Much of the wealth in a Boston-area divorce has not been paid yet. Carried interest in a fund that will not complete distributions until the 2030s, founder shares in a company waiting on trial results, restricted stock units vesting across the next four years, deferred compensation at a large asset manager. None of it has a clean present value, all of it carries real risk of being worth nothing, and dividing it by writing a number on a settlement schedule is how people end up with agreements that make no sense five years later. Sorting this out is a substantial part of what a high net worth divorce financial planner in Boston does in cases involving private equity, venture, and life sciences compensation.
Is unvested equity marital property in Massachusetts?
Often yes, at least in part. Massachusetts is an all-property equitable division state, meaning a court may assign to either spouse any part of the other’s estate, applying the statutory factors rather than a fixed formula.
The Supreme Judicial Court addressed unvested stock options directly in Baccanti v. Morton, holding that options granted during the marriage are subject to division even though they had not vested, and describing a time-based approach to determining the marital portion. The general principle extends to other forms of unvested compensation, with the analysis turning on when the interest was granted and what it was granted for.
The question that drives most disputes is purpose. A grant made to reward work already performed during the marriage looks different from one made to retain an employee going forward, and grants that straddle the separation date frequently contain elements of both.
How does a court handle something that has not vested?
Typically through a formula that identifies the marital share and a deferred distribution mechanism rather than a payment today. The marital portion is commonly determined using a fraction based on time, with the period from grant to the end of the marriage measured against the full period from grant to vesting.
From there the settlement usually provides that the employee spouse holds the interest and transfers the agreed share if and when it is received. That structure shares both the upside and the risk of forfeiture, which is generally a more honest reflection of the asset than a present value buyout.
The alternative is an offset, where the non-employee spouse receives other assets today in exchange for giving up the interest. Offsets require someone to fix a number on something inherently uncertain, and both spouses should understand that whichever way the asset eventually performs, one of them will look to have made the better trade in hindsight.
What makes carried interest so difficult to value?
Carried interest is the fund manager’s share of investment profits, customarily around 20 percent of gains above a preferred return to limited partners. It becomes payable only as portfolio investments are realized, which in a typical private equity fund means distributions spread across a decade or more after the fund closes.
Several features complicate any valuation. The carry itself usually vests over a period of years. Departure from the firm can trigger forfeiture provisions depending on the circumstances of the exit. Clawback obligations may require the general partner to return distributions if later results disappoint, so money already received is not always final. And any current estimate of value rests on marks assigned to illiquid holdings, which are judgment-based rather than observable.
An estimate built on today’s portfolio marks is an estimate, not a value. Settlements that treat it as a value tend to age badly.
Can carried interest actually be transferred to a spouse?
Usually not. Limited partnership agreements and firm operating documents routinely prohibit transferring a general partner interest to anyone outside the partnership, and many require consent even among partners.
That is why these settlements rely on the employee spouse receiving the distribution and remitting an agreed share. Those provisions need to address what happens if the spouse leaves the firm, how clawback obligations are allocated, what reporting the other spouse receives and how often, and what security exists if payments are not made. Drafting that language is legal work, but the questions it has to answer are financial ones.
What is different about biotech equity?
Binary outcomes and trading constraints. Equity in a clinical-stage company can move dramatically on a single trial readout, and a position that supports a settlement projection one quarter may not the next.
Practical constraints also apply. Post-IPO lockup periods restrict sales for a defined window. Insiders face trading windows, preset trading plan requirements, and volume limitations on resale. A settlement assuming shares can be sold on a particular date should be checked against what the securities rules and company policy actually permit.
Does a QDRO handle any of this?
No, and the assumption causes problems. A qualified domestic relations order applies to qualified retirement plans. It does not reach stock options, restricted stock units, carried interest, or nonqualified deferred compensation.
The tax treatment of transfers involving compensatory equity is its own subject. IRS guidance addresses the transfer of nonstatutory stock options and nonqualified deferred compensation between spouses incident to divorce, including how income and employment taxes are reported, and incentive stock options generally lose their favorable status if transferred. Federal rules also impose a holding period requirement for certain partnership interests to qualify for long-term capital gain treatment on carried interest. These points should be reviewed with a tax professional for any specific agreement.
How a high net worth divorce financial planner in Boston models these assets
The approach is scenario-based rather than single-number. That generally includes obtaining and reading the governing documents, identifying the marital portion of each grant, modeling a range of outcomes including the possibility that an interest pays nothing, comparing an if-and-when structure against an offset on an after-tax basis, and projecting what each spouse’s cash flow looks like under each version.
Models illustrate possibilities under stated assumptions and do not predict results. Fund performance, clinical outcomes, employment, and tax law all vary. The purpose is to make the uncertainty visible before signing rather than after.
These assets are also a strong argument for a collaborative process. A single financial neutral working with both spouses can build one set of scenarios that both sides rely on, rather than two retained experts producing competing valuations for a judge who must then pick a number for an asset that has none yet. The details also stay out of a public court file, which matters when a firm’s fund terms are involved.
Nothing here is legal or tax advice, and Massachusetts counsel and a tax professional should review any specific situation.
Compensation that has not been paid yet is where these settlements are won or lost, and the documents matter more than the estimates. A conversation with a high net worth divorce financial planner in Boston early in the process gives both spouses a realistic view of what these interests may be worth and what each proposed structure actually does.
