SK Hynix Chairman's $917M Korean Divorce: What It Means in California

SK Hynix Chairman and Ex-Wife Clash Over Record $917M Korean Divorce Settlement

SK Hynix Chairman Chey Tae-won and ex-wife Roh Soh-yeong appeared together at Seoul High Court on June 15, 2026 — their first joint courtroom appearance in over two years — but mediation failed to resolve South Korea's largest divorce, a 1.38 trillion won ($917 million) settlement. The property-division trial resumes June 26. For California residents, the case spotlights how courts value a spouse's contribution to a business empire built during marriage.

The dispute, reported by Bloomberg, centers on whether an appeals court overstated Roh Soh-yeong's role in the growth of SK Group, the conglomerate that controls SK Hynix. Chey Tae-won is challenging the award, the largest divorce settlement in South Korean history, arguing the valuation of his ex-wife's contribution was inflated. While Korean law governs this case, the legal questions — business valuation, spousal contribution, and division of appreciation during marriage — are identical to those California courts decide under community property rules.

Key Facts

Why This Matters Legally

A spouse's indirect contribution to a business can dramatically increase what they receive in divorce. The Korean appeals court's reasoning — that Roh Soh-yeong's role justified a $917 million award — mirrors how California courts treat a non-titled spouse who supports a marriage while the other builds wealth. In California, the issue is not whose name is on the stock certificate; it is how much of the business value was created through community effort during the marriage.

This case reached headlines because the dollar figure is enormous, but the underlying principle applies to ordinary divorces too. When one spouse founds or grows a company during a marriage, the increase in that company's value is frequently community property, even if the business existed before the wedding. California uses two formulas — Pereira and Van Camp — to separate the portion of business growth attributable to the spouse's labor (community) from the portion attributable to market forces or pre-existing capital (separate). The fight in Seoul is, at its core, a fight over which contributions count.

How California Law Handles This

California is a community property state, and Cal. Fam. Code § 760 provides that all property acquired by either spouse during marriage is community property owned equally by both. Upon divorce, Cal. Fam. Code § 2550 requires courts to divide community property equally — a 50/50 split — absent a written agreement otherwise. If the SK Hynix dispute had unfolded in Los Angeles instead of Seoul, the central question would be how much of SK Group's appreciation occurred during the marriage through community effort.

Businesses started before marriage begin as separate property, but their growth during marriage is often community property. California courts apply the Pereira approach (from Pereira v. Pereira, 1909) when a spouse's skill and labor drove the growth, allocating a fair return to the separate-property capital and treating the remainder as community. Courts apply the Van Camp approach (Van Camp v. Van Camp, 1921) when growth came primarily from the business's own capital or market conditions, valuing the spouse's labor at a reasonable salary and treating the rest as separate.

Under Cal. Fam. Code § 2552, the community estate is valued as near as practicable to the time of trial, not the date of separation — a rule that matters enormously when a company's stock keeps climbing during years of litigation. A non-owner spouse may also have reimbursement and tracing claims under Cal. Fam. Code § 2640 for separate-property contributions to community assets, which is exactly the kind of accounting battle now playing out in the Korean court.

Practical Takeaways

If you own a business or are married to someone who does, this $917 million case offers concrete lessons that apply at any wealth level:

1. Document the date and value of any business you owned before marriage. California treats pre-marital business value as separate property, but you must prove the starting figure with records, not memory.

2. Understand that business growth during marriage is usually divisible. Even a company you started years before the wedding can generate community property through its appreciation under Pereira or Van Camp.

3. Recognize that a non-owner spouse's contribution counts. Supporting a household, raising children, or assisting the business can increase a spouse's share — the precise issue contested in Seoul.

4. Get a qualified business valuation early. Disputes like this one turn on competing expert valuations; under Cal. Fam. Code § 2552, timing of the valuation can shift millions.

5. Consider a prenuptial or postnuptial agreement. A valid written agreement can override the default 50/50 rule of Cal. Fam. Code § 2550 and define in advance how business growth is treated.

6. Expect long timelines in high-asset cases. The Chey-Roh litigation has spanned years; complex valuation fights rarely resolve quickly, and California's trial-date valuation rule rewards patience.

Frequently Asked Questions

How would California divide a $917 million business empire in divorce?

California would divide only the community-property portion equally (50/50) under Cal. Fam. Code § 2550. For a business started before marriage, courts use Pereira or Van Camp formulas to separate community growth from separate-property value, so the divisible amount is usually far less than the company's total worth.

Is a business started before marriage separate property in California?

Yes, a business owned before marriage starts as separate property under Cal. Fam. Code § 760, but its appreciation during the marriage is frequently community property. California courts apply Pereira (1909) or Van Camp (1921) to allocate growth, meaning a portion of even a pre-marital company may be divided 50/50.

Does a non-working spouse get half the other spouse's business?

Not automatically half the business, but a non-working spouse often shares in the community portion of business growth created during marriage. California recognizes homemaking and indirect support as community contributions, so the spouse may receive a significant share of appreciation under Cal. Fam. Code § 2550's equal-division rule.

When is a California business valued for divorce — separation or trial?

California values the community estate as near as practicable to the trial date, not the separation date, under Cal. Fam. Code § 2552. For a business whose value rises during litigation, this rule can substantially increase the divisible amount, which is central to disputes like the SK Hynix case.

Can a prenup protect a business in a California divorce?

Yes, a valid prenuptial agreement can protect a business by overriding the default 50/50 division of Cal. Fam. Code § 2550. The agreement must be in writing, signed voluntarily, and meet the requirements of California's Uniform Premarital Agreement Act, including full financial disclosure and independent counsel.

Bottom Line for California Readers

The SK Hynix divorce is a $917 million reminder that the hardest question in any high-asset divorce is not who owns a business, but how much of its value was built together during the marriage. If you are navigating a divorce involving a business, professional practice, or significant appreciation in assets, a California family law attorney can help you trace separate property, secure a credible valuation, and protect your share.

This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.