Leaving Boumarang Inc.? Plan your 90-day ISO window
Calculator · free · no signup · pre-IPOBoumarang Inc. 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.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Your grant
Seeded from secondary-market data, as of Jul 25, 2026
Tax inputs
Grant timeline
Recommended exercise quantity
Skip the exercise
At 10%/yr expected growth, the AMT premium outweighs the after-tax gain on every share. Letting the window close avoids the AMT bill.
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.
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Federal AMT credit
Earned
$0
Recovered
$0
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 Boumarang Inc.
Boumarang Inc. is a privately held Aerospace/Defense company, incorporated in Delaware and headquartered in Irvine, CA. S-1 filed Jun 16, 2026.
Last reported secondary-market price: $2 per share (as of 2026-07-25). Your own 409A may differ.
Equity grants at Boumarang Inc. typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).
Incorporated in Delaware in July 2024 and headquartered in Irvine, California, Boumarang builds hydrogen fuel cell-powered autonomous drones for military, surveillance, search-and-rescue, and delivery applications. The company expanded from aerial to maritime systems in April 2025 by acquiring the Wavedrone platform for $3.5 million in stock. In August 2024, it licensed computer vision and AI technologies from Trust Stamp (Nasdaq: IDAI) for $5 million paid in stock warrants. CEO Edward Fairchild, appointed in November 2024, brings two decades of government contracting experience. Boumarang filed an S-1 registration statement with the SEC in December 2025.
Sources: sec.gov · globenewswire.com
Equity comp at Boumarang Inc.
- Boumarang Inc. had no outstanding equity awards and no equity incentive plan in place as of its fiscal year ended September 30, 2025, per the S-1 filed with the SEC. Executive compensation consisted solely of cash accruals with no stock options or RSUs granted. The company is a development-stage, pre-revenue issuer conducting a small direct public offering of 125,000 shares at $2.00 per share. Until a formal equity incentive plan is adopted and disclosed in a subsequent filing, RSU and option policy terms cannot be sourced.
- Early exercise is not allowed: you have to wait for shares to vest before you can buy them.
Researched 2026-06-21.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Boumarang Inc..
If you are leaving Boumarang Inc. 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 Boumarang Inc. with 5,000 vested ISOs at a $1 strike, with the last reported price at $2, exercising all of them inside the 90-day window puts a $5,000 bargain element into one tax year. Above the 2026 federal AMT exemption ($88,100 single, $137,000 married joint), the 28% AMT rate adds roughly $1,400 on top of regular tax 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 Boumarang Inc. tools → · Use the generic Post-Termination ISO Exercise Calculator for any company.
Boumarang Inc. equity questions
- I left Boumarang Inc.. 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 Boumarang Inc.'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 Boumarang Inc. grant ISOs, NSOs, or RSUs?
- Equity compensation at Boumarang Inc. 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.
- Does Boumarang Inc. allow early exercise of stock options?
- No. Boumarang Inc. requires options to vest before you can exercise them, so the holding-period clock for long-term capital-gains treatment starts as each tranche vests and you exercise it.
- Are Boumarang Inc. 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 Boumarang Inc. 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 Boumarang Inc. equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.