Leaving Zapata Quantum, Inc.? Plan your 90-day ISO window
Calculator · free · no signup · pre-IPOZapata Quantum, 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.
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Your grant
Seeded from secondary-market data, as of Aug 13, 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
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Remaining
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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 Zapata Quantum, Inc.
Zapata Quantum, Inc. is a privately held Cloud/SaaS company, incorporated in Delaware and headquartered in Boston, MA. S-1 filed Jul 9, 2026.
Last reported secondary-market price: $0.85 per share (as of 2026-08-13). Your own 409A may differ.
Equity grants at Zapata Quantum, Inc. typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).
Spun out of Harvard University's quantum computing lab in 2017, Zapata Quantum builds hardware-agnostic software for quantum computers. Founded by Harvard professor Alan Aspuru-Guzik, four of his postdoctoral researchers, and CEO Christopher Savoie, the company developed the Orquestra platform and holds patents for Quantum Intermediate Representation (QIR), a translation layer that lets quantum programs run across multiple hardware platforms. After ceasing operations in October 2024 and filing for bankruptcy, the company relaunched under CEO Sumit Kapur and closed an oversubscribed $15 million financing round in April 2026.
Sources: thequantuminsider.com · businesswire.com · hpcwire.com
Equity comp at Zapata Quantum, Inc.
- Zapata Quantum completed a SPAC merger in March 2024 when Andretti Acquisition Corp. merged with Zapata Computing, Inc. and domesticated as a Delaware corporation. The company ceased operations in October 2024 due to debt obligations, filed for bankruptcy in 2025, and re-emerged as Zapata Quantum focused on quantum software after converting over $10 million of debt to equity. Pre-restructuring equity plans were substantially disrupted by the bankruptcy. As of year-end 2025, total unrecognized stock option compensation was approximately $1,849, indicating minimal active grants. The company has used stock options rather than RSUs as its primary equity vehicle both before and after restructuring.
- Vesting schedule: stock options vest monthly over four years with a one-year cliff on initial grants.
Sources: sec.gov · globenewswire.com · thequantuminsider.com
Researched 2026-07-11.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Zapata Quantum, Inc..
If you are leaving Zapata Quantum, 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.
All Zapata Quantum, Inc. tools → · Use the generic Post-Termination ISO Exercise Calculator for any company.
Zapata Quantum, Inc. equity questions
- I left Zapata Quantum, 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 Zapata Quantum, 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 Zapata Quantum, Inc. grant ISOs, NSOs, or RSUs?
- Equity compensation at Zapata Quantum, 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.
- Are Zapata Quantum, 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 Zapata Quantum, Inc. shares qualify turns on when you acquired them and the company's asset size at that time.
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OptionsAhoy plans your Zapata Quantum, Inc. equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.