Leaving NON INVASIVE MONITORING SYSTEMS INC /FL/? Plan your 90-day ISO window
Calculator · free · no signup · pre-IPONON INVASIVE MONITORING SYSTEMS INC /FL/ is pre-IPO. Left with vested ISOs? Model the 90-day exercise-or-forfeit decision and its AMT cost at any valuation: current 409A or an expected exit price.
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Your grant
Seeded from secondary-market data, as of Oct 8, 2026
Tax inputs
Schedule A, line 7. The 2026 deduction is capped at $40,400, less above $505,000 of income.
Grant timeline
Recommended exercise quantity
Exercise all 10,000
With 10%/yr expected growth over the 3-yr hold, every share's expected after-tax gain exceeds its marginal AMT cost. Net value: $44,332 at horizon.
Net after-tax value vs. shares exercised
Each point is the expected after-tax NPV at your hold horizon if you exercise that many shares now and let the rest expire.
Year-by-year tax breakdown
You pay the higher of Regular tax and Tentative AMT per jurisdiction, then subtract Credit recovered. The result is Net tax. Hover any number for the bracket-by-bracket breakdown.
| 1 | 10,000 | |||
| 2 | 0 | |||
| 3 | 0 |
Federal AMT credit
Earned
$4,904
Recovered
$4,904
Remaining
$0
Estimates only. Excludes disqualifying dispositions, NSOs, multi-state moves, and AMT preferences other than ISO bargain elements. Long-term capital gains tax assumes a qualifying disposition (ISO held ≥1 yr from exercise and ≥2 yr from grant); state LTCG follows ordinary brackets except where the state grants preferential treatment (HI, ND, SC, WI, AR, NM) or has a dedicated LTCG-only tax (WA). Assumes you are within the $100K ISO limit (any portion of an annual ISO grant whose FMV at grant exceeds $100K is treated as NSO from the start, §422(d)). State AMT figures are 2025 (next-year values published in late 2026). Not financial advice.
QSBS note. If your shares qualify (typically pre-IPO C-corp grants held 5+ years), a federal rule lets you exclude up to $10M of gain on a future sale from federal tax. That single rule shifts exercise-timing math more than AMT does. (This is §1202 “qualified small-business stock”.) Modeled in beta, not here.
You solved the exercise window. The beta plans what comes after it: the new shares, your remaining equity, hedges, and taxes in one multi-year plan.
Request beta access →Related calculators: Multi-Year ISO Exercise Schedule Calculator · Stock Concentration Calculator
About NON INVASIVE MONITORING SYSTEMS INC /FL/
NON INVASIVE MONITORING SYSTEMS INC /FL/ is a privately held Aerospace/Defense company, incorporated in Florida and headquartered in Marysville, WA. S-1 filed Aug 20, 2026.
Last reported secondary-market price: $11 per share (as of 2026-10-08). Your own 409A may differ.
Equity grants at NON INVASIVE MONITORING SYSTEMS INC /FL/ typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).
Incorporated in Florida on July 16, 1980, Non-Invasive Monitoring Systems built external sensor devices, RESPITRACE and RESPIEVENTS, to track breathing and heart activity and flag apnea and other cardiorespiratory problems in infants and critically ill patients. It stopped operating in May 2019 and became a shell company (a public entity with no active business) seeking a merger. On March 6, 2026, it agreed to merge with Gravitics, a space station module maker founded in 2021 by Colin Doughan and Gary Hudson, giving Gravitics holders at least 95.5% of the combined company; closing is targeted for June 30, 2026.
Sources: sec.gov · sec.gov · tradingview.com · techcrunch.com
Equity comp at NON INVASIVE MONITORING SYSTEMS INC /FL/
- Gravitics is going public through a reverse merger into the NIMS shell rather than a traditional IPO. Under the merger agreement, each outstanding Gravitics stock option converts into an option to purchase the combined company's common stock under a new 2026 Equity Incentive Plan, with Gravitics stockholders and option holders together ending up owning roughly 95.5 to 96.5 percent of the combined company on a fully diluted basis. The specific vesting, change-in-control acceleration, and early-exercise terms of the new plan were not publicly confirmable this run.
Sources: sec.gov · sec.gov · tipranks.com
Researched 2026-08-29.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by NON INVASIVE MONITORING SYSTEMS INC /FL/.
If you are leaving NON INVASIVE MONITORING SYSTEMS INC /FL/ with vested incentive stock options (ISOs), most stock plans give you 90 days from departure to exercise or forfeit them. The calculator works at any valuation: enter your strike and the current 409A fair market value (FMV) or an expected exit price. It computes your window deadline, the alternative minimum tax (AMT) cost of exercising in full, and the partial-exercise share count that maximizes expected after-tax value.
Example: leaving NON INVASIVE MONITORING SYSTEMS INC /FL/ with 5,000 vested ISOs at a $3.3 strike, with the last reported price at $11, exercising all of them inside the 90-day window puts a $38,500 bargain element into one tax year. For a single filer with $200,000 of taxable income, that adds $2,172 of federal AMT under 2026 rules, before any state AMT (CA, CO, CT, MN). Exercising fewer shares lowers that bill at the cost of forfeiting the rest; the calculator above finds the count that maximizes expected after-tax value for your exact figures.
All NON INVASIVE MONITORING SYSTEMS INC /FL/ tools → · Use the generic Post-Termination ISO Exercise Calculator for any company.
NON INVASIVE MONITORING SYSTEMS INC /FL/ equity questions
- I left NON INVASIVE MONITORING SYSTEMS INC /FL/. How long do I have to exercise my ISOs?
- Most stock plans give you 90 days from your departure date to exercise vested incentive stock options (ISOs); unexercised options are forfeited when the window closes. Tax law is slightly wider: ISO treatment requires you to have been an employee within 3 months of exercise (Internal Revenue Code Section 422(a)(2)), so options exercised under an employer-extended window are taxed as non-qualified stock options (NSOs). Check your grant agreement for NON INVASIVE MONITORING SYSTEMS INC /FL/'s exact terms. The calculator above computes your deadline from your departure date, the alternative minimum tax (AMT) cost of exercising, and the share count that maximizes after-tax value.
- Does NON INVASIVE MONITORING SYSTEMS INC /FL/ grant ISOs, NSOs, or RSUs?
- Equity compensation at NON INVASIVE MONITORING SYSTEMS INC /FL/ typically takes the form of incentive stock options (ISOs) and non-qualified stock options (NSOs). Incentive stock options can trigger the alternative minimum tax (AMT) when you exercise.
- Are NON INVASIVE MONITORING SYSTEMS INC /FL/ shares eligible for QSBS?
- They might be. Qualified small business stock (QSBS) under Internal Revenue Code Section 1202 can exclude federal tax on much of the gain when shares were acquired at original issuance from a C-corporation while its gross assets were under $50 million, and held at least five years. Whether your NON INVASIVE MONITORING SYSTEMS INC /FL/ shares qualify turns on when you acquired them and the company's asset size at that time.
One piece of the puzzle.
OptionsAhoy plans your NON INVASIVE MONITORING SYSTEMS INC /FL/ equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.