A cap table shows who owns shares, but it doesn’t settle marital property rights. Founder shares, stock options, and restricted stock units (RSUs) held in one spouse’s name can still require a California community property analysis, particularly when the award was granted, earned, or vested during the marriage.
That distinction becomes more consequential before a funding round, acquisition, or other liquidity event increases the value of the equity. A sound family law analysis looks beyond company records when evaluating postnuptial agreements involving founder or employee equity.
How California Treats Equity Acquired During Marriage
California Family Code section 760 generally presumes that property acquired during marriage is community property unless an exception or valid agreement applies. A spouse’s name on an equity grant, stock certificate, or capitalization table is relevant evidence, but it doesn’t determine characterization by itself.
Equity awards differ in ways that affect the analysis. A founder may receive shares before marriage, continue building the company during marriage, and later receive additional grants. An employee may receive options for past work, future work, or both. RSUs often vest over time, raising questions about when the compensation was earned.
A useful equity inventory separates the interests that need review:
- Founder shares and any later share issuances.
- Stock options, including grant dates, vesting schedules, and exercise records.
- RSUs and the service periods tied to vesting.
- Exercised shares, sale proceeds, and equity held through an entity.
Gather the grant agreements, cap table, vesting schedules, exercise notices, and documents from major valuation events. These records help identify whether an agreement should address present ownership, future appreciation, or both.
Why California Postnuptial Agreements Receive Heightened Scrutiny
A postnuptial agreement is made after marriage. It differs materially from a premarital agreement because the spouses already owe fiduciary duties to one another.
Under Section 721, spouses must act with the highest good faith and fair dealing and provide true, complete information about matters affecting community property. When an agreement benefits one spouse over the other, the fiduciary relationship can create a presumption of undue influence that the spouse seeking enforcement must overcome.
A current cap table alone doesn’t provide enough information to evaluate an agreement involving company equity. Each spouse needs to understand the ownership structure, the awards involved, known restrictions, and the financial consequences of the proposed terms.
California also imposes formal requirements for changing property character. Section 852 requires a property transmutation, meaning a change from community to separate property or the reverse, to be in writing with an express declaration accepted by the spouse whose interest is adversely affected. A verbal understanding that one spouse’s shares will remain separate isn’t an enforceable substitute.
Independent counsel and organized financial disclosure give both spouses a meaningful opportunity to evaluate the proposal. The seven-day review rule that applies to many premarital agreements doesn’t govern postnuptial agreements. Instead, the fiduciary standard between spouses remains central.
Terms to Address for Founder & Employee Equity
A well-considered agreement documents the relevant facts and states how the spouses intend to treat specific interests. It should distinguish existing awards from future grants rather than broadly declaring that all company equity belongs to one spouse.
California Family Code section 1612 permits agreements concerning property, a business, its income, appreciation, and disposition upon separation, dissolution, death, or another specified event. The terms may address:
- The characterization of existing founder shares, options, or RSUs.
- The treatment of future grants and whether they compensate past or future service.
- The allocation of sale proceeds, dividends, exercise costs, and related debt.
- The treatment of appreciation and a later liquidity event.
Unvested awards deserve particular attention. California courts use time-based apportionment approaches known as the Hug formula and Nelson formula to allocate community and separate interests in some unvested equity awards. These approaches examine the period between grant and vesting, compare service before, during, and after the marriage, and consider why the company issued the award.
Neither formula provides a universal answer. The grant language, vesting conditions, employment history, and purpose of the award all matter. A funding round or acquisition can increase value sharply, but it doesn’t eliminate the need to determine when the interest was granted, earned, vested, or exercised.
What a Postnup Can’t Decide
A postnup can clarify financial property rights, but it doesn’t replace every family law protection or business document. Section 1612(b) doesn’t permit a marital agreement to adversely affect child support, and courts independently retain authority to decide child custody or visitation regardless of what an agreement states. Courts retain authority to decide custody and visitation according to a child’s best interests.
Spousal support provisions also require careful treatment. A waiver of spousal support generally requires independent legal counsel to be enforceable, and unclear or one-sided provisions can create later disputes.
The agreement must also align with related records. Estate plans, company governing documents, and equity-plan transfer restrictions can affect what a spouse may own, transfer, or receive. A marital agreement can’t disregard obligations created by those documents.
A Deliberate Process Before a Funding Round or Exit
Equity characterization should be addressed before a transaction or marital dispute makes every decision urgent. Starting early gives each spouse time to collect records, make full financial disclosures, obtain independent legal advice, and consider the proposed terms without the pressure of a pending sale or dissolution.
For a postnup involving startup equity, the review may include:
- Grant agreements.
- Vesting schedules.
- Exercise history.
- Tax documents.
- Company governance records.
- Financial disclosures.
When specialized analysis supports informed decision-making, accountants and business valuation professionals can assist with the financial issues.
A carefully drafted agreement doesn’t assume every award has the same character. It creates a written framework reflecting the couple’s assets, work history, and intentions before increased value turns an unanswered question into a high-stakes dispute.
Led by Attorney Lorie Nachlis, a California Board of Legal Specialization Certified Family Law Specialist, we provide Premarital, Post-Marital, & Cohabitation Agreement services for complex financial issues. To discuss a California marital agreement involving startup equity, contact Nachlis | Cohade | Lopez-Whitaker, LLP at (415) 855-9344.