Leaving Syntiant Corp.? Plan your 90-day ISO window
Calculator · free · no signup · pre-IPOSyntiant Corp. 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 17, 2026
Tax inputs
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: $33,009 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.
| 1No AMT | 10,000 | |||
| 2 | 0 | |||
| 3 | 0 |
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 Syntiant Corp.
Syntiant Corp. is a privately held Semiconductor company, incorporated in Delaware and headquartered in Irvine, CA. S-1 filed Jul 13, 2026.
Last reported secondary-market price: $8.89 per share (as of 2026-08-17). Your own 409A may differ.
Equity grants at Syntiant Corp. typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).
In July 2026, Syntiant filed to go public on Nasdaq under ticker SYTN, reporting $64.5 million in first-quarter revenue against a $26.2 million net loss. Founded in January 2017 in Irvine, California by Kurt Busch, Stephen Bailey, Jeremy Holleman, and Pieter Vorenkamp, the company builds ultra-low-power chips, called Neural Decision Processors, that run machine-learning models directly on small devices like earbuds and speakers rather than in the cloud. In December 2024 it acquired Knowles Corporation's Consumer MEMS Microphone division (a maker of tiny microphones for phones and wearables) for roughly $150 million in cash and stock.
Sources: sec.gov · bloomberg.com · syntiant.com · globenewswire.com
Equity comp at Syntiant Corp.
- Pre-IPO RSUs vest only when a time-based service condition and a liquidity event condition are each satisfied, with the IPO satisfying the liquidity event condition within six months of the offering; neither condition alone is sufficient. A tranche of executive RSUs additionally requires achievement of market capitalization milestones between $1.5 billion and $3.5 billion within five years of grant alongside continued service. Named executive officers also hold separate Severance and Change in Control Agreements providing full acceleration of all outstanding equity awards upon termination without cause or for good reason occurring within 30 days before or 12 months after a change in control, creating a double-trigger layer for that executive subset only.
- Vesting schedule: RSUs under the 2017 Equity Incentive Plan require satisfaction of both a time-based service condition and a separate liquidity event condition before any RSU vests; if either condition is unmet by the expiration date the RSU is forfeited. A subset of executive RSUs carry an additional market capitalization milestone requirement with thresholds ranging from $1.5 billion to $3.5 billion, both the milestone and the service condition must be met within five years of the grant date..
Sources: sec.gov · sec.gov · sec.gov
Researched 2026-07-15.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Syntiant Corp..
If you are leaving Syntiant Corp. 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 Syntiant Corp. with 5,000 vested ISOs at a $2.67 strike, with the last reported price at $8.89, exercising all of them inside the 90-day window puts a $31,100 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 $8,708 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 Syntiant Corp. tools → · Use the generic Post-Termination ISO Exercise Calculator for any company.
Syntiant Corp. equity questions
- I left Syntiant Corp.. 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 Syntiant Corp.'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 Syntiant Corp. grant ISOs, NSOs, or RSUs?
- Equity compensation at Syntiant Corp. 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 Syntiant Corp. 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 Syntiant Corp. 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 Syntiant Corp. equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.