A startup equity offer is only worth what you can convert it into, and the headline number of shares or options almost never tells you that. Before you accept, convert the grant into an actual expected dollar value: check the strike price against the current 409A fair market value and the price the last investors paid, find out where you sit in the liquidation preference stack, confirm whether you're getting ISOs or NSOs, and get the vesting and acceleration terms in writing. Skipping any one of these steps means you're accepting a number you can't actually price.
Why doesn't the number of shares tell you what your equity is worth?
A grant of "10,000 options" or "5,000 RSUs" is meaningless on its own. What matters is your ownership percentage on a fully diluted basis, and three separate prices that are frequently confused with each other:
- Strike price (exercise price): what you pay per share to convert an option into stock. For a compliant grant, this is set at the 409A fair market value on the date of grant.
- 409A fair market value: an independent valuation of common stock, done for tax compliance, that is almost always lower than what investors paid for preferred stock in the same company. Common stock lacks the liquidation preference, anti-dilution protection, and board rights that preferred shares carry, so a 409A valuation firm prices it at a discount to the last round.
- Last preferred round price: the price per share investors paid, which is usually the number a recruiter quotes when they tell you the company's valuation. It is not the price your options are struck at, and it is not what your shares are worth in a downside or moderate exit.
Treating these three numbers as interchangeable is the single most common mistake candidates make when reading an offer. A $2/share strike price at a company whose preferred stock last traded at $8/share is not "$2 worth of upside baked in": it reflects the real, sanctioned gap between what common and preferred stock are worth, and that gap can widen further with every future round. Carta's own equity education material walks through why fully diluted share count, not the raw option count, is the number that determines your actual ownership percentage, since it includes the option pool, all outstanding preferred, and any convertible notes or SAFEs still on the cap table.
How does the liquidation preference stack change what your options are worth at exit?
This is the term that decides whether a "successful" acquisition pays you anything at all, and it is the part of an offer companies are least likely to volunteer.
A liquidation preference gives preferred shareholders the right to get their invested capital back before common shareholders (including employees holding vested options or RSUs) see a cent. A 1x non-participating preference is the market standard: the investor gets 1x their money back, or converts to common and takes their pro-rata share of the full proceeds, whichever pays more, but not both. A 2x participating preference is a very different instrument: the investor takes 2x their money back first, and then also shares pro-rata in whatever is left over as if they had converted. That double dip can leave common shareholders with a small fraction of the sale price even when the headline number sounds like a win.
Multiple rounds stack. If a company raised a $15M Series A, a $40M Series B, and a $30M Series C, each with its own preference, all three stacks typically get paid out (usually in reverse order of seniority, most recent round first) before common stock sees anything. Consider a company that raised a total of $70M across preferred rounds, all with standard 1x non-participating terms, and sells for $90M. Preferred investors take their $70M off the top; common shareholders (employees) split the remaining $20M, a fraction of what the $90M sale price implies. If any of those rounds carried a 2x or participating structure instead, the amount left for common stock would be smaller still, or in a weaker exit, zero.
Industry perspective
"NASPP's guidance on preferred stock explains that when a company is acquired, preferred shareholders are contractually entitled to get their invested capital back before common shareholders, including employees, see any of the proceeds."
— NASPP: Preferred Shares: How They Can Affect Your Employees
The good news for candidates: 1x non-participating terms are now overwhelmingly the norm, not the exception. Cooley's Q2 2025 Venture Financing Report, which tracks hundreds of venture deals per quarter, found that 98% of the financings it reviewed carried a 1x liquidation preference and 95% used non-participating preferred stock, meaning the aggressive 2x-participating structures that can badly damage common stock value are now uncommon in current-market deals. That does not mean you should skip asking: older rounds at a given company can carry older, less founder-friendly terms than the company's most recent raise, and the stack is cumulative across every round the company has ever closed.
What's the difference between ISOs and NSOs, and why does it matter for your taxes?
Private companies grant one of two option types, and the difference changes your tax bill by tens of thousands of dollars depending on how much the company grows.
ISOs (Incentive Stock Options) get favorable tax treatment if you meet specific holding requirements: no ordinary income tax is due at exercise, though the spread between strike price and fair market value can trigger the alternative minimum tax (AMT). If you hold the resulting shares for at least one year after exercise and two years after grant, gains are taxed at long-term capital gains rates instead of ordinary income rates when you eventually sell. Only employees (not contractors or advisors) can receive ISOs, and there are annual limits on how much can vest as ISOs before the excess is automatically treated as NSOs.
NSOs (Non-Qualified Stock Options) are simpler and less favorable: the spread between strike price and fair market value is taxed as ordinary income at the time you exercise, regardless of whether you sell the shares, and it is usually subject to withholding. Contractors, advisors, and board members typically receive NSOs because they are not eligible for ISO treatment.
If your offer letter doesn't specify which type you're getting, ask directly. The distinction affects both your tax bill and your cash needs at exercise: an ISO exercise can still trigger AMT liability even without a sale, so "no ordinary income tax due" does not mean "no tax bill due."
What vesting and acceleration terms should you check before accepting?
The standard structure is four-year vesting with a one-year cliff: nothing vests until you've been at the company for 12 months, then 25% vests at the cliff and the remainder vests monthly over the following three years. Before you accept, read (don't assume) the following:
- Cliff length: confirm it's the standard 12 months and not something longer.
- Acceleration on acquisition: does any of your unvested equity accelerate if the company is acquired, and is it single-trigger (accelerates on the acquisition alone) or double-trigger (accelerates only if you're also let go within a window after the deal)? Double-trigger is far more common than single-trigger.
