Sell Iron Mountain (IRM) stock to fund a goal
Calculator · free · no signup · IRMNeed cash for a goal? Plan the minimum-tax schedule to sell your vested Iron Mountain (IRM) shares and net a target amount by a target date, across tax years.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Inputs
Your equity
One stack per ticker (current-employer RSUs, prior-employer holdings, index fund, etc.). Each stack has its own current price, growth assumption, and cost-basis lots.
Drives chance-of-shortfall · default 30%
Lots
Plan
Estimates only. Not financial advice.
Lock-in-now is deterministic (0%). Plans that wait depend on future prices; risk is near-zero when inventory comfortably exceeds the goal. Volatility: each stack's option-implied vol if a ticker is set, otherwise 30%. Lognormal model; real markets have fatter tails.
| Tax | $109,617 | $111,667 | $111,859 | $118,744 |
| Wealth @ target | $718,846 | $716,668 | $714,158 | $711,725 |
| Chance of shortfall | <0.1% | 0% | 1.8% | 3.4% |
Feasible
$400,074 net by 08/01/27
Total tax: $109,617 (federal $58,832, state $36,054, NIIT $14,732)
Schedule · Recommended
| Sale date | Shares | Tax | Net | Cumulative |
|---|---|---|---|---|
| 08/20/26 | 4,086 | $351,185 | $360,065 | |
| 03/31/27 | 4 | $360 | $360,428 | |
| 04/30/27 | 32 | $2,894 | $363,341 | |
| 05/31/27 | 100 | $9,099 | $372,482 | |
| 06/30/27 | 100 | $9,152 | $381,655 | |
| 07/31/27 | 100 | $9,208 | $390,864 | |
| 08/01/27 | 100 | $9,210 | $400,074 |
Risk vs wealth
Each dot is a possible plan. Right is riskier, up is more wealth left over.
Trajectory of cash netted
Solid line = expected. Shaded band = 10th–90th percentile under price uncertainty.
After the plan
You keep 3,478 shares worth $411,546 at the projected target-date price, invested for the next decision.
You solved for a cash target. The beta optimizes your full portfolio across multiple goals and market scenarios, not just one funding need.
Request beta access →Related calculators: RSU Lot Order Calculator · Stock Concentration Calculator · RSU Sell-vs-Hold Calculator
About Iron Mountain
Iron Mountain (IRM) is a public Real Estate company, incorporated in Delaware and headquartered in Portsmouth, NH.
Last close: $126.67 per share (as of 2026-08-18).
Equity grants at Iron Mountain typically include restricted stock units (RSUs).
Iron Mountain Inc. is a global enterprise information management services company founded in 1951 and headquartered in Boston, Massachusetts. Its records management, information destruction, and data backup and recovery services are supplied to more than 220,000 customers in 58 countries throughout North America, Europe, Latin America, Africa, Asia, and Oceania.
Source: Wikipedia (CC BY-SA 4.0)
The business began in 1951 storing records in a depleted iron mine and grew into the largest physical records storage company in the world, later converting to a real estate investment trust. Stored boxes generate rent indefinitely because destruction requires a customer decision that rarely gets made, producing famously durable revenue. Data centers and digital records management are the growth investment funded by that cash flow. Secure shredding and asset disposal extend the same customer relationships. Headquarters are in Portsmouth, New Hampshire.
Sources: sec.gov · en.wikipedia.org
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Iron Mountain.
If you hold vested Iron Mountain (IRM) shares and need a set amount of cash by a date (a house down payment, tuition, a sabbatical, a business buy-in), the question is which lots to sell and in which tax years to keep the most after tax. This calculator builds the minimum-tax sell schedule across your lots, accounting for federal long-term capital gains, the net investment income tax, and your state.
Example: a 5,000-share IRM position at $126.67 is worth $633,350. Say you need $150,000 of it for a house down payment by next spring. Selling enough shares all in one tax year can push the gain into the higher long-term capital-gains bracket and trigger the 3.8% net investment income tax; spreading the sale across two tax years often nets more. The calculator above finds the minimum-tax sell schedule across your specific lots, basis, goal, and date.
All Iron Mountain tools → · Use the generic Stock Sale Funding Calculator for any company.
Iron Mountain equity questions
- How much IRM stock do I sell to fund a goal without overpaying tax?
- It depends on your cost basis, your target amount and date, and how the sale spreads across tax years. Selling vested IRM shares triggers long-term capital-gains tax, plus the 3.8% net investment income tax and state tax above certain income, and bunching a large sale into one year can push the gain into a higher bracket. The calculator above builds the minimum-tax sell schedule across your lots to net your target amount by your date.
- Does Iron Mountain grant ISOs, NSOs, or RSUs?
- Equity compensation at Iron Mountain typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
One piece of the puzzle.
OptionsAhoy plans your Iron Mountain equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.