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Advisory Shares: The Question Nobody Asks Until It's A Problem

By Mike Nathan · Founder & CEO, Impero Ventures · Dec 31, 2026 · 5 min read
The short answer

Advisory shares are equity, usually common stock or stock options, granted to an advisor in exchange for ongoing help, and they should always be documented. Put the exact percentage, a vesting schedule tied to real involvement and clear expectations in a short written agreement the day you shake hands, not months later during diligence.

Advisors usually come on with a handshake and a vague promise of equity. "We'll take care of you." "A small piece." It gets formalized months later, if ever.

That informality is convenient early and expensive later. It surfaces when the cap table needs to be clean for a real raise, and nobody can agree on what was promised. I've seen rounds slow down over one line on a cap table that should have taken ten minutes to document years earlier.

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What are advisory shares?

"Advisory shares" isn't a special class of stock. It's shorthand for equity granted to an advisor in exchange for ongoing help. In practice, that usually means one of two things:

  • Stock options, often non-qualified options granted under the company's equity plan, with an exercise price typically set by a 409A valuation.
  • Restricted stock, issued up front and subject to vesting. If the advisor receives restricted stock, an 83(b) election within 30 days is often part of the conversation.

Which form fits depends on your company's stage and your plan. That's a question for a startup attorney, and it has tax consequences for both sides.

Why do handshake advisory deals cause problems later?

A verbal promise of "a small piece," with no percentage, no vesting and no expectations, creates ambiguity. That ambiguity shows up at the worst possible time: diligence for a fundraise, when a clean cap table suddenly matters a lot.

And advisors often remember the deal differently than founders do. Not out of bad faith. Vague verbal agreements are easy to misremember over months or years, especially once the company's value has changed what "a small piece" is worth.

Here's the math on why that fight gets heated. Say you promised "a point or two" when the company was worth almost nothing. Two years later, your priced round sets a $12M post-money valuation. One percent is now $120,000 on paper. Two percent is $240,000. The same vague sentence now means a $120,000 disagreement.

How much equity should you give an advisor?

For a typical advisor, the grant is usually a fraction of a percent. More involvement, more hours or a rare network can justify more. A name on your website and an occasional call justifies less.

Work the numbers in shares, not just percentages. Say your company has 10,000,000 fully diluted shares and you grant an advisor 0.25%. That's 25,000 shares. Vesting monthly over 24 months, about 1,042 shares vest each month the advisor stays involved.

Handshake dealOne-page written agreement
Amount"A point or two"0.25%, stated as 25,000 shares
VestingNever discussedMonthly over 24 months
Expectations"Help where you can"Quarterly check-ins, named intros
If the advisor steps awayUnclear, often disputedUnvested shares stop vesting
At diligenceWeeks of back-and-forthZero discussion

Every grant also changes your ownership math. Before you promise anything, read your cap table like an investor would and see where the grant lands.

What should an advisor agreement include?

A real advisory agreement can fit on one or two pages. It should cover:

  1. The exact grant. Percentage and number of shares, and whether it's options or restricted stock.
  2. Vesting. Tied to ongoing involvement, not a lump grant. Monthly vesting over one to two years is common for advisors.
  3. What happens on exit or departure. What vests if the company is acquired, and what stops if the advisor steps away.
  4. Expectations. Introductions, strategic input, a cadence of availability. Informal is fine. Written is the point.
  5. Confidentiality and IP. Anything the advisor creates for you belongs to the company.
  6. Board approval. Equity grants typically need board approval to be valid. Don't skip it.
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Have a startup attorney draft or review it. The vesting and equity mechanics carry real legal and tax weight later, and a template pulled from the internet may not match your equity plan.

What are the most common advisory share mistakes?

  • Granting everything up front. An advisor who drifts away after three months still owns the full grant.
  • Too many advisors. Five small grants add up. Investors notice a cap table crowded with people who don't do much.
  • Percentages without share counts. "Half a percent" of what, and measured when? Write the share number.
  • No board approval. An undocumented or unapproved grant can become a cleanup item in diligence.
  • Paying advisors for fundraising results. Equity for help is normal. Compensation tied to capital raised can raise securities law issues, so ask your attorney first.

The objection: "Formalizing this feels awkward with someone doing me a favor"

The pushback: isn't it transactional to hand a friendly advisor a contract when they're helping out of goodwill?

A short, standard advisory agreement is normal practice. It rarely reads as distrust to an experienced advisor. Most of them have watched the informal version go wrong before, and they'd rather have the clarity. The awkwardness of asking once is far smaller than the awkwardness of a disputed cap table entry in the middle of your raise.

Two advisory relationships, two outcomes

Consider two hypothetical founders. The first verbally promises an early advisor "a point or two" and never writes it down. Two years later, during diligence for a priced round, the advisor remembers a much higher number than the founder does. The dispute delays the round for weeks while lawyers sort it out.

The second founder signs a one-page agreement at the start: a quarter of a percent, vesting over two years, tied to quarterly check-ins. When that founder's priced round comes together, the advisory grant takes zero discussion. It was settled years earlier. The same logic applies to anyone joining later, which is why late co-founders need vesting too.

What to do this week

If you have an advisor on a handshake deal right now, send a one-page agreement this week with the actual percentage, share count and vesting schedule, reviewed by your attorney. It's a five-minute conversation now instead of a dispute later. Goodwill is real. Document it anyway, for both of your sakes.

Key takeaways

  • Advisory shares are usually options or restricted stock, and both need documentation.
  • Grants are typically a fraction of a percent, vesting over one to two years.
  • Put the percentage, vesting and expectations in writing the day you shake hands.

Frequently asked questions

How much equity should I give a startup advisor?

For a typical advisor, usually a fraction of a percent, with more for heavier involvement or a rare network. State it as both a percentage and a share count, vest it over one to two years, and have a startup attorney confirm it fits your equity plan.

Do advisory shares vest?

They should. Vesting ties the grant to the advisor's ongoing involvement, so if they step away, unvested shares stop vesting. Monthly vesting over one to two years is common for advisors. The exact terms belong in a written agreement approved by your board.

Are advisory shares stock options or common stock?

Either. Many companies grant non-qualified stock options under their equity plan, while others issue restricted common stock subject to vesting, which may call for an 83(b) election within 30 days. The right choice has tax consequences, so ask a startup attorney or CPA.

Mike Nathan

Mike Nathan

Founder & CEO, Impero Ventures · Founding Partner, Exit 156 Capital

20+ companies. $170M revenue. $55M raised. 3 exits. 2 VC funds. 1M+ YouTube subscribers.

He doesn't just pitch investors. He founded two venture capital funds.

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