Stock Option and Equity Disputes in Japanese Startups

A foreign executive joins a Japanese startup.

The offer includes salary plus "1% equity."

Three years later, the executive leaves the company.

The company then says:

"You do not own any shares."

Who is right?

Before discussing vesting percentages or company valuation, one more fundamental question must be answered: what legal right was actually granted?

"Equity" can mean several different things

In startup negotiations, expressions such as:

• "1% equity"
• "stock options"
• "shares after vesting"
• "ESOP"
• "equity compensation"

are sometimes used loosely.

Legally, however, they may refer to very different arrangements.

The person may already own shares.

The company may have validly issued stock options.

There may be a contractual obligation to issue options later.

Or there may only have been a preliminary promise that was never formally implemented.

These situations can produce very different claims.

Documents that should be reviewed

Important documents may include:

• the offer letter
• employment agreement
• consulting agreement
• stock option agreement
• shareholder resolutions
• board resolutions
• articles of incorporation
• cap table
• vesting schedule
• exercise notices
• leaver provisions
• email or chat communications

For Japanese stock options structured as share acquisition rights, corporate approvals and the actual terms of issuance can be particularly important.

Vesting is only part of the analysis

Suppose an agreement states:

• 25% after one year
• monthly vesting thereafter
• unvested options are cancelled upon departure

That still does not answer every question.

You may need to determine:

1. whether the options were legally granted
2. when vesting started
3. whether the departure was voluntary or involuntary
4. whether termination affects vested rights
5. whether exercise remains possible after departure
6. whether the company complied with the governing documents

Where the departure itself is disputed — a dismissal, or a resignation under pressure — that question is often decided first, because it can determine what happens to the equity. See contract disputes in Japan for how those situations are approached.

What if the company only promised to grant options?

This is a particularly important issue in startup disputes.

A contractual promise to provide stock options and an already-issued stock option are not necessarily the same legal right.

If the necessary corporate steps were never completed, a claim may concern breach of an obligation to grant equity rather than exercise of an existing stock option.

That distinction can also affect how damages or other remedies are analyzed.

What if the startup has become extremely valuable?

Valuation can become one of the most difficult parts of the dispute.

The fact that a startup later raised capital at a high valuation does not automatically establish the value of the claimant's legal loss.

Questions may include:

• what right the person actually had
• vesting conditions
• exercise price
• restrictions on transfer
• dilution
• probability of exercising the right
• liquidity
• the relevant valuation date

For a private startup, a headline financing valuation is not necessarily equivalent to immediately realizable cash value for an employee's common shares or options.

Tax is a separate issue

Japanese tax treatment differs depending on how stock options are structured.

Tax-qualified and non-tax-qualified stock options can be treated differently, and cross-border residence issues may add complexity.

A dispute over whether equity rights exist should therefore be distinguished from the separate question of how those rights are taxed.

Preserve the evidence before leaving the startup

Before access is removed, retain lawful copies of documents directly relevant to your own rights.

Particularly important evidence may include:

• the original offer
• compensation discussions
• cap table communications
• vesting statements
• option agreements
• exercise records
• termination communications

At the same time, do not indiscriminately download confidential company information unrelated to your claim.

Where the shareholding itself is contested between the people who built the company, the analysis widens: see founder and business partner disputes in Japan.