Commonwealth Fusion SystemsISO/NSO
Commonwealth Fusion Systems equity calculator: value your options at the latest valuation
Calculate the current value of your Commonwealth Fusion Systems equity using secondary market data and four independent valuation methods. Free, no account required.
Commonwealth Fusion Systems — current market snapshot
Last primary round
$2.6B
Series B · 2021-12
Secondary market
—
No recent verified signal
Equity type
ISO/NSO
Strike: $6–$14
Key things to know
- →Commonwealth Fusion Systems is developing commercial fusion energy.
- →High-risk, long-horizon equity — commercial fusion power is a decade-scale bet.
- →Secondary market implied valuation tracks the latest closed round.
- →IPO or SPAC likely only when commercial fusion is achieved.
Open the calculator
Enter your actual shares, equity type, and strike price. PrivatePulse uses secondary market data and four independent valuation methods to give you a defensible range.
Calculate my Commonwealth Fusion Systems equity →Free · No account required · Takes 2 minutes
Liquidity outlook for Commonwealth Fusion Systems
Early-stage — IPO 4–6+ years away. High-risk, high-upside equity. Liquidity most likely via acquisition or late-stage tender.
As an option holder, you'll need to exercise your ISO/NSO to own shares. Strike price, exercise cost, and tax treatment (ISO vs NSO) all matter. Model carefully with a CPA.
Frequently asked questions
What is my Commonwealth Fusion Systems equity worth right now?↓
Commonwealth Fusion Systems's Series B2 (2025) valued the company at $6B. Secondary market data (Hiive, Forge, Caplight) gives a live read on implied valuation — PrivatePulse tracks this and updates every week. Gross value per option = (secondary share price − your strike price). Multiply by your vested count, then subtract taxes. The PrivatePulse calculator handles all of this automatically.
When will Commonwealth Fusion Systems go public or offer liquidity?↓
Commonwealth Fusion Systems is at $5.5B — still in an early-to-mid growth stage. An IPO is likely 4–6 years away at minimum. Liquidity before then typically requires a tender offer or secondary sale approved by the company.
What is the Commonwealth Fusion Systems strike price for employee options?↓
Strike prices at Commonwealth Fusion Systems vary by grant year and cohort. Recent grants typically carry strikes in the $0–$14 range per share. Your grant agreement shows your exact 409A strike. With Commonwealth Fusion Systems now implying ~$6B, the intrinsic value per option is (current secondary price per share − your strike); enter your numbers in the PrivatePulse calculator to see the full picture including AMT and vesting schedule.
What's the difference between Commonwealth Fusion Systems ISOs and NSOs?↓
Commonwealth Fusion Systems typically grants a mix of Incentive Stock Options (ISOs) and Non-Qualified Stock Options (NSOs). ISOs: exercised spread is not taxed as income — instead it creates an AMT preference item. Long-term capital gains treatment is available if you hold shares 2 years from grant and 1 year from exercise. NSOs: exercised spread is ordinary income immediately — simpler but less tax-efficient. Both types require payment of the strike price to exercise. Use the PrivatePulse calculator to model the after-tax outcome under ISO vs NSO treatment at the current $6B implied valuation.