Dividing RSUs and Stock Options in a Divorce

Part of Nauma's complete guide to Divorce & Financial Planning.

For a tech employee going through a divorce, equity compensation is often the single largest — and least understood — asset on the table. Unlike a bank balance or a brokerage account, unvested RSUs and unexercised stock options don't have a settled dollar value, can't simply be transferred to a non-employee spouse the way a bank account can, and are only partially a marital asset in the first place: the portion tied to service after separation generally belongs to the employee spouse alone.

This page covers how equity compensation is characterized and divided. For how the marital share of a specific grant is actually calculated, see Valuing Unvested Equity in a Divorce. For the underlying mechanics of how RSUs and stock options work, see RSU in Private Companies and Stock Options.

Vested vs. Unvested: Two Different Problems

Equity that was already vested at the date of separation is more straightforward: it's a known quantity — a specific number of shares (or exercised options) with a determinable value on that date, divided like any other asset the couple owns jointly.

Unvested equity is the harder problem. A grant made during the marriage but scheduled to vest after separation represents future compensation for a mix of past and future service — and only the portion attributable to the marriage is a marital asset. Courts do not treat the entire unvested grant as either fully marital or fully separate; they apportion it using a time-based formula, commonly called a coverture fraction or "time rule," applied against the grant's vesting schedule.

Two Ways to Actually Divide It

Once the marital share of a grant is identified, couples and courts generally choose between two structural approaches:

If-and-when distribution. The non-employee spouse receives their share of shares or proceeds only if and when the grant actually vests. This avoids arguing over a present-day valuation for something that hasn't happened yet, but it keeps the ex-spouses financially connected for years, and the non-employee spouse's payout depends on the employee spouse remaining at the company through the vesting date — a real risk if the employee later leaves, is terminated, or the grant is forfeited.

A present-value buyout. The parties agree on a current value for the marital share and the employee spouse keeps 100% of the equity, offsetting the other spouse with cash, other assets, or a larger share of a different asset (commonly the marital home). This cleanly ends the entanglement but requires agreeing on a number for something inherently uncertain — a private company's shares in particular can be difficult to value with confidence (see Valuing Unvested Equity in a Divorce).

Most equity compensation plans cannot be directly split or retitled the way a bank account can — the shares generally cannot be legally transferred to a non-employee ex-spouse under the plan's own terms. This is a structural reason if-and-when arrangements exist at all: absent a buyout, the employee spouse typically continues to hold the grant, with a contractual obligation, spelled out in the settlement agreement, to pay the ex-spouse their share as shares vest.

Why the Grant's Purpose Matters as Much as the Dates

Courts don't apply the same time-rule fraction to every grant. The choice of formula turns on what the equity was actually for: a hiring grant intended to reward getting someone in the door (and compensate for skills already possessed) is treated differently from a retention-focused refresher grant meant to keep someone from leaving over the next several years. Grant agreements, board resolutions, and a company's general compensation practices are the evidence courts and attorneys look to in order to characterize a specific grant — which is why equity-heavy divorces often involve requesting the actual plan documents through discovery rather than relying on assumptions about how the grant was designed. See Valuing Unvested Equity in a Divorce for how this characterization question determines which formula applies and why it can shift a large grant's division by a significant margin.

Performance-Based Equity Adds Another Layer

Performance shares or performance stock units (PSUs) — equity that vests only if specific company or individual metrics are met — complicate the timing question further, because the final number of shares that will actually vest may not be known until after the divorce is finalized. Courts commonly handle this either by reserving jurisdiction to address the award once the performance outcome is known, or by dividing based on the target award amount with a later true-up when results are finalized.

The Tax Reality Doesn't Change, Even When Ownership Does

Regardless of how the parties agree to divide the economic value, the employee spouse generally continues to recognize ordinary income at vest (for RSUs) or at exercise (for NSOs), because the equity plan and the employer's withholding obligations run through the employee, not the ex-spouse. Shares retained after vesting carry their own cost basis for any later sale, which matters for both spouses if shares (rather than cash) end up being the vehicle for an if-and-when payment. A reimbursement paid to the non-employee spouse under an if-and-when arrangement is typically treated as a property settlement rather than additional taxable income to either party, but this treatment can vary by structure, and settlement agreements should specify who bears the tax cost of vesting or exercise — this is a frequent point of confusion and dispute if left ambiguous. ISOs carry an additional wrinkle: exercising them can trigger AMT exposure, which should be factored into any valuation or buyout discussion involving unexercised ISOs.

California Note

California is a community property state, and equity granted during the marriage is generally community property to the extent it was earned during the marriage — courts have treated contingent, not-yet-vested compensation as a divisible property interest since the California Supreme Court's 1976 Marriage of Brown decision established that an unvested right is not a mere expectancy.

California courts most often apply one of two time-rule formulas: the Hug formula (from In re Marriage of Hug (1984)), which measures the community period from the date of hire to the vesting date and tends to produce a larger community share, typically applied when a grant rewards past service; and the Nelson formula (from In re Marriage of Nelson (1986)), which measures from the date of grant to the vesting date, tends to produce a smaller community share, and is typically applied when a grant is meant to incentivize future work and retention. Because many tech employers — including most large public tech companies — grant a mix of hiring grants and recurring annual refreshers, the same employee's equity can be subject to both formulas simultaneously, mapped grant by grant rather than applied uniformly to the whole portfolio. See Valuing Unvested Equity in a Divorce for the formulas themselves and a worked example.

This article is for educational purposes only and does not constitute legal, tax, or financial advice. The characterization and division of equity compensation in divorce is highly fact-specific and varies significantly by state and by the terms of the specific equity plan. Always work with a family law attorney experienced in equity compensation, and consult a qualified tax advisor before agreeing to any structure for dividing vested or unvested equity.