- Post-termination exercise window: how long you have to exercise vested options after you leave. The market default is 90 days, which can force you to walk away from vested options you can't afford to exercise. For more on why this specific term is worth pushing back on before you sign, the equity negotiation guide covers the exercise window and other terms that are commonly negotiable even after an offer has been made.
- Refresh policy: whether the company has a stated cadence for additional grants after your initial vest begins, and what triggers them. The stock refresh and grant negotiation guide covers how refresh grants typically work and when to raise them.
None of these terms change the number printed on your offer letter, but they change what that number is actually worth to you if the company is acquired, if you leave early, or if the company simply takes longer than expected to have a liquidity event.
What questions is it reasonable to ask a startup before accepting equity?
Most candidates never ask, and most startups won't volunteer this information unprompted. That doesn't mean it's unreasonable to ask for it. Before accepting an offer with a meaningful equity component, ask for:
- Total fully diluted shares outstanding, so you can calculate your actual ownership percentage rather than trusting a headline share count.
- The most recent 409A valuation, so you know what the company's own third-party valuation says your strike price is based on, and how it compares to the last preferred round price.
- The liquidation preference stack, including whether any round carries participating or greater-than-1x terms.
- Whether you're being granted ISOs or NSOs, and what the post-termination exercise window is.
- What happens to unvested equity on acquisition, and whether acceleration is single- or double-trigger.
Companies whose total securities sales exceed the SEC's Rule 701 threshold in a rolling 12-month period are required to give option holders enhanced disclosures, including financial statements and risk factors, before requiring them to exercise; that's a separate mechanism from a candidate's own pre-offer questions, but it establishes that structured equity disclosure to grant recipients is already a normal regulatory expectation at scale, not an unusual request. If a company flatly refuses to answer basic questions about share count or preference stack before you accept, treat that refusal itself as data: you're being asked to value something you can't see the terms of. If you're weighing this offer against a public-company RSU offer or another startup's grant, the job offer comparison framework walks through how to line up equity, salary, and benefits from very different offer structures side by side.
Key takeaways
The strike price, 409A value, and last round price are three different numbers
A recruiter quoting "the company is valued at $X" is citing the preferred price, not what your options are struck at or what a 409A valuation says common stock is worth. Confirm all three before you estimate what your grant is worth, since the gap between them is often large and grows as a company raises more capital.
The liquidation preference stack determines whether an exit pays you anything
A 1x non-participating preference (now the market standard on most current deals) lets common shareholders share meaningfully in most exits. A 2x or participating structure, or a large cumulative preference stack from many rounds, can leave employees with little or nothing even in a nominal "up" acquisition. Ask for the stack before you accept.
ISOs and NSOs are taxed differently, and the difference is not small
ISOs can qualify for long-term capital gains treatment but may trigger AMT at exercise. NSOs are taxed as ordinary income at exercise regardless of AMT exposure. Know which type you're being granted, since it changes both your eventual tax bill and how much cash you need on hand to exercise.
Vesting terms beyond the standard 4-year/1-year-cliff structure change real value
Acceleration provisions, exercise windows, and refresh policies don't appear in the headline grant size, but they materially change what a grant is worth to you in an early departure, an acquisition, or a slow-growth scenario. Read the actual plan documents, not just the offer letter summary.
A company's willingness to share cap table basics is itself a signal
Fully diluted share count, the latest 409A valuation, and the preference stack are reasonable, standard questions. A company that stonewalls them isn't protecting a trade secret; it's asking you to accept a number it won't let you verify.
Frequently asked questions
What's the difference between a 409A valuation and the price investors paid for preferred stock?
The 409A valuation independently prices common stock (what employee options are struck against) for tax compliance purposes. The preferred price is what investors paid for preferred shares in the most recent round, which carry rights common stock doesn't have, like liquidation preferences and anti-dilution protection. The 409A value is typically well below the preferred price, and the gap tends to widen as a company raises larger, later rounds.
How can I estimate what my startup equity is actually worth?
Start with your ownership percentage on a fully diluted basis (shares granted divided by total fully diluted shares), then apply the liquidation preference stack to model what's left for common stock in a range of exit scenarios, not just the best case. Private company equity is illiquid until an exit, so treat any single-scenario dollar figure as a rough estimate, not a guarantee.
Should I ask for the liquidation preference stack even if it feels awkward?
Yes. It's one of the small number of facts that determines whether your options pay out at all in a moderate exit, and it's standard information that legitimate venture-backed companies can share without disclosing anything competitively sensitive. A refusal to share it is more informative than most answers you'd get.
Are ISOs always better than NSOs?
Not automatically. ISOs offer better tax treatment if you can hold the shares long enough to qualify for long-term capital gains and you can absorb any AMT liability at exercise. NSOs are simpler and create no AMT exposure, but the full spread is taxed as ordinary income at exercise. Which is "better" depends on your cash position, the company's growth trajectory, and your own tax situation.
What if the company won't tell me the fully diluted share count?
Treat it as a meaningful red flag rather than a minor omission. You cannot calculate your real ownership percentage, model exit scenarios, or compare the offer to another company's grant without it. Ask again through a different contact (recruiter, hiring manager, or the equity administration platform the company uses), and if the refusal persists, factor that opacity into your decision the same way you would any other unresolved risk in an offer.
Bottom line
- The number of options or RSUs on your offer means nothing until you know the strike price, the 409A fair market value, and the last preferred round price
- Check the liquidation preference stack before you accept; a 2x participating structure or a large cumulative stack can leave common stock worth little in a moderate exit
- Confirm whether you're getting ISOs or NSOs; the tax treatment differs enough to change your after-tax outcome by a meaningful margin
- Ask for fully diluted share count, the latest 409A valuation, and the preference stack directly; a legitimate company can answer, and a refusal is itself useful information
- Track every offer's terms and compare them side by side on Hire.monster