Shares owned are stock you already hold; a stock option is a right to buy stock later at a set price; and an unvested award is compensation that remains subject to conditions. The label “unvested” alone does not tell you whether shares have been issued or what you can do with the award. The grant notice, equity plan, and related agreements determine those details.
What each term means
Shares owned
If company stock has been issued or acquired and is held by you, you own shares. That does not necessarily mean you can sell them whenever you want: private-company shares may be difficult to sell, and transfer restrictions or other terms may apply. Voting, dividend, and other rights depend on the security and governing documents; the label alone does not establish them.
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Stock options
A stock option is a contractual right to buy a specified number of shares at an exercise price, also called a strike price. The option is not the underlying stock, so holding an option does not by itself make you a shareholder. Depending on the agreement, you may need to satisfy vesting conditions before exercising, pay the exercise price to buy shares, and exercise before the option expires.
The option count is therefore not the same as the number of shares you own. To understand what an option may mean in practice, check its exercise price, vesting schedule, expiration deadline, and the assumptions used for any current share value. A headline count alone does not establish value.
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Unvested awards
“Unvested award” describes an award whose vesting conditions have not yet been met; it is not one uniform type of security. Restricted stock may involve actual property subject to forfeiture or transfer limits. A restricted stock unit (RSU) is an award that may be settled later in shares or, under its terms, in cash. Whether stock has already been issued, what conditions remain, and when settlement occurs depend on the award and plan documents.
How the three compare
| Question | Shares already owned | Stock options | Unvested awards |
|---|---|---|---|
| What do you hold now? | Stock, if issued or acquired and held, subject to applicable restrictions. | A contractual right to buy stock under an option agreement. | A conditional award; current rights depend on its type and terms. |
| Must you pay to receive stock? | Acquisition has generally already occurred, though a purchase or other consideration may have been required. | Usually, you must pay the exercise price to exercise and acquire shares. | It depends on the award terms; payment requirements are not uniform. |
| What changes your position? | A sale, transfer, or other ownership event. | Vesting may make the option exercisable; exercise buys shares, while expiration can end the right. | Vesting and, for some awards, a later settlement or delivery. |
| What should you check? | Whether shares were issued, restrictions, transferability, and shareholder documents. | Exercise price, vesting schedule, expiration, and option type. | Award type, forfeiture conditions, vesting, settlement, and tax provisions. |
| What can’t you infer from the label alone? | That you can immediately sell, or that you have particular voting or dividend rights. | That you currently own shares or that the option has guaranteed value. | That you already hold unrestricted shares. |
What to check in your documents
Start with the grant notice and equity plan, then review any related agreements and tax documents. Look for the specific instrument, what has been issued, conditions and dates, what happens if employment ends, and whether settlement is in shares or cash. For options, also identify the exercise price, when exercise is permitted, and the expiration date. The award’s label alone cannot answer these questions.
- For shares: confirm issuance, restrictions on transfer or sale, and the rights described in the governing documents.
- For options: distinguish vesting from exercise. Vesting can make an option exercisable; it does not itself buy the stock.
- For unvested awards: identify whether the award is restricted stock, an RSU, or another instrument, and check forfeiture and settlement terms.
U.S. federal tax treatment depends on the instrument
The following is a general summary of U.S. federal tax rules, not individualized tax advice. The IRS distinguishes statutory options—such as incentive stock options (ISOs) and options under employee stock purchase plans—from nonstatutory stock options. Statutory options generally do not create gross income at grant or exercise, although exercising an ISO may trigger alternative minimum tax, and a later sale can have tax consequences. A nonstatutory option can produce income at exercise or at another time, depending in part on whether it had a readily determinable fair market value at grant and on the circumstances. Do not assume all options are taxed only when sold. See the IRS’s Publication 525 and Topic no. 427.
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Restricted property and RSUs should not be treated as interchangeable for tax purposes. IRS Publication 525 explains that property subject to a substantial risk of forfeiture or nontransferability generally is included in income when it becomes substantially vested, subject to applicable exceptions and elections. An RSU is an award that may be settled later, so identify its terms and tax treatment rather than applying the restricted-property rule automatically to every award.
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Tax treatment is jurisdiction-specific. The IRS sources above address U.S. federal rules. HMRC provides a high-level overview of UK employment-related securities legislation covering share options and awards, but it does not provide a basis for a detailed U.S.–UK comparison: Employment-related securities and options: overview.
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“Shares owned,” “options,” and “unvested awards” are useful starting points, not a substitute for the governing documents. They do not establish an award’s value, guarantee that an option can be exercised indefinitely, or show what happens in every departure or settlement scenario. Those answers come from the specific plan and agreement, and tax questions may require advice based on your circumstances.
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