Equity Calculator
Enter your grant details to see an estimated valuation range.
We show what verified secondary signals and valuation methods imply for this active private company.
Your equity details
5 inputs. Takes about 2 minutes. Every field has a help section if you need it.
›How does this affect the calculation?
Selecting a company pre-loads everything the calculator needs: the latest known primary-round valuation, total fully-diluted shares, and the typical equity type that company grants.
We auto-fill the equity type below based on what your company most commonly grants — but you can override it if your specific grant differs.
OpenAI is an active private company.
›Where do I find this?
Three places to check, in order of reliability:
- Your offer letter — look for "You will be granted X shares / options / RSUs subject to a vesting schedule of..."
- Your Carta dashboard (login.carta.com) — under "Portfolio" or "Holdings", find the grant and look at "Quantity" or "Awarded".
- Your equity portal at your employer (Shareworks, Solium, EquityZen, etc.) — usually shown as "Total granted" or "Grant size".
If you have multiple grants (initial + refreshes), either sum them up here, or run the calculator once per grant and add the results.
The total size of your grant — not just what's vested today.
Profit Participation Units are unique to OpenAI. Legally they aren't stock — they're a right to share in profit distributions from OpenAI's for-profit subsidiary. Economically, they behave like RSUs: no strike price, vest over time.
Taxed as ordinary income when distributions are paid out (cash or shares at a liquidity event), not at the vesting date itself. The exact mechanics depend on OpenAI's Profit Participation Plan, which is a private agreement.
No exercise decision. You will receive payouts when OpenAI elects to distribute — typically via tender offers or at a liquidity event.
OpenAI grants typically: PPU
The kind of award your company gave you. Different types are taxed differently.
›Hire date vs. grant date — which one?
For your initial grant, the vesting start date is almost always your hire date. The 1-year cliff (if any) is measured from that date.
For refresh grants issued later in your tenure, vesting starts on the grant date — not your original hire date. Run the calculator once per grant in that case.
Where to find it: your offer letter specifies "Vesting commencement date". Carta also shows it under each grant.
When your vesting clock started — usually your hire date.
›What is a 'cliff' and why does it exist?
A cliff is a minimum time you must work before any of your equity vests. The most common is a 1-year cliff: if you leave before 12 months, you forfeit your entire grant. On day 365, a full year of vesting (typically 25% of the grant) unlocks in one chunk. After that, vesting usually continues monthly.
Why companies use it: protects them from giving equity to short-tenure employees. From your side, the cliff is the highest-risk part of your grant — if you'd considered leaving, time it after the cliff anniversary.
Acceleration: some senior offers include "single-trigger" or "double-trigger" acceleration that vests remaining equity if the company is acquired or you're fired without cause. Check your grant agreement.
How your grant unlocks over time.
Valuation range appears instantly. Enter your email below to unlock the full breakdown (tax, scenarios, method detail).