IPO Simulation Agent · $99/mo Intelligence Stack
IPO Lockup Window Calculator
Enter total shares offered, lockup duration in days, the founder/employee/investor cohort split, and whether an early-exit exception applies. The calculator rolls out every insider sale window over time and highlights the day-180 expiration cliff — the unlock event every pre-IPO holder and secondary buyer plans around.
The second of the IPO Simulation Agents — inside the $99/mo Intelligence Stack.
Unlock the IPO Lockup Window Calculator
The interactive lockup-window calculator is the second IPO Simulation Agent inside the $99/mo IPO Intelligence Stack. Project insider unlock cohorts, the day-180 cliff, and early-exit exceptions — one subscription, cancel anytime.
Sample lockup-window output
Example: 100M shares offered · 180-day lockup · 45% founder / 10% employee / 45% pre-IPO investor · no early-exit exception
| Cohort |
Shares locked |
Day-1 window |
Day-90 window |
Day-180 expiration |
| Founder |
45,000,000 |
0% |
0% |
45,000,000 · 100% |
| Employee pool |
10,000,000 |
0% |
0% |
10,000,000 · 100% |
| Pre-IPO investor |
45,000,000 |
0% |
0% |
45,000,000 · 100% |
| TOTAL |
100,000,000 |
0 sh · 0% |
0 sh · 0% |
100,000,000 · 100% |
Default SEC lockup term = 180 days. With no early-exit exception, every insider share stays locked from listing day and unlocks at the day-180 cliff. Toggle the early-exit exception on and set a release % to see the day-1 window open up; the day-180 row then shows the remaining share count.
Highlights — the day-180 cliff is exactly that: one supply event, 180 days post-IPO, with every pre-IPO cohort sale-eligible at once. Plan your secondary exit, your buying window, or your TAM refresh around it.
How the IPO Lockup Window Calculator works
How is the lockup-window schedule rolled out over time?
By default, every insider share sits locked from the listing day through the lockup term, and all of it unlocks at the day-N expiration point (the SEC default is 180 days). If an early-exit exception applies, a percentage (commonly 10%) of each cohort is released on day 1; the remainder unlocks at the day-180 cliff. The calculator renders the share count and % unlocked at each event for every cohort.
What is the day-180 cliff?
The day-180 cliff is the SEC-mandated lockup expiration that fires 180 days after the IPO. Every founder, employee, and pre-IPO investor share that has not been released by an earlier exception becomes sellable on day 180 — typically the largest single supply event in the first year of public trading. It is the unlock event every pre-IPO holder plans around.
How do founder / employee / investor cohorts differ?
Each cohort holds a different share of the pre-IPO cap table but is governed by the same lockup term on day 1. The calculator takes the founder/employee/investor % split you provide, multiplies it against the total pre-IPO shares, then projects each cohort's unlock windows separately so you can see exactly which group is selling and when.
What does the early-exit exception toggle do?
An early-exit exception lets some insider shares (often a small percentage) be sold or vested on day 1 instead of waiting for the day-180 cliff. Toggle it on and set the release %; the calculator splits each cohort into a day-1 release and a day-180 remaining share count. Toggle off and every share rolls to day 180.
Why is this gated to the $99/mo Intelligence Stack?
This is the second IPO Simulation Agent shipping inside the Intelligence Stack ($99/mo, cancel anytime). Everything on this page stays public — title, intro, sample output, FAQ, JSON-LD — so it can rank organically for “IPO lockup period” / “180-day lockup.” Only the interactive calculator is gated.