decision is made. Using the asset's existing cost basis and stored tax rate, the platform calculates your estimated gain, estimated tax payable, and net after-tax cash proceeds for any hypothetical transaction. You know what you are actually walking away with before you sign anything.

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Whether you are an employee deciding when to sell vested shares or a family office modelling an incoming fund distribution, you can map those inflows alongside your existing obligations to understand when cash arrives, what you owe, and what is left to deploy.

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What Do You Do With the After-Tax Cash?

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This is the question most newly liquid families are not prepared to answer. Tech exit families tend to follow a recognizable pattern: they want to stay close to what they know. Many tech employees who reach a liquidity event go on to become angel investors themselves, re-deploying proceeds into early-stage startups, venture funds, and direct tech investments. But wanting to diversify and knowing how to diversify are two different things.

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MyFO's Asset Allocation Benchmarking gives you a clear picture of what your portfolio looks like across asset classes, compared to where you want it to be. Want to benchmark your allocation against endowment funds or large institutional investors? You can do that. Thinking about adding more private equity, moving into real assets, or keeping a portion in public markets? You can model what each of those moves does to your overall allocation before committing a dollar.

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The goal is simple: make intentional decisions, not reactive ones.

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Then Forecast What It All Looks Like Going Forward

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Once you know your allocation, the next question is: what does this actually produce over time?

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MyFO's Net Worth Forecasting builds a long-term trajectory from your current asset values, expected returns per asset class, and annual lifestyle spend. Run it across a 5, 10, or 15 year horizon and you get a clear answer to the question every newly liquid family is quietly asking: "If I change nothing from here, am I compounding or decaying?"

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For families with private market positions, the Cash Flow Forecasting module goes deeper. PE funds, VC commitments, and co-investments each have their own capital call schedules and distribution timelines. MyFO models all of them simultaneously so you can see your projected cash position year by year, identify where obligations overlap, and plan accordingly.

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You do not need a spreadsheet for every fund. You need one platform that connects them all.

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The Window to Get This Right Is Now

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The months between a lock-up expiry and the first major redeployment decision are the most consequential financial period most of these families will ever face. The ones who plan in advance, model their tax exposure, think carefully about allocation, and forecast the long-term impact of their decisions will come out ahead of those who react.

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MyFO is built for exactly this moment.

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This blog post is for informational purposes only and does not constitute financial, tax, or legal advice. Tax treatment of equity compensation varies based on individual circumstances, equity type, and jurisdiction. Readers should consult qualified tax and financial advisors before making any decisions.

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