Dividing Stock Options and RSUs in a San Francisco Divorce

In San Francisco, equity compensation is not a perk reserved for executives — it is a core part of how many people are paid. Restricted stock units (RSUs), incentive stock options (ISOs), non-qualified stock options (NSOs), and employee stock purchase plans (ESPPs) are standard components of compensation packages across the Bay Area’s technology industry. When a marriage ends, these assets become some of the most complex and contested items in the settlement.

California is a community property state, which means that compensation earned during the marriage — including equity grants that were awarded during the marriage but have not yet vested — is generally considered community property subject to equal division. The challenge is that stock-based compensation does not behave like a bank account. It vests over time, its value fluctuates with the market, and it carries tax consequences that can dramatically affect what each spouse actually receives.

RSUs: the most common equity in Bay Area divorces

Restricted stock units are the dominant form of equity compensation at most large technology companies in San Francisco and the broader Bay Area. An RSU grant represents a promise to deliver shares of company stock on a future vesting date, typically over a four-year schedule. When the shares vest, they are treated as ordinary income and taxed accordingly.

In a divorce, RSUs that were granted during the marriage are generally community property. But the analysis becomes more nuanced when an RSU grant was made during the marriage but will not fully vest until after the date of separation. In these cases, California courts commonly apply the “time rule” formula to determine the community property fraction. The time rule divides the period of employment from the grant date to the vesting date into two segments: the portion that occurred during the marriage (community property) and the portion that occurred after separation (separate property).

For example, if an RSU grant was awarded two years before separation and will vest two years after separation, the time rule would generally assign half of those shares to the community and half as separate property. The exact application can vary depending on whether the grant was intended to reward past service or incentivize future performance, and courts have discretion in how they apply the formula. This is an area where the details matter enormously, and getting the characterization wrong can mean losing a significant portion of your share.

Stock options: ISO vs. NSO and why it matters

Stock options give the holder the right to purchase company stock at a predetermined price (the “strike price” or “exercise price”). The value of an option is the difference between the current market price and the strike price. In a divorce, this “spread” is the value that is subject to division.

The critical distinction for divorce purposes is between incentive stock options (ISOs) and non-qualified stock options (NSOs), because they are taxed very differently. NSOs are taxed as ordinary income when exercised — the spread is treated as compensation income subject to income tax and payroll taxes. ISOs, by contrast, receive preferential tax treatment: if holding period requirements are met, the gain may be taxed at long-term capital gains rates rather than ordinary income rates. However, the spread on ISO exercise can trigger alternative minimum tax (AMT) liability, which adds another layer of complexity.

When dividing options in a divorce, it is essential to account for these tax differences. Simply splitting the number of options equally may result in an unequal division of after-tax value. One approach is to calculate the after-tax value of each option and divide the total after-tax value equally, which may result in an unequal split of the raw number of options. Another approach is to assign a tax-adjusted value and offset it against other assets in the settlement.

Private company stock and 409A valuations

San Francisco is home to a large number of private technology companies, from early-stage startups to late-stage companies approaching an IPO. When one spouse holds stock or options in a private company, determining the value of that equity is inherently more difficult than looking up a public stock price.

Private companies are required to obtain independent 409A valuations to set the fair market value of their common stock for purposes of equity compensation. These valuations are updated periodically — typically annually or after significant events such as a new funding round. In a divorce, the most recent 409A valuation is often used as a starting point for valuing private company equity, though either spouse can argue that the 409A valuation does not reflect the true fair market value.

The challenge with private company stock is that it is illiquid. You cannot sell it on the open market, and there may be significant restrictions on transfer. Some companies prohibit transfers to non-employees, which means the non-employee spouse cannot receive the shares directly. In these cases, alternative arrangements are necessary — such as the employee spouse retaining the shares and paying the non-employee spouse their share of the value in cash or other assets as the stock vests or a liquidity event occurs.

There is also meaningful risk that private company stock could decline in value or become worthless if the company fails. A settlement that gives one spouse illiquid startup equity while the other spouse receives cash or retirement assets may not be as equal as it appears on paper. Both parties should consider the risk profile of private company stock when negotiating the division.

ESPP shares and other equity programs

Employee stock purchase plans allow employees to purchase company stock at a discount, typically 15% below the market price at the beginning or end of each offering period. ESPP shares purchased during the marriage with community funds are generally community property. The discount itself can be substantial, and it is important to account for both the discount benefit and the tax treatment when valuing ESPP shares in a settlement.

Some companies also offer other forms of equity compensation, including performance stock units (PSUs) that vest based on achieving certain company metrics, or phantom stock plans that provide cash payments based on stock price appreciation without actual share ownership. Each type requires a different analysis for divorce purposes, and the community property characterization depends on when the grant was made, what it was intended to compensate, and when it vests. For more on dividing complex compensation beyond traditional retirement accounts, see our guide on splitting retirement accounts and equity beyond the 401(k).

Stock options and RSUs have complex vesting schedules, tax treatments, and valuation methods that make them uniquely tricky to divide fairly. DivorceSmart Pro calculates the after-tax value of each equity grant and shows how the community property split affects your net worth.

Protecting yourself in a tech equity divorce

The most common and costly mistake in Bay Area divorces involving equity compensation is failing to account for taxes. Our guide on divorce and taxes covers the broader implications. A share of stock worth a certain amount on paper is not worth that amount in your pocket after federal and California state income taxes. When negotiating a settlement, always work with after-tax values.

Second, make sure you have a complete inventory of all equity grants, including vesting schedules, grant dates, exercise prices (for options), and current valuations. Request copies of all equity award agreements and the most recent equity summary from the employee spouse’s employer. If there is any possibility that grants have been omitted or undervalued, a forensic accountant with experience in tech compensation can be invaluable. For more on finding concealed compensation, see our guide on hidden assets in divorce.

Third, consider the timing of any settlement relative to expected liquidity events. If a private company is approaching an IPO, the value of the equity could change dramatically in a short period. Structuring a settlement that accounts for this uncertainty — perhaps through a deferred division or a valuation adjustment mechanism — can protect both parties.

Use our San Francisco divorce settlement calculator to model different scenarios, and review our California divorce settlement guide for the broader state framework.

This article is for general informational and educational purposes only and does not constitute legal, financial, or tax advice. Laws, tax rules, and financial conditions vary by state and change frequently. The information may not reflect current laws or regulations, and individual circumstances vary widely. Do not make financial decisions based solely on the information in this article. Always consult a qualified attorney, financial advisor, and tax professional for guidance specific to your situation.