Employee Stock Option Plan: What It Must Get Right | Slice

A Series B diligence request asks a company for three documents: the option plan, the board consent adopting it, and the stockholder approval. The first two come back in minutes. The third does not exist; the plan went live on board approval alone, fourteen months ago, and the window for stockholders to approve it closed at month twelve.

Nothing on the cap table looks different. But every grant issued as an ISO under that plan never qualified, and the diligence memo now says so. That is a tax result: the grants take NSO treatment, whatever the award agreements call them.

A plan that is almost finished is not finished, because the plan is where equity's legal machinery lives. This guide covers what an employee stock option plan is and is not, what the document must contain, the approvals and clocks around adoption, the rules that attach to every plan, and what running one looks like afterward.

An employee stock option plan, often titled an equity incentive plan, is the legal document under which a private company grants equity awards: stock options first, and, where the plan allows, restricted stock and RSUs. It reserves a fixed pool of shares, defines who is eligible, and sets the terms every grant inherits.

The names overlap; the instruments do not. An ESOP, an Employee Stock Ownership Plan, is a retirement-style arrangement in which a trust holds company stock for employees, governed by its own body of law. This guide, and everything on this hub, covers option plans.

For options to qualify as ISOs, the tax code demands specific things of the plan document itself, not just of each grant. The plan-level requirements:

Each grant then carries its own conditions on top: a strike at or above fair market value (110 percent, with a 5-year maximum term, for holders of more than 10 percent), a term of 10 years or less, and the employment requirements. Those live at grant time and are covered in how to grant stock options right (coming soon).

Warning: the stockholder-approval window does not reopen. Approval must land within 12 months before or after the board adopts the plan. A plan that misses the window cannot qualify ISOs, and grants already made as ISOs under it never qualified. The fix is prospective, not retroactive.

Both windows on one timeline, from the day the board adopts:

Adoption usually runs in this sequence, though the statute does not fix it. Stockholders can approve up to 12 months before the board adopts, and an ISO grant can come before the stockholder vote as long as that approval lands inside the window.

On pool size, there is no statutory number. The pool is a cap-table decision negotiated with investors. What the law cares about is that the number, whatever it is, appears in the plan.

Practice note. From our experience, every grant approval should record a description of the valuation being relied on and a statement that nothing material has changed since it. The board's continued reliance on a valuation is itself a determination, and writing it down each time helps keep the file defensible later.

Three regimes follow the plan around for its whole life.

409A pricing. Every grant's strike rests on a grant-date fair market value established by a reasonable method. A qualifying independent appraisal carries a presumption of reasonableness that generally cannot be relied on after 12 months or once material new information affects the valuation; a financing, a tender or an acquisition is judged on whether it materially affects value, not treated as an automatic reset.

A plan is only as defensible as the valuation behind its most recent grant; the mechanics live in how stock options are taxed (coming soon).

The $100K ISO limit. The cap applies cumulatively, at grant, in grant order, across plans of the employer and its parent and subsidiaries. Grant-date fair market value of ISOs first exercisable in a calendar year above $100,000 is an NSO from day one, whatever the paperwork says.

Rule 701. The federal securities exemption private-company plans rely on caps what can be offered in any 12 months at the greatest of $1 million, 15 percent of the issuer's assets, or 15 percent of the class, with options measured at grant at their exercise-price value.

Crossing $10 million in a 12-month period triggers enhanced disclosure to recipients of Rule 701 securities in that 12-month period, option holders included, delivered a reasonable period before the first relevant exercise or sale. Where crossing the threshold is foreseeable, waiting until exercises begin risks being late, and a missed disclosure can cost the exemption for that 12-month offering, though another exemption may still be available.

A live plan is mostly a records discipline. Each grant is documented in a board approval or a validly delegated one, with the valuation support recorded as a matter of practice, plus a grant letter and a signed acceptance, and the vesting schedule attaches at the grant, not in the plan; the norms are covered in vesting schedules for private companies. 

Eligibility runs wider than ISOs: contractors and non-employees can receive NSOs under the same plan, and cross-border grants bring their own layer, covered in granting stock options to foreign employees.

And the 10-year ISO clock runs whether or not anyone watches it. It starts at adoption or approval, whichever came first, and it does not pause for quiet years. A company that wants ISO capability past that date either adopts a new plan or obtains fresh board and stockholder approval of the existing one. Options already granted do not expire because the ISO grant window closed.

The plan's paper trail is the part that decays in spreadsheets and inboxes. In Slice, grants move through an approval flow, with grant letters and board approvals sent and signed via DocuSign, and Board Approval and Grant Letter templates built in.

Slice flags a grant that crosses the $100K ISO limit and displays the ISO/NSO breakdown, with an ISO/NSO Split Grants ($100K Threshold) report, and compliance alerts are triggered automatically from the equity data itself. The same record holds grants across 66+ countries, so US option grants and grants under other countries' rules sit side by side. You enter or approve the facts; nothing files with regulators automatically